text
stringlengths 7
328k
| id
stringlengths 14
166
| metadata
dict | __index_level_0__
int64 0
459
|
|---|---|---|---|
# Changelog
All notable changes to this project will be documented in this file.
The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
## [0.13.2]
- [#1096] Python 3.11 support
## [0.13.1]
- [#1072] Fixing Roberta type ids.
## [0.13.0]
- [#956] PyO3 version upgrade
- [#1055] M1 automated builds
- [#1008] `Decoder` is now a composable trait, but without being backward incompatible
- [#1047, #1051, #1052] `Processor` is now a composable trait, but without being backward incompatible
Both trait changes warrant a "major" number since, despite best efforts to not break backward
compatibility, the code is different enough that we cannot be exactly sure.
## [0.12.1]
- [#938] **Reverted breaking change**. https://github.com/huggingface/transformers/issues/16520
## [0.12.0] YANKED
Bump minor version because of a breaking change.
- [#938] [REVERTED IN 0.12.1] **Breaking change**. Decoder trait is modified to be composable. This is only breaking if you are using decoders on their own. tokenizers should be error free.
- [#939] Making the regex in `ByteLevel` pre_tokenizer optional (necessary for BigScience)
- [#952] Fixed the vocabulary size of UnigramTrainer output (to respect added tokens)
- [#954] Fixed not being able to save vocabularies with holes in vocab (ConvBert). Yell warnings instead, but stop panicking.
- [#962] Fix tests for python 3.10
- [#961] Added link for Ruby port of `tokenizers`
## [0.11.6]
- [#919] Fixing single_word AddedToken. (regression from 0.11.2)
- [#916] Deserializing faster `added_tokens` by loading them in batch.
## [0.11.5]
- [#895] Build `python 3.10` wheels.
## [0.11.4]
- [#884] Fixing bad deserialization following inclusion of a default for Punctuation
## [0.11.3]
- [#882] Fixing Punctuation deserialize without argument.
- [#868] Fixing missing direction in TruncationParams
- [#860] Adding TruncationSide to TruncationParams
## [0.11.0]
### Fixed
- [#585] Conda version should now work on old CentOS
- [#844] Fixing interaction between `is_pretokenized` and `trim_offsets`.
- [#851] Doc links
### Added
- [#657]: Add SplitDelimiterBehavior customization to Punctuation constructor
- [#845]: Documentation for `Decoders`.
### Changed
- [#850]: Added a feature gate to enable disabling `http` features
- [#718]: Fix `WordLevel` tokenizer determinism during training
- [#762]: Add a way to specify the unknown token in `SentencePieceUnigramTokenizer`
- [#770]: Improved documentation for `UnigramTrainer`
- [#780]: Add `Tokenizer.from_pretrained` to load tokenizers from the Hugging Face Hub
- [#793]: Saving a pretty JSON file by default when saving a tokenizer
## [0.10.3]
### Fixed
- [#686]: Fix SPM conversion process for whitespace deduplication
- [#707]: Fix stripping strings containing Unicode characters
### Added
- [#693]: Add a CTC Decoder for Wave2Vec models
### Removed
- [#714]: Removed support for Python 3.5
## [0.10.2]
### Fixed
- [#652]: Fix offsets for `Precompiled` corner case
- [#656]: Fix BPE `continuing_subword_prefix`
- [#674]: Fix `Metaspace` serialization problems
## [0.10.1]
### Fixed
- [#616]: Fix SentencePiece tokenizers conversion
- [#617]: Fix offsets produced by Precompiled Normalizer (used by tokenizers converted from SPM)
- [#618]: Fix Normalizer.normalize with `PyNormalizedStringRefMut`
- [#620]: Fix serialization/deserialization for overlapping models
- [#621]: Fix `ByteLevel` instantiation from a previously saved state (using `__getstate__()`)
## [0.10.0]
### Added
- [#508]: Add a Visualizer for notebooks to help understand how the tokenizers work
- [#519]: Add a `WordLevelTrainer` used to train a `WordLevel` model
- [#533]: Add support for conda builds
- [#542]: Add Split pre-tokenizer to easily split using a pattern
- [#544]: Ability to train from memory. This also improves the integration with `datasets`
- [#590]: Add getters/setters for components on BaseTokenizer
- [#574]: Add `fust_unk` option to SentencePieceBPETokenizer
### Changed
- [#509]: Automatically stubbing the `.pyi` files
- [#519]: Each `Model` can return its associated `Trainer` with `get_trainer()`
- [#530]: The various attributes on each component can be get/set (ie.
`tokenizer.model.dropout = 0.1`)
- [#538]: The API Reference has been improved and is now up-to-date.
### Fixed
- [#519]: During training, the `Model` is now trained in-place. This fixes several bugs that were
forcing to reload the `Model` after a training.
- [#539]: Fix `BaseTokenizer` enable_truncation docstring
## [0.9.4]
### Fixed
- [#492]: Fix `from_file` on `BertWordPieceTokenizer`
- [#498]: Fix the link to download `sentencepiece_model_pb2.py`
- [#500]: Fix a typo in the docs quicktour
### Changed
- [#506]: Improve Encoding mappings for pairs of sequence
## [0.9.3]
### Fixed
- [#470]: Fix hanging error when training with custom component
- [#476]: TemplateProcessing serialization is now deterministic
- [#481]: Fix SentencePieceBPETokenizer.from_files
### Added
- [#477]: UnicodeScripts PreTokenizer to avoid merges between various scripts
- [#480]: Unigram now accepts an `initial_alphabet` and handles `special_tokens` correctly
## [0.9.2]
### Fixed
- [#464]: Fix a problem with RobertaProcessing being deserialized as BertProcessing
## [0.9.1]
### Fixed
- [#459]: Fix a problem with deserialization
## [0.9.0]
### Fixed
- [#362]: Fix training deadlock with Python components.
- [#363]: Fix a crash when calling `.train` with some non-existent files
- [#355]: Remove a lot of possible crashes
- [#389]: Improve truncation (crash and consistency)
### Added
- [#379]: Add the ability to call `encode`/`encode_batch` with numpy arrays
- [#292]: Support for the Unigram algorithm
- [#378], [#394], [#416], [#417]: Many new Normalizer and PreTokenizer
- [#403]: Add `TemplateProcessing` `PostProcessor`.
- [#420]: Ability to fuse the "unk" token in BPE.
### Changed
- [#360]: Lots of improvements related to words/alignment tracking
- [#426]: Improvements on error messages thanks to PyO3 0.12
## [0.8.1]
### Fixed
- [#333]: Fix deserialization of `AddedToken`, where the content was not restored properly
### Changed
- [#329]: Improved warning and behavior when we detect a fork
- [#330]: BertNormalizer now keeps the same behavior than the original implementation when
`strip_accents` is not specified.
## [0.8.0]
### Highlights of this release
- We can now encode both pre-tokenized inputs, and raw strings. This is especially usefull when
processing datasets that are already pre-tokenized like for NER (Name Entity Recognition), and helps
while applying labels to each word.
- Full tokenizer serialization. It is now easy to save a tokenizer to a single JSON file, to later
load it back with just one line of code. That's what sharing a Tokenizer means now: 1 line of code.
- With the serialization comes the compatibility with `Pickle`! The Tokenizer, all of its components,
Encodings, everything can be pickled!
- Training a tokenizer is now even faster (up to 5-10x) than before!
- Compatibility with `multiprocessing`, even when using the `fork` start method. Since this library
makes heavy use of the multithreading capacities of our computers to allows a very fast tokenization,
this led to problems (deadlocks) when used with `multiprocessing`. This version now allows to
disable the parallelism, and will warn you if this is necessary.
- And a lot of other improvements, and fixes.
### Fixed
- [#286]: Fix various crash when training a BPE model
- [#309]: Fixed a few bugs related to additional vocabulary/tokens
### Added
- [#272]: Serialization of the `Tokenizer` and all the parts (`PreTokenizer`, `Normalizer`, ...).
This adds some methods to easily save/load an entire tokenizer (`from_str`, `from_file`).
- [#273]: `Tokenizer` and its parts are now pickable
- [#289]: Ability to pad to a multiple of a specified value. This is especially useful to ensure
activation of the Tensor Cores, while ensuring padding to a multiple of 8. Use with
`enable_padding(pad_to_multiple_of=8)` for example.
- [#298]: Ability to get the currently set truncation/padding params
- [#311]: Ability to enable/disable the parallelism using the `TOKENIZERS_PARALLELISM` environment
variable. This is especially usefull when using `multiprocessing` capabilities, with the `fork`
start method, which happens to be the default on Linux systems. Without disabling the parallelism,
the process dead-locks while encoding. (Cf [#187] for more information)
### Changed
- Improved errors generated during truncation: When the provided max length is too low are
now handled properly.
- [#249] `encode` and `encode_batch` now accept pre-tokenized inputs. When the input is pre-tokenized,
the argument `is_pretokenized=True` must be specified.
- [#276]: Improve BPE training speeds, by reading files sequentially, but parallelizing the
processing of each file
- [#280]: Use `onig` for byte-level pre-tokenization to remove all the differences with the original
implementation from GPT-2
- [#309]: Improved the management of the additional vocabulary. This introduces an option
`normalized`, controlling whether a token should be extracted from the normalized version of the
input text.
## [0.7.0]
### Changed
- Only one progress bar while reading files during training. This is better for use-cases with
a high number of files as it avoids having too many progress bars on screen. Also avoids reading the
size of each file before starting to actually read these files, as this process could take really
long.
- [#193]: `encode` and `encode_batch` now take a new optional argument, specifying whether we
should add the special tokens. This is activated by default.
- [#197]: `original_str` and `normalized_str` have been removed from the `Encoding` returned by
`encode` and `encode_batch`. This brings a reduction of 70% of the memory footprint.
- [#197]: The offsets provided on `Encoding` are now relative to the original string, and not the
normalized one anymore.
- The added token given to `add_special_tokens` or `add_tokens` on a `Tokenizer`, or while using
`train(special_tokens=...)` can now be instances of `AddedToken` to provide more control over these
tokens.
- [#136]: Updated Pyo3 version
- [#136]: Static methods `Model.from_files` and `Model.empty` are removed in favor of using
constructors.
- [#239]: `CharBPETokenizer` now corresponds to OpenAI GPT BPE implementation by default.
### Added
- [#188]: `ByteLevel` is also a `PostProcessor` now and handles trimming the offsets if activated.
This avoids the unintuitive inclusion of the whitespaces in the produced offsets, even if these
whitespaces are part of the actual token.
It has been added to `ByteLevelBPETokenizer` but it is off by default (`trim_offsets=False`).
- [#236]: `RobertaProcessing` also handles trimming the offsets.
- [#234]: New alignment mappings on the `Encoding`. Provide methods to easily convert between `char`
or `word` (input space) and `token` (output space).
- `post_process` can be called on the `Tokenizer`
- [#208]: Ability to retrieve the vocabulary from the `Tokenizer` with
`get_vocab(with_added_tokens: bool)`
- [#136] Models can now be instantiated through object constructors.
### Fixed
- [#193]: Fix some issues with the offsets being wrong with the `ByteLevel` BPE:
- when `add_prefix_space=True`
- [#156]: when a Unicode character gets split-up in multiple byte-level characters
- Fix a bug where offsets were wrong when there was any added tokens in the sequence being encoded.
- [#175]: Fix a bug that prevented the addition of more than a certain amount of tokens (even if
not advised, but that's not the question).
- [#205]: Trim the decoded string in `BPEDecoder` used by `CharBPETokenizer`
### How to migrate
- Add the `ByteLevel` `PostProcessor` to your byte-level BPE tokenizers if relevant. If you are
using `ByteLevelBPETokenizer`, this option is disabled by default (`trim_offsets=False`).
- `BertWordPieceTokenizer` option to `add_special_tokens` must now be given to `encode` or
`encode_batch`
- Access to the `original_str` on the `Encoding` has been removed. The original string is the input
of `encode` so it didn't make sense to keep it here.
- No need to call `original_str.offsets(offsets[N])` to convert offsets to the original string. They
are now relative to the original string by default.
- Access to the `normalized_str` on the `Encoding` has been removed. Can be retrieved by calling
`normalize(sequence)` on the `Tokenizer`
- Change `Model.from_files` and `Model.empty` to use constructor. The model constructor should take
the same arguments as the old methods. (ie `BPE(vocab, merges)` or `BPE()`)
- If you were using the `CharBPETokenizer` and want to keep the same behavior as before, set
`bert_normalizer=False` and `split_on_whitespace_only=True`.
## [0.6.0]
### Changed
- [#165]: Big improvements in speed for BPE (Both training and tokenization)
### Fixed
- [#160]: Some default tokens were missing from `BertWordPieceTokenizer`
- [#156]: There was a bug in ByteLevel PreTokenizer that caused offsets to be wrong if a char got
split up in multiple bytes.
- [#174]: The `longest_first` truncation strategy had a bug
## [0.5.2]
- [#163]: Do not open all files directly while training
### Fixed
- We introduced a bug related to the saving of the WordPiece model in 0.5.1: The `vocab.txt` file
was named `vocab.json`. This is now fixed.
- The `WordLevel` model was also saving its vocabulary to the wrong format.
## [0.5.1]
### Changed
- `name` argument is now optional when saving a `Model`'s vocabulary. When the name is not
specified, the files get a more generic naming, like `vocab.json` or `merges.txt`.
## [0.5.0]
### Changed
- [#145]: `BertWordPieceTokenizer` now cleans up some tokenization artifacts while decoding
- [#149]: `ByteLevelBPETokenizer` now has `dropout`.
- `do_lowercase` has been changed to `lowercase` for consistency between the different tokenizers.
(Especially `ByteLevelBPETokenizer` and `CharBPETokenizer`)
- [#139]: Expose `__len__` on `Encoding`
- Improved padding performances.
### Added
- Added a new `Strip` normalizer
### Fixed
- [#145]: Decoding was buggy on `BertWordPieceTokenizer`.
- [#152]: Some documentation and examples were still using the old `BPETokenizer`
### How to migrate
- Use `lowercase` when initializing `ByteLevelBPETokenizer` or `CharBPETokenizer` instead of
`do_lowercase`.
## [0.4.2]
### Fixed
- [#137]: Fix a bug in the class `WordPieceTrainer` that prevented `BertWordPieceTokenizer` from
being trained.
## [0.4.1]
### Fixed
- [#134]: Fix a bug related to the punctuation in BertWordPieceTokenizer
## [0.4.0]
### Changed
- [#131]: Replaced all .new() class methods by a proper __new__ implementation
- Improved typings
### How to migrate
- Remove all `.new` on all classe instanciations
## [0.3.0]
### Changed
- BPETokenizer has been renamed to CharBPETokenizer for clarity.
- Improve truncation/padding and the handling of overflowing tokens. Now when a sequence gets
truncated, we provide a list of overflowing `Encoding` that are ready to be processed by a language
model, just as the main `Encoding`.
- Provide mapping to the original string offsets using:
```
output = tokenizer.encode(...)
print(output.original_str.offsets(output.offsets[3]))
```
- [#99]: Exposed the vocabulary size on all tokenizers
### Added
- Added `CharDelimiterSplit`: a new `PreTokenizer` that allows splitting sequences on the given
delimiter (Works like `.split(delimiter)`)
- Added `WordLevel`: a new model that simply maps `tokens` to their `ids`.
### Fixed
- Fix a bug with IndexableString
- Fix a bug with truncation
### How to migrate
- Rename `BPETokenizer` to `CharBPETokenizer`
- `Encoding.overflowing` is now a List instead of a `Optional[Encoding]`
## [0.2.1]
### Fixed
- Fix a bug with the IDs associated with added tokens.
- Fix a bug that was causing crashes in Python 3.5
[#1096]: https://github.com/huggingface/tokenizers/pull/1096
[#1072]: https://github.com/huggingface/tokenizers/pull/1072
[#956]: https://github.com/huggingface/tokenizers/pull/956
[#1008]: https://github.com/huggingface/tokenizers/pull/1008
[#1009]: https://github.com/huggingface/tokenizers/pull/1009
[#1047]: https://github.com/huggingface/tokenizers/pull/1047
[#1055]: https://github.com/huggingface/tokenizers/pull/1055
[#1051]: https://github.com/huggingface/tokenizers/pull/1051
[#1052]: https://github.com/huggingface/tokenizers/pull/1052
[#938]: https://github.com/huggingface/tokenizers/pull/938
[#939]: https://github.com/huggingface/tokenizers/pull/939
[#952]: https://github.com/huggingface/tokenizers/pull/952
[#954]: https://github.com/huggingface/tokenizers/pull/954
[#962]: https://github.com/huggingface/tokenizers/pull/962
[#961]: https://github.com/huggingface/tokenizers/pull/961
[#960]: https://github.com/huggingface/tokenizers/pull/960
[#919]: https://github.com/huggingface/tokenizers/pull/919
[#916]: https://github.com/huggingface/tokenizers/pull/916
[#895]: https://github.com/huggingface/tokenizers/pull/895
[#884]: https://github.com/huggingface/tokenizers/pull/884
[#882]: https://github.com/huggingface/tokenizers/pull/882
[#868]: https://github.com/huggingface/tokenizers/pull/868
[#860]: https://github.com/huggingface/tokenizers/pull/860
[#850]: https://github.com/huggingface/tokenizers/pull/850
[#844]: https://github.com/huggingface/tokenizers/pull/844
[#845]: https://github.com/huggingface/tokenizers/pull/845
[#851]: https://github.com/huggingface/tokenizers/pull/851
[#585]: https://github.com/huggingface/tokenizers/pull/585
[#793]: https://github.com/huggingface/tokenizers/pull/793
[#780]: https://github.com/huggingface/tokenizers/pull/780
[#770]: https://github.com/huggingface/tokenizers/pull/770
[#762]: https://github.com/huggingface/tokenizers/pull/762
[#718]: https://github.com/huggingface/tokenizers/pull/718
[#714]: https://github.com/huggingface/tokenizers/pull/714
[#707]: https://github.com/huggingface/tokenizers/pull/707
[#693]: https://github.com/huggingface/tokenizers/pull/693
[#686]: https://github.com/huggingface/tokenizers/pull/686
[#674]: https://github.com/huggingface/tokenizers/pull/674
[#657]: https://github.com/huggingface/tokenizers/pull/657
[#656]: https://github.com/huggingface/tokenizers/pull/656
[#652]: https://github.com/huggingface/tokenizers/pull/652
[#621]: https://github.com/huggingface/tokenizers/pull/621
[#620]: https://github.com/huggingface/tokenizers/pull/620
[#618]: https://github.com/huggingface/tokenizers/pull/618
[#617]: https://github.com/huggingface/tokenizers/pull/617
[#616]: https://github.com/huggingface/tokenizers/pull/616
[#590]: https://github.com/huggingface/tokenizers/pull/590
[#574]: https://github.com/huggingface/tokenizers/pull/574
[#544]: https://github.com/huggingface/tokenizers/pull/544
[#542]: https://github.com/huggingface/tokenizers/pull/542
[#539]: https://github.com/huggingface/tokenizers/pull/539
[#538]: https://github.com/huggingface/tokenizers/pull/538
[#533]: https://github.com/huggingface/tokenizers/pull/533
[#530]: https://github.com/huggingface/tokenizers/pull/530
[#519]: https://github.com/huggingface/tokenizers/pull/519
[#509]: https://github.com/huggingface/tokenizers/pull/509
[#508]: https://github.com/huggingface/tokenizers/pull/508
[#506]: https://github.com/huggingface/tokenizers/pull/506
[#500]: https://github.com/huggingface/tokenizers/pull/500
[#498]: https://github.com/huggingface/tokenizers/pull/498
[#492]: https://github.com/huggingface/tokenizers/pull/492
[#481]: https://github.com/huggingface/tokenizers/pull/481
[#480]: https://github.com/huggingface/tokenizers/pull/480
[#477]: https://github.com/huggingface/tokenizers/pull/477
[#476]: https://github.com/huggingface/tokenizers/pull/476
[#470]: https://github.com/huggingface/tokenizers/pull/470
[#464]: https://github.com/huggingface/tokenizers/pull/464
[#459]: https://github.com/huggingface/tokenizers/pull/459
[#420]: https://github.com/huggingface/tokenizers/pull/420
[#417]: https://github.com/huggingface/tokenizers/pull/417
[#416]: https://github.com/huggingface/tokenizers/pull/416
[#403]: https://github.com/huggingface/tokenizers/pull/403
[#394]: https://github.com/huggingface/tokenizers/pull/394
[#389]: https://github.com/huggingface/tokenizers/pull/389
[#379]: https://github.com/huggingface/tokenizers/pull/379
[#378]: https://github.com/huggingface/tokenizers/pull/378
[#363]: https://github.com/huggingface/tokenizers/pull/363
[#362]: https://github.com/huggingface/tokenizers/pull/362
[#360]: https://github.com/huggingface/tokenizers/pull/360
[#355]: https://github.com/huggingface/tokenizers/pull/355
[#333]: https://github.com/huggingface/tokenizers/pull/333
[#330]: https://github.com/huggingface/tokenizers/pull/330
[#329]: https://github.com/huggingface/tokenizers/pull/329
[#311]: https://github.com/huggingface/tokenizers/pull/311
[#309]: https://github.com/huggingface/tokenizers/pull/309
[#292]: https://github.com/huggingface/tokenizers/pull/292
[#289]: https://github.com/huggingface/tokenizers/pull/289
[#286]: https://github.com/huggingface/tokenizers/pull/286
[#280]: https://github.com/huggingface/tokenizers/pull/280
[#276]: https://github.com/huggingface/tokenizers/pull/276
[#273]: https://github.com/huggingface/tokenizers/pull/273
[#272]: https://github.com/huggingface/tokenizers/pull/272
[#249]: https://github.com/huggingface/tokenizers/pull/249
[#239]: https://github.com/huggingface/tokenizers/pull/239
[#236]: https://github.com/huggingface/tokenizers/pull/236
[#234]: https://github.com/huggingface/tokenizers/pull/234
[#208]: https://github.com/huggingface/tokenizers/pull/208
[#205]: https://github.com/huggingface/tokenizers/issues/205
[#197]: https://github.com/huggingface/tokenizers/pull/197
[#193]: https://github.com/huggingface/tokenizers/pull/193
[#190]: https://github.com/huggingface/tokenizers/pull/190
[#188]: https://github.com/huggingface/tokenizers/pull/188
[#187]: https://github.com/huggingface/tokenizers/issues/187
[#175]: https://github.com/huggingface/tokenizers/issues/175
[#174]: https://github.com/huggingface/tokenizers/issues/174
[#165]: https://github.com/huggingface/tokenizers/pull/165
[#163]: https://github.com/huggingface/tokenizers/issues/163
[#160]: https://github.com/huggingface/tokenizers/issues/160
[#156]: https://github.com/huggingface/tokenizers/pull/156
[#152]: https://github.com/huggingface/tokenizers/issues/152
[#149]: https://github.com/huggingface/tokenizers/issues/149
[#145]: https://github.com/huggingface/tokenizers/issues/145
[#139]: https://github.com/huggingface/tokenizers/issues/139
[#137]: https://github.com/huggingface/tokenizers/issues/137
[#134]: https://github.com/huggingface/tokenizers/issues/134
[#131]: https://github.com/huggingface/tokenizers/issues/131
[#99]: https://github.com/huggingface/tokenizers/pull/99
| tokenizers/bindings/python/CHANGELOG.md/0 | {
"file_path": "tokenizers/bindings/python/CHANGELOG.md",
"repo_id": "tokenizers",
"token_count": 7408
} | 223 |
from .base_tokenizer import BaseTokenizer
from .bert_wordpiece import BertWordPieceTokenizer
from .byte_level_bpe import ByteLevelBPETokenizer
from .char_level_bpe import CharBPETokenizer
from .sentencepiece_bpe import SentencePieceBPETokenizer
from .sentencepiece_unigram import SentencePieceUnigramTokenizer
| tokenizers/bindings/python/py_src/tokenizers/implementations/__init__.py/0 | {
"file_path": "tokenizers/bindings/python/py_src/tokenizers/implementations/__init__.py",
"repo_id": "tokenizers",
"token_count": 94
} | 224 |
.tokenized-text {
width:100%;
padding:2rem;
max-height: 400px;
overflow-y: auto;
box-sizing:border-box;
line-height:4rem; /* Lots of space between lines */
font-family: "Roboto Light", "Ubuntu Light", "Ubuntu", monospace;
box-shadow: 2px 2px 2px rgba(0,0,0,0.2);
background-color: rgba(0,0,0,0.01);
letter-spacing:2px; /* Give some extra separation between chars */
}
.non-token{
/* White space and other things the tokenizer ignores*/
white-space: pre;
letter-spacing:4px;
border-top:1px solid #A0A0A0; /* A gentle border on top and bottom makes tabs more ovious*/
border-bottom:1px solid #A0A0A0;
line-height: 1rem;
height: calc(100% - 2px);
}
.token {
white-space: pre;
position:relative;
color:black;
letter-spacing:2px;
}
.annotation{
white-space:nowrap; /* Important - ensures that annotations appears even if the annotated text wraps a line */
border-radius:4px;
position:relative;
width:fit-content;
}
.annotation:before {
/*The before holds the text and the after holds the background*/
z-index:1000; /* Make sure this is above the background */
content:attr(data-label); /* The annotations label is on a data attribute */
color:white;
position:absolute;
font-size:1rem;
text-align:center;
font-weight:bold;
top:1.75rem;
line-height:0;
left:0;
width:100%;
padding:0.5rem 0;
/* These make it so an annotation doesn't stretch beyond the annotated text if the label is longer*/
overflow: hidden;
white-space: nowrap;
text-overflow:ellipsis;
}
.annotation:after {
content:attr(data-label); /* The content defines the width of the annotation*/
position:absolute;
font-size:0.75rem;
text-align:center;
font-weight:bold;
text-overflow:ellipsis;
top:1.75rem;
line-height:0;
overflow: hidden;
white-space: nowrap;
left:0;
width:100%; /* 100% of the parent, which is the annotation whose width is the tokens inside it*/
padding:0.5rem 0;
/* Nast hack below:
We set the annotations color in code because we don't know the colors at css time.
But you can't pass a color as a data attribute to get it into the pseudo element (this thing)
So to get around that, annotations have the color set on them with a style attribute and then we
can get the color with currentColor.
Annotations wrap tokens and tokens set the color back to black
*/
background-color: currentColor;
}
.annotation:hover::after, .annotation:hover::before{
/* When the user hovers over an annotation expand the label to display in full
*/
min-width: fit-content;
}
.annotation:hover{
/* Emphasize the annotation start end with a border on hover*/
border-color: currentColor;
border: 2px solid;
}
.special-token:not(:empty){
/*
A none empty special token is like UNK (as opposed to CLS which has no representation in the text )
*/
position:relative;
}
.special-token:empty::before{
/* Special tokens that don't have text are displayed as pseudo elements so we dont select them with the mouse*/
content:attr(data-stok);
background:#202020;
font-size:0.75rem;
color:white;
margin: 0 0.25rem;
padding: 0.25rem;
border-radius:4px
}
.special-token:not(:empty):before {
/* Special tokens that have text (UNK) are displayed above the actual text*/
content:attr(data-stok);
position:absolute;
bottom:1.75rem;
min-width:100%;
width:100%;
height:1rem;
line-height:1rem;
font-size:1rem;
text-align:center;
color:white;
font-weight:bold;
background:#202020;
border-radius:10%;
}
/*
We want to alternate the color of tokens, but we can't use nth child because tokens might be broken up by annotations
instead we apply even and odd class at generation time and color them that way
*/
.even-token{
background:#DCDCDC ;
border: 1px solid #DCDCDC;
}
.odd-token{
background:#A0A0A0;
border: 1px solid #A0A0A0;
}
.even-token.multi-token,.odd-token.multi-token{
background: repeating-linear-gradient(
45deg,
transparent,
transparent 1px,
#ccc 1px,
#ccc 1px
),
/* on "bottom" */
linear-gradient(
to bottom,
#FFB6C1,
#999
);
}
.multi-token:hover::after {
content:"This char has more than 1 token"; /* The content defines the width of the annotation*/
color:white;
background-color: black;
position:absolute;
font-size:0.75rem;
text-align:center;
font-weight:bold;
text-overflow:ellipsis;
top:1.75rem;
line-height:0;
overflow: hidden;
white-space: nowrap;
left:0;
width:fit-content; /* 100% of the parent, which is the annotation whose width is the tokens inside it*/
padding:0.5rem 0;
}
| tokenizers/bindings/python/py_src/tokenizers/tools/visualizer-styles.css/0 | {
"file_path": "tokenizers/bindings/python/py_src/tokenizers/tools/visualizer-styles.css",
"repo_id": "tokenizers",
"token_count": 1806
} | 225 |
use std::sync::{Arc, RwLock};
use pyo3::exceptions;
use pyo3::prelude::*;
use pyo3::types::*;
use serde::ser::SerializeStruct;
use serde::{Deserialize, Deserializer, Serialize, Serializer};
use tk::normalizer::SplitDelimiterBehavior;
use tk::pre_tokenizers::bert::BertPreTokenizer;
use tk::pre_tokenizers::byte_level::ByteLevel;
use tk::pre_tokenizers::delimiter::CharDelimiterSplit;
use tk::pre_tokenizers::digits::Digits;
use tk::pre_tokenizers::metaspace::{Metaspace, PrependScheme};
use tk::pre_tokenizers::punctuation::Punctuation;
use tk::pre_tokenizers::split::Split;
use tk::pre_tokenizers::unicode_scripts::UnicodeScripts;
use tk::pre_tokenizers::whitespace::{Whitespace, WhitespaceSplit};
use tk::pre_tokenizers::PreTokenizerWrapper;
use tk::tokenizer::Offsets;
use tk::{PreTokenizedString, PreTokenizer};
use tokenizers as tk;
use super::error::ToPyResult;
use super::utils::*;
/// Base class for all pre-tokenizers
///
/// This class is not supposed to be instantiated directly. Instead, any implementation of a
/// PreTokenizer will return an instance of this class when instantiated.
#[pyclass(
dict,
module = "tokenizers.pre_tokenizers",
name = "PreTokenizer",
subclass
)]
#[derive(Clone, Serialize, Deserialize)]
pub struct PyPreTokenizer {
#[serde(flatten)]
pub(crate) pretok: PyPreTokenizerTypeWrapper,
}
impl PyPreTokenizer {
#[allow(dead_code)]
pub(crate) fn new(pretok: PyPreTokenizerTypeWrapper) -> Self {
PyPreTokenizer { pretok }
}
pub(crate) fn get_as_subtype(&self, py: Python<'_>) -> PyResult<PyObject> {
let base = self.clone();
Ok(match &self.pretok {
PyPreTokenizerTypeWrapper::Sequence(_) => {
Py::new(py, (PySequence {}, base))?.into_py(py)
}
PyPreTokenizerTypeWrapper::Single(ref inner) => {
match &*inner.as_ref().read().unwrap() {
PyPreTokenizerWrapper::Custom(_) => Py::new(py, base)?.into_py(py),
PyPreTokenizerWrapper::Wrapped(inner) => match inner {
PreTokenizerWrapper::Whitespace(_) => {
Py::new(py, (PyWhitespace {}, base))?.into_py(py)
}
PreTokenizerWrapper::Split(_) => {
Py::new(py, (PySplit {}, base))?.into_py(py)
}
PreTokenizerWrapper::Punctuation(_) => {
Py::new(py, (PyPunctuation {}, base))?.into_py(py)
}
PreTokenizerWrapper::Sequence(_) => {
Py::new(py, (PySequence {}, base))?.into_py(py)
}
PreTokenizerWrapper::Metaspace(_) => {
Py::new(py, (PyMetaspace {}, base))?.into_py(py)
}
PreTokenizerWrapper::Delimiter(_) => {
Py::new(py, (PyCharDelimiterSplit {}, base))?.into_py(py)
}
PreTokenizerWrapper::WhitespaceSplit(_) => {
Py::new(py, (PyWhitespaceSplit {}, base))?.into_py(py)
}
PreTokenizerWrapper::ByteLevel(_) => {
Py::new(py, (PyByteLevel {}, base))?.into_py(py)
}
PreTokenizerWrapper::BertPreTokenizer(_) => {
Py::new(py, (PyBertPreTokenizer {}, base))?.into_py(py)
}
PreTokenizerWrapper::Digits(_) => {
Py::new(py, (PyDigits {}, base))?.into_py(py)
}
PreTokenizerWrapper::UnicodeScripts(_) => {
Py::new(py, (PyUnicodeScripts {}, base))?.into_py(py)
}
},
}
}
})
}
}
impl PreTokenizer for PyPreTokenizer {
fn pre_tokenize(&self, normalized: &mut PreTokenizedString) -> tk::Result<()> {
self.pretok.pre_tokenize(normalized)
}
}
#[pymethods]
impl PyPreTokenizer {
#[staticmethod]
fn custom(pretok: PyObject) -> Self {
PyPreTokenizer {
pretok: PyPreTokenizerWrapper::Custom(CustomPreTokenizer::new(pretok)).into(),
}
}
fn __getstate__(&self, py: Python) -> PyResult<PyObject> {
let data = serde_json::to_string(&self.pretok).map_err(|e| {
exceptions::PyException::new_err(format!(
"Error while attempting to pickle PreTokenizer: {}",
e
))
})?;
Ok(PyBytes::new(py, data.as_bytes()).to_object(py))
}
fn __setstate__(&mut self, py: Python, state: PyObject) -> PyResult<()> {
match state.extract::<&PyBytes>(py) {
Ok(s) => {
let unpickled = serde_json::from_slice(s.as_bytes()).map_err(|e| {
exceptions::PyException::new_err(format!(
"Error while attempting to unpickle PreTokenizer: {}",
e
))
})?;
self.pretok = unpickled;
Ok(())
}
Err(e) => Err(e),
}
}
/// Pre-tokenize a :class:`~tokenizers.PyPreTokenizedString` in-place
///
/// This method allows to modify a :class:`~tokenizers.PreTokenizedString` to
/// keep track of the pre-tokenization, and leverage the capabilities of the
/// :class:`~tokenizers.PreTokenizedString`. If you just want to see the result of
/// the pre-tokenization of a raw string, you can use
/// :meth:`~tokenizers.pre_tokenizers.PreTokenizer.pre_tokenize_str`
///
/// Args:
/// pretok (:class:`~tokenizers.PreTokenizedString):
/// The pre-tokenized string on which to apply this
/// :class:`~tokenizers.pre_tokenizers.PreTokenizer`
#[pyo3(text_signature = "(self, pretok)")]
fn pre_tokenize(&self, pretok: &mut PyPreTokenizedString) -> PyResult<()> {
ToPyResult(self.pretok.pre_tokenize(&mut pretok.pretok)).into()
}
/// Pre tokenize the given string
///
/// This method provides a way to visualize the effect of a
/// :class:`~tokenizers.pre_tokenizers.PreTokenizer` but it does not keep track of the
/// alignment, nor does it provide all the capabilities of the
/// :class:`~tokenizers.PreTokenizedString`. If you need some of these, you can use
/// :meth:`~tokenizers.pre_tokenizers.PreTokenizer.pre_tokenize`
///
/// Args:
/// sequence (:obj:`str`):
/// A string to pre-tokeize
///
/// Returns:
/// :obj:`List[Tuple[str, Offsets]]`:
/// A list of tuple with the pre-tokenized parts and their offsets
#[pyo3(text_signature = "(self, sequence)")]
fn pre_tokenize_str(&self, s: &str) -> PyResult<Vec<(String, Offsets)>> {
let mut pretokenized = tk::tokenizer::PreTokenizedString::from(s);
ToPyResult(self.pretok.pre_tokenize(&mut pretokenized)).into_py()?;
Ok(pretokenized
.get_splits(tk::OffsetReferential::Original, tk::OffsetType::Char)
.into_iter()
.map(|(s, o, _)| (s.to_owned(), o))
.collect())
}
}
macro_rules! getter {
($self: ident, $variant: ident, $($name: tt)+) => {{
let super_ = $self.as_ref();
if let PyPreTokenizerTypeWrapper::Single(ref single) = super_.pretok {
if let PyPreTokenizerWrapper::Wrapped(PreTokenizerWrapper::$variant(ref pretok)) =
*single.read().unwrap() {
pretok.$($name)+
} else {
unreachable!()
}
} else {
unreachable!()
}
}};
}
macro_rules! setter {
($self: ident, $variant: ident, $name: ident, $value: expr) => {{
let super_ = $self.as_ref();
if let PyPreTokenizerTypeWrapper::Single(ref single) = super_.pretok {
if let PyPreTokenizerWrapper::Wrapped(PreTokenizerWrapper::$variant(ref mut pretok)) =
*single.write().unwrap()
{
pretok.$name = $value;
}
}
}};
($self: ident, $variant: ident, @$name: ident, $value: expr) => {{
let super_ = $self.as_ref();
if let PyPreTokenizerTypeWrapper::Single(ref single) = super_.pretok {
if let PyPreTokenizerWrapper::Wrapped(PreTokenizerWrapper::$variant(ref mut pretok)) =
*single.write().unwrap()
{
pretok.$name($value);
}
}
}};
}
/// ByteLevel PreTokenizer
///
/// This pre-tokenizer takes care of replacing all bytes of the given string
/// with a corresponding representation, as well as splitting into words.
///
/// Args:
/// add_prefix_space (:obj:`bool`, `optional`, defaults to :obj:`True`):
/// Whether to add a space to the first word if there isn't already one. This
/// lets us treat `hello` exactly like `say hello`.
/// use_regex (:obj:`bool`, `optional`, defaults to :obj:`True`):
/// Set this to :obj:`False` to prevent this `pre_tokenizer` from using
/// the GPT2 specific regexp for spliting on whitespace.
#[pyclass(extends=PyPreTokenizer, module = "tokenizers.pre_tokenizers", name = "ByteLevel")]
pub struct PyByteLevel {}
#[pymethods]
impl PyByteLevel {
#[getter]
fn get_add_prefix_space(self_: PyRef<Self>) -> bool {
getter!(self_, ByteLevel, add_prefix_space)
}
#[setter]
fn set_add_prefix_space(self_: PyRef<Self>, add_prefix_space: bool) {
setter!(self_, ByteLevel, add_prefix_space, add_prefix_space);
}
#[getter]
fn get_use_regex(self_: PyRef<Self>) -> bool {
getter!(self_, ByteLevel, use_regex)
}
#[setter]
fn set_use_regex(self_: PyRef<Self>, use_regex: bool) {
setter!(self_, ByteLevel, use_regex, use_regex);
}
#[new]
#[pyo3(signature = (add_prefix_space = true, use_regex = true, **_kwargs), text_signature = "(self, add_prefix_space=True, use_regex=True)")]
fn new(
add_prefix_space: bool,
use_regex: bool,
_kwargs: Option<&PyDict>,
) -> (Self, PyPreTokenizer) {
(
PyByteLevel {},
ByteLevel::default()
.add_prefix_space(add_prefix_space)
.use_regex(use_regex)
.into(),
)
}
/// Returns the alphabet used by this PreTokenizer.
///
/// Since the ByteLevel works as its name suggests, at the byte level, it
/// encodes each byte value to a unique visible character. This means that there is a
/// total of 256 different characters composing this alphabet.
///
/// Returns:
/// :obj:`List[str]`: A list of characters that compose the alphabet
#[staticmethod]
#[pyo3(text_signature = "()")]
fn alphabet() -> Vec<String> {
ByteLevel::alphabet()
.into_iter()
.map(|c| c.to_string())
.collect()
}
}
/// This pre-tokenizer simply splits using the following regex: `\w+|[^\w\s]+`
#[pyclass(extends=PyPreTokenizer, module = "tokenizers.pre_tokenizers", name = "Whitespace")]
pub struct PyWhitespace {}
#[pymethods]
impl PyWhitespace {
#[new]
#[pyo3(text_signature = "(self)")]
fn new() -> (Self, PyPreTokenizer) {
(PyWhitespace {}, Whitespace {}.into())
}
}
/// This pre-tokenizer simply splits on the whitespace. Works like `.split()`
#[pyclass(extends=PyPreTokenizer, module = "tokenizers.pre_tokenizers", name = "WhitespaceSplit")]
pub struct PyWhitespaceSplit {}
#[pymethods]
impl PyWhitespaceSplit {
#[new]
#[pyo3(text_signature = "(self)")]
fn new() -> (Self, PyPreTokenizer) {
(PyWhitespaceSplit {}, WhitespaceSplit.into())
}
}
/// Split PreTokenizer
///
/// This versatile pre-tokenizer splits using the provided pattern and
/// according to the provided behavior. The pattern can be inverted by
/// making use of the invert flag.
///
/// Args:
/// pattern (:obj:`str` or :class:`~tokenizers.Regex`):
/// A pattern used to split the string. Usually a string or a a regex built with `tokenizers.Regex`
///
/// behavior (:class:`~tokenizers.SplitDelimiterBehavior`):
/// The behavior to use when splitting.
/// Choices: "removed", "isolated", "merged_with_previous", "merged_with_next",
/// "contiguous"
///
/// invert (:obj:`bool`, `optional`, defaults to :obj:`False`):
/// Whether to invert the pattern.
#[pyclass(extends=PyPreTokenizer, module = "tokenizers.pre_tokenizers", name = "Split")]
pub struct PySplit {}
#[pymethods]
impl PySplit {
#[new]
#[pyo3(signature = (pattern, behavior, invert = false), text_signature = "(self, pattern, behavior, invert=False)")]
fn new(
pattern: PyPattern,
behavior: PySplitDelimiterBehavior,
invert: bool,
) -> PyResult<(Self, PyPreTokenizer)> {
Ok((
PySplit {},
ToPyResult(Split::new(pattern, behavior.into(), invert))
.into_py()?
.into(),
))
}
fn __getnewargs__<'p>(&self, py: Python<'p>) -> &'p PyTuple {
PyTuple::new(py, [" ", "removed"])
}
}
/// This pre-tokenizer simply splits on the provided char. Works like `.split(delimiter)`
///
/// Args:
/// delimiter: str:
/// The delimiter char that will be used to split input
#[pyclass(extends=PyPreTokenizer, module = "tokenizers.pre_tokenizers", name = "CharDelimiterSplit")]
pub struct PyCharDelimiterSplit {}
#[pymethods]
impl PyCharDelimiterSplit {
#[getter]
fn get_delimiter(self_: PyRef<Self>) -> String {
getter!(self_, Delimiter, delimiter.to_string())
}
#[setter]
fn set_delimiter(self_: PyRef<Self>, delimiter: PyChar) {
setter!(self_, Delimiter, delimiter, delimiter.0);
}
#[new]
#[pyo3(text_signature = None)]
pub fn new(delimiter: PyChar) -> PyResult<(Self, PyPreTokenizer)> {
Ok((
PyCharDelimiterSplit {},
CharDelimiterSplit::new(delimiter.0).into(),
))
}
fn __getnewargs__<'p>(&self, py: Python<'p>) -> &'p PyTuple {
PyTuple::new(py, [" "])
}
}
/// BertPreTokenizer
///
/// This pre-tokenizer splits tokens on spaces, and also on punctuation.
/// Each occurence of a punctuation character will be treated separately.
#[pyclass(extends=PyPreTokenizer, module = "tokenizers.pre_tokenizers", name = "BertPreTokenizer")]
pub struct PyBertPreTokenizer {}
#[pymethods]
impl PyBertPreTokenizer {
#[new]
#[pyo3(text_signature = "(self)")]
fn new() -> (Self, PyPreTokenizer) {
(PyBertPreTokenizer {}, BertPreTokenizer.into())
}
}
/// This pre-tokenizer simply splits on punctuation as individual characters.
///
/// Args:
/// behavior (:class:`~tokenizers.SplitDelimiterBehavior`):
/// The behavior to use when splitting.
/// Choices: "removed", "isolated" (default), "merged_with_previous", "merged_with_next",
/// "contiguous"
#[pyclass(extends=PyPreTokenizer, module = "tokenizers.pre_tokenizers", name = "Punctuation")]
pub struct PyPunctuation {}
#[pymethods]
impl PyPunctuation {
#[new]
#[pyo3( signature = (behavior = PySplitDelimiterBehavior(SplitDelimiterBehavior::Isolated)), text_signature = "(self, behavior=\"isolated\")")]
fn new(behavior: PySplitDelimiterBehavior) -> (Self, PyPreTokenizer) {
(PyPunctuation {}, Punctuation::new(behavior.into()).into())
}
}
/// This pre-tokenizer composes other pre_tokenizers and applies them in sequence
#[pyclass(extends=PyPreTokenizer, module = "tokenizers.pre_tokenizers", name = "Sequence")]
pub struct PySequence {}
#[pymethods]
impl PySequence {
#[new]
#[pyo3(text_signature = "(self, pretokenizers)")]
fn new(pre_tokenizers: &PyList) -> PyResult<(Self, PyPreTokenizer)> {
let mut sequence = Vec::with_capacity(pre_tokenizers.len());
for n in pre_tokenizers.iter() {
let pretokenizer: PyRef<PyPreTokenizer> = n.extract()?;
match &pretokenizer.pretok {
PyPreTokenizerTypeWrapper::Sequence(inner) => {
sequence.extend(inner.iter().cloned())
}
PyPreTokenizerTypeWrapper::Single(inner) => sequence.push(inner.clone()),
}
}
Ok((
PySequence {},
PyPreTokenizer::new(PyPreTokenizerTypeWrapper::Sequence(sequence)),
))
}
fn __getnewargs__<'p>(&self, py: Python<'p>) -> &'p PyTuple {
PyTuple::new(py, [PyList::empty(py)])
}
}
fn from_string(string: String) -> Result<PrependScheme, PyErr> {
let scheme = match string.as_str() {
"first" => PrependScheme::First,
"never" => PrependScheme::Never,
"always" => PrependScheme::Always,
_ => {
return Err(exceptions::PyValueError::new_err(format!(
"{} is an unknown variant, should be one of ['first', 'never', 'always']",
string
)));
}
};
Ok(scheme)
}
/// Metaspace pre-tokenizer
///
/// This pre-tokenizer replaces any whitespace by the provided replacement character.
/// It then tries to split on these spaces.
///
/// Args:
/// replacement (:obj:`str`, `optional`, defaults to :obj:`▁`):
/// The replacement character. Must be exactly one character. By default we
/// use the `▁` (U+2581) meta symbol (Same as in SentencePiece).
///
/// add_prefix_space (:obj:`bool`, `optional`, defaults to :obj:`True`):
/// Whether to add a space to the first word if there isn't already one. This
/// lets us treat `hello` exactly like `say hello`.
#[pyclass(extends=PyPreTokenizer, module = "tokenizers.pre_tokenizers", name = "Metaspace")]
pub struct PyMetaspace {}
#[pymethods]
impl PyMetaspace {
#[getter]
fn get_replacement(self_: PyRef<Self>) -> String {
getter!(self_, Metaspace, get_replacement().to_string())
}
#[setter]
fn set_replacement(self_: PyRef<Self>, replacement: PyChar) {
setter!(self_, Metaspace, @set_replacement, replacement.0);
}
#[getter]
fn get_add_prefix_space(self_: PyRef<Self>) -> bool {
getter!(self_, Metaspace, add_prefix_space)
}
#[setter]
fn set_add_prefix_space(self_: PyRef<Self>, add_prefix_space: bool) {
setter!(self_, Metaspace, add_prefix_space, add_prefix_space);
}
#[getter]
fn get_prepend_scheme(self_: PyRef<Self>) -> String {
// Assuming Metaspace has a method to get the prepend_scheme as a string
let scheme: PrependScheme = getter!(self_, Metaspace, get_prepend_scheme());
match scheme {
PrependScheme::First => "first",
PrependScheme::Never => "never",
PrependScheme::Always => "always",
}
.to_string()
}
#[setter]
fn set_prepend_scheme(self_: PyRef<Self>, prepend_scheme: String) -> PyResult<()> {
let scheme = from_string(prepend_scheme)?;
setter!(self_, Metaspace, @set_prepend_scheme, scheme);
Ok(())
}
#[new]
#[pyo3(signature = (replacement = PyChar('▁'), add_prefix_space = true, prepend_scheme=None, **_kwargs), text_signature = "(self, replacement=\"_\", add_prefix_space=True)")]
fn new(
replacement: PyChar,
add_prefix_space: bool,
prepend_scheme: Option<String>,
_kwargs: Option<&PyDict>,
) -> PyResult<(Self, PyPreTokenizer)> {
// Create a new Metaspace instance
let mut new_instance: Metaspace = Metaspace::new(replacement.0, add_prefix_space);
// If a prepend scheme is provided, set it
if let Some(prepend_scheme) = prepend_scheme {
match from_string(prepend_scheme) {
Ok(prepend_scheme_enum) => new_instance.set_prepend_scheme(prepend_scheme_enum),
Err(err) => return Err(err),
}
}
Ok((PyMetaspace {}, new_instance.into()))
}
}
/// This pre-tokenizer simply splits using the digits in separate tokens
///
/// Args:
/// individual_digits (:obj:`bool`, `optional`, defaults to :obj:`False`):
/// If set to True, digits will each be separated as follows::
///
/// "Call 123 please" -> "Call ", "1", "2", "3", " please"
///
/// If set to False, digits will grouped as follows::
///
/// "Call 123 please" -> "Call ", "123", " please"
#[pyclass(extends=PyPreTokenizer, module = "tokenizers.pre_tokenizers", name = "Digits")]
pub struct PyDigits {}
#[pymethods]
impl PyDigits {
#[getter]
fn get_individual_digits(self_: PyRef<Self>) -> bool {
getter!(self_, Digits, individual_digits)
}
#[setter]
fn set_individual_digits(self_: PyRef<Self>, individual_digits: bool) {
setter!(self_, Digits, individual_digits, individual_digits);
}
#[new]
#[pyo3(signature = (individual_digits = false), text_signature = "(self, individual_digits=False)")]
fn new(individual_digits: bool) -> (Self, PyPreTokenizer) {
(PyDigits {}, Digits::new(individual_digits).into())
}
}
/// This pre-tokenizer splits on characters that belong to different language family
/// It roughly follows https://github.com/google/sentencepiece/blob/master/data/Scripts.txt
/// Actually Hiragana and Katakana are fused with Han, and 0x30FC is Han too.
/// This mimicks SentencePiece Unigram implementation.
#[pyclass(extends=PyPreTokenizer, module = "tokenizers.pre_tokenizers", name = "UnicodeScripts")]
pub struct PyUnicodeScripts {}
#[pymethods]
impl PyUnicodeScripts {
#[new]
#[pyo3(text_signature = "(self)")]
fn new() -> (Self, PyPreTokenizer) {
(PyUnicodeScripts {}, UnicodeScripts::new().into())
}
}
#[derive(Clone)]
pub(crate) struct CustomPreTokenizer {
inner: PyObject,
}
impl CustomPreTokenizer {
pub fn new(inner: PyObject) -> Self {
Self { inner }
}
}
impl tk::tokenizer::PreTokenizer for CustomPreTokenizer {
fn pre_tokenize(&self, sentence: &mut PreTokenizedString) -> tk::Result<()> {
Python::with_gil(|py| {
let pretok = PyPreTokenizedStringRefMut::new(sentence);
let py_pretok = self.inner.as_ref(py);
py_pretok.call_method("pre_tokenize", (pretok.get(),), None)?;
Ok(())
})
}
}
impl Serialize for CustomPreTokenizer {
fn serialize<S>(&self, _serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
Err(serde::ser::Error::custom(
"Custom PreTokenizer cannot be serialized",
))
}
}
impl<'de> Deserialize<'de> for CustomPreTokenizer {
fn deserialize<D>(_deserializer: D) -> Result<Self, D::Error>
where
D: Deserializer<'de>,
{
Err(serde::de::Error::custom(
"Custom PreTokenizer cannot be deserialized",
))
}
}
#[derive(Clone, Deserialize)]
#[serde(untagged)]
pub(crate) enum PyPreTokenizerWrapper {
Custom(CustomPreTokenizer),
Wrapped(PreTokenizerWrapper),
}
impl Serialize for PyPreTokenizerWrapper {
fn serialize<S>(&self, serializer: S) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error>
where
S: Serializer,
{
match self {
PyPreTokenizerWrapper::Wrapped(inner) => inner.serialize(serializer),
PyPreTokenizerWrapper::Custom(inner) => inner.serialize(serializer),
}
}
}
#[derive(Clone, Deserialize)]
#[serde(untagged)]
pub(crate) enum PyPreTokenizerTypeWrapper {
Sequence(Vec<Arc<RwLock<PyPreTokenizerWrapper>>>),
Single(Arc<RwLock<PyPreTokenizerWrapper>>),
}
impl Serialize for PyPreTokenizerTypeWrapper {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
match self {
PyPreTokenizerTypeWrapper::Sequence(seq) => {
let mut ser = serializer.serialize_struct("Sequence", 2)?;
ser.serialize_field("type", "Sequence")?;
ser.serialize_field("pretokenizers", seq)?;
ser.end()
}
PyPreTokenizerTypeWrapper::Single(inner) => inner.serialize(serializer),
}
}
}
impl<I> From<I> for PyPreTokenizerWrapper
where
I: Into<PreTokenizerWrapper>,
{
fn from(pretok: I) -> Self {
PyPreTokenizerWrapper::Wrapped(pretok.into())
}
}
impl<I> From<I> for PyPreTokenizerTypeWrapper
where
I: Into<PyPreTokenizerWrapper>,
{
fn from(pretok: I) -> Self {
PyPreTokenizerTypeWrapper::Single(Arc::new(RwLock::new(pretok.into())))
}
}
impl<I> From<I> for PyPreTokenizer
where
I: Into<PreTokenizerWrapper>,
{
fn from(pretok: I) -> Self {
PyPreTokenizer {
pretok: pretok.into().into(),
}
}
}
impl PreTokenizer for PyPreTokenizerTypeWrapper {
fn pre_tokenize(&self, pretok: &mut PreTokenizedString) -> tk::Result<()> {
match self {
PyPreTokenizerTypeWrapper::Single(inner) => inner.read().unwrap().pre_tokenize(pretok),
PyPreTokenizerTypeWrapper::Sequence(inner) => inner
.iter()
.try_for_each(|n| n.read().unwrap().pre_tokenize(pretok)),
}
}
}
impl PreTokenizer for PyPreTokenizerWrapper {
fn pre_tokenize(&self, pretok: &mut PreTokenizedString) -> tk::Result<()> {
match self {
PyPreTokenizerWrapper::Wrapped(inner) => inner.pre_tokenize(pretok),
PyPreTokenizerWrapper::Custom(inner) => inner.pre_tokenize(pretok),
}
}
}
/// PreTokenizers Module
#[pymodule]
pub fn pre_tokenizers(_py: Python, m: &PyModule) -> PyResult<()> {
m.add_class::<PyPreTokenizer>()?;
m.add_class::<PyByteLevel>()?;
m.add_class::<PyWhitespace>()?;
m.add_class::<PyWhitespaceSplit>()?;
m.add_class::<PySplit>()?;
m.add_class::<PyBertPreTokenizer>()?;
m.add_class::<PyMetaspace>()?;
m.add_class::<PyCharDelimiterSplit>()?;
m.add_class::<PyPunctuation>()?;
m.add_class::<PySequence>()?;
m.add_class::<PyDigits>()?;
m.add_class::<PyUnicodeScripts>()?;
Ok(())
}
#[cfg(test)]
mod test {
use pyo3::prelude::*;
use tk::pre_tokenizers::sequence::Sequence;
use tk::pre_tokenizers::whitespace::{Whitespace, WhitespaceSplit};
use tk::pre_tokenizers::PreTokenizerWrapper;
use crate::pre_tokenizers::{
CustomPreTokenizer, PyPreTokenizer, PyPreTokenizerTypeWrapper, PyPreTokenizerWrapper,
};
#[test]
fn get_subtype() {
Python::with_gil(|py| {
let py_norm = PyPreTokenizer::new(Whitespace {}.into());
let py_wsp = py_norm.get_as_subtype(py).unwrap();
assert_eq!("Whitespace", py_wsp.as_ref(py).get_type().name().unwrap());
})
}
#[test]
fn serialize() {
let py_wrapped: PyPreTokenizerWrapper = Whitespace {}.into();
let py_ser = serde_json::to_string(&py_wrapped).unwrap();
let rs_wrapped = PreTokenizerWrapper::Whitespace(Whitespace {});
let rs_ser = serde_json::to_string(&rs_wrapped).unwrap();
assert_eq!(py_ser, rs_ser);
let py_pretok: PyPreTokenizer = serde_json::from_str(&rs_ser).unwrap();
match py_pretok.pretok {
PyPreTokenizerTypeWrapper::Single(inner) => match *inner.as_ref().read().unwrap() {
PyPreTokenizerWrapper::Wrapped(PreTokenizerWrapper::Whitespace(_)) => {}
_ => panic!("Expected Whitespace"),
},
_ => panic!("Expected wrapped, not custom."),
}
let py_seq: PyPreTokenizerWrapper =
Sequence::new(vec![Whitespace {}.into(), WhitespaceSplit.into()]).into();
let py_wrapper_ser = serde_json::to_string(&py_seq).unwrap();
let rs_wrapped = PreTokenizerWrapper::Sequence(Sequence::new(vec![
Whitespace {}.into(),
WhitespaceSplit.into(),
]));
let rs_ser = serde_json::to_string(&rs_wrapped).unwrap();
assert_eq!(py_wrapper_ser, rs_ser);
let py_seq = PyPreTokenizer::new(py_seq.into());
let py_ser = serde_json::to_string(&py_seq).unwrap();
assert_eq!(py_wrapper_ser, py_ser);
let obj = Python::with_gil(|py| {
let py_wsp = PyPreTokenizer::new(Whitespace {}.into());
let obj: PyObject = Py::new(py, py_wsp).unwrap().into_py(py);
obj
});
let py_seq: PyPreTokenizerWrapper =
PyPreTokenizerWrapper::Custom(CustomPreTokenizer::new(obj));
assert!(serde_json::to_string(&py_seq).is_err());
}
}
| tokenizers/bindings/python/src/pre_tokenizers.rs/0 | {
"file_path": "tokenizers/bindings/python/src/pre_tokenizers.rs",
"repo_id": "tokenizers",
"token_count": 13027
} | 226 |
import pickle
import pytest
from tokenizers.models import BPE, Model, WordLevel, WordPiece
from ..utils import bert_files, data_dir, roberta_files
class TestBPE:
def test_instantiate(self, roberta_files):
assert isinstance(BPE(), Model)
assert isinstance(BPE(), BPE)
vocab = {"a": 0, "b": 1, "ab": 2}
merges = [("a", "b")]
assert isinstance(BPE(vocab, merges), Model)
assert isinstance(BPE.from_file(roberta_files["vocab"], roberta_files["merges"]), BPE)
with pytest.raises(ValueError, match="`vocab` and `merges` must be both specified"):
BPE(vocab=vocab)
with pytest.raises(ValueError, match="`vocab` and `merges` must be both specified"):
BPE(merges=merges)
assert isinstance(
pickle.loads(pickle.dumps(BPE(vocab, merges))),
BPE,
)
# Deprecated calls in 0.9
with pytest.deprecated_call():
assert isinstance(BPE(roberta_files["vocab"], roberta_files["merges"]), Model)
with pytest.raises(ValueError, match="`vocab` and `merges` must be both specified"):
BPE(vocab=roberta_files["vocab"])
with pytest.raises(ValueError, match="`vocab` and `merges` must be both specified"):
BPE(merges=roberta_files["merges"])
with pytest.deprecated_call():
assert isinstance(
pickle.loads(pickle.dumps(BPE(roberta_files["vocab"], roberta_files["merges"]))),
BPE,
)
def test_can_modify(self):
model = BPE(
dropout=0.5,
unk_token="[UNK]",
continuing_subword_prefix="__prefix__",
end_of_word_suffix="__suffix__",
fuse_unk=False,
)
assert model.dropout == 0.5
assert model.unk_token == "[UNK]"
assert model.continuing_subword_prefix == "__prefix__"
assert model.end_of_word_suffix == "__suffix__"
assert model.fuse_unk == False
assert model.byte_fallback == False
# Modify these
model.dropout = 0.1
assert pytest.approx(model.dropout) == 0.1
model.unk_token = "<unk>"
assert model.unk_token == "<unk>"
model.continuing_subword_prefix = None
assert model.continuing_subword_prefix == None
model.end_of_word_suffix = "suff"
assert model.end_of_word_suffix == "suff"
model.fuse_unk = True
assert model.fuse_unk == True
model.byte_fallback = True
assert model.byte_fallback == True
class TestWordPiece:
def test_instantiate(self, bert_files):
assert isinstance(WordPiece(), Model)
assert isinstance(WordPiece(), WordPiece)
vocab = {"a": 0, "b": 1, "ab": 2}
assert isinstance(WordPiece(vocab), Model)
assert isinstance(WordPiece(vocab), WordPiece)
assert isinstance(WordPiece.from_file(bert_files["vocab"]), WordPiece)
assert isinstance(pickle.loads(pickle.dumps(WordPiece(vocab))), WordPiece)
# Deprecated calls in 0.9
with pytest.deprecated_call():
assert isinstance(WordPiece(bert_files["vocab"]), Model)
with pytest.deprecated_call():
assert isinstance(pickle.loads(pickle.dumps(WordPiece(bert_files["vocab"]))), WordPiece)
def test_can_modify(self):
model = WordPiece(
unk_token="<oov>",
continuing_subword_prefix="__prefix__",
max_input_chars_per_word=200,
)
assert model.unk_token == "<oov>"
assert model.continuing_subword_prefix == "__prefix__"
assert model.max_input_chars_per_word == 200
# Modify these
model.unk_token = "<unk>"
assert model.unk_token == "<unk>"
model.continuing_subword_prefix = "$$$"
assert model.continuing_subword_prefix == "$$$"
model.max_input_chars_per_word = 10
assert model.max_input_chars_per_word == 10
class TestWordLevel:
def test_instantiate(self, roberta_files):
assert isinstance(WordLevel(), Model)
assert isinstance(WordLevel(), WordLevel)
vocab = {"a": 0, "b": 1, "ab": 2}
assert isinstance(WordLevel(vocab), Model)
assert isinstance(WordLevel(vocab), WordLevel)
assert isinstance(WordLevel.from_file(roberta_files["vocab"]), WordLevel)
# The WordLevel model expects a vocab.json using the same format as roberta
# so we can just try to load with this file
with pytest.deprecated_call():
assert isinstance(WordLevel(roberta_files["vocab"]), Model)
with pytest.deprecated_call():
assert isinstance(WordLevel(roberta_files["vocab"]), WordLevel)
def test_can_modify(self):
model = WordLevel(unk_token="<oov>")
assert model.unk_token == "<oov>"
# Modify these
model.unk_token = "<unk>"
assert model.unk_token == "<unk>"
| tokenizers/bindings/python/tests/bindings/test_models.py/0 | {
"file_path": "tokenizers/bindings/python/tests/bindings/test_models.py",
"repo_id": "tokenizers",
"token_count": 2253
} | 227 |
import json
import os
import unittest
import tqdm
from huggingface_hub import HfApi, cached_download, hf_hub_url
from tokenizers import Tokenizer
from .utils import albert_base, data_dir
class TestSerialization:
def test_full_serialization_albert(self, albert_base):
# Check we can read this file.
# This used to fail because of BufReader that would fail because the
# file exceeds the buffer capacity
Tokenizer.from_file(albert_base)
def check(tokenizer_file) -> bool:
with open(tokenizer_file, "r") as f:
data = json.load(f)
if "pre_tokenizer" not in data:
return True
if "type" not in data["pre_tokenizer"]:
return False
if data["pre_tokenizer"]["type"] == "Sequence":
for pre_tok in data["pre_tokenizer"]["pretokenizers"]:
if "type" not in pre_tok:
return False
return True
def slow(test_case):
"""
Decorator marking a test as slow.
Slow tests are skipped by default. Set the RUN_SLOW environment variable to a truthy value to run them.
"""
if os.getenv("RUN_SLOW") != "1":
return unittest.skip("use `RUN_SLOW=1` to run")(test_case)
else:
return test_case
@slow
class TestFullDeserialization(unittest.TestCase):
def test_full_deserialization_hub(self):
# Check we can read this file.
# This used to fail because of BufReader that would fail because the
# file exceeds the buffer capacity
not_loadable = []
invalid_pre_tokenizer = []
# models = api.list_models(filter="transformers")
# for model in tqdm.tqdm(models):
# model_id = model.modelId
# for model_file in model.siblings:
# filename = model_file.rfilename
# if filename == "tokenizer.json":
# all_models.append((model_id, filename))
all_models = [("HueyNemud/das22-10-camembert_pretrained", "tokenizer.json")]
for model_id, filename in tqdm.tqdm(all_models):
tokenizer_file = cached_download(hf_hub_url(model_id, filename=filename))
is_ok = check(tokenizer_file)
if not is_ok:
print(f"{model_id} is affected by no type")
invalid_pre_tokenizer.append(model_id)
try:
Tokenizer.from_file(tokenizer_file)
except Exception as e:
print(f"{model_id} is not loadable: {e}")
not_loadable.append(model_id)
except: # noqa: E722
print(f"{model_id} is not loadable: Rust error")
not_loadable.append(model_id)
self.assertEqual(invalid_pre_tokenizer, [])
self.assertEqual(not_loadable, [])
| tokenizers/bindings/python/tests/test_serialization.py/0 | {
"file_path": "tokenizers/bindings/python/tests/test_serialization.py",
"repo_id": "tokenizers",
"token_count": 1240
} | 228 |
# Visualizer
<tokenizerslangcontent>
<python>
## Annotation
[[autodoc]] tokenizers.tools.Annotation
## EncodingVisualizer
[[autodoc]] tokenizers.tools.EncodingVisualizer
- __call__
</python>
<rust>
The Rust API Reference is available directly on the [Docs.rs](https://docs.rs/tokenizers/latest/tokenizers/) website.
</rust>
<node>
The node API has not been documented yet.
</node>
</tokenizerslangcontent> | tokenizers/docs/source-doc-builder/api/visualizer.mdx/0 | {
"file_path": "tokenizers/docs/source-doc-builder/api/visualizer.mdx",
"repo_id": "tokenizers",
"token_count": 134
} | 229 |
# Changelog
All notable changes to this project will be documented in this file.
The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
## [0.13.2]
- Python only changes
## [0.13.1]
- [#1072] Fixing Roberta type ids.
## [0.13.0]
- [#1009] `unstable_wasm` feature to support building on Wasm (it's unstable !)
- [#1008] `Decoder` is now a composable trait, but without being backward incompatible
- [#1047, #1051, #1052] `Processor` is now a composable trait, but without being backward incompatible
Both trait changes warrant a "major" number since, despite best efforts to not break backward
compatibility, the code is different enough that we cannot be exactly sure.
## [0.12.1]
- [#938] **Reverted breaking change**. https://github.com/huggingface/transformers/issues/16520
## [0.12.0] YANKED
Bump minor version because of a breaking change.
- [#938] [REVERTED IN 0.12.1] **Breaking change**. Decoder trait is modified to be composable. This is only breaking if you are using decoders on their own. tokenizers should be error free.
- [#939] Making the regex in `ByteLevel` pre_tokenizer optional (necessary for BigScience)
- [#952] Fixed the vocabulary size of UnigramTrainer output (to respect added tokens)
- [#954] Fixed not being able to save vocabularies with holes in vocab (ConvBert). Yell warnings instead, but stop panicking.
- [#961] Added link for Ruby port of `tokenizers`
- [#960] Feature gate for `cli` and its `clap` dependency
## [0.11.3]
- [#919] Fixing single_word AddedToken. (regression from 0.11.2)
- [#916] Deserializing faster `added_tokens` by loading them in batch.
## [0.11.2]
- [#884] Fixing bad deserialization following inclusion of a default for Punctuation
## [0.11.1]
- [#882] Fixing Punctuation deserialize without argument.
- [#868] Fixing missing direction in TruncationParams
- [#860] Adding TruncationSide to TruncationParams
## [0.11.0]
### Fixed
- [#236]: Fix a bug with offsets being shifted when there are sub-sequences (Usually with
special tokens and/or added tokens in the sequence).
- [#286]: Fix various crash when training a BPE model
- [#309]: Fixed a few bugs related to additional vocabulary/tokens
- [#363]: Fix panic from unwrapping `File::open` in `count_words`
### Changed
- [#234]: Completely changed the alignement mappings available on `Encoding`. Previous mappings
were misleading and only providing offsets. New ones provide methods to easily convert between
`char` or `word` (input space) and `token` (output space)
- [#236]: `AddedToken` with special options like `rstrip` will keep the matched whitespaces
in the textual representation of the token, exposed in `tokens` on the `Encoding`. The ID stays
the same as usual. This fixes the offsets for said tokens.
- [#236]: Offsets are now converted back to the original referential before we merge the
sub-sequences together and then do the post-processing. This also fixes some offsets bugs.
- [#236]: ByteLevel PostProcessor now uses the `add_prefix_space` attribute to determine how to
trim offsets.
- Improved `TruncationError` to handle cases where provided max length is too low.
- [#249]: `encode` and `encode_batch` input has been greatly improved, and it now also accept
pre-tokenized inputs.
- Improved `TruncationError` to handle cases where provided max length is too low.
- [#276]: Improve BPE training speeds, by reading files sequentially, but parallelizing the
processing of each file
- [#280]: Use `onig` for byte-level pre-tokenization to remove all the differences with the original
implementation from GPT-2
- [#309]: Improved the management of the additional vocabulary. This introduces an option
`normalized`, controlling whether a token should be extracted from the normalized version of the
input text.
- [#330]: BertNormalizer now keeps the same behavior than the original implementation when
`strip_accents` is not specified.
- [#355]: Tokenizer does not use any dynamic dispatch anymore.
- [#377]: Use byte offsets everywhere (instead of the char offsets)
### Added
- [#236]: RobertaProcessing is now also taking care of trimming offsets, and works just as ByteLevel
on this front.
- [#272]: Serialization of the `Tokenizer` and all the parts (`PreTokenizer`, `Normalizer`, ...)
using serde. It is now easy to save/load an entire tokenizer.
- [#289]: Ability to pad to a multiple of a specified value. This is especially useful to ensure
activation of the Tensor Cores, while ensuring padding to a multiple of 8.
- [#298]: Ability to get the currently set truncation/padding params
- [#311]: Ability to enable/disable the parallelism using the `TOKENIZERS_PARALLELISM` environment
variable.
- [#403]: Add `TemplateProcessing` `PostProcessor`.
### How to migrate
- Replace any `XXX_to_YYY_offsets()` method call by any of the new ones.
- Specify the `add_prefix_space` and `trim_offsets` options on `RobertaProcessing` if you don't
want the offsets trimmed out.
- Any custom `PostProcessor` now handles offsets relative to the original string (as opposed to the
normalized one).
## [0.10.1]
### Fixed
- [#226]: Fix the word indexes when there are special tokens
## [0.10.0]
### Changed
- [#222]: All Tokenizer's subparts must now be `Send + Sync`
### Added
- [#208]: Ability to retrieve the vocabulary from the `Tokenizer` & `Model`
### Fixed
- [#205]: Trim the decoded string in `BPEDecoder`
- [b770f36]: Fix a bug with added tokens generated IDs
## [0.9.0]
### Changed
- Only one progress bar while reading files during training. This is better for use-cases with
a high number of files as it avoids having too many progress bars on screen. Also avoids reading the
size of each file before starting to actually read these files, as this process could take really
long.
- [#190]: Improved BPE and WordPiece builders
- [#193]: `encode` and `encode_batch` now take a new argument, specifying whether we should add the
special tokens
- [#197]: The `NormalizedString` has been removed from the `Encoding`. It is now possible to
retrieve it by calling `normalize` on the `Tokenizer`. This brings a reduction of 70% of the memory
footprint
- [#197]: The `NormalizedString` API has been improved. It is now possible to retrieve parts of both
strings using both "normalized" or "original" offsets
- [#197]: The offsets provided on `Encoding` are now relative to the original string, and not the
normalized one anymore
- `AddedToken` are now used for both `add_special_tokens` and `add_tokens`. Also, these AddedToken
have more options to allow various behaviors.
### Added
- [#188]: `impl PostProcessor for ByteLevel`: Handles trimming the offsets if activated. This avoids
the unintuitive inclusion of the whitespaces in the produced offsets, even if these whitespaces are
part of the actual token
- More alignment mappings on the `Encoding`.
- `post_process` can be called on the `Tokenizer`
### Fixed
- [#193]: Fix some issues with the offsets being wrong with the `ByteLevel` BPE:
- when `add_prefix_space` is activated
- [#156]: when a Unicode character gets split-up in multiple byte-level characters
- Fix a bug where offsets were wrong when there was any added tokens in the sequence being encoded.
- [#175]: Fix a bug that prevented the addition of more than a certain amount of tokens (even if not
advised, but that's not the question)
### How to migrate
- Add the `ByteLevel` `PostProcessor` to your byte-level BPE tokenizers if relevant.
## [0.8.0]
### Changed
- [#165]: Big improvements in speed for BPE (Both training and tokenization)
### Fixed
- [#163]: Do not open all files directly while training
- [#156]: There was a bug in ByteLevel PreTokenizer that caused offsets to be wrong if a char got
split up in multiple bytes
- [#174]: The `LongestFirst` truncation strategy had a bug
[#1072]: https://github.com/huggingface/tokenizers/pull/1072
[#956]: https://github.com/huggingface/tokenizers/pull/956
[#1008]: https://github.com/huggingface/tokenizers/pull/1008
[#1009]: https://github.com/huggingface/tokenizers/pull/1009
[#1047]: https://github.com/huggingface/tokenizers/pull/1047
[#1055]: https://github.com/huggingface/tokenizers/pull/1055
[#1051]: https://github.com/huggingface/tokenizers/pull/1051
[#1052]: https://github.com/huggingface/tokenizers/pull/1052
[#938]: https://github.com/huggingface/tokenizers/pull/938
[#939]: https://github.com/huggingface/tokenizers/pull/939
[#952]: https://github.com/huggingface/tokenizers/pull/952
[#954]: https://github.com/huggingface/tokenizers/pull/954
[#961]: https://github.com/huggingface/tokenizers/pull/961
[#960]: https://github.com/huggingface/tokenizers/pull/960
[#919]: https://github.com/huggingface/tokenizers/pull/919
[#916]: https://github.com/huggingface/tokenizers/pull/916
[#884]: https://github.com/huggingface/tokenizers/pull/884
[#882]: https://github.com/huggingface/tokenizers/pull/882
[#868]: https://github.com/huggingface/tokenizers/pull/868
[#860]: https://github.com/huggingface/tokenizers/pull/860
[#403]: https://github.com/huggingface/tokenizers/pull/403
[#377]: https://github.com/huggingface/tokenizers/pull/377
[#355]: https://github.com/huggingface/tokenizers/pull/355
[#363]: https://github.com/huggingface/tokenizers/pull/363
[#330]: https://github.com/huggingface/tokenizers/pull/330
[#311]: https://github.com/huggingface/tokenizers/pull/311
[#309]: https://github.com/huggingface/tokenizers/pull/309
[#298]: https://github.com/huggingface/tokenizers/pull/298
[#289]: https://github.com/huggingface/tokenizers/pull/289
[#286]: https://github.com/huggingface/tokenizers/pull/286
[#280]: https://github.com/huggingface/tokenizers/pull/280
[#276]: https://github.com/huggingface/tokenizers/pull/276
[#272]: https://github.com/huggingface/tokenizers/pull/272
[#249]: https://github.com/huggingface/tokenizers/pull/249
[b770f36]: https://github.com/huggingface/tokenizers/commit/b770f364280af33efeffea8f0003102cda8cf1b7
[#236]: https://github.com/huggingface/tokenizers/pull/236
[#234]: https://github.com/huggingface/tokenizers/pull/234
[#226]: https://github.com/huggingface/tokenizers/pull/226
[#222]: https://github.com/huggingface/tokenizers/pull/222
[#208]: https://github.com/huggingface/tokenizers/pull/208
[#205]: https://github.com/huggingface/tokenizers/issues/205
[#197]: https://github.com/huggingface/tokenizers/pull/197
[#193]: https://github.com/huggingface/tokenizers/pull/193
[#190]: https://github.com/huggingface/tokenizers/pull/190
[#188]: https://github.com/huggingface/tokenizers/pull/188
[#175]: https://github.com/huggingface/tokenizers/issues/175
[#174]: https://github.com/huggingface/tokenizers/issues/174
[#165]: https://github.com/huggingface/tokenizers/pull/165
[#163]: https://github.com/huggingface/tokenizers/issues/163
[#156]: https://github.com/huggingface/tokenizers/pull/156
| tokenizers/tokenizers/CHANGELOG.md/0 | {
"file_path": "tokenizers/tokenizers/CHANGELOG.md",
"repo_id": "tokenizers",
"token_count": 3388
} | 230 |
pub fn set_panic_hook() {
// When the `console_error_panic_hook` feature is enabled, we can call the
// `set_panic_hook` function at least once during initialization, and then
// we will get better error messages if our code ever panics.
//
// For more details see
// https://github.com/rustwasm/console_error_panic_hook#readme
#[cfg(feature = "console_error_panic_hook")]
console_error_panic_hook::set_once();
}
| tokenizers/tokenizers/examples/unstable_wasm/src/utils.rs/0 | {
"file_path": "tokenizers/tokenizers/examples/unstable_wasm/src/utils.rs",
"repo_id": "tokenizers",
"token_count": 150
} | 231 |
use crate::tokenizer::{Decoder, Result};
use monostate::MustBe;
use serde::{Deserialize, Serialize};
#[derive(Deserialize, Clone, Debug, Serialize, Default)]
/// ByteFallback is a simple trick which converts tokens looking like `<0x61>`
/// to pure bytes, and attempts to make them into a string. If the tokens
/// cannot be decoded you will get � instead for each inconvertable byte token
#[non_exhaustive]
pub struct ByteFallback {
#[serde(rename = "type")]
type_: MustBe!("ByteFallback"),
}
impl ByteFallback {
pub fn new() -> Self {
Self {
type_: MustBe!("ByteFallback"),
}
}
}
impl Decoder for ByteFallback {
fn decode_chain(&self, tokens: Vec<String>) -> Result<Vec<String>> {
let mut new_tokens: Vec<String> = vec![];
let mut previous_byte_tokens: Vec<u8> = vec![];
for token in tokens {
let bytes = if token.len() == 6 && token.starts_with("<0x") && token.ends_with('>') {
if let Ok(byte) = u8::from_str_radix(&token[3..5], 16) {
Some(byte)
} else {
None
}
} else {
None
};
if let Some(bytes) = bytes {
previous_byte_tokens.push(bytes);
} else {
if !previous_byte_tokens.is_empty() {
if let Ok(string) = String::from_utf8(previous_byte_tokens.clone()) {
new_tokens.push(string);
} else {
for _ in 0..previous_byte_tokens.len() {
new_tokens.push("�".into());
}
}
previous_byte_tokens.clear();
}
new_tokens.push(token);
}
}
if !previous_byte_tokens.is_empty() {
if let Ok(string) = String::from_utf8(previous_byte_tokens.clone()) {
new_tokens.push(string);
} else {
for _ in 0..previous_byte_tokens.len() {
new_tokens.push("�".into());
}
}
}
Ok(new_tokens)
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn decode() {
let decoder = ByteFallback::new();
let res = decoder
.decode_chain(vec!["Hey".into(), "friend!".into()])
.unwrap();
assert_eq!(res, vec!["Hey", "friend!"]);
let res = decoder.decode_chain(vec!["<0x61>".into()]).unwrap();
assert_eq!(res, vec!["a"]);
let res = decoder.decode_chain(vec!["<0xE5>".into()]).unwrap();
assert_eq!(res, vec!["�"]);
let res = decoder
.decode_chain(vec!["<0xE5>".into(), "<0x8f>".into()])
.unwrap();
assert_eq!(res, vec!["�", "�"]);
// 叫
let res = decoder
.decode_chain(vec!["<0xE5>".into(), "<0x8f>".into(), "<0xab>".into()])
.unwrap();
assert_eq!(res, vec!["叫"]);
let res = decoder
.decode_chain(vec![
"<0xE5>".into(),
"<0x8f>".into(),
"<0xab>".into(),
"a".into(),
])
.unwrap();
assert_eq!(res, vec!["叫", "a"]);
let res = decoder
.decode_chain(vec!["<0xE5>".into(), "<0x8f>".into(), "a".into()])
.unwrap();
assert_eq!(res, vec!["�", "�", "a"]);
}
}
| tokenizers/tokenizers/src/decoders/byte_fallback.rs/0 | {
"file_path": "tokenizers/tokenizers/src/decoders/byte_fallback.rs",
"repo_id": "tokenizers",
"token_count": 1938
} | 232 |
use super::{
lattice::Lattice,
trainer::UnigramTrainer,
trie::{Trie, TrieBuilder},
};
use crate::tokenizer::{Model, Result, Token};
use crate::utils::cache::Cache;
use std::collections::HashMap;
use std::convert::TryInto;
use std::fs::read_to_string;
use std::path::{Path, PathBuf};
type TokenMap = HashMap<String, u32>;
type Vocab = Vec<(String, f64)>;
/// A `Unigram` model to encode sentences.
pub struct Unigram {
token_to_ids: TokenMap,
pub(crate) vocab: Vocab,
cache: Cache<String, Vec<String>>,
trie: Trie<u8>,
pub min_score: f64,
pub(super) unk_id: Option<usize>,
pub(super) bos_id: usize,
pub(super) eos_id: usize,
fuse_unk: bool,
is_optimized: bool,
byte_fallback: bool,
}
impl PartialEq for Unigram {
fn eq(&self, other: &Self) -> bool {
self.unk_id == other.unk_id && self.vocab == other.vocab
}
}
impl Clone for Unigram {
// `Clone` can't be derive because it's not implemented for `Cache`.
// To keep things simple when we clone, the new Unigram will start with a fresh cache.
fn clone(&self) -> Self {
let fresh_cache = self.cache.fresh();
Self {
vocab: self.vocab.clone(),
cache: fresh_cache,
token_to_ids: self.token_to_ids.clone(),
trie: self.trie.clone(),
min_score: self.min_score,
unk_id: self.unk_id,
bos_id: self.bos_id,
eos_id: self.eos_id,
fuse_unk: self.fuse_unk,
is_optimized: self.is_optimized,
byte_fallback: self.byte_fallback,
}
}
}
impl std::fmt::Debug for Unigram {
fn fmt(&self, fmt: &mut std::fmt::Formatter) -> std::fmt::Result {
fmt.debug_struct("Unigram")
.field("vocab", &self.vocab.len())
.field("unk_id", &self.unk_id)
.field("byte_fallback", &self.byte_fallback)
.finish()
}
}
static K_UNK_PENALTY: f64 = 10.0;
#[derive(thiserror::Error, Debug)]
pub enum UnigramError {
#[error("The vocabulary is empty but at least <unk> is needed")]
EmptyVocabulary,
#[error("The `unk_id` is larger than vocabulary size")]
UnkIdNotInVocabulary,
#[error("Encountered an unknown token but `unk_id` is missing")]
MissingUnkId,
}
impl Default for Unigram {
fn default() -> Self {
let vocab = vec![("<unk>".to_string(), 0.0)];
Self::from(vocab, Some(0), false).unwrap()
}
}
impl Unigram {
/// Create a `Unigram` model from a given vocabulary.
/// Vocabulary are the various tokens and their associated score which is a sort of a logprob of
/// their frequency, which will enable tokenization and sampling.
/// unk_id, is the index within the vocabulary.
/// For now `Unigram` *requires* at least `unk` because we might find a never seen char.
/// Further versions might allow that part to be hidden.
pub fn from(
vocab: Vec<(String, f64)>,
unk_id: Option<usize>,
byte_fallback: bool,
) -> Result<Self> {
let n = vocab.len();
let mut token_to_ids: TokenMap = HashMap::new();
let mut builder = TrieBuilder::default();
if let Some(unk_id) = unk_id {
if vocab.is_empty() {
return Err(Box::new(UnigramError::EmptyVocabulary));
}
if unk_id >= vocab.len() {
return Err(Box::new(UnigramError::UnkIdNotInVocabulary));
}
}
let bos_id = n + 1;
let eos_id = n + 2;
let mut min_score = f64::INFINITY;
for (id, (token, score)) in vocab.iter().enumerate() {
token_to_ids.insert(token.to_string(), id as u32);
let bytes: Vec<u8> = token.bytes().collect();
builder.push(&bytes);
if score < &min_score {
min_score = *score;
}
}
let trie = builder.build();
let fuse_unk = true;
let is_optimized = true;
Ok(Self {
vocab,
token_to_ids,
trie,
min_score,
bos_id,
eos_id,
unk_id,
fuse_unk,
cache: Cache::default(),
is_optimized,
byte_fallback,
})
}
#[cfg(test)]
pub(super) fn set_fuse_unk(&mut self, fuse_unk: bool) {
self.fuse_unk = fuse_unk;
self.cache = self.cache.fresh();
}
#[cfg(test)]
pub(super) fn set_optimized(&mut self, is_optimized: bool) {
self.is_optimized = is_optimized;
}
pub fn byte_fallback(&self) -> bool {
self.byte_fallback
}
pub(super) fn len(&self) -> usize {
self.vocab.len()
}
pub(super) fn populate_nodes(&self, lattice: &mut Lattice) {
let unk_score = self.min_score - K_UNK_PENALTY;
let len = lattice.len();
let mut begin_pos = 0;
while begin_pos < len {
let mblen = lattice.sentence[begin_pos..]
.chars()
.next()
.unwrap()
.len_utf8();
let mut has_single_node = false;
for bytes in self
.trie
.common_prefix_search(lattice.sentence.bytes().skip(begin_pos))
{
let n = bytes.len();
let tok = String::from_utf8(bytes).unwrap();
let id = *self.token_to_ids.get(&tok).unwrap();
let item = &self.vocab[id as usize];
assert_eq!(item.0, tok);
let score: f64 = item.1;
lattice.insert(begin_pos, n, score, id.try_into().unwrap());
if !has_single_node && n == mblen {
has_single_node = true;
}
}
if !has_single_node {
if let Some(unk_id) = self.unk_id {
lattice.insert(begin_pos, mblen, unk_score, unk_id);
}
}
begin_pos += mblen
}
}
/// This functions take a String, and will encode it in a Vec of Strings,
/// of the best tokenization available to the current model.
/// ```
/// use tokenizers::models::unigram::Unigram;
///
/// let pieces = vec![
/// ("<unk>".to_string(), 0.0),
/// ("a".to_string(), 0.0),
/// ("b".to_string(), 0.0),
/// ("c".to_string(), 0.0),
/// ("d".to_string(), 0.0),
/// ("cd".to_string(), 1.0),
/// ("ab".to_string(), 2.0),
/// ("abc".to_string(), 5.0),
/// ("abcd".to_string(), 10.0),
/// ];
/// let model = Unigram::from(pieces, Some(0), false).unwrap();
/// let result = model.encode("abcdacdxx").unwrap();
/// assert_eq!(result, vec!["abcd", "a", "cd", "xx"]);
/// ```
pub fn encode(&self, sentence: &str) -> Result<Vec<String>> {
if sentence.is_empty() {
return Ok(vec![]);
}
if let Some(result) = self.cache.get(sentence) {
Ok(result.to_vec())
} else {
let result = if self.is_optimized {
self.encode_optimized(sentence)?
} else {
self.encode_unoptimized(sentence)?
};
self.cache.set(sentence.to_owned(), result.clone());
Ok(result)
}
}
fn encode_optimized(&self, sentence: &str) -> Result<Vec<String>> {
// https://github.com/google/sentencepiece/blob/d48247191a6d50e469ed1a4a36e877befffd1851/src/unigram_model.cc#L600
#[derive(Debug, Clone)]
struct BestPathNode {
/// The vocab id. (maybe UNK)
id: usize,
/// The total score of the best path ending at this node.
best_path_score: f64,
/// The starting position (in utf-8) of this node. The entire best
/// path can be constructed by backtracking along this link.
starts_at: Option<usize>,
}
impl Default for BestPathNode {
fn default() -> Self {
Self {
id: 0,
best_path_score: 0.0,
starts_at: None,
}
}
}
let size = sentence.len();
let unk_score = self.min_score - K_UNK_PENALTY;
let mut best_path_ends_at = vec![BestPathNode::default(); size + 1];
let mut starts_at = 0;
while starts_at < size {
let best_path_score_till_here = best_path_ends_at[starts_at].best_path_score;
let mut has_single_node = false;
let mblen = sentence[starts_at..].chars().next().unwrap().len_utf8();
for tok_bytes in self
.trie
.common_prefix_search(sentence.bytes().skip(starts_at))
{
let key_pos = starts_at + tok_bytes.len();
let token: String = String::from_utf8(tok_bytes).unwrap();
let target_node = &mut best_path_ends_at[key_pos];
let length = key_pos - starts_at;
let id = self.token_to_ids.get(&token).unwrap();
let score = self.vocab.get(*id as usize).unwrap().1;
let candidate_best_path_score = score + best_path_score_till_here;
if target_node.starts_at.is_none()
|| candidate_best_path_score > target_node.best_path_score
{
target_node.best_path_score = candidate_best_path_score;
target_node.starts_at = Some(starts_at);
target_node.id = *id as usize;
}
if !has_single_node && length == mblen {
has_single_node = true;
}
}
if !has_single_node {
let target_node = &mut best_path_ends_at[starts_at + mblen];
let candidate_best_path_score = unk_score + best_path_score_till_here;
if target_node.starts_at.is_none()
|| candidate_best_path_score > target_node.best_path_score
{
target_node.best_path_score = candidate_best_path_score;
target_node.starts_at = Some(starts_at);
target_node.id = self.unk_id.ok_or(UnigramError::MissingUnkId)?;
}
}
starts_at += mblen
}
let mut ends_at = size;
let mut results: Vec<String> = vec![];
let mut token = vec![];
while ends_at > 0 {
let node = &best_path_ends_at[ends_at];
let starts_at = node.starts_at.unwrap();
if self.fuse_unk
&& self.unk_id.is_some()
&& node.id == self.unk_id.ok_or(UnigramError::MissingUnkId)?
{
token.push(
String::from_utf8(sentence[starts_at..ends_at].as_bytes().to_vec()).unwrap(),
);
} else {
if !token.is_empty() {
token.reverse();
results.push(token.concat());
token = vec![];
}
results.push(
String::from_utf8(sentence[starts_at..ends_at].as_bytes().to_vec()).unwrap(),
);
}
ends_at = starts_at;
}
if !token.is_empty() {
token.reverse();
results.push(token.concat());
}
results.reverse();
Ok(results)
}
fn encode_unoptimized(&self, sentence: &str) -> Result<Vec<String>> {
let mut lattice = Lattice::from(sentence, self.bos_id, self.eos_id);
self.populate_nodes(&mut lattice);
if self.fuse_unk {
let mut results = vec![];
let mut token = String::new();
for node in lattice.viterbi().iter() {
let item = lattice.piece(&node.borrow());
if node.borrow().id == self.unk_id.ok_or(UnigramError::MissingUnkId)? {
token.push_str(&item);
} else {
if !token.is_empty() {
results.push(token);
token = String::new();
}
results.push(item.to_string());
}
}
if !token.is_empty() {
results.push(token);
}
Ok(results)
} else {
Ok(lattice.tokens())
}
}
/// Iterate of vocabulary of the model as a pair of `(token, score)`.
pub fn iter(&self) -> UnigramIterator {
UnigramIterator { model: self, i: 0 }
}
/// Loads a SentencePiece output model after being trained by tokenizers.
/// After that you can use the model with tokenizers library.
/// ```no_run
/// use tokenizers::models::unigram::Unigram;
/// use std::path::Path;
///
/// let model = Unigram::load("mymodel-unigram.json").unwrap();
/// ```
pub fn load<P: AsRef<Path>>(path: P) -> Result<Unigram> {
let string = read_to_string(path)?;
Ok(serde_json::from_str(&string)?)
}
}
/// Iterator to iterate of vocabulary of the model, and their relative score.
pub struct UnigramIterator<'a> {
model: &'a Unigram,
i: usize,
}
impl<'a> Iterator for UnigramIterator<'a> {
type Item = &'a (String, f64);
fn next(&mut self) -> Option<Self::Item> {
let i = self.i;
if i < self.model.len() {
let r = Some(&self.model.vocab[i]);
self.i += 1;
r
} else {
None
}
}
}
impl Model for Unigram {
type Trainer = UnigramTrainer;
fn get_vocab(&self) -> HashMap<String, u32> {
self.token_to_ids.clone()
}
fn get_vocab_size(&self) -> usize {
self.vocab.len()
}
fn tokenize(&self, sentence: &str) -> Result<Vec<Token>> {
let str_tokens = self.encode(sentence)?;
let mut offset = 0;
let mut tokens = Vec::with_capacity(str_tokens.len());
for string in str_tokens {
let len = string.len();
let offsets = (offset, offset + len);
let id: u32 = match self.token_to_ids.get(&string) {
Some(id) => *id,
None => {
if self.byte_fallback {
let byte_tokens: Option<Vec<_>> = string
.bytes()
.map(|byte| -> Option<Token> {
let byte_string = format!("<0x{:02X}>", byte);
let id = self.token_to_ids.get(&byte_string);
id.map(|id| Token::new(*id, byte_string, (offset, offset + len)))
})
.collect();
if let Some(byte_tokens) = byte_tokens {
for token in byte_tokens {
tokens.push(token);
}
offset += len;
continue;
}
}
self.unk_id.ok_or(UnigramError::MissingUnkId)? as u32
}
};
offset += len;
tokens.push(Token::new(id, string, offsets));
}
Ok(tokens)
}
fn token_to_id(&self, token: &str) -> Option<u32> {
self.token_to_ids.get(token).copied()
}
fn id_to_token(&self, id: u32) -> Option<String> {
self.vocab.get(id as usize).map(|item| item.0.clone())
}
fn save(&self, folder: &Path, name: Option<&str>) -> Result<Vec<PathBuf>> {
let name = match name {
Some(name) => format!("{}-unigram.json", name),
None => "unigram.json".to_string(),
};
let mut fullpath = PathBuf::new();
fullpath.push(folder);
fullpath.push(name);
let string = serde_json::to_string_pretty(self)?;
std::fs::write(&fullpath, string)?;
Ok(vec![fullpath])
}
fn get_trainer(&self) -> Self::Trainer {
UnigramTrainer::default()
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_populate_nodes_unk() {
let pieces = vec![("<unk>".to_string(), 0.0)];
let model = Unigram::from(pieces, Some(0), false).unwrap();
let mut lattice = Lattice::from("abc", model.bos_id, model.eos_id);
model.populate_nodes(&mut lattice);
assert_eq!(lattice.begin_nodes[0].len(), 1);
assert_eq!(lattice.begin_nodes[1].len(), 1);
assert_eq!(lattice.begin_nodes[2].len(), 1);
assert_eq!(lattice.begin_nodes[0][0].borrow().id, 0);
assert_eq!(lattice.begin_nodes[1][0].borrow().id, 0);
assert_eq!(lattice.begin_nodes[2][0].borrow().id, 0);
assert_eq!(lattice.begin_nodes[0][0].borrow().node_id, 2);
assert_eq!(lattice.begin_nodes[1][0].borrow().node_id, 3);
assert_eq!(lattice.begin_nodes[2][0].borrow().node_id, 4);
}
#[test]
fn test_populate_nodes() {
let pieces = vec![
("<unk>".to_string(), 0.0),
("a".to_string(), 0.1),
("b".to_string(), 0.2),
("ab".to_string(), 0.3),
("bc".to_string(), 0.4),
];
let model = Unigram::from(pieces, Some(0), false).unwrap();
let mut lattice = Lattice::from("abc", model.bos_id, model.eos_id);
model.populate_nodes(&mut lattice);
assert_eq!(lattice.begin_nodes[0].len(), 2); // a, ab
assert_eq!(lattice.begin_nodes[1].len(), 2); // b, bc
assert_eq!(lattice.begin_nodes[2].len(), 1); // c(unk)
// Id is the vocabulary id from Unigram model
// node_id is simply the rank of the given node in the lattice.
assert_eq!(lattice.begin_nodes[0][0].borrow().id, 1);
assert_eq!(lattice.begin_nodes[0][1].borrow().id, 3);
assert_eq!(lattice.begin_nodes[1][0].borrow().id, 2);
assert_eq!(lattice.begin_nodes[1][1].borrow().id, 4);
assert_eq!(lattice.begin_nodes[2][0].borrow().id, 0);
assert_eq!(lattice.begin_nodes[0][0].borrow().node_id, 2);
assert_eq!(lattice.begin_nodes[0][1].borrow().node_id, 3);
assert_eq!(lattice.begin_nodes[1][0].borrow().node_id, 4);
assert_eq!(lattice.begin_nodes[1][1].borrow().node_id, 5);
assert_eq!(lattice.begin_nodes[2][0].borrow().node_id, 6);
}
#[test]
fn test_encode() {
let sentencepieces = vec![
("<unk>".to_string(), 0.0),
("a".to_string(), 0.0),
("b".to_string(), 0.0),
("c".to_string(), 0.0),
("d".to_string(), 0.0),
("cd".to_string(), 1.0),
("ab".to_string(), 2.0),
("abc".to_string(), 5.0),
("abcd".to_string(), 10.0),
];
let model = Unigram::from(sentencepieces, Some(0), false).unwrap();
let result = model.encode("abcd").unwrap();
assert_eq!(result, vec!["abcd"]);
}
#[test]
fn test_encode2() {
let sentencepieces = vec![
("<unk>".to_string(), 0.0),
("ab".to_string(), 0.0),
("cd".to_string(), -0.1),
("abc".to_string(), -0.2),
("a".to_string(), -0.3),
("b".to_string(), -0.4),
("c".to_string(), -0.5),
("ABC".to_string(), -0.5),
("abcdabcd".to_string(), 20.0), // User defined just max the scores.
("q".to_string(), 20.5),
("r".to_string(), 20.5),
("qr".to_string(), -0.5),
];
let mut model = Unigram::from(sentencepieces, Some(0), false).unwrap();
for is_optimized in &[true, false] {
model.set_optimized(*is_optimized);
println!("IsOptimized {:?}", is_optimized);
assert_eq!(model.encode("abc").unwrap(), vec!["abc"]);
assert_eq!(model.encode("AB").unwrap(), vec!["AB"]);
model.set_fuse_unk(false);
assert_eq!(model.encode("AB").unwrap(), vec!["A", "B"]);
model.set_fuse_unk(true);
assert_eq!(model.encode("AB").unwrap(), vec!["AB"]);
assert_eq!(model.encode("abcd").unwrap(), vec!["ab", "cd"]);
assert_eq!(model.encode("abcc").unwrap(), vec!["abc", "c"]);
assert_eq!(
model.encode("xabcabaabcdd").unwrap(),
vec!["x", "abc", "ab", "a", "ab", "cd", "d"]
);
model.set_fuse_unk(false);
assert_eq!(
model.encode("xyz東京").unwrap(),
vec!["x", "y", "z", "東", "京"]
);
model.set_fuse_unk(true);
assert_eq!(model.encode("xyz東京").unwrap(), vec!["xyz東京"]);
// User encoded in original version
assert_eq!(model.encode("ABC").unwrap(), vec!["ABC"]);
assert_eq!(model.encode("abABCcd").unwrap(), vec!["ab", "ABC", "cd"]);
assert_eq!(
model.encode("ababcdabcdcd").unwrap(),
vec!["ab", "abcdabcd", "cd"]
);
assert_eq!(model.encode("abqrcd").unwrap(), vec!["ab", "q", "r", "cd"]);
}
}
#[test]
fn test_unigram_bytefallback() {
// In [97]: processor.encode_as_pieces("⅐⅛⅑ ")
// Out[97]: ['▁', '<0xE2>', '<0x85>', '<0x90>', '⅛', '<0xE2>', '<0x85>', '<0x91>', '▁']
let sentencepieces = vec![
("<unk>".to_string(), 0.0),
("<0xC3>".to_string(), -0.01),
("<0xA9>".to_string(), -0.03),
];
let unigram = Unigram::from(sentencepieces, Some(0), true).unwrap();
let tokens: Vec<Token> = unigram.tokenize("é").unwrap();
assert_eq!(
tokens,
[
Token {
id: 1,
value: "<0xC3>".to_string(),
offsets: (0, 2)
},
Token {
id: 2,
value: "<0xA9>".to_string(),
offsets: (0, 2)
}
]
);
let tokens = unigram.tokenize("?é").unwrap();
assert_eq!(tokens[0].id, 0);
}
}
| tokenizers/tokenizers/src/models/unigram/model.rs/0 | {
"file_path": "tokenizers/tokenizers/src/models/unigram/model.rs",
"repo_id": "tokenizers",
"token_count": 11900
} | 233 |
use crate::tokenizer::{NormalizedString, Normalizer, Result};
use crate::utils::macro_rules_attribute;
#[derive(Default, Copy, Clone, Debug)]
#[macro_rules_attribute(impl_serde_type!)]
pub struct NFD;
impl Normalizer for NFD {
fn normalize(&self, normalized: &mut NormalizedString) -> Result<()> {
normalized.nfd();
Ok(())
}
}
#[derive(Default, Copy, Clone, Debug)]
#[macro_rules_attribute(impl_serde_type!)]
pub struct NFKD;
impl Normalizer for NFKD {
fn normalize(&self, normalized: &mut NormalizedString) -> Result<()> {
normalized.nfkd();
Ok(())
}
}
#[derive(Default, Copy, Clone, Debug)]
#[macro_rules_attribute(impl_serde_type!)]
pub struct NFC;
impl Normalizer for NFC {
fn normalize(&self, normalized: &mut NormalizedString) -> Result<()> {
normalized.nfc();
Ok(())
}
}
#[derive(Default, Copy, Clone, Debug)]
#[macro_rules_attribute(impl_serde_type!)]
pub struct NFKC;
impl Normalizer for NFKC {
fn normalize(&self, normalized: &mut NormalizedString) -> Result<()> {
normalized.nfkc();
Ok(())
}
}
fn do_nmt(normalized: &mut NormalizedString) {
// Ascii Control characters
normalized
.filter(|c| {
!matches!(
c as u32,
0x0001..=0x0008 |
0x000B |
0x000E..=0x001F |
0x007F |
0x008F |
0x009F
)
})
// Other code points considered as whitespace.
.map(|c| match c as u32 {
0x0009 => ' ',
0x000A => ' ',
0x000C => ' ',
0x000D => ' ',
0x1680 => ' ',
0x200B..=0x200F => ' ',
0x2028 => ' ',
0x2029 => ' ',
0x2581 => ' ',
0xFEFF => ' ',
0xFFFD => ' ',
_ => c,
});
}
#[derive(Default, Copy, Clone, Debug)]
#[macro_rules_attribute(impl_serde_type!)]
pub struct Nmt;
impl Normalizer for Nmt {
fn normalize(&self, normalized: &mut NormalizedString) -> Result<()> {
do_nmt(normalized);
Ok(())
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_nfkc() {
let original = "\u{fb01}".to_string();
let normalized = "fi".to_string();
let mut n = NormalizedString::from(original.clone());
NFKC.normalize(&mut n).unwrap();
assert_eq!(
n,
NormalizedString::new(original, normalized, vec![(0, 3), (0, 3)], 0)
);
assert_eq!(n.alignments_original(), vec![(0, 2), (0, 2), (0, 2)]);
}
}
| tokenizers/tokenizers/src/normalizers/unicode.rs/0 | {
"file_path": "tokenizers/tokenizers/src/normalizers/unicode.rs",
"repo_id": "tokenizers",
"token_count": 1317
} | 234 |
pub mod bert;
pub mod roberta;
pub mod sequence;
pub mod template;
// Re-export these as processors
pub use super::pre_tokenizers::byte_level;
use serde::{Deserialize, Serialize};
use crate::pre_tokenizers::byte_level::ByteLevel;
use crate::processors::bert::BertProcessing;
use crate::processors::roberta::RobertaProcessing;
use crate::processors::sequence::Sequence;
use crate::processors::template::TemplateProcessing;
use crate::{Encoding, PostProcessor, Result};
#[derive(Serialize, Deserialize, PartialEq, Debug, Clone, Eq)]
#[serde(untagged)]
pub enum PostProcessorWrapper {
// Roberta must be before Bert for deserialization (serde does not validate tags)
Roberta(RobertaProcessing),
Bert(BertProcessing),
ByteLevel(ByteLevel),
Template(TemplateProcessing),
Sequence(Sequence),
}
impl PostProcessor for PostProcessorWrapper {
fn added_tokens(&self, is_pair: bool) -> usize {
match self {
Self::Bert(bert) => bert.added_tokens(is_pair),
Self::ByteLevel(bl) => bl.added_tokens(is_pair),
Self::Roberta(roberta) => roberta.added_tokens(is_pair),
Self::Template(template) => template.added_tokens(is_pair),
Self::Sequence(bl) => bl.added_tokens(is_pair),
}
}
fn process_encodings(
&self,
encodings: Vec<Encoding>,
add_special_tokens: bool,
) -> Result<Vec<Encoding>> {
match self {
Self::Bert(bert) => bert.process_encodings(encodings, add_special_tokens),
Self::ByteLevel(bl) => bl.process_encodings(encodings, add_special_tokens),
Self::Roberta(roberta) => roberta.process_encodings(encodings, add_special_tokens),
Self::Template(template) => template.process_encodings(encodings, add_special_tokens),
Self::Sequence(bl) => bl.process_encodings(encodings, add_special_tokens),
}
}
}
impl_enum_from!(BertProcessing, PostProcessorWrapper, Bert);
impl_enum_from!(ByteLevel, PostProcessorWrapper, ByteLevel);
impl_enum_from!(RobertaProcessing, PostProcessorWrapper, Roberta);
impl_enum_from!(TemplateProcessing, PostProcessorWrapper, Template);
impl_enum_from!(Sequence, PostProcessorWrapper, Sequence);
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn deserialize_bert_roberta_correctly() {
let roberta = RobertaProcessing::default();
let roberta_r = r#"{
"type":"RobertaProcessing",
"sep":["</s>",2],
"cls":["<s>",0],
"trim_offsets":true,
"add_prefix_space":true
}"#
.replace(char::is_whitespace, "");
assert_eq!(serde_json::to_string(&roberta).unwrap(), roberta_r);
assert_eq!(
serde_json::from_str::<PostProcessorWrapper>(&roberta_r).unwrap(),
PostProcessorWrapper::Roberta(roberta)
);
let bert = BertProcessing::default();
let bert_r = r#"{"type":"BertProcessing","sep":["[SEP]",102],"cls":["[CLS]",101]}"#;
assert_eq!(serde_json::to_string(&bert).unwrap(), bert_r);
assert_eq!(
serde_json::from_str::<PostProcessorWrapper>(bert_r).unwrap(),
PostProcessorWrapper::Bert(bert)
);
}
}
| tokenizers/tokenizers/src/processors/mod.rs/0 | {
"file_path": "tokenizers/tokenizers/src/processors/mod.rs",
"repo_id": "tokenizers",
"token_count": 1426
} | 235 |
use crate::tokenizer::pattern::Pattern;
use crate::{Offsets, Result};
use onig::Regex;
use std::error::Error;
#[derive(Debug)]
pub struct SysRegex {
regex: Regex,
}
impl SysRegex {
pub fn find_iter<'r, 't>(&'r self, inside: &'t str) -> onig::FindMatches<'r, 't> {
self.regex.find_iter(inside)
}
pub fn new(
regex_str: &str,
) -> std::result::Result<Self, Box<dyn Error + Send + Sync + 'static>> {
Ok(Self {
regex: Regex::new(regex_str)?,
})
}
}
impl Pattern for &Regex {
fn find_matches(&self, inside: &str) -> Result<Vec<(Offsets, bool)>> {
if inside.is_empty() {
return Ok(vec![((0, 0), false)]);
}
let mut prev = 0;
let mut splits = Vec::with_capacity(inside.len());
for (start, end) in self.find_iter(inside) {
if prev != start {
splits.push(((prev, start), false));
}
splits.push(((start, end), true));
prev = end;
}
if prev != inside.len() {
splits.push(((prev, inside.len()), false))
}
Ok(splits)
}
}
| tokenizers/tokenizers/src/utils/onig.rs/0 | {
"file_path": "tokenizers/tokenizers/src/utils/onig.rs",
"repo_id": "tokenizers",
"token_count": 571
} | 236 |
[run]
source=transformers
omit =
# skip convertion scripts from testing for now
*/convert_*
*/__main__.py
[report]
exclude_lines =
pragma: no cover
raise
except
register_parameter | transformers/.coveragerc/0 | {
"file_path": "transformers/.coveragerc",
"repo_id": "transformers",
"token_count": 81
} | 237 |
FROM nvidia/cuda:12.1.0-cudnn8-devel-ubuntu20.04
LABEL maintainer="Hugging Face"
ARG DEBIAN_FRONTEND=noninteractive
RUN apt update
RUN apt install -y git libsndfile1-dev tesseract-ocr espeak-ng python3 python3-pip ffmpeg
RUN python3 -m pip install --no-cache-dir --upgrade pip
ARG REF=main
RUN git clone https://github.com/huggingface/transformers && cd transformers && git checkout $REF
# If set to nothing, will install the latest version
ARG PYTORCH='2.1.1'
ARG TORCH_VISION=''
ARG TORCH_AUDIO=''
# Example: `cu102`, `cu113`, etc.
ARG CUDA='cu121'
RUN [ ${#PYTORCH} -gt 0 ] && VERSION='torch=='$PYTORCH'.*' || VERSION='torch'; python3 -m pip install --no-cache-dir -U $VERSION --extra-index-url https://download.pytorch.org/whl/$CUDA
RUN [ ${#TORCH_VISION} -gt 0 ] && VERSION='torchvision=='TORCH_VISION'.*' || VERSION='torchvision'; python3 -m pip install --no-cache-dir -U $VERSION --extra-index-url https://download.pytorch.org/whl/$CUDA
RUN [ ${#TORCH_AUDIO} -gt 0 ] && VERSION='torchaudio=='TORCH_AUDIO'.*' || VERSION='torchaudio'; python3 -m pip install --no-cache-dir -U $VERSION --extra-index-url https://download.pytorch.org/whl/$CUDA
RUN python3 -m pip install --no-cache-dir -e ./transformers[dev-torch,testing,video]
RUN python3 -m pip uninstall -y tensorflow flax
RUN python3 -m pip install --no-cache-dir git+https://github.com/facebookresearch/detectron2.git pytesseract
RUN python3 -m pip install -U "itsdangerous<2.1.0"
# When installing in editable mode, `transformers` is not recognized as a package.
# this line must be added in order for python to be aware of transformers.
RUN cd transformers && python3 setup.py develop
| transformers/docker/transformers-pytorch-gpu/Dockerfile/0 | {
"file_path": "transformers/docker/transformers-pytorch-gpu/Dockerfile",
"repo_id": "transformers",
"token_count": 611
} | 238 |
<!--Copyright 2022 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Vortrainierte Instanzen mit einer AutoClass laden
Bei so vielen verschiedenen Transformator-Architekturen kann es eine Herausforderung sein, eine für Ihren Checkpoint zu erstellen. Als Teil der 🤗 Transformers Kernphilosophie, die Bibliothek leicht, einfach und flexibel nutzbar zu machen, leitet eine `AutoClass` automatisch die richtige Architektur aus einem gegebenen Checkpoint ab und lädt sie. Mit der Methode `from_pretrained()` kann man schnell ein vortrainiertes Modell für eine beliebige Architektur laden, so dass man keine Zeit und Ressourcen aufwenden muss, um ein Modell von Grund auf zu trainieren. Die Erstellung dieser Art von Checkpoint-agnostischem Code bedeutet, dass Ihr Code, wenn er für einen Checkpoint funktioniert, auch mit einem anderen Checkpoint funktionieren wird - solange er für eine ähnliche Aufgabe trainiert wurde - selbst wenn die Architektur unterschiedlich ist.
<Tip>
Denken Sie daran, dass sich die Architektur auf das Skelett des Modells bezieht und die Checkpoints die Gewichte für eine bestimmte Architektur sind. Zum Beispiel ist [BERT](https://huggingface.co/google-bert/bert-base-uncased) eine Architektur, während `google-bert/bert-base-uncased` ein Checkpoint ist. Modell ist ein allgemeiner Begriff, der entweder Architektur oder Prüfpunkt bedeuten kann.
</Tip>
In dieser Anleitung lernen Sie, wie man:
* Einen vortrainierten Tokenizer lädt.
* Einen vortrainierten Merkmalsextraktor lädt.
* Einen vortrainierten Prozessor lädt.
* Ein vortrainiertes Modell lädt.
## AutoTokenizer
Nahezu jede NLP-Aufgabe beginnt mit einem Tokenizer. Ein Tokenizer wandelt Ihre Eingabe in ein Format um, das vom Modell verarbeitet werden kann.
Laden Sie einen Tokenizer mit [`AutoTokenizer.from_pretrained`]:
```py
>>> from transformers import AutoTokenizer
>>> tokenizer = AutoTokenizer.from_pretrained("google-bert/bert-base-uncased")
```
Dann tokenisieren Sie Ihre Eingabe wie unten gezeigt:
```py
>>> sequence = "In a hole in the ground there lived a hobbit."
>>> print(tokenizer(sequence))
{'input_ids': [101, 1999, 1037, 4920, 1999, 1996, 2598, 2045, 2973, 1037, 7570, 10322, 4183, 1012, 102],
'token_type_ids': [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
'attention_mask': [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]}
```
## AutoFeatureExtractor
Für Audio- und Bildverarbeitungsaufgaben verarbeitet ein Merkmalsextraktor das Audiosignal oder Bild in das richtige Eingabeformat.
Laden Sie einen Merkmalsextraktor mit [`AutoFeatureExtractor.from_pretrained`]:
```py
>>> from transformers import AutoFeatureExtractor
>>> feature_extractor = AutoFeatureExtractor.from_pretrained(
... "ehcalabres/wav2vec2-lg-xlsr-en-speech-emotion-recognition"
... )
```
## AutoProcessor
Multimodale Aufgaben erfordern einen Prozessor, der zwei Arten von Vorverarbeitungswerkzeugen kombiniert. Das Modell [LayoutLMV2](model_doc/layoutlmv2) beispielsweise benötigt einen Feature-Extraktor für Bilder und einen Tokenizer für Text; ein Prozessor kombiniert beide.
Laden Sie einen Prozessor mit [`AutoProcessor.from_pretrained`]:
```py
>>> from transformers import AutoProcessor
>>> processor = AutoProcessor.from_pretrained("microsoft/layoutlmv2-base-uncased")
```
## AutoModel
<frameworkcontent>
<pt>
Mit den `AutoModelFor`-Klassen können Sie schließlich ein vortrainiertes Modell für eine bestimmte Aufgabe laden (siehe [hier](model_doc/auto) für eine vollständige Liste der verfügbaren Aufgaben). Laden Sie zum Beispiel ein Modell für die Sequenzklassifikation mit [`AutoModelForSequenceClassification.from_pretrained`]:
```py
>>> from transformers import AutoModelForSequenceClassification
>>> model = AutoModelForSequenceClassification.from_pretrained("distilbert/distilbert-base-uncased")
```
Sie können denselben Prüfpunkt problemlos wiederverwenden, um eine Architektur für eine andere Aufgabe zu laden:
```py
>>> from transformers import AutoModelForTokenClassification
>>> model = AutoModelForTokenClassification.from_pretrained("distilbert/distilbert-base-uncased")
```
<Tip warning={true}>
Für PyTorch-Modelle verwendet die Methode `from_pretrained()` `torch.load()`, die intern `pickle` verwendet und als unsicher bekannt ist. Generell sollte man niemals ein Modell laden, das aus einer nicht vertrauenswürdigen Quelle stammen könnte, oder das manipuliert worden sein könnte. Dieses Sicherheitsrisiko wird für öffentliche Modelle, die auf dem Hugging Face Hub gehostet werden, teilweise gemildert, da diese bei jeder Übertragung [auf Malware](https://huggingface.co/docs/hub/security-malware) gescannt werden. Siehe die [Hub-Dokumentation](https://huggingface.co/docs/hub/security) für Best Practices wie [signierte Commit-Verifizierung](https://huggingface.co/docs/hub/security-gpg#signing-commits-with-gpg) mit GPG.
TensorFlow- und Flax-Checkpoints sind nicht betroffen und können in PyTorch-Architekturen mit den Kwargs `from_tf` und `from_flax` für die Methode `from_pretrained` geladen werden, um dieses Problem zu umgehen.
</Tip>
Im Allgemeinen empfehlen wir die Verwendung der Klasse "AutoTokenizer" und der Klasse "AutoModelFor", um trainierte Instanzen von Modellen zu laden. Dadurch wird sichergestellt, dass Sie jedes Mal die richtige Architektur laden. Im nächsten [Tutorial] (Vorverarbeitung) erfahren Sie, wie Sie Ihren neu geladenen Tokenizer, Feature Extractor und Prozessor verwenden, um einen Datensatz für die Feinabstimmung vorzuverarbeiten.
</pt>
<tf>
Mit den Klassen `TFAutoModelFor` schließlich können Sie ein vortrainiertes Modell für eine bestimmte Aufgabe laden (siehe [hier](model_doc/auto) für eine vollständige Liste der verfügbaren Aufgaben). Laden Sie zum Beispiel ein Modell für die Sequenzklassifikation mit [`TFAutoModelForSequenceClassification.from_pretrained`]:
```py
>>> from transformers import TFAutoModelForSequenceClassification
>>> model = TFAutoModelForSequenceClassification.from_pretrained("distilbert/distilbert-base-uncased")
```
Sie können denselben Prüfpunkt problemlos wiederverwenden, um eine Architektur für eine andere Aufgabe zu laden:
```py
>>> from transformers import TFAutoModelForTokenClassification
>>> model = TFAutoModelForTokenClassification.from_pretrained("distilbert/distilbert-base-uncased")
```
Im Allgemeinen empfehlen wir, die Klasse "AutoTokenizer" und die Klasse "TFAutoModelFor" zu verwenden, um vortrainierte Instanzen von Modellen zu laden. Dadurch wird sichergestellt, dass Sie jedes Mal die richtige Architektur laden. Im nächsten [Tutorial] (Vorverarbeitung) erfahren Sie, wie Sie Ihren neu geladenen Tokenizer, Feature Extractor und Prozessor verwenden, um einen Datensatz für die Feinabstimmung vorzuverarbeiten.
</tf>
</frameworkcontent>
| transformers/docs/source/de/autoclass_tutorial.md/0 | {
"file_path": "transformers/docs/source/de/autoclass_tutorial.md",
"repo_id": "transformers",
"token_count": 2644
} | 239 |
# Optimizing inference
perf_infer_gpu_many: perf_infer_gpu_one
| transformers/docs/source/en/_redirects.yml/0 | {
"file_path": "transformers/docs/source/en/_redirects.yml",
"repo_id": "transformers",
"token_count": 25
} | 240 |
<!--Copyright 2023 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Custom Tools and Prompts
<Tip>
If you are not aware of what tools and agents are in the context of transformers, we recommend you read the
[Transformers Agents](transformers_agents) page first.
</Tip>
<Tip warning={true}>
Transformers Agents is an experimental API that is subject to change at any time. Results returned by the agents
can vary as the APIs or underlying models are prone to change.
</Tip>
Creating and using custom tools and prompts is paramount to empowering the agent and having it perform new tasks.
In this guide we'll take a look at:
- How to customize the prompt
- How to use custom tools
- How to create custom tools
## Customizing the prompt
As explained in [Transformers Agents](transformers_agents) agents can run in [`~Agent.run`] and [`~Agent.chat`] mode.
Both the `run` and `chat` modes underlie the same logic. The language model powering the agent is conditioned on a long
prompt and completes the prompt by generating the next tokens until the stop token is reached.
The only difference between the two modes is that during the `chat` mode the prompt is extended with
previous user inputs and model generations. This allows the agent to have access to past interactions,
seemingly giving the agent some kind of memory.
### Structure of the prompt
Let's take a closer look at how the prompt is structured to understand how it can be best customized.
The prompt is structured broadly into four parts.
- 1. Introduction: how the agent should behave, explanation of the concept of tools.
- 2. Description of all the tools. This is defined by a `<<all_tools>>` token that is dynamically replaced at runtime with the tools defined/chosen by the user.
- 3. A set of examples of tasks and their solution
- 4. Current example, and request for solution.
To better understand each part, let's look at a shortened version of how the `run` prompt can look like:
````text
I will ask you to perform a task, your job is to come up with a series of simple commands in Python that will perform the task.
[...]
You can print intermediate results if it makes sense to do so.
Tools:
- document_qa: This is a tool that answers a question about a document (pdf). It takes an input named `document` which should be the document containing the information, as well as a `question` that is the question about the document. It returns a text that contains the answer to the question.
- image_captioner: This is a tool that generates a description of an image. It takes an input named `image` which should be the image to the caption and returns a text that contains the description in English.
[...]
Task: "Answer the question in the variable `question` about the image stored in the variable `image`. The question is in French."
I will use the following tools: `translator` to translate the question into English and then `image_qa` to answer the question on the input image.
Answer:
```py
translated_question = translator(question=question, src_lang="French", tgt_lang="English")
print(f"The translated question is {translated_question}.")
answer = image_qa(image=image, question=translated_question)
print(f"The answer is {answer}")
```
Task: "Identify the oldest person in the `document` and create an image showcasing the result as a banner."
I will use the following tools: `document_qa` to find the oldest person in the document, then `image_generator` to generate an image according to the answer.
Answer:
```py
answer = document_qa(document, question="What is the oldest person?")
print(f"The answer is {answer}.")
image = image_generator("A banner showing " + answer)
```
[...]
Task: "Draw me a picture of rivers and lakes"
I will use the following
````
The introduction (the text before *"Tools:"*) explains precisely how the model shall behave and what it should do.
This part most likely does not need to be customized as the agent shall always behave the same way.
The second part (the bullet points below *"Tools"*) is dynamically added upon calling `run` or `chat`. There are
exactly as many bullet points as there are tools in `agent.toolbox` and each bullet point consists of the name
and description of the tool:
```text
- <tool.name>: <tool.description>
```
Let's verify this quickly by loading the document_qa tool and printing out the name and description.
```py
from transformers import load_tool
document_qa = load_tool("document-question-answering")
print(f"- {document_qa.name}: {document_qa.description}")
```
which gives:
```text
- document_qa: This is a tool that answers a question about a document (pdf). It takes an input named `document` which should be the document containing the information, as well as a `question` that is the question about the document. It returns a text that contains the answer to the question.
```
We can see that the tool name is short and precise. The description includes two parts, the first explaining
what the tool does and the second states what input arguments and return values are expected.
A good tool name and tool description are very important for the agent to correctly use it. Note that the only
information the agent has about the tool is its name and description, so one should make sure that both
are precisely written and match the style of the existing tools in the toolbox. In particular make sure the description
mentions all the arguments expected by name in code-style, along with the expected type and a description of what they
are.
<Tip>
Check the naming and description of the curated Transformers tools to better understand what name and
description a tool is expected to have. You can see all tools with the [`Agent.toolbox`] property.
</Tip>
The third part includes a set of curated examples that show the agent exactly what code it should produce
for what kind of user request. The large language models empowering the agent are extremely good at
recognizing patterns in a prompt and repeating the pattern with new data. Therefore, it is very important
that the examples are written in a way that maximizes the likelihood of the agent to generating correct,
executable code in practice.
Let's have a look at one example:
````text
Task: "Identify the oldest person in the `document` and create an image showcasing the result as a banner."
I will use the following tools: `document_qa` to find the oldest person in the document, then `image_generator` to generate an image according to the answer.
Answer:
```py
answer = document_qa(document, question="What is the oldest person?")
print(f"The answer is {answer}.")
image = image_generator("A banner showing " + answer)
```
````
The pattern the model is prompted to repeat has three parts: The task statement, the agent's explanation of
what it intends to do, and finally the generated code. Every example that is part of the prompt has this exact
pattern, thus making sure that the agent will reproduce exactly the same pattern when generating new tokens.
The prompt examples are curated by the Transformers team and rigorously evaluated on a set of
[problem statements](https://github.com/huggingface/transformers/blob/main/src/transformers/tools/evaluate_agent.py)
to ensure that the agent's prompt is as good as possible to solve real use cases of the agent.
The final part of the prompt corresponds to:
```text
Task: "Draw me a picture of rivers and lakes"
I will use the following
```
is a final and unfinished example that the agent is tasked to complete. The unfinished example
is dynamically created based on the actual user input. For the above example, the user ran:
```py
agent.run("Draw me a picture of rivers and lakes")
```
The user input - *a.k.a* the task: *"Draw me a picture of rivers and lakes"* is cast into the
prompt template: "Task: <task> \n\n I will use the following". This sentence makes up the final lines of the
prompt the agent is conditioned on, therefore strongly influencing the agent to finish the example
exactly in the same way it was previously done in the examples.
Without going into too much detail, the chat template has the same prompt structure with the
examples having a slightly different style, *e.g.*:
````text
[...]
=====
Human: Answer the question in the variable `question` about the image stored in the variable `image`.
Assistant: I will use the tool `image_qa` to answer the question on the input image.
```py
answer = image_qa(text=question, image=image)
print(f"The answer is {answer}")
```
Human: I tried this code, it worked but didn't give me a good result. The question is in French
Assistant: In this case, the question needs to be translated first. I will use the tool `translator` to do this.
```py
translated_question = translator(question=question, src_lang="French", tgt_lang="English")
print(f"The translated question is {translated_question}.")
answer = image_qa(text=translated_question, image=image)
print(f"The answer is {answer}")
```
=====
[...]
````
Contrary, to the examples of the `run` prompt, each `chat` prompt example has one or more exchanges between the
*Human* and the *Assistant*. Every exchange is structured similarly to the example of the `run` prompt.
The user's input is appended to behind *Human:* and the agent is prompted to first generate what needs to be done
before generating code. An exchange can be based on previous exchanges, therefore allowing the user to refer
to past exchanges as is done *e.g.* above by the user's input of "I tried **this** code" refers to the
previously generated code of the agent.
Upon running `.chat`, the user's input or *task* is cast into an unfinished example of the form:
```text
Human: <user-input>\n\nAssistant:
```
which the agent completes. Contrary to the `run` command, the `chat` command then appends the completed example
to the prompt, thus giving the agent more context for the next `chat` turn.
Great now that we know how the prompt is structured, let's see how we can customize it!
### Writing good user inputs
While large language models are getting better and better at understanding users' intentions, it helps
enormously to be as precise as possible to help the agent pick the correct task. What does it mean to be
as precise as possible?
The agent sees a list of tool names and their description in its prompt. The more tools are added the
more difficult it becomes for the agent to choose the correct tool and it's even more difficult to choose
the correct sequences of tools to run. Let's look at a common failure case, here we will only return
the code to analyze it.
```py
from transformers import HfAgent
agent = HfAgent("https://api-inference.huggingface.co/models/bigcode/starcoder")
agent.run("Show me a tree", return_code=True)
```
gives:
```text
==Explanation from the agent==
I will use the following tool: `image_segmenter` to create a segmentation mask for the image.
==Code generated by the agent==
mask = image_segmenter(image, prompt="tree")
```
which is probably not what we wanted. Instead, it is more likely that we want an image of a tree to be generated.
To steer the agent more towards using a specific tool it can therefore be very helpful to use important keywords that
are present in the tool's name and description. Let's have a look.
```py
agent.toolbox["image_generator"].description
```
```text
'This is a tool that creates an image according to a prompt, which is a text description. It takes an input named `prompt` which contains the image description and outputs an image.
```
The name and description make use of the keywords "image", "prompt", "create" and "generate". Using these words will most likely work better here. Let's refine our prompt a bit.
```py
agent.run("Create an image of a tree", return_code=True)
```
gives:
```text
==Explanation from the agent==
I will use the following tool `image_generator` to generate an image of a tree.
==Code generated by the agent==
image = image_generator(prompt="tree")
```
Much better! That looks more like what we want. In short, when you notice that the agent struggles to
correctly map your task to the correct tools, try looking up the most pertinent keywords of the tool's name
and description and try refining your task request with it.
### Customizing the tool descriptions
As we've seen before the agent has access to each of the tools' names and descriptions. The base tools
should have very precise names and descriptions, however, you might find that it could help to change the
the description or name of a tool for your specific use case. This might become especially important
when you've added multiple tools that are very similar or if you want to use your agent only for a certain
domain, *e.g.* image generation and transformations.
A common problem is that the agent confuses image generation with image transformation/modification when
used a lot for image generation tasks, *e.g.*
```py
agent.run("Make an image of a house and a car", return_code=True)
```
returns
```text
==Explanation from the agent==
I will use the following tools `image_generator` to generate an image of a house and `image_transformer` to transform the image of a car into the image of a house.
==Code generated by the agent==
house_image = image_generator(prompt="A house")
car_image = image_generator(prompt="A car")
house_car_image = image_transformer(image=car_image, prompt="A house")
```
which is probably not exactly what we want here. It seems like the agent has a difficult time
to understand the difference between `image_generator` and `image_transformer` and often uses the two together.
We can help the agent here by changing the tool name and description of `image_transformer`. Let's instead call it `modifier`
to disassociate it a bit from "image" and "prompt":
```py
agent.toolbox["modifier"] = agent.toolbox.pop("image_transformer")
agent.toolbox["modifier"].description = agent.toolbox["modifier"].description.replace(
"transforms an image according to a prompt", "modifies an image"
)
```
Now "modify" is a strong cue to use the new image processor which should help with the above prompt. Let's run it again.
```py
agent.run("Make an image of a house and a car", return_code=True)
```
Now we're getting:
```text
==Explanation from the agent==
I will use the following tools: `image_generator` to generate an image of a house, then `image_generator` to generate an image of a car.
==Code generated by the agent==
house_image = image_generator(prompt="A house")
car_image = image_generator(prompt="A car")
```
which is definitely closer to what we had in mind! However, we want to have both the house and car in the same image. Steering the task more toward single image generation should help:
```py
agent.run("Create image: 'A house and car'", return_code=True)
```
```text
==Explanation from the agent==
I will use the following tool: `image_generator` to generate an image.
==Code generated by the agent==
image = image_generator(prompt="A house and car")
```
<Tip warning={true}>
Agents are still brittle for many use cases, especially when it comes to
slightly more complex use cases like generating an image of multiple objects.
Both the agent itself and the underlying prompt will be further improved in the coming
months making sure that agents become more robust to a variety of user inputs.
</Tip>
### Customizing the whole prompt
To give the user maximum flexibility, the whole prompt template as explained in [above](#structure-of-the-prompt)
can be overwritten by the user. In this case make sure that your custom prompt includes an introduction section,
a tool section, an example section, and an unfinished example section. If you want to overwrite the `run` prompt template,
you can do as follows:
```py
template = """ [...] """
agent = HfAgent(your_endpoint, run_prompt_template=template)
```
<Tip warning={true}>
Please make sure to have the `<<all_tools>>` string and the `<<prompt>>` defined somewhere in the `template` so that the agent can be aware
of the tools, it has available to it as well as correctly insert the user's prompt.
</Tip>
Similarly, one can overwrite the `chat` prompt template. Note that the `chat` mode always uses the following format for the exchanges:
```text
Human: <<task>>
Assistant:
```
Therefore it is important that the examples of the custom `chat` prompt template also make use of this format.
You can overwrite the `chat` template at instantiation as follows.
```python
template = """ [...] """
agent = HfAgent(url_endpoint=your_endpoint, chat_prompt_template=template)
```
<Tip warning={true}>
Please make sure to have the `<<all_tools>>` string defined somewhere in the `template` so that the agent can be aware
of the tools, it has available to it.
</Tip>
In both cases, you can pass a repo ID instead of the prompt template if you would like to use a template hosted by someone in the community. The default prompts live in [this repo](https://huggingface.co/datasets/huggingface-tools/default-prompts) as an example.
To upload your custom prompt on a repo on the Hub and share it with the community just make sure:
- to use a dataset repository
- to put the prompt template for the `run` command in a file named `run_prompt_template.txt`
- to put the prompt template for the `chat` command in a file named `chat_prompt_template.txt`
## Using custom tools
<Tip warning={true}>
Using custom tools in your local runtime means that you'll download code to run on your machine.
ALWAYS inspect the tool you're downloading before loading it within your runtime, as you would do when
installing a package using pip/npm/apt.
</Tip>
In this section, we'll be leveraging two existing custom tools that are specific to image generation:
- We replace [huggingface-tools/image-transformation](https://huggingface.co/spaces/huggingface-tools/image-transformation),
with [diffusers/controlnet-canny-tool](https://huggingface.co/spaces/diffusers/controlnet-canny-tool)
to allow for more image modifications.
- We add a new tool for image upscaling to the default toolbox:
[diffusers/latent-upscaler-tool](https://huggingface.co/spaces/diffusers/latent-upscaler-tool) replace the existing image-transformation tool.
We'll start by loading the custom tools with the convenient [`load_tool`] function:
```py
from transformers import load_tool
controlnet_transformer = load_tool("diffusers/controlnet-canny-tool")
upscaler = load_tool("diffusers/latent-upscaler-tool")
```
Upon adding custom tools to an agent, the tools' descriptions and names are automatically
included in the agents' prompts. Thus, it is imperative that custom tools have
a well-written description and name in order for the agent to understand how to use them.
Let's take a look at the description and name of `controlnet_transformer`:
```py
print(f"Description: '{controlnet_transformer.description}'")
print(f"Name: '{controlnet_transformer.name}'")
```
gives
```text
Description: 'This is a tool that transforms an image with ControlNet according to a prompt.
It takes two inputs: `image`, which should be the image to transform, and `prompt`, which should be the prompt to use to change it. It returns the modified image.'
Name: 'image_transformer'
```
The name and description are accurate and fit the style of the [curated set of tools](./transformers_agents#a-curated-set-of-tools).
Next, let's instantiate an agent with `controlnet_transformer` and `upscaler`:
```py
tools = [controlnet_transformer, upscaler]
agent = HfAgent("https://api-inference.huggingface.co/models/bigcode/starcoder", additional_tools=tools)
```
This command should give you the following info:
```text
image_transformer has been replaced by <transformers_modules.diffusers.controlnet-canny-tool.bd76182c7777eba9612fc03c0
8718a60c0aa6312.image_transformation.ControlNetTransformationTool object at 0x7f1d3bfa3a00> as provided in `additional_tools`
```
The set of curated tools already has an `image_transformer` tool which is hereby replaced with our custom tool.
<Tip>
Overwriting existing tools can be beneficial if we want to use a custom tool exactly for the same task as an existing tool
because the agent is well-versed in using the specific task. Beware that the custom tool should follow the exact same API
as the overwritten tool in this case, or you should adapt the prompt template to make sure all examples using that
tool are updated.
</Tip>
The upscaler tool was given the name `image_upscaler` which is not yet present in the default toolbox and is therefore simply added to the list of tools.
You can always have a look at the toolbox that is currently available to the agent via the `agent.toolbox` attribute:
```py
print("\n".join([f"- {a}" for a in agent.toolbox.keys()]))
```
```text
- document_qa
- image_captioner
- image_qa
- image_segmenter
- transcriber
- summarizer
- text_classifier
- text_qa
- text_reader
- translator
- image_transformer
- text_downloader
- image_generator
- video_generator
- image_upscaler
```
Note how `image_upscaler` is now part of the agents' toolbox.
Let's now try out the new tools! We will re-use the image we generated in [Transformers Agents Quickstart](./transformers_agents#single-execution-run).
```py
from diffusers.utils import load_image
image = load_image(
"https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/transformers/rivers_and_lakes.png"
)
```
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/transformers/rivers_and_lakes.png" width=200>
Let's transform the image into a beautiful winter landscape:
```py
image = agent.run("Transform the image: 'A frozen lake and snowy forest'", image=image)
```
```text
==Explanation from the agent==
I will use the following tool: `image_transformer` to transform the image.
==Code generated by the agent==
image = image_transformer(image, prompt="A frozen lake and snowy forest")
```
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/transformers/rivers_and_lakes_winter.png" width=200>
The new image processing tool is based on ControlNet which can make very strong modifications to the image.
By default the image processing tool returns an image of size 512x512 pixels. Let's see if we can upscale it.
```py
image = agent.run("Upscale the image", image)
```
```text
==Explanation from the agent==
I will use the following tool: `image_upscaler` to upscale the image.
==Code generated by the agent==
upscaled_image = image_upscaler(image)
```
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/transformers/rivers_and_lakes_winter_upscale.png" width=400>
The agent automatically mapped our prompt "Upscale the image" to the just added upscaler tool purely based on the description and name of the upscaler tool
and was able to correctly run it.
Next, let's have a look at how you can create a new custom tool.
### Adding new tools
In this section, we show how to create a new tool that can be added to the agent.
#### Creating a new tool
We'll first start by creating a tool. We'll add the not-so-useful yet fun task of fetching the model on the Hugging Face
Hub with the most downloads for a given task.
We can do that with the following code:
```python
from huggingface_hub import list_models
task = "text-classification"
model = next(iter(list_models(filter=task, sort="downloads", direction=-1)))
print(model.id)
```
For the task `text-classification`, this returns `'facebook/bart-large-mnli'`, for `translation` it returns `'google-t5/t5-base`.
How do we convert this to a tool that the agent can leverage? All tools depend on the superclass `Tool` that holds the
main attributes necessary. We'll create a class that inherits from it:
```python
from transformers import Tool
class HFModelDownloadsTool(Tool):
pass
```
This class has a few needs:
- An attribute `name`, which corresponds to the name of the tool itself. To be in tune with other tools which have a
performative name, we'll name it `model_download_counter`.
- An attribute `description`, which will be used to populate the prompt of the agent.
- `inputs` and `outputs` attributes. Defining this will help the python interpreter make educated choices about types,
and will allow for a gradio-demo to be spawned when we push our tool to the Hub. They're both a list of expected
values, which can be `text`, `image`, or `audio`.
- A `__call__` method which contains the inference code. This is the code we've played with above!
Here's what our class looks like now:
```python
from transformers import Tool
from huggingface_hub import list_models
class HFModelDownloadsTool(Tool):
name = "model_download_counter"
description = (
"This is a tool that returns the most downloaded model of a given task on the Hugging Face Hub. "
"It takes the name of the category (such as text-classification, depth-estimation, etc), and "
"returns the name of the checkpoint."
)
inputs = ["text"]
outputs = ["text"]
def __call__(self, task: str):
model = next(iter(list_models(filter=task, sort="downloads", direction=-1)))
return model.id
```
We now have our tool handy. Save it in a file and import it from your main script. Let's name this file
`model_downloads.py`, so the resulting import code looks like this:
```python
from model_downloads import HFModelDownloadsTool
tool = HFModelDownloadsTool()
```
In order to let others benefit from it and for simpler initialization, we recommend pushing it to the Hub under your
namespace. To do so, just call `push_to_hub` on the `tool` variable:
```python
tool.push_to_hub("hf-model-downloads")
```
You now have your code on the Hub! Let's take a look at the final step, which is to have the agent use it.
#### Having the agent use the tool
We now have our tool that lives on the Hub which can be instantiated as such (change the user name for your tool):
```python
from transformers import load_tool
tool = load_tool("lysandre/hf-model-downloads")
```
In order to use it in the agent, simply pass it in the `additional_tools` parameter of the agent initialization method:
```python
from transformers import HfAgent
agent = HfAgent("https://api-inference.huggingface.co/models/bigcode/starcoder", additional_tools=[tool])
agent.run(
"Can you read out loud the name of the model that has the most downloads in the 'text-to-video' task on the Hugging Face Hub?"
)
```
which outputs the following:
```text
==Code generated by the agent==
model = model_download_counter(task="text-to-video")
print(f"The model with the most downloads is {model}.")
audio_model = text_reader(model)
==Result==
The model with the most downloads is damo-vilab/text-to-video-ms-1.7b.
```
and generates the following audio.
| **Audio** |
|------------------------------------------------------------------------------------------------------------------------------------------------------|
| <audio controls><source src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/transformers/damo.wav" type="audio/wav"/> |
<Tip>
Depending on the LLM, some are quite brittle and require very exact prompts in order to work well. Having a well-defined
name and description of the tool is paramount to having it be leveraged by the agent.
</Tip>
### Replacing existing tools
Replacing existing tools can be done simply by assigning a new item to the agent's toolbox. Here's how one would do so:
```python
from transformers import HfAgent, load_tool
agent = HfAgent("https://api-inference.huggingface.co/models/bigcode/starcoder")
agent.toolbox["image-transformation"] = load_tool("diffusers/controlnet-canny-tool")
```
<Tip>
Beware when replacing tools with others! This will also adjust the agent's prompt. This can be good if you have a better
prompt suited for the task, but it can also result in your tool being selected way more than others or for other
tools to be selected instead of the one you have defined.
</Tip>
## Leveraging gradio-tools
[gradio-tools](https://github.com/freddyaboulton/gradio-tools) is a powerful library that allows using Hugging
Face Spaces as tools. It supports many existing Spaces as well as custom Spaces to be designed with it.
We offer support for `gradio_tools` by using the `Tool.from_gradio` method. For example, we want to take
advantage of the `StableDiffusionPromptGeneratorTool` tool offered in the `gradio-tools` toolkit so as to
improve our prompts and generate better images.
We first import the tool from `gradio_tools` and instantiate it:
```python
from gradio_tools import StableDiffusionPromptGeneratorTool
gradio_tool = StableDiffusionPromptGeneratorTool()
```
We pass that instance to the `Tool.from_gradio` method:
```python
from transformers import Tool
tool = Tool.from_gradio(gradio_tool)
```
Now we can manage it exactly as we would a usual custom tool. We leverage it to improve our prompt
` a rabbit wearing a space suit`:
```python
from transformers import HfAgent
agent = HfAgent("https://api-inference.huggingface.co/models/bigcode/starcoder", additional_tools=[tool])
agent.run("Generate an image of the `prompt` after improving it.", prompt="A rabbit wearing a space suit")
```
The model adequately leverages the tool:
```text
==Explanation from the agent==
I will use the following tools: `StableDiffusionPromptGenerator` to improve the prompt, then `image_generator` to generate an image according to the improved prompt.
==Code generated by the agent==
improved_prompt = StableDiffusionPromptGenerator(prompt)
print(f"The improved prompt is {improved_prompt}.")
image = image_generator(improved_prompt)
```
Before finally generating the image:
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/transformers/rabbit.png">
<Tip warning={true}>
gradio-tools requires *textual* inputs and outputs, even when working with different modalities. This implementation
works with image and audio objects. The two are currently incompatible, but will rapidly become compatible as we
work to improve the support.
</Tip>
## Future compatibility with Langchain
We love Langchain and think it has a very compelling suite of tools. In order to handle these tools,
Langchain requires *textual* inputs and outputs, even when working with different modalities.
This is often the serialized version (i.e., saved to disk) of the objects.
This difference means that multi-modality isn't handled between transformers-agents and langchain.
We aim for this limitation to be resolved in future versions, and welcome any help from avid langchain
users to help us achieve this compatibility.
We would love to have better support. If you would like to help, please
[open an issue](https://github.com/huggingface/transformers/issues/new) and share what you have in mind.
| transformers/docs/source/en/custom_tools.md/0 | {
"file_path": "transformers/docs/source/en/custom_tools.md",
"repo_id": "transformers",
"token_count": 8736
} | 241 |
<!--Copyright 2020 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Models
The base classes [`PreTrainedModel`], [`TFPreTrainedModel`], and
[`FlaxPreTrainedModel`] implement the common methods for loading/saving a model either from a local
file or directory, or from a pretrained model configuration provided by the library (downloaded from HuggingFace's AWS
S3 repository).
[`PreTrainedModel`] and [`TFPreTrainedModel`] also implement a few methods which
are common among all the models to:
- resize the input token embeddings when new tokens are added to the vocabulary
- prune the attention heads of the model.
The other methods that are common to each model are defined in [`~modeling_utils.ModuleUtilsMixin`]
(for the PyTorch models) and [`~modeling_tf_utils.TFModuleUtilsMixin`] (for the TensorFlow models) or
for text generation, [`~generation.GenerationMixin`] (for the PyTorch models),
[`~generation.TFGenerationMixin`] (for the TensorFlow models) and
[`~generation.FlaxGenerationMixin`] (for the Flax/JAX models).
## PreTrainedModel
[[autodoc]] PreTrainedModel
- push_to_hub
- all
<a id='from_pretrained-torch-dtype'></a>
### Large model loading
In Transformers 4.20.0, the [`~PreTrainedModel.from_pretrained`] method has been reworked to accommodate large models using [Accelerate](https://huggingface.co/docs/accelerate/big_modeling). This requires Accelerate >= 0.9.0 and PyTorch >= 1.9.0. Instead of creating the full model, then loading the pretrained weights inside it (which takes twice the size of the model in RAM, one for the randomly initialized model, one for the weights), there is an option to create the model as an empty shell, then only materialize its parameters when the pretrained weights are loaded.
This option can be activated with `low_cpu_mem_usage=True`. The model is first created on the Meta device (with empty weights) and the state dict is then loaded inside it (shard by shard in the case of a sharded checkpoint). This way the maximum RAM used is the full size of the model only.
```py
from transformers import AutoModelForSeq2SeqLM
t0pp = AutoModelForSeq2SeqLM.from_pretrained("bigscience/T0pp", low_cpu_mem_usage=True)
```
Moreover, you can directly place the model on different devices if it doesn't fully fit in RAM (only works for inference for now). With `device_map="auto"`, Accelerate will determine where to put each layer to maximize the use of your fastest devices (GPUs) and offload the rest on the CPU, or even the hard drive if you don't have enough GPU RAM (or CPU RAM). Even if the model is split across several devices, it will run as you would normally expect.
When passing a `device_map`, `low_cpu_mem_usage` is automatically set to `True`, so you don't need to specify it:
```py
from transformers import AutoModelForSeq2SeqLM
t0pp = AutoModelForSeq2SeqLM.from_pretrained("bigscience/T0pp", device_map="auto")
```
You can inspect how the model was split across devices by looking at its `hf_device_map` attribute:
```py
t0pp.hf_device_map
```
```python out
{'shared': 0,
'decoder.embed_tokens': 0,
'encoder': 0,
'decoder.block.0': 0,
'decoder.block.1': 1,
'decoder.block.2': 1,
'decoder.block.3': 1,
'decoder.block.4': 1,
'decoder.block.5': 1,
'decoder.block.6': 1,
'decoder.block.7': 1,
'decoder.block.8': 1,
'decoder.block.9': 1,
'decoder.block.10': 1,
'decoder.block.11': 1,
'decoder.block.12': 1,
'decoder.block.13': 1,
'decoder.block.14': 1,
'decoder.block.15': 1,
'decoder.block.16': 1,
'decoder.block.17': 1,
'decoder.block.18': 1,
'decoder.block.19': 1,
'decoder.block.20': 1,
'decoder.block.21': 1,
'decoder.block.22': 'cpu',
'decoder.block.23': 'cpu',
'decoder.final_layer_norm': 'cpu',
'decoder.dropout': 'cpu',
'lm_head': 'cpu'}
```
You can also write your own device map following the same format (a dictionary layer name to device). It should map all parameters of the model to a given device, but you don't have to detail where all the submodules of one layer go if that layer is entirely on the same device. For instance, the following device map would work properly for T0pp (as long as you have the GPU memory):
```python
device_map = {"shared": 0, "encoder": 0, "decoder": 1, "lm_head": 1}
```
Another way to minimize the memory impact of your model is to instantiate it at a lower precision dtype (like `torch.float16`) or use direct quantization techniques as described below.
### Model Instantiation dtype
Under Pytorch a model normally gets instantiated with `torch.float32` format. This can be an issue if one tries to
load a model whose weights are in fp16, since it'd require twice as much memory. To overcome this limitation, you can
either explicitly pass the desired `dtype` using `torch_dtype` argument:
```python
model = T5ForConditionalGeneration.from_pretrained("t5", torch_dtype=torch.float16)
```
or, if you want the model to always load in the most optimal memory pattern, you can use the special value `"auto"`,
and then `dtype` will be automatically derived from the model's weights:
```python
model = T5ForConditionalGeneration.from_pretrained("t5", torch_dtype="auto")
```
Models instantiated from scratch can also be told which `dtype` to use with:
```python
config = T5Config.from_pretrained("t5")
model = AutoModel.from_config(config)
```
Due to Pytorch design, this functionality is only available for floating dtypes.
## ModuleUtilsMixin
[[autodoc]] modeling_utils.ModuleUtilsMixin
## TFPreTrainedModel
[[autodoc]] TFPreTrainedModel
- push_to_hub
- all
## TFModelUtilsMixin
[[autodoc]] modeling_tf_utils.TFModelUtilsMixin
## FlaxPreTrainedModel
[[autodoc]] FlaxPreTrainedModel
- push_to_hub
- all
## Pushing to the Hub
[[autodoc]] utils.PushToHubMixin
## Sharded checkpoints
[[autodoc]] modeling_utils.load_sharded_checkpoint
| transformers/docs/source/en/main_classes/model.md/0 | {
"file_path": "transformers/docs/source/en/main_classes/model.md",
"repo_id": "transformers",
"token_count": 2010
} | 242 |
<!--Copyright 2023 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
-->
# Bark
## Overview
Bark is a transformer-based text-to-speech model proposed by Suno AI in [suno-ai/bark](https://github.com/suno-ai/bark).
Bark is made of 4 main models:
- [`BarkSemanticModel`] (also referred to as the 'text' model): a causal auto-regressive transformer model that takes as input tokenized text, and predicts semantic text tokens that capture the meaning of the text.
- [`BarkCoarseModel`] (also referred to as the 'coarse acoustics' model): a causal autoregressive transformer, that takes as input the results of the [`BarkSemanticModel`] model. It aims at predicting the first two audio codebooks necessary for EnCodec.
- [`BarkFineModel`] (the 'fine acoustics' model), this time a non-causal autoencoder transformer, which iteratively predicts the last codebooks based on the sum of the previous codebooks embeddings.
- having predicted all the codebook channels from the [`EncodecModel`], Bark uses it to decode the output audio array.
It should be noted that each of the first three modules can support conditional speaker embeddings to condition the output sound according to specific predefined voice.
This model was contributed by [Yoach Lacombe (ylacombe)](https://huggingface.co/ylacombe) and [Sanchit Gandhi (sanchit-gandhi)](https://github.com/sanchit-gandhi).
The original code can be found [here](https://github.com/suno-ai/bark).
### Optimizing Bark
Bark can be optimized with just a few extra lines of code, which **significantly reduces its memory footprint** and **accelerates inference**.
#### Using half-precision
You can speed up inference and reduce memory footprint by 50% simply by loading the model in half-precision.
```python
from transformers import BarkModel
import torch
device = "cuda" if torch.cuda.is_available() else "cpu"
model = BarkModel.from_pretrained("suno/bark-small", torch_dtype=torch.float16).to(device)
```
#### Using CPU offload
As mentioned above, Bark is made up of 4 sub-models, which are called up sequentially during audio generation. In other words, while one sub-model is in use, the other sub-models are idle.
If you're using a CUDA device, a simple solution to benefit from an 80% reduction in memory footprint is to offload the submodels from GPU to CPU when they're idle. This operation is called *CPU offloading*. You can use it with one line of code as follows:
```python
model.enable_cpu_offload()
```
Note that 🤗 Accelerate must be installed before using this feature. [Here's how to install it.](https://huggingface.co/docs/accelerate/basic_tutorials/install)
#### Using Better Transformer
Better Transformer is an 🤗 Optimum feature that performs kernel fusion under the hood. You can gain 20% to 30% in speed with zero performance degradation. It only requires one line of code to export the model to 🤗 Better Transformer:
```python
model = model.to_bettertransformer()
```
Note that 🤗 Optimum must be installed before using this feature. [Here's how to install it.](https://huggingface.co/docs/optimum/installation)
#### Using Flash Attention 2
Flash Attention 2 is an even faster, optimized version of the previous optimization.
##### Installation
First, check whether your hardware is compatible with Flash Attention 2. The latest list of compatible hardware can be found in the [official documentation](https://github.com/Dao-AILab/flash-attention#installation-and-features). If your hardware is not compatible with Flash Attention 2, you can still benefit from attention kernel optimisations through Better Transformer support covered [above](https://huggingface.co/docs/transformers/main/en/model_doc/bark#using-better-transformer).
Next, [install](https://github.com/Dao-AILab/flash-attention#installation-and-features) the latest version of Flash Attention 2:
```bash
pip install -U flash-attn --no-build-isolation
```
##### Usage
To load a model using Flash Attention 2, we can pass the `attn_implementation="flash_attention_2"` flag to [`.from_pretrained`](https://huggingface.co/docs/transformers/main/en/main_classes/model#transformers.PreTrainedModel.from_pretrained). We'll also load the model in half-precision (e.g. `torch.float16`), since it results in almost no degradation to audio quality but significantly lower memory usage and faster inference:
```python
model = BarkModel.from_pretrained("suno/bark-small", torch_dtype=torch.float16, attn_implementation="flash_attention_2").to(device)
```
##### Performance comparison
The following diagram shows the latency for the native attention implementation (no optimisation) against Better Transformer and Flash Attention 2. In all cases, we generate 400 semantic tokens on a 40GB A100 GPU with PyTorch 2.1. Flash Attention 2 is also consistently faster than Better Transformer, and its performance improves even more as batch sizes increase:
<div style="text-align: center">
<img src="https://huggingface.co/datasets/ylacombe/benchmark-comparison/resolve/main/Bark%20Optimization%20Benchmark.png">
</div>
To put this into perspective, on an NVIDIA A100 and when generating 400 semantic tokens with a batch size of 16, you can get 17 times the [throughput](https://huggingface.co/blog/optimizing-bark#throughput) and still be 2 seconds faster than generating sentences one by one with the native model implementation. In other words, all the samples will be generated 17 times faster.
At batch size 8, on an NVIDIA A100, Flash Attention 2 is also 10% faster than Better Transformer, and at batch size 16, 25%.
#### Combining optimization techniques
You can combine optimization techniques, and use CPU offload, half-precision and Flash Attention 2 (or 🤗 Better Transformer) all at once.
```python
from transformers import BarkModel
import torch
device = "cuda" if torch.cuda.is_available() else "cpu"
# load in fp16 and use Flash Attention 2
model = BarkModel.from_pretrained("suno/bark-small", torch_dtype=torch.float16, attn_implementation="flash_attention_2").to(device)
# enable CPU offload
model.enable_cpu_offload()
```
Find out more on inference optimization techniques [here](https://huggingface.co/docs/transformers/perf_infer_gpu_one).
### Usage tips
Suno offers a library of voice presets in a number of languages [here](https://suno-ai.notion.site/8b8e8749ed514b0cbf3f699013548683?v=bc67cff786b04b50b3ceb756fd05f68c).
These presets are also uploaded in the hub [here](https://huggingface.co/suno/bark-small/tree/main/speaker_embeddings) or [here](https://huggingface.co/suno/bark/tree/main/speaker_embeddings).
```python
>>> from transformers import AutoProcessor, BarkModel
>>> processor = AutoProcessor.from_pretrained("suno/bark")
>>> model = BarkModel.from_pretrained("suno/bark")
>>> voice_preset = "v2/en_speaker_6"
>>> inputs = processor("Hello, my dog is cute", voice_preset=voice_preset)
>>> audio_array = model.generate(**inputs)
>>> audio_array = audio_array.cpu().numpy().squeeze()
```
Bark can generate highly realistic, **multilingual** speech as well as other audio - including music, background noise and simple sound effects.
```python
>>> # Multilingual speech - simplified Chinese
>>> inputs = processor("惊人的！我会说中文")
>>> # Multilingual speech - French - let's use a voice_preset as well
>>> inputs = processor("Incroyable! Je peux générer du son.", voice_preset="fr_speaker_5")
>>> # Bark can also generate music. You can help it out by adding music notes around your lyrics.
>>> inputs = processor("♪ Hello, my dog is cute ♪")
>>> audio_array = model.generate(**inputs)
>>> audio_array = audio_array.cpu().numpy().squeeze()
```
The model can also produce **nonverbal communications** like laughing, sighing and crying.
```python
>>> # Adding non-speech cues to the input text
>>> inputs = processor("Hello uh ... [clears throat], my dog is cute [laughter]")
>>> audio_array = model.generate(**inputs)
>>> audio_array = audio_array.cpu().numpy().squeeze()
```
To save the audio, simply take the sample rate from the model config and some scipy utility:
```python
>>> from scipy.io.wavfile import write as write_wav
>>> # save audio to disk, but first take the sample rate from the model config
>>> sample_rate = model.generation_config.sample_rate
>>> write_wav("bark_generation.wav", sample_rate, audio_array)
```
## BarkConfig
[[autodoc]] BarkConfig
- all
## BarkProcessor
[[autodoc]] BarkProcessor
- all
- __call__
## BarkModel
[[autodoc]] BarkModel
- generate
- enable_cpu_offload
## BarkSemanticModel
[[autodoc]] BarkSemanticModel
- forward
## BarkCoarseModel
[[autodoc]] BarkCoarseModel
- forward
## BarkFineModel
[[autodoc]] BarkFineModel
- forward
## BarkCausalModel
[[autodoc]] BarkCausalModel
- forward
## BarkCoarseConfig
[[autodoc]] BarkCoarseConfig
- all
## BarkFineConfig
[[autodoc]] BarkFineConfig
- all
## BarkSemanticConfig
[[autodoc]] BarkSemanticConfig
- all
| transformers/docs/source/en/model_doc/bark.md/0 | {
"file_path": "transformers/docs/source/en/model_doc/bark.md",
"repo_id": "transformers",
"token_count": 2760
} | 243 |
<!--Copyright 2023 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# BLIP
## Overview
The BLIP model was proposed in [BLIP: Bootstrapping Language-Image Pre-training for Unified Vision-Language Understanding and Generation](https://arxiv.org/abs/2201.12086) by Junnan Li, Dongxu Li, Caiming Xiong, Steven Hoi.
BLIP is a model that is able to perform various multi-modal tasks including:
- Visual Question Answering
- Image-Text retrieval (Image-text matching)
- Image Captioning
The abstract from the paper is the following:
*Vision-Language Pre-training (VLP) has advanced the performance for many vision-language tasks.
However, most existing pre-trained models only excel in either understanding-based tasks or generation-based tasks. Furthermore, performance improvement has been largely achieved by scaling up the dataset with noisy image-text pairs collected from the web, which is a suboptimal source of supervision. In this paper, we propose BLIP, a new VLP framework which transfers flexibly to both vision-language understanding and generation tasks. BLIP effectively utilizes the noisy web data by bootstrapping the captions, where a captioner generates synthetic captions and a filter removes the noisy ones. We achieve state-of-the-art results on a wide range of vision-language tasks, such as image-text retrieval (+2.7% in average recall@1), image captioning (+2.8% in CIDEr), and VQA (+1.6% in VQA score). BLIP also demonstrates strong generalization ability when directly transferred to videolanguage tasks in a zero-shot manner. Code, models, and datasets are released.*
This model was contributed by [ybelkada](https://huggingface.co/ybelkada).
The original code can be found [here](https://github.com/salesforce/BLIP).
## Resources
- [Jupyter notebook](https://github.com/huggingface/notebooks/blob/main/examples/image_captioning_blip.ipynb) on how to fine-tune BLIP for image captioning on a custom dataset
## BlipConfig
[[autodoc]] BlipConfig
- from_text_vision_configs
## BlipTextConfig
[[autodoc]] BlipTextConfig
## BlipVisionConfig
[[autodoc]] BlipVisionConfig
## BlipProcessor
[[autodoc]] BlipProcessor
## BlipImageProcessor
[[autodoc]] BlipImageProcessor
- preprocess
<frameworkcontent>
<pt>
## BlipModel
[[autodoc]] BlipModel
- forward
- get_text_features
- get_image_features
## BlipTextModel
[[autodoc]] BlipTextModel
- forward
## BlipVisionModel
[[autodoc]] BlipVisionModel
- forward
## BlipForConditionalGeneration
[[autodoc]] BlipForConditionalGeneration
- forward
## BlipForImageTextRetrieval
[[autodoc]] BlipForImageTextRetrieval
- forward
## BlipForQuestionAnswering
[[autodoc]] BlipForQuestionAnswering
- forward
</pt>
<tf>
## TFBlipModel
[[autodoc]] TFBlipModel
- call
- get_text_features
- get_image_features
## TFBlipTextModel
[[autodoc]] TFBlipTextModel
- call
## TFBlipVisionModel
[[autodoc]] TFBlipVisionModel
- call
## TFBlipForConditionalGeneration
[[autodoc]] TFBlipForConditionalGeneration
- call
## TFBlipForImageTextRetrieval
[[autodoc]] TFBlipForImageTextRetrieval
- call
## TFBlipForQuestionAnswering
[[autodoc]] TFBlipForQuestionAnswering
- call
</tf>
</frameworkcontent>
| transformers/docs/source/en/model_doc/blip.md/0 | {
"file_path": "transformers/docs/source/en/model_doc/blip.md",
"repo_id": "transformers",
"token_count": 1242
} | 244 |
<!--Copyright 2022 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# GPT-Sw3
## Overview
The GPT-Sw3 model was first proposed in
[Lessons Learned from GPT-SW3: Building the First Large-Scale Generative Language Model for Swedish](http://www.lrec-conf.org/proceedings/lrec2022/pdf/2022.lrec-1.376.pdf)
by Ariel Ekgren, Amaru Cuba Gyllensten, Evangelia Gogoulou, Alice Heiman, Severine Verlinden, Joey Öhman,
Fredrik Carlsson, Magnus Sahlgren.
Since that first paper the authors have extended their work and trained new models on their new 1.2TB corpora named The Nordic Pile.
GPT-Sw3 is a collection of large decoder-only pretrained transformer language models that were developed by AI Sweden
in collaboration with RISE and the WASP WARA for Media and Language. GPT-Sw3 has been trained on a dataset containing
320B tokens in Swedish, Norwegian, Danish, Icelandic, English, and programming code. The model was pretrained using a
causal language modeling (CLM) objective utilizing the NeMo Megatron GPT implementation.
This model was contributed by [AI Sweden Models](https://huggingface.co/AI-Sweden-Models).
## Usage example
```python
>>> from transformers import AutoTokenizer, AutoModelForCausalLM
>>> tokenizer = AutoTokenizer.from_pretrained("AI-Sweden-Models/gpt-sw3-356m")
>>> model = AutoModelForCausalLM.from_pretrained("AI-Sweden-Models/gpt-sw3-356m")
>>> input_ids = tokenizer("Träd är fina för att", return_tensors="pt")["input_ids"]
>>> generated_token_ids = model.generate(inputs=input_ids, max_new_tokens=10, do_sample=True)[0]
>>> print(tokenizer.decode(generated_token_ids))
Träd är fina för att de är färgstarka. Men ibland är det fint
```
## Resources
- [Text classification task guide](../tasks/sequence_classification)
- [Token classification task guide](../tasks/token_classification)
- [Causal language modeling task guide](../tasks/language_modeling)
<Tip>
The implementation uses the `GPT2Model` coupled with our `GPTSw3Tokenizer`. Refer to [GPT2Model documentation](gpt2)
for API reference and examples.
Note that sentencepiece is required to use our tokenizer and can be installed with `pip install transformers[sentencepiece]` or `pip install sentencepiece`
</Tip>
## GPTSw3Tokenizer
[[autodoc]] GPTSw3Tokenizer
- save_vocabulary
| transformers/docs/source/en/model_doc/gpt-sw3.md/0 | {
"file_path": "transformers/docs/source/en/model_doc/gpt-sw3.md",
"repo_id": "transformers",
"token_count": 879
} | 245 |
<!--Copyright 2021 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# LUKE
## Overview
The LUKE model was proposed in [LUKE: Deep Contextualized Entity Representations with Entity-aware Self-attention](https://arxiv.org/abs/2010.01057) by Ikuya Yamada, Akari Asai, Hiroyuki Shindo, Hideaki Takeda and Yuji Matsumoto.
It is based on RoBERTa and adds entity embeddings as well as an entity-aware self-attention mechanism, which helps
improve performance on various downstream tasks involving reasoning about entities such as named entity recognition,
extractive and cloze-style question answering, entity typing, and relation classification.
The abstract from the paper is the following:
*Entity representations are useful in natural language tasks involving entities. In this paper, we propose new
pretrained contextualized representations of words and entities based on the bidirectional transformer. The proposed
model treats words and entities in a given text as independent tokens, and outputs contextualized representations of
them. Our model is trained using a new pretraining task based on the masked language model of BERT. The task involves
predicting randomly masked words and entities in a large entity-annotated corpus retrieved from Wikipedia. We also
propose an entity-aware self-attention mechanism that is an extension of the self-attention mechanism of the
transformer, and considers the types of tokens (words or entities) when computing attention scores. The proposed model
achieves impressive empirical performance on a wide range of entity-related tasks. In particular, it obtains
state-of-the-art results on five well-known datasets: Open Entity (entity typing), TACRED (relation classification),
CoNLL-2003 (named entity recognition), ReCoRD (cloze-style question answering), and SQuAD 1.1 (extractive question
answering).*
This model was contributed by [ikuyamada](https://huggingface.co/ikuyamada) and [nielsr](https://huggingface.co/nielsr). The original code can be found [here](https://github.com/studio-ousia/luke).
## Usage tips
- This implementation is the same as [`RobertaModel`] with the addition of entity embeddings as well
as an entity-aware self-attention mechanism, which improves performance on tasks involving reasoning about entities.
- LUKE treats entities as input tokens; therefore, it takes `entity_ids`, `entity_attention_mask`,
`entity_token_type_ids` and `entity_position_ids` as extra input. You can obtain those using
[`LukeTokenizer`].
- [`LukeTokenizer`] takes `entities` and `entity_spans` (character-based start and end
positions of the entities in the input text) as extra input. `entities` typically consist of [MASK] entities or
Wikipedia entities. The brief description when inputting these entities are as follows:
- *Inputting [MASK] entities to compute entity representations*: The [MASK] entity is used to mask entities to be
predicted during pretraining. When LUKE receives the [MASK] entity, it tries to predict the original entity by
gathering the information about the entity from the input text. Therefore, the [MASK] entity can be used to address
downstream tasks requiring the information of entities in text such as entity typing, relation classification, and
named entity recognition.
- *Inputting Wikipedia entities to compute knowledge-enhanced token representations*: LUKE learns rich information
(or knowledge) about Wikipedia entities during pretraining and stores the information in its entity embedding. By
using Wikipedia entities as input tokens, LUKE outputs token representations enriched by the information stored in
the embeddings of these entities. This is particularly effective for tasks requiring real-world knowledge, such as
question answering.
- There are three head models for the former use case:
- [`LukeForEntityClassification`], for tasks to classify a single entity in an input text such as
entity typing, e.g. the [Open Entity dataset](https://www.cs.utexas.edu/~eunsol/html_pages/open_entity.html).
This model places a linear head on top of the output entity representation.
- [`LukeForEntityPairClassification`], for tasks to classify the relationship between two entities
such as relation classification, e.g. the [TACRED dataset](https://nlp.stanford.edu/projects/tacred/). This
model places a linear head on top of the concatenated output representation of the pair of given entities.
- [`LukeForEntitySpanClassification`], for tasks to classify the sequence of entity spans, such as
named entity recognition (NER). This model places a linear head on top of the output entity representations. You
can address NER using this model by inputting all possible entity spans in the text to the model.
[`LukeTokenizer`] has a `task` argument, which enables you to easily create an input to these
head models by specifying `task="entity_classification"`, `task="entity_pair_classification"`, or
`task="entity_span_classification"`. Please refer to the example code of each head models.
Usage example:
```python
>>> from transformers import LukeTokenizer, LukeModel, LukeForEntityPairClassification
>>> model = LukeModel.from_pretrained("studio-ousia/luke-base")
>>> tokenizer = LukeTokenizer.from_pretrained("studio-ousia/luke-base")
# Example 1: Computing the contextualized entity representation corresponding to the entity mention "Beyoncé"
>>> text = "Beyoncé lives in Los Angeles."
>>> entity_spans = [(0, 7)] # character-based entity span corresponding to "Beyoncé"
>>> inputs = tokenizer(text, entity_spans=entity_spans, add_prefix_space=True, return_tensors="pt")
>>> outputs = model(**inputs)
>>> word_last_hidden_state = outputs.last_hidden_state
>>> entity_last_hidden_state = outputs.entity_last_hidden_state
# Example 2: Inputting Wikipedia entities to obtain enriched contextualized representations
>>> entities = [
... "Beyoncé",
... "Los Angeles",
... ] # Wikipedia entity titles corresponding to the entity mentions "Beyoncé" and "Los Angeles"
>>> entity_spans = [(0, 7), (17, 28)] # character-based entity spans corresponding to "Beyoncé" and "Los Angeles"
>>> inputs = tokenizer(text, entities=entities, entity_spans=entity_spans, add_prefix_space=True, return_tensors="pt")
>>> outputs = model(**inputs)
>>> word_last_hidden_state = outputs.last_hidden_state
>>> entity_last_hidden_state = outputs.entity_last_hidden_state
# Example 3: Classifying the relationship between two entities using LukeForEntityPairClassification head model
>>> model = LukeForEntityPairClassification.from_pretrained("studio-ousia/luke-large-finetuned-tacred")
>>> tokenizer = LukeTokenizer.from_pretrained("studio-ousia/luke-large-finetuned-tacred")
>>> entity_spans = [(0, 7), (17, 28)] # character-based entity spans corresponding to "Beyoncé" and "Los Angeles"
>>> inputs = tokenizer(text, entity_spans=entity_spans, return_tensors="pt")
>>> outputs = model(**inputs)
>>> logits = outputs.logits
>>> predicted_class_idx = int(logits[0].argmax())
>>> print("Predicted class:", model.config.id2label[predicted_class_idx])
```
## Resources
- [A demo notebook on how to fine-tune [`LukeForEntityPairClassification`] for relation classification](https://github.com/NielsRogge/Transformers-Tutorials/tree/master/LUKE)
- [Notebooks showcasing how you to reproduce the results as reported in the paper with the HuggingFace implementation of LUKE](https://github.com/studio-ousia/luke/tree/master/notebooks)
- [Text classification task guide](../tasks/sequence_classification)
- [Token classification task guide](../tasks/token_classification)
- [Question answering task guide](../tasks/question_answering)
- [Masked language modeling task guide](../tasks/masked_language_modeling)
- [Multiple choice task guide](../tasks/multiple_choice)
## LukeConfig
[[autodoc]] LukeConfig
## LukeTokenizer
[[autodoc]] LukeTokenizer
- __call__
- save_vocabulary
## LukeModel
[[autodoc]] LukeModel
- forward
## LukeForMaskedLM
[[autodoc]] LukeForMaskedLM
- forward
## LukeForEntityClassification
[[autodoc]] LukeForEntityClassification
- forward
## LukeForEntityPairClassification
[[autodoc]] LukeForEntityPairClassification
- forward
## LukeForEntitySpanClassification
[[autodoc]] LukeForEntitySpanClassification
- forward
## LukeForSequenceClassification
[[autodoc]] LukeForSequenceClassification
- forward
## LukeForMultipleChoice
[[autodoc]] LukeForMultipleChoice
- forward
## LukeForTokenClassification
[[autodoc]] LukeForTokenClassification
- forward
## LukeForQuestionAnswering
[[autodoc]] LukeForQuestionAnswering
- forward
| transformers/docs/source/en/model_doc/luke.md/0 | {
"file_path": "transformers/docs/source/en/model_doc/luke.md",
"repo_id": "transformers",
"token_count": 2521
} | 246 |
<!--Copyright 2023 Mistral AI and The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Mistral
## Overview
Mistral was introduced in the [this blogpost](https://mistral.ai/news/announcing-mistral-7b/) by Albert Jiang, Alexandre Sablayrolles, Arthur Mensch, Chris Bamford, Devendra Singh Chaplot, Diego de las Casas, Florian Bressand, Gianna Lengyel, Guillaume Lample, Lélio Renard Lavaud, Lucile Saulnier, Marie-Anne Lachaux, Pierre Stock, Teven Le Scao, Thibaut Lavril, Thomas Wang, Timothée Lacroix, William El Sayed.
The introduction of the blog post says:
*Mistral AI team is proud to release Mistral 7B, the most powerful language model for its size to date.*
Mistral-7B is the first large language model (LLM) released by [mistral.ai](https://mistral.ai/).
### Architectural details
Mistral-7B is a decoder-only Transformer with the following architectural choices:
- Sliding Window Attention - Trained with 8k context length and fixed cache size, with a theoretical attention span of 128K tokens
- GQA (Grouped Query Attention) - allowing faster inference and lower cache size.
- Byte-fallback BPE tokenizer - ensures that characters are never mapped to out of vocabulary tokens.
For more details refer to the [release blog post](https://mistral.ai/news/announcing-mistral-7b/).
### License
`Mistral-7B` is released under the Apache 2.0 license.
## Usage tips
The Mistral team has released 3 checkpoints:
- a base model, [Mistral-7B-v0.1](https://huggingface.co/mistralai/Mistral-7B-v0.1), which has been pre-trained to predict the next token on internet-scale data.
- an instruction tuned model, [Mistral-7B-Instruct-v0.1](https://huggingface.co/mistralai/Mistral-7B-Instruct-v0.1), which is the base model optimized for chat purposes using supervised fine-tuning (SFT) and direct preference optimization (DPO).
- an improved instruction tuned model, [Mistral-7B-Instruct-v0.2](https://huggingface.co/mistralai/Mistral-7B-Instruct-v0.2), which improves upon v1.
The base model can be used as follows:
```python
>>> from transformers import AutoModelForCausalLM, AutoTokenizer
>>> model = AutoModelForCausalLM.from_pretrained("mistralai/Mistral-7B-v0.1", device_map="auto")
>>> tokenizer = AutoTokenizer.from_pretrained("mistralai/Mistral-7B-v0.1")
>>> prompt = "My favourite condiment is"
>>> model_inputs = tokenizer([prompt], return_tensors="pt").to("cuda")
>>> model.to(device)
>>> generated_ids = model.generate(**model_inputs, max_new_tokens=100, do_sample=True)
>>> tokenizer.batch_decode(generated_ids)[0]
"My favourite condiment is to ..."
```
The instruction tuned model can be used as follows:
```python
>>> from transformers import AutoModelForCausalLM, AutoTokenizer
>>> model = AutoModelForCausalLM.from_pretrained("mistralai/Mistral-7B-Instruct-v0.2", device_map="auto")
>>> tokenizer = AutoTokenizer.from_pretrained("mistralai/Mistral-7B-Instruct-v0.2")
>>> messages = [
... {"role": "user", "content": "What is your favourite condiment?"},
... {"role": "assistant", "content": "Well, I'm quite partial to a good squeeze of fresh lemon juice. It adds just the right amount of zesty flavour to whatever I'm cooking up in the kitchen!"},
... {"role": "user", "content": "Do you have mayonnaise recipes?"}
... ]
>>> model_inputs = tokenizer.apply_chat_template(messages, return_tensors="pt").to("cuda")
>>> generated_ids = model.generate(model_inputs, max_new_tokens=100, do_sample=True)
>>> tokenizer.batch_decode(generated_ids)[0]
"Mayonnaise can be made as follows: (...)"
```
As can be seen, the instruction-tuned model requires a [chat template](../chat_templating) to be applied to make sure the inputs are prepared in the right format.
## Speeding up Mistral by using Flash Attention
The code snippets above showcase inference without any optimization tricks. However, one can drastically speed up the model by leveraging [Flash Attention](../perf_train_gpu_one.md#flash-attention-2), which is a faster implementation of the attention mechanism used inside the model.
First, make sure to install the latest version of Flash Attention 2 to include the sliding window attention feature.
```bash
pip install -U flash-attn --no-build-isolation
```
Make also sure that you have a hardware that is compatible with Flash-Attention 2. Read more about it in the official documentation of the [flash attention repository](https://github.com/Dao-AILab/flash-attention). Make also sure to load your model in half-precision (e.g. `torch.float16`)
To load and run a model using Flash Attention-2, refer to the snippet below:
```python
>>> import torch
>>> from transformers import AutoModelForCausalLM, AutoTokenizer
>>> model = AutoModelForCausalLM.from_pretrained("mistralai/Mistral-7B-v0.1", torch_dtype=torch.float16, attn_implementation="flash_attention_2", device_map="auto")
>>> tokenizer = AutoTokenizer.from_pretrained("mistralai/Mistral-7B-v0.1")
>>> prompt = "My favourite condiment is"
>>> model_inputs = tokenizer([prompt], return_tensors="pt").to("cuda")
>>> model.to(device)
>>> generated_ids = model.generate(**model_inputs, max_new_tokens=100, do_sample=True)
>>> tokenizer.batch_decode(generated_ids)[0]
"My favourite condiment is to (...)"
```
### Expected speedups
Below is a expected speedup diagram that compares pure inference time between the native implementation in transformers using `mistralai/Mistral-7B-v0.1` checkpoint and the Flash Attention 2 version of the model.
<div style="text-align: center">
<img src="https://huggingface.co/datasets/ybelkada/documentation-images/resolve/main/mistral-7b-inference-large-seqlen.png">
</div>
### Sliding window Attention
The current implementation supports the sliding window attention mechanism and memory efficient cache management.
To enable sliding window attention, just make sure to have a `flash-attn` version that is compatible with sliding window attention (`>=2.3.0`).
The Flash Attention-2 model uses also a more memory efficient cache slicing mechanism - as recommended per the official implementation of Mistral model that use rolling cache mechanism we keep the cache size fixed (`self.config.sliding_window`), support batched generation only for `padding_side="left"` and use the absolute position of the current token to compute the positional embedding.
## Shrinking down Mistral using quantization
As the Mistral model has 7 billion parameters, that would require about 14GB of GPU RAM in half precision (float16), since each parameter is stored in 2 bytes. However, one can shrink down the size of the model using [quantization](../quantization.md). If the model is quantized to 4 bits (or half a byte per parameter),that requires only about 3.5GB of RAM.
Quantizing a model is as simple as passing a `quantization_config` to the model. Below, we'll leverage the BitsAndyBytes quantization (but refer to [this page](../quantization.md) for other quantization methods):
```python
>>> import torch
>>> from transformers import AutoModelForCausalLM, AutoTokenizer, BitsAndBytesConfig
>>> # specify how to quantize the model
>>> quantization_config = BitsAndBytesConfig(
... load_in_4bit=True,
... bnb_4bit_quant_type="nf4",
... bnb_4bit_compute_dtype="torch.float16",
... )
>>> model = AutoModelForCausalLM.from_pretrained("mistralai/Mistral-7B-Instruct-v0.2", quantization_config=True, device_map="auto")
>>> tokenizer = AutoTokenizer.from_pretrained("mistralai/Mistral-7B-Instruct-v0.2")
>>> prompt = "My favourite condiment is"
>>> messages = [
... {"role": "user", "content": "What is your favourite condiment?"},
... {"role": "assistant", "content": "Well, I'm quite partial to a good squeeze of fresh lemon juice. It adds just the right amount of zesty flavour to whatever I'm cooking up in the kitchen!"},
... {"role": "user", "content": "Do you have mayonnaise recipes?"}
... ]
>>> model_inputs = tokenizer.apply_chat_template(messages, return_tensors="pt").to("cuda")
>>> generated_ids = model.generate(model_inputs, max_new_tokens=100, do_sample=True)
>>> tokenizer.batch_decode(generated_ids)[0]
"The expected output"
```
This model was contributed by [Younes Belkada](https://huggingface.co/ybelkada) and [Arthur Zucker](https://huggingface.co/ArthurZ) .
The original code can be found [here](https://github.com/mistralai/mistral-src).
## Resources
A list of official Hugging Face and community (indicated by 🌎) resources to help you get started with Mistral. If you're interested in submitting a resource to be included here, please feel free to open a Pull Request and we'll review it! The resource should ideally demonstrate something new instead of duplicating an existing resource.
<PipelineTag pipeline="text-generation"/>
- A demo notebook to perform supervised fine-tuning (SFT) of Mistral-7B can be found [here](https://github.com/NielsRogge/Transformers-Tutorials/blob/master/Mistral/Supervised_fine_tuning_(SFT)_of_an_LLM_using_Hugging_Face_tooling.ipynb). 🌎
- A [blog post](https://www.philschmid.de/fine-tune-llms-in-2024-with-trl) on how to fine-tune LLMs in 2024 using Hugging Face tooling. 🌎
- The [Alignment Handbook](https://github.com/huggingface/alignment-handbook) by Hugging Face includes scripts and recipes to perform supervised fine-tuning (SFT) and direct preference optimization with Mistral-7B. This includes scripts for full fine-tuning, QLoRa on a single GPU as well as multi-GPU fine-tuning.
- [Causal language modeling task guide](../tasks/language_modeling)
## MistralConfig
[[autodoc]] MistralConfig
## MistralModel
[[autodoc]] MistralModel
- forward
## MistralForCausalLM
[[autodoc]] MistralForCausalLM
- forward
## MistralForSequenceClassification
[[autodoc]] MistralForSequenceClassification
- forward
## FlaxMistralModel
[[autodoc]] FlaxMistralModel
- __call__
## FlaxMistralForCausalLM
[[autodoc]] FlaxMistralForCausalLM
- __call__ | transformers/docs/source/en/model_doc/mistral.md/0 | {
"file_path": "transformers/docs/source/en/model_doc/mistral.md",
"repo_id": "transformers",
"token_count": 3168
} | 247 |
<!--Copyright 2022 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Neighborhood Attention Transformer
## Overview
NAT was proposed in [Neighborhood Attention Transformer](https://arxiv.org/abs/2204.07143)
by Ali Hassani, Steven Walton, Jiachen Li, Shen Li, and Humphrey Shi.
It is a hierarchical vision transformer based on Neighborhood Attention, a sliding-window self attention pattern.
The abstract from the paper is the following:
*We present Neighborhood Attention (NA), the first efficient and scalable sliding-window attention mechanism for vision.
NA is a pixel-wise operation, localizing self attention (SA) to the nearest neighboring pixels, and therefore enjoys a
linear time and space complexity compared to the quadratic complexity of SA. The sliding-window pattern allows NA's
receptive field to grow without needing extra pixel shifts, and preserves translational equivariance, unlike
Swin Transformer's Window Self Attention (WSA). We develop NATTEN (Neighborhood Attention Extension), a Python package
with efficient C++ and CUDA kernels, which allows NA to run up to 40% faster than Swin's WSA while using up to 25% less
memory. We further present Neighborhood Attention Transformer (NAT), a new hierarchical transformer design based on NA
that boosts image classification and downstream vision performance. Experimental results on NAT are competitive;
NAT-Tiny reaches 83.2% top-1 accuracy on ImageNet, 51.4% mAP on MS-COCO and 48.4% mIoU on ADE20K, which is 1.9%
ImageNet accuracy, 1.0% COCO mAP, and 2.6% ADE20K mIoU improvement over a Swin model with similar size. *
<img
src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/neighborhood-attention-pattern.jpg"
alt="drawing" width="600"/>
<small> Neighborhood Attention compared to other attention patterns.
Taken from the <a href="https://arxiv.org/abs/2204.07143">original paper</a>.</small>
This model was contributed by [Ali Hassani](https://huggingface.co/alihassanijr).
The original code can be found [here](https://github.com/SHI-Labs/Neighborhood-Attention-Transformer).
## Usage tips
- One can use the [`AutoImageProcessor`] API to prepare images for the model.
- NAT can be used as a *backbone*. When `output_hidden_states = True`,
it will output both `hidden_states` and `reshaped_hidden_states`.
The `reshaped_hidden_states` have a shape of `(batch, num_channels, height, width)` rather than
`(batch_size, height, width, num_channels)`.
Notes:
- NAT depends on [NATTEN](https://github.com/SHI-Labs/NATTEN/)'s implementation of Neighborhood Attention.
You can install it with pre-built wheels for Linux by referring to [shi-labs.com/natten](https://shi-labs.com/natten),
or build on your system by running `pip install natten`.
Note that the latter will likely take time to compile. NATTEN does not support Windows devices yet.
- Patch size of 4 is only supported at the moment.
## Resources
A list of official Hugging Face and community (indicated by 🌎) resources to help you get started with NAT.
<PipelineTag pipeline="image-classification"/>
- [`NatForImageClassification`] is supported by this [example script](https://github.com/huggingface/transformers/tree/main/examples/pytorch/image-classification) and [notebook](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/image_classification.ipynb).
- See also: [Image classification task guide](../tasks/image_classification)
If you're interested in submitting a resource to be included here, please feel free to open a Pull Request and we'll review it! The resource should ideally demonstrate something new instead of duplicating an existing resource.
## NatConfig
[[autodoc]] NatConfig
## NatModel
[[autodoc]] NatModel
- forward
## NatForImageClassification
[[autodoc]] NatForImageClassification
- forward
| transformers/docs/source/en/model_doc/nat.md/0 | {
"file_path": "transformers/docs/source/en/model_doc/nat.md",
"repo_id": "transformers",
"token_count": 1229
} | 248 |
<!--Copyright 2021 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Perceiver
## Overview
The Perceiver IO model was proposed in [Perceiver IO: A General Architecture for Structured Inputs &
Outputs](https://arxiv.org/abs/2107.14795) by Andrew Jaegle, Sebastian Borgeaud, Jean-Baptiste Alayrac, Carl Doersch,
Catalin Ionescu, David Ding, Skanda Koppula, Daniel Zoran, Andrew Brock, Evan Shelhamer, Olivier Hénaff, Matthew M.
Botvinick, Andrew Zisserman, Oriol Vinyals, João Carreira.
Perceiver IO is a generalization of [Perceiver](https://arxiv.org/abs/2103.03206) to handle arbitrary outputs in
addition to arbitrary inputs. The original Perceiver only produced a single classification label. In addition to
classification labels, Perceiver IO can produce (for example) language, optical flow, and multimodal videos with audio.
This is done using the same building blocks as the original Perceiver. The computational complexity of Perceiver IO is
linear in the input and output size and the bulk of the processing occurs in the latent space, allowing us to process
inputs and outputs that are much larger than can be handled by standard Transformers. This means, for example,
Perceiver IO can do BERT-style masked language modeling directly using bytes instead of tokenized inputs.
The abstract from the paper is the following:
*The recently-proposed Perceiver model obtains good results on several domains (images, audio, multimodal, point
clouds) while scaling linearly in compute and memory with the input size. While the Perceiver supports many kinds of
inputs, it can only produce very simple outputs such as class scores. Perceiver IO overcomes this limitation without
sacrificing the original's appealing properties by learning to flexibly query the model's latent space to produce
outputs of arbitrary size and semantics. Perceiver IO still decouples model depth from data size and still scales
linearly with data size, but now with respect to both input and output sizes. The full Perceiver IO model achieves
strong results on tasks with highly structured output spaces, such as natural language and visual understanding,
StarCraft II, and multi-task and multi-modal domains. As highlights, Perceiver IO matches a Transformer-based BERT
baseline on the GLUE language benchmark without the need for input tokenization and achieves state-of-the-art
performance on Sintel optical flow estimation.*
Here's a TLDR explaining how Perceiver works:
The main problem with the self-attention mechanism of the Transformer is that the time and memory requirements scale
quadratically with the sequence length. Hence, models like BERT and RoBERTa are limited to a max sequence length of 512
tokens. Perceiver aims to solve this issue by, instead of performing self-attention on the inputs, perform it on a set
of latent variables, and only use the inputs for cross-attention. In this way, the time and memory requirements don't
depend on the length of the inputs anymore, as one uses a fixed amount of latent variables, like 256 or 512. These are
randomly initialized, after which they are trained end-to-end using backpropagation.
Internally, [`PerceiverModel`] will create the latents, which is a tensor of shape `(batch_size, num_latents,
d_latents)`. One must provide `inputs` (which could be text, images, audio, you name it!) to the model, which it will
use to perform cross-attention with the latents. The output of the Perceiver encoder is a tensor of the same shape. One
can then, similar to BERT, convert the last hidden states of the latents to classification logits by averaging along
the sequence dimension, and placing a linear layer on top of that to project the `d_latents` to `num_labels`.
This was the idea of the original Perceiver paper. However, it could only output classification logits. In a follow-up
work, PerceiverIO, they generalized it to let the model also produce outputs of arbitrary size. How, you might ask? The
idea is actually relatively simple: one defines outputs of an arbitrary size, and then applies cross-attention with the
last hidden states of the latents, using the outputs as queries, and the latents as keys and values.
So let's say one wants to perform masked language modeling (BERT-style) with the Perceiver. As the Perceiver's input
length will not have an impact on the computation time of the self-attention layers, one can provide raw bytes,
providing `inputs` of length 2048 to the model. If one now masks out certain of these 2048 tokens, one can define the
`outputs` as being of shape: `(batch_size, 2048, 768)`. Next, one performs cross-attention with the final hidden states
of the latents to update the `outputs` tensor. After cross-attention, one still has a tensor of shape `(batch_size,
2048, 768)`. One can then place a regular language modeling head on top, to project the last dimension to the
vocabulary size of the model, i.e. creating logits of shape `(batch_size, 2048, 262)` (as Perceiver uses a vocabulary
size of 262 byte IDs).
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/perceiver_architecture.jpg"
alt="drawing" width="600"/>
<small> Perceiver IO architecture. Taken from the <a href="https://arxiv.org/abs/2105.15203">original paper</a> </small>
This model was contributed by [nielsr](https://huggingface.co/nielsr). The original code can be found
[here](https://github.com/deepmind/deepmind-research/tree/master/perceiver).
<Tip warning={true}>
Perceiver does **not** work with `torch.nn.DataParallel` due to a bug in PyTorch, see [issue #36035](https://github.com/pytorch/pytorch/issues/36035)
</Tip>
## Resources
- The quickest way to get started with the Perceiver is by checking the [tutorial
notebooks](https://github.com/NielsRogge/Transformers-Tutorials/tree/master/Perceiver).
- Refer to the [blog post](https://huggingface.co/blog/perceiver) if you want to fully understand how the model works and
is implemented in the library. Note that the models available in the library only showcase some examples of what you can do
with the Perceiver. There are many more use cases, including question answering, named-entity recognition, object detection,
audio classification, video classification, etc.
- [Text classification task guide](../tasks/sequence_classification)
- [Masked language modeling task guide](../tasks/masked_language_modeling)
- [Image classification task guide](../tasks/image_classification)
## Perceiver specific outputs
[[autodoc]] models.perceiver.modeling_perceiver.PerceiverModelOutput
[[autodoc]] models.perceiver.modeling_perceiver.PerceiverDecoderOutput
[[autodoc]] models.perceiver.modeling_perceiver.PerceiverMaskedLMOutput
[[autodoc]] models.perceiver.modeling_perceiver.PerceiverClassifierOutput
## PerceiverConfig
[[autodoc]] PerceiverConfig
## PerceiverTokenizer
[[autodoc]] PerceiverTokenizer
- __call__
## PerceiverFeatureExtractor
[[autodoc]] PerceiverFeatureExtractor
- __call__
## PerceiverImageProcessor
[[autodoc]] PerceiverImageProcessor
- preprocess
## PerceiverTextPreprocessor
[[autodoc]] models.perceiver.modeling_perceiver.PerceiverTextPreprocessor
## PerceiverImagePreprocessor
[[autodoc]] models.perceiver.modeling_perceiver.PerceiverImagePreprocessor
## PerceiverOneHotPreprocessor
[[autodoc]] models.perceiver.modeling_perceiver.PerceiverOneHotPreprocessor
## PerceiverAudioPreprocessor
[[autodoc]] models.perceiver.modeling_perceiver.PerceiverAudioPreprocessor
## PerceiverMultimodalPreprocessor
[[autodoc]] models.perceiver.modeling_perceiver.PerceiverMultimodalPreprocessor
## PerceiverProjectionDecoder
[[autodoc]] models.perceiver.modeling_perceiver.PerceiverProjectionDecoder
## PerceiverBasicDecoder
[[autodoc]] models.perceiver.modeling_perceiver.PerceiverBasicDecoder
## PerceiverClassificationDecoder
[[autodoc]] models.perceiver.modeling_perceiver.PerceiverClassificationDecoder
## PerceiverOpticalFlowDecoder
[[autodoc]] models.perceiver.modeling_perceiver.PerceiverOpticalFlowDecoder
## PerceiverBasicVideoAutoencodingDecoder
[[autodoc]] models.perceiver.modeling_perceiver.PerceiverBasicVideoAutoencodingDecoder
## PerceiverMultimodalDecoder
[[autodoc]] models.perceiver.modeling_perceiver.PerceiverMultimodalDecoder
## PerceiverProjectionPostprocessor
[[autodoc]] models.perceiver.modeling_perceiver.PerceiverProjectionPostprocessor
## PerceiverAudioPostprocessor
[[autodoc]] models.perceiver.modeling_perceiver.PerceiverAudioPostprocessor
## PerceiverClassificationPostprocessor
[[autodoc]] models.perceiver.modeling_perceiver.PerceiverClassificationPostprocessor
## PerceiverMultimodalPostprocessor
[[autodoc]] models.perceiver.modeling_perceiver.PerceiverMultimodalPostprocessor
## PerceiverModel
[[autodoc]] PerceiverModel
- forward
## PerceiverForMaskedLM
[[autodoc]] PerceiverForMaskedLM
- forward
## PerceiverForSequenceClassification
[[autodoc]] PerceiverForSequenceClassification
- forward
## PerceiverForImageClassificationLearned
[[autodoc]] PerceiverForImageClassificationLearned
- forward
## PerceiverForImageClassificationFourier
[[autodoc]] PerceiverForImageClassificationFourier
- forward
## PerceiverForImageClassificationConvProcessing
[[autodoc]] PerceiverForImageClassificationConvProcessing
- forward
## PerceiverForOpticalFlow
[[autodoc]] PerceiverForOpticalFlow
- forward
## PerceiverForMultimodalAutoencoding
[[autodoc]] PerceiverForMultimodalAutoencoding
- forward
| transformers/docs/source/en/model_doc/perceiver.md/0 | {
"file_path": "transformers/docs/source/en/model_doc/perceiver.md",
"repo_id": "transformers",
"token_count": 2762
} | 249 |
<!--Copyright 2023 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# SigLIP
## Overview
The SigLIP model was proposed in [Sigmoid Loss for Language Image Pre-Training](https://arxiv.org/abs/2303.15343) by Xiaohua Zhai, Basil Mustafa, Alexander Kolesnikov, Lucas Beyer. SigLIP proposes to replace the loss function used in [CLIP](clip) by a simple pairwise sigmoid loss. This results in better performance in terms of zero-shot classification accuracy on ImageNet.
The abstract from the paper is the following:
*We propose a simple pairwise Sigmoid loss for Language-Image Pre-training (SigLIP). Unlike standard contrastive learning with softmax normalization, the sigmoid loss operates solely on image-text pairs and does not require a global view of the pairwise similarities for normalization. The sigmoid loss simultaneously allows further scaling up the batch size, while also performing better at smaller batch sizes. Combined with Locked-image Tuning, with only four TPUv4 chips, we train a SigLiT model that achieves 84.5% ImageNet zero-shot accuracy in two days. The disentanglement of the batch size from the loss further allows us to study the impact of examples vs pairs and negative to positive ratio. Finally, we push the batch size to the extreme, up to one million, and find that the benefits of growing batch size quickly diminish, with a more reasonable batch size of 32k being sufficient.*
## Usage tips
- Usage of SigLIP is similar to [CLIP](clip). The main difference is the training loss, which does not require a global view of all the pairwise similarities of images and texts within a batch. One needs to apply the sigmoid activation function to the logits, rather than the softmax.
- Training is not yet supported. If you want to fine-tune SigLIP or train from scratch, refer to the loss function from [OpenCLIP](https://github.com/mlfoundations/open_clip/blob/73ad04ae7fb93ede1c02dc9040a828634cb1edf1/src/open_clip/loss.py#L307), which leverages various `torch.distributed` utilities.
- When using the standalone [`SiglipTokenizer`] or [`SiglipProcessor`], make sure to pass `padding="max_length"` as that's how the model was trained.
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/transformers/model_doc/siglip_table.jpeg"
alt="drawing" width="600"/>
<small> SigLIP evaluation results compared to CLIP. Taken from the <a href="https://arxiv.org/abs/2303.15343">original paper</a>.</small>
This model was contributed by [nielsr](https://huggingface.co/nielsr).
The original code can be found [here](https://github.com/google-research/big_vision/tree/main).
## Usage example
There are 2 main ways to use SigLIP: either using the pipeline API, which abstracts away all the complexity for you, or by using the `SiglipModel` class yourself.
### Pipeline API
The pipeline allows to use the model in a few lines of code:
```python
>>> from transformers import pipeline
>>> from PIL import Image
>>> import requests
>>> # load pipe
>>> image_classifier = pipeline(task="zero-shot-image-classification", model="google/siglip-base-patch16-224")
>>> # load image
>>> url = 'http://images.cocodataset.org/val2017/000000039769.jpg'
>>> image = Image.open(requests.get(url, stream=True).raw)
>>> # inference
>>> outputs = image_classifier(image, candidate_labels=["2 cats", "a plane", "a remote"])
>>> outputs = [{"score": round(output["score"], 4), "label": output["label"] } for output in outputs]
>>> print(outputs)
[{'score': 0.1979, 'label': '2 cats'}, {'score': 0.0, 'label': 'a remote'}, {'score': 0.0, 'label': 'a plane'}]
```
### Using the model yourself
If you want to do the pre- and postprocessing yourself, here's how to do that:
```python
>>> from PIL import Image
>>> import requests
>>> from transformers import AutoProcessor, AutoModel
>>> import torch
>>> model = AutoModel.from_pretrained("google/siglip-base-patch16-224")
>>> processor = AutoProcessor.from_pretrained("google/siglip-base-patch16-224")
>>> url = "http://images.cocodataset.org/val2017/000000039769.jpg"
>>> image = Image.open(requests.get(url, stream=True).raw)
>>> texts = ["a photo of 2 cats", "a photo of 2 dogs"]
>>> # important: we pass `padding=max_length` since the model was trained with this
>>> inputs = processor(text=texts, images=image, padding="max_length", return_tensors="pt")
>>> with torch.no_grad():
... outputs = model(**inputs)
>>> logits_per_image = outputs.logits_per_image
>>> probs = torch.sigmoid(logits_per_image) # these are the probabilities
>>> print(f"{probs[0][0]:.1%} that image 0 is '{texts[0]}'")
31.9% that image 0 is 'a photo of 2 cats'
```
## Resources
A list of official Hugging Face and community (indicated by 🌎) resources to help you get started with SigLIP.
- [Zero-shot image classification task guide](../tasks/zero_shot_image_classification_md)
- Demo notebooks for SigLIP can be found [here](https://github.com/NielsRogge/Transformers-Tutorials/tree/master/SigLIP). 🌎
If you're interested in submitting a resource to be included here, please feel free to open a Pull Request and we'll review it! The resource should ideally demonstrate something new instead of duplicating an existing resource.
## SiglipConfig
[[autodoc]] SiglipConfig
- from_text_vision_configs
## SiglipTextConfig
[[autodoc]] SiglipTextConfig
## SiglipVisionConfig
[[autodoc]] SiglipVisionConfig
## SiglipTokenizer
[[autodoc]] SiglipTokenizer
- build_inputs_with_special_tokens
- get_special_tokens_mask
- create_token_type_ids_from_sequences
- save_vocabulary
## SiglipImageProcessor
[[autodoc]] SiglipImageProcessor
- preprocess
## SiglipProcessor
[[autodoc]] SiglipProcessor
## SiglipModel
[[autodoc]] SiglipModel
- forward
- get_text_features
- get_image_features
## SiglipTextModel
[[autodoc]] SiglipTextModel
- forward
## SiglipVisionModel
[[autodoc]] SiglipVisionModel
- forward
## SiglipForImageClassification
[[autodoc]] SiglipForImageClassification
- forward | transformers/docs/source/en/model_doc/siglip.md/0 | {
"file_path": "transformers/docs/source/en/model_doc/siglip.md",
"repo_id": "transformers",
"token_count": 1992
} | 250 |
<!--Copyright 2021 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# T5v1.1
## Overview
T5v1.1 was released in the [google-research/text-to-text-transfer-transformer](https://github.com/google-research/text-to-text-transfer-transformer/blob/main/released_checkpoints.md#t511)
repository by Colin Raffel et al. It's an improved version of the original T5 model.
This model was contributed by [patrickvonplaten](https://huggingface.co/patrickvonplaten). The original code can be
found [here](https://github.com/google-research/text-to-text-transfer-transformer/blob/main/released_checkpoints.md#t511).
## Usage tips
One can directly plug in the weights of T5v1.1 into a T5 model, like so:
```python
>>> from transformers import T5ForConditionalGeneration
>>> model = T5ForConditionalGeneration.from_pretrained("google/t5-v1_1-base")
```
T5 Version 1.1 includes the following improvements compared to the original T5 model:
- GEGLU activation in the feed-forward hidden layer, rather than ReLU. See [this paper](https://arxiv.org/abs/2002.05202).
- Dropout was turned off in pre-training (quality win). Dropout should be re-enabled during fine-tuning.
- Pre-trained on C4 only without mixing in the downstream tasks.
- No parameter sharing between the embedding and classifier layer.
- "xl" and "xxl" replace "3B" and "11B". The model shapes are a bit different - larger `d_model` and smaller
`num_heads` and `d_ff`.
Note: T5 Version 1.1 was only pre-trained on [C4](https://huggingface.co/datasets/c4) excluding any supervised
training. Therefore, this model has to be fine-tuned before it is usable on a downstream task, unlike the original T5
model. Since t5v1.1 was pre-trained unsupervisedly, there's no real advantage to using a task prefix during single-task
fine-tuning. If you are doing multi-task fine-tuning, you should use a prefix.
Google has released the following variants:
- [google/t5-v1_1-small](https://huggingface.co/google/t5-v1_1-small)
- [google/t5-v1_1-base](https://huggingface.co/google/t5-v1_1-base)
- [google/t5-v1_1-large](https://huggingface.co/google/t5-v1_1-large)
- [google/t5-v1_1-xl](https://huggingface.co/google/t5-v1_1-xl)
- [google/t5-v1_1-xxl](https://huggingface.co/google/t5-v1_1-xxl).
<Tip>
Refer to [T5's documentation page](t5) for all API reference, tips, code examples and notebooks.
</Tip> | transformers/docs/source/en/model_doc/t5v1.1.md/0 | {
"file_path": "transformers/docs/source/en/model_doc/t5v1.1.md",
"repo_id": "transformers",
"token_count": 967
} | 251 |
<!--Copyright 2023 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
-->
# Video Vision Transformer (ViViT)
## Overview
The Vivit model was proposed in [ViViT: A Video Vision Transformer](https://arxiv.org/abs/2103.15691) by Anurag Arnab, Mostafa Dehghani, Georg Heigold, Chen Sun, Mario Lučić, Cordelia Schmid.
The paper proposes one of the first successful pure-transformer based set of models for video understanding.
The abstract from the paper is the following:
*We present pure-transformer based models for video classification, drawing upon the recent success of such models in image classification. Our model extracts spatio-temporal tokens from the input video, which are then encoded by a series of transformer layers. In order to handle the long sequences of tokens encountered in video, we propose several, efficient variants of our model which factorise the spatial- and temporal-dimensions of the input. Although transformer-based models are known to only be effective when large training datasets are available, we show how we can effectively regularise the model during training and leverage pretrained image models to be able to train on comparatively small datasets. We conduct thorough ablation studies, and achieve state-of-the-art results on multiple video classification benchmarks including Kinetics 400 and 600, Epic Kitchens, Something-Something v2 and Moments in Time, outperforming prior methods based on deep 3D convolutional networks.*
This model was contributed by [jegormeister](https://huggingface.co/jegormeister). The original code (written in JAX) can be found [here](https://github.com/google-research/scenic/tree/main/scenic/projects/vivit).
## VivitConfig
[[autodoc]] VivitConfig
## VivitImageProcessor
[[autodoc]] VivitImageProcessor
- preprocess
## VivitModel
[[autodoc]] VivitModel
- forward
## VivitForVideoClassification
[[autodoc]] transformers.VivitForVideoClassification
- forward
| transformers/docs/source/en/model_doc/vivit.md/0 | {
"file_path": "transformers/docs/source/en/model_doc/vivit.md",
"repo_id": "transformers",
"token_count": 618
} | 252 |
<!--Copyright 2021 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# XLSR-Wav2Vec2
## Overview
The XLSR-Wav2Vec2 model was proposed in [Unsupervised Cross-Lingual Representation Learning For Speech Recognition](https://arxiv.org/abs/2006.13979) by Alexis Conneau, Alexei Baevski, Ronan Collobert, Abdelrahman Mohamed, Michael
Auli.
The abstract from the paper is the following:
*This paper presents XLSR which learns cross-lingual speech representations by pretraining a single model from the raw
waveform of speech in multiple languages. We build on wav2vec 2.0 which is trained by solving a contrastive task over
masked latent speech representations and jointly learns a quantization of the latents shared across languages. The
resulting model is fine-tuned on labeled data and experiments show that cross-lingual pretraining significantly
outperforms monolingual pretraining. On the CommonVoice benchmark, XLSR shows a relative phoneme error rate reduction
of 72% compared to the best known results. On BABEL, our approach improves word error rate by 16% relative compared to
a comparable system. Our approach enables a single multilingual speech recognition model which is competitive to strong
individual models. Analysis shows that the latent discrete speech representations are shared across languages with
increased sharing for related languages. We hope to catalyze research in low-resource speech understanding by releasing
XLSR-53, a large model pretrained in 53 languages.*
The original code can be found [here](https://github.com/pytorch/fairseq/tree/master/fairseq/models/wav2vec).
## Usage tips
- XLSR-Wav2Vec2 is a speech model that accepts a float array corresponding to the raw waveform of the speech signal.
- XLSR-Wav2Vec2 model was trained using connectionist temporal classification (CTC) so the model output has to be
decoded using [`Wav2Vec2CTCTokenizer`].
<Tip>
XLSR-Wav2Vec2's architecture is based on the Wav2Vec2 model, so one can refer to [Wav2Vec2's documentation page](wav2vec2).
</Tip>
| transformers/docs/source/en/model_doc/xlsr_wav2vec2.md/0 | {
"file_path": "transformers/docs/source/en/model_doc/xlsr_wav2vec2.md",
"repo_id": "transformers",
"token_count": 699
} | 253 |
<!--Copyright 2022 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Efficient Training on Multiple CPUs
When training on a single CPU is too slow, we can use multiple CPUs. This guide focuses on PyTorch-based DDP enabling
distributed CPU training efficiently on [bare metal](#usage-in-trainer) and [Kubernetes](#usage-with-kubernetes).
## Intel® oneCCL Bindings for PyTorch
[Intel® oneCCL](https://github.com/oneapi-src/oneCCL) (collective communications library) is a library for efficient distributed deep learning training implementing such collectives like allreduce, allgather, alltoall. For more information on oneCCL, please refer to the [oneCCL documentation](https://spec.oneapi.com/versions/latest/elements/oneCCL/source/index.html) and [oneCCL specification](https://spec.oneapi.com/versions/latest/elements/oneCCL/source/index.html).
Module `oneccl_bindings_for_pytorch` (`torch_ccl` before version 1.12) implements PyTorch C10D ProcessGroup API and can be dynamically loaded as external ProcessGroup and only works on Linux platform now
Check more detailed information for [oneccl_bind_pt](https://github.com/intel/torch-ccl).
### Intel® oneCCL Bindings for PyTorch installation
Wheel files are available for the following Python versions:
| Extension Version | Python 3.6 | Python 3.7 | Python 3.8 | Python 3.9 | Python 3.10 |
| :---------------: | :--------: | :--------: | :--------: | :--------: | :---------: |
| 2.1.0 | | √ | √ | √ | √ |
| 2.0.0 | | √ | √ | √ | √ |
| 1.13.0 | | √ | √ | √ | √ |
| 1.12.100 | | √ | √ | √ | √ |
| 1.12.0 | | √ | √ | √ | √ |
Please run `pip list | grep torch` to get your `pytorch_version`.
```bash
pip install oneccl_bind_pt=={pytorch_version} -f https://developer.intel.com/ipex-whl-stable-cpu
```
where `{pytorch_version}` should be your PyTorch version, for instance 2.1.0.
Check more approaches for [oneccl_bind_pt installation](https://github.com/intel/torch-ccl).
Versions of oneCCL and PyTorch must match.
<Tip warning={true}>
oneccl_bindings_for_pytorch 1.12.0 prebuilt wheel does not work with PyTorch 1.12.1 (it is for PyTorch 1.12.0)
PyTorch 1.12.1 should work with oneccl_bindings_for_pytorch 1.12.100
</Tip>
## Intel® MPI library
Use this standards-based MPI implementation to deliver flexible, efficient, scalable cluster messaging on Intel® architecture. This component is part of the Intel® oneAPI HPC Toolkit.
oneccl_bindings_for_pytorch is installed along with the MPI tool set. Need to source the environment before using it.
for Intel® oneCCL >= 1.12.0
```bash
oneccl_bindings_for_pytorch_path=$(python -c "from oneccl_bindings_for_pytorch import cwd; print(cwd)")
source $oneccl_bindings_for_pytorch_path/env/setvars.sh
```
for Intel® oneCCL whose version < 1.12.0
```bash
torch_ccl_path=$(python -c "import torch; import torch_ccl; import os; print(os.path.abspath(os.path.dirname(torch_ccl.__file__)))")
source $torch_ccl_path/env/setvars.sh
```
#### Intel® Extension for PyTorch installation
Intel Extension for PyTorch (IPEX) provides performance optimizations for CPU training with both Float32 and BFloat16 (refer to the [single CPU section](./perf_train_cpu) to learn more).
The following "Usage in Trainer" takes mpirun in Intel® MPI library as an example.
## Usage in Trainer
To enable multi CPU distributed training in the Trainer with the ccl backend, users should add **`--ddp_backend ccl`** in the command arguments.
Let's see an example with the [question-answering example](https://github.com/huggingface/transformers/tree/main/examples/pytorch/question-answering)
The following command enables training with 2 processes on one Xeon node, with one process running per one socket. The variables OMP_NUM_THREADS/CCL_WORKER_COUNT can be tuned for optimal performance.
```shell script
export CCL_WORKER_COUNT=1
export MASTER_ADDR=127.0.0.1
mpirun -n 2 -genv OMP_NUM_THREADS=23 \
python3 run_qa.py \
--model_name_or_path google-bert/bert-large-uncased \
--dataset_name squad \
--do_train \
--do_eval \
--per_device_train_batch_size 12 \
--learning_rate 3e-5 \
--num_train_epochs 2 \
--max_seq_length 384 \
--doc_stride 128 \
--output_dir /tmp/debug_squad/ \
--no_cuda \
--ddp_backend ccl \
--use_ipex
```
The following command enables training with a total of four processes on two Xeons (node0 and node1, taking node0 as the main process), ppn (processes per node) is set to 2, with one process running per one socket. The variables OMP_NUM_THREADS/CCL_WORKER_COUNT can be tuned for optimal performance.
In node0, you need to create a configuration file which contains the IP addresses of each node (for example hostfile) and pass that configuration file path as an argument.
```shell script
cat hostfile
xxx.xxx.xxx.xxx #node0 ip
xxx.xxx.xxx.xxx #node1 ip
```
Now, run the following command in node0 and **4DDP** will be enabled in node0 and node1 with BF16 auto mixed precision:
```shell script
export CCL_WORKER_COUNT=1
export MASTER_ADDR=xxx.xxx.xxx.xxx #node0 ip
mpirun -f hostfile -n 4 -ppn 2 \
-genv OMP_NUM_THREADS=23 \
python3 run_qa.py \
--model_name_or_path google-bert/bert-large-uncased \
--dataset_name squad \
--do_train \
--do_eval \
--per_device_train_batch_size 12 \
--learning_rate 3e-5 \
--num_train_epochs 2 \
--max_seq_length 384 \
--doc_stride 128 \
--output_dir /tmp/debug_squad/ \
--no_cuda \
--ddp_backend ccl \
--use_ipex \
--bf16
```
## Usage with Kubernetes
The same distributed training job from the previous section can be deployed to a Kubernetes cluster using the
[Kubeflow PyTorchJob training operator](https://www.kubeflow.org/docs/components/training/pytorch/).
### Setup
This example assumes that you have:
* Access to a Kubernetes cluster with [Kubeflow installed](https://www.kubeflow.org/docs/started/installing-kubeflow/)
* [`kubectl`](https://kubernetes.io/docs/tasks/tools/) installed and configured to access the Kubernetes cluster
* A [Persistent Volume Claim (PVC)](https://kubernetes.io/docs/concepts/storage/persistent-volumes/) that can be used
to store datasets and model files. There are multiple options for setting up the PVC including using an NFS
[storage class](https://kubernetes.io/docs/concepts/storage/storage-classes/) or a cloud storage bucket.
* A Docker container that includes your model training script and all the dependencies needed to run the script. For
distributed CPU training jobs, this typically includes PyTorch, Transformers, Intel Extension for PyTorch, Intel
oneCCL Bindings for PyTorch, and OpenSSH to communicate between the containers.
The snippet below is an example of a Dockerfile that uses a base image that supports distributed CPU training and then
extracts a Transformers release to the `/workspace` directory, so that the example scripts are included in the image:
```dockerfile
FROM intel/ai-workflows:torch-2.0.1-huggingface-multinode-py3.9
WORKDIR /workspace
# Download and extract the transformers code
ARG HF_TRANSFORMERS_VER="4.35.2"
RUN mkdir transformers && \
curl -sSL --retry 5 https://github.com/huggingface/transformers/archive/refs/tags/v${HF_TRANSFORMERS_VER}.tar.gz | tar -C transformers --strip-components=1 -xzf -
```
The image needs to be built and copied to the cluster's nodes or pushed to a container registry prior to deploying the
PyTorchJob to the cluster.
### PyTorchJob Specification File
The [Kubeflow PyTorchJob](https://www.kubeflow.org/docs/components/training/pytorch/) is used to run the distributed
training job on the cluster. The yaml file for the PyTorchJob defines parameters such as:
* The name of the PyTorchJob
* The number of replicas (workers)
* The python script and it's parameters that will be used to run the training job
* The types of resources (node selector, memory, and CPU) needed for each worker
* The image/tag for the Docker container to use
* Environment variables
* A volume mount for the PVC
The volume mount defines a path where the PVC will be mounted in the container for each worker pod. This location can be
used for the dataset, checkpoint files, and the saved model after training completes.
The snippet below is an example of a yaml file for a PyTorchJob with 4 workers running the
[question-answering example](https://github.com/huggingface/transformers/tree/main/examples/pytorch/question-answering).
```yaml
apiVersion: "kubeflow.org/v1"
kind: PyTorchJob
metadata:
name: transformers-pytorchjob
namespace: kubeflow
spec:
elasticPolicy:
rdzvBackend: c10d
minReplicas: 1
maxReplicas: 4
maxRestarts: 10
pytorchReplicaSpecs:
Worker:
replicas: 4 # The number of worker pods
restartPolicy: OnFailure
template:
spec:
containers:
- name: pytorch
image: <image name>:<tag> # Specify the docker image to use for the worker pods
imagePullPolicy: IfNotPresent
command:
- torchrun
- /workspace/transformers/examples/pytorch/question-answering/run_qa.py
- --model_name_or_path
- "google-bert/bert-large-uncased"
- --dataset_name
- "squad"
- --do_train
- --do_eval
- --per_device_train_batch_size
- "12"
- --learning_rate
- "3e-5"
- --num_train_epochs
- "2"
- --max_seq_length
- "384"
- --doc_stride
- "128"
- --output_dir
- "/tmp/pvc-mount/output"
- --no_cuda
- --ddp_backend
- "ccl"
- --use_ipex
- --bf16 # Specify --bf16 if your hardware supports bfloat16
env:
- name: LD_PRELOAD
value: "/usr/lib/x86_64-linux-gnu/libtcmalloc.so.4.5.9:/usr/local/lib/libiomp5.so"
- name: TRANSFORMERS_CACHE
value: "/tmp/pvc-mount/transformers_cache"
- name: HF_DATASETS_CACHE
value: "/tmp/pvc-mount/hf_datasets_cache"
- name: LOGLEVEL
value: "INFO"
- name: CCL_WORKER_COUNT
value: "1"
- name: OMP_NUM_THREADS # Can be tuned for optimal performance
- value: "56"
resources:
limits:
cpu: 200 # Update the CPU and memory limit values based on your nodes
memory: 128Gi
requests:
cpu: 200 # Update the CPU and memory request values based on your nodes
memory: 128Gi
volumeMounts:
- name: pvc-volume
mountPath: /tmp/pvc-mount
- mountPath: /dev/shm
name: dshm
restartPolicy: Never
nodeSelector: # Optionally use the node selector to specify what types of nodes to use for the workers
node-type: spr
volumes:
- name: pvc-volume
persistentVolumeClaim:
claimName: transformers-pvc
- name: dshm
emptyDir:
medium: Memory
```
To run this example, update the yaml based on your training script and the nodes in your cluster.
<Tip>
The CPU resource limits/requests in the yaml are defined in [cpu units](https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/#meaning-of-cpu)
where 1 CPU unit is equivalent to 1 physical CPU core or 1 virtual core (depending on whether the node is a physical
host or a VM). The amount of CPU and memory limits/requests defined in the yaml should be less than the amount of
available CPU/memory capacity on a single machine. It is usually a good idea to not use the entire machine's capacity in
order to leave some resources for the kubelet and OS. In order to get ["guaranteed"](https://kubernetes.io/docs/concepts/workloads/pods/pod-qos/#guaranteed)
[quality of service](https://kubernetes.io/docs/tasks/configure-pod-container/quality-service-pod/) for the worker pods,
set the same CPU and memory amounts for both the resource limits and requests.
</Tip>
### Deploy
After the PyTorchJob spec has been updated with values appropriate for your cluster and training job, it can be deployed
to the cluster using:
```bash
kubectl create -f pytorchjob.yaml
```
The `kubectl get pods -n kubeflow` command can then be used to list the pods in the `kubeflow` namespace. You should see
the worker pods for the PyTorchJob that was just deployed. At first, they will probably have a status of "Pending" as
the containers get pulled and created, then the status should change to "Running".
```
NAME READY STATUS RESTARTS AGE
...
transformers-pytorchjob-worker-0 1/1 Running 0 7m37s
transformers-pytorchjob-worker-1 1/1 Running 0 7m37s
transformers-pytorchjob-worker-2 1/1 Running 0 7m37s
transformers-pytorchjob-worker-3 1/1 Running 0 7m37s
...
```
The logs for worker can be viewed using `kubectl logs -n kubeflow <pod name>`. Add `-f` to stream the logs, for example:
```bash
kubectl logs -n kubeflow transformers-pytorchjob-worker-0 -f
```
After the training job completes, the trained model can be copied from the PVC or storage location. When you are done
with the job, the PyTorchJob resource can be deleted from the cluster using `kubectl delete -f pytorchjob.yaml`.
## Summary
This guide covered running distributed PyTorch training jobs using multiple CPUs on bare metal and on a Kubernetes
cluster. Both cases utilize Intel Extension for PyTorch and Intel oneCCL Bindings for PyTorch for optimal training
performance, and can be used as a template to run your own workload on multiple nodes.
| transformers/docs/source/en/perf_train_cpu_many.md/0 | {
"file_path": "transformers/docs/source/en/perf_train_cpu_many.md",
"repo_id": "transformers",
"token_count": 5806
} | 254 |
<!--Copyright 2020 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Export to ONNX
Deploying 🤗 Transformers models in production environments often requires, or can benefit from exporting the models into
a serialized format that can be loaded and executed on specialized runtimes and hardware.
🤗 Optimum is an extension of Transformers that enables exporting models from PyTorch or TensorFlow to serialized formats
such as ONNX and TFLite through its `exporters` module. 🤗 Optimum also provides a set of performance optimization tools to train
and run models on targeted hardware with maximum efficiency.
This guide demonstrates how you can export 🤗 Transformers models to ONNX with 🤗 Optimum, for the guide on exporting models to TFLite,
please refer to the [Export to TFLite page](tflite).
## Export to ONNX
[ONNX (Open Neural Network eXchange)](http://onnx.ai) is an open standard that defines a common set of operators and a
common file format to represent deep learning models in a wide variety of frameworks, including PyTorch and
TensorFlow. When a model is exported to the ONNX format, these operators are used to
construct a computational graph (often called an _intermediate representation_) which
represents the flow of data through the neural network.
By exposing a graph with standardized operators and data types, ONNX makes it easy to
switch between frameworks. For example, a model trained in PyTorch can be exported to
ONNX format and then imported in TensorFlow (and vice versa).
Once exported to ONNX format, a model can be:
- optimized for inference via techniques such as [graph optimization](https://huggingface.co/docs/optimum/onnxruntime/usage_guides/optimization) and [quantization](https://huggingface.co/docs/optimum/onnxruntime/usage_guides/quantization).
- run with ONNX Runtime via [`ORTModelForXXX` classes](https://huggingface.co/docs/optimum/onnxruntime/package_reference/modeling_ort),
which follow the same `AutoModel` API as the one you are used to in 🤗 Transformers.
- run with [optimized inference pipelines](https://huggingface.co/docs/optimum/main/en/onnxruntime/usage_guides/pipelines),
which has the same API as the [`pipeline`] function in 🤗 Transformers.
🤗 Optimum provides support for the ONNX export by leveraging configuration objects. These configuration objects come
ready-made for a number of model architectures, and are designed to be easily extendable to other architectures.
For the list of ready-made configurations, please refer to [🤗 Optimum documentation](https://huggingface.co/docs/optimum/exporters/onnx/overview).
There are two ways to export a 🤗 Transformers model to ONNX, here we show both:
- export with 🤗 Optimum via CLI.
- export with 🤗 Optimum with `optimum.onnxruntime`.
### Exporting a 🤗 Transformers model to ONNX with CLI
To export a 🤗 Transformers model to ONNX, first install an extra dependency:
```bash
pip install optimum[exporters]
```
To check out all available arguments, refer to the [🤗 Optimum docs](https://huggingface.co/docs/optimum/exporters/onnx/usage_guides/export_a_model#exporting-a-model-to-onnx-using-the-cli),
or view help in command line:
```bash
optimum-cli export onnx --help
```
To export a model's checkpoint from the 🤗 Hub, for example, `distilbert/distilbert-base-uncased-distilled-squad`, run the following command:
```bash
optimum-cli export onnx --model distilbert/distilbert-base-uncased-distilled-squad distilbert_base_uncased_squad_onnx/
```
You should see the logs indicating progress and showing where the resulting `model.onnx` is saved, like this:
```bash
Validating ONNX model distilbert_base_uncased_squad_onnx/model.onnx...
-[✓] ONNX model output names match reference model (start_logits, end_logits)
- Validating ONNX Model output "start_logits":
-[✓] (2, 16) matches (2, 16)
-[✓] all values close (atol: 0.0001)
- Validating ONNX Model output "end_logits":
-[✓] (2, 16) matches (2, 16)
-[✓] all values close (atol: 0.0001)
The ONNX export succeeded and the exported model was saved at: distilbert_base_uncased_squad_onnx
```
The example above illustrates exporting a checkpoint from 🤗 Hub. When exporting a local model, first make sure that you
saved both the model's weights and tokenizer files in the same directory (`local_path`). When using CLI, pass the
`local_path` to the `model` argument instead of the checkpoint name on 🤗 Hub and provide the `--task` argument.
You can review the list of supported tasks in the [🤗 Optimum documentation](https://huggingface.co/docs/optimum/exporters/task_manager).
If `task` argument is not provided, it will default to the model architecture without any task specific head.
```bash
optimum-cli export onnx --model local_path --task question-answering distilbert_base_uncased_squad_onnx/
```
The resulting `model.onnx` file can then be run on one of the [many
accelerators](https://onnx.ai/supported-tools.html#deployModel) that support the ONNX
standard. For example, we can load and run the model with [ONNX
Runtime](https://onnxruntime.ai/) as follows:
```python
>>> from transformers import AutoTokenizer
>>> from optimum.onnxruntime import ORTModelForQuestionAnswering
>>> tokenizer = AutoTokenizer.from_pretrained("distilbert_base_uncased_squad_onnx")
>>> model = ORTModelForQuestionAnswering.from_pretrained("distilbert_base_uncased_squad_onnx")
>>> inputs = tokenizer("What am I using?", "Using DistilBERT with ONNX Runtime!", return_tensors="pt")
>>> outputs = model(**inputs)
```
The process is identical for TensorFlow checkpoints on the Hub. For instance, here's how you would
export a pure TensorFlow checkpoint from the [Keras organization](https://huggingface.co/keras-io):
```bash
optimum-cli export onnx --model keras-io/transformers-qa distilbert_base_cased_squad_onnx/
```
### Exporting a 🤗 Transformers model to ONNX with `optimum.onnxruntime`
Alternative to CLI, you can export a 🤗 Transformers model to ONNX programmatically like so:
```python
>>> from optimum.onnxruntime import ORTModelForSequenceClassification
>>> from transformers import AutoTokenizer
>>> model_checkpoint = "distilbert_base_uncased_squad"
>>> save_directory = "onnx/"
>>> # Load a model from transformers and export it to ONNX
>>> ort_model = ORTModelForSequenceClassification.from_pretrained(model_checkpoint, export=True)
>>> tokenizer = AutoTokenizer.from_pretrained(model_checkpoint)
>>> # Save the onnx model and tokenizer
>>> ort_model.save_pretrained(save_directory)
>>> tokenizer.save_pretrained(save_directory)
```
### Exporting a model for an unsupported architecture
If you wish to contribute by adding support for a model that cannot be currently exported, you should first check if it is
supported in [`optimum.exporters.onnx`](https://huggingface.co/docs/optimum/exporters/onnx/overview),
and if it is not, [contribute to 🤗 Optimum](https://huggingface.co/docs/optimum/exporters/onnx/usage_guides/contribute)
directly.
### Exporting a model with `transformers.onnx`
<Tip warning={true}>
`tranformers.onnx` is no longer maintained, please export models with 🤗 Optimum as described above. This section will be removed in the future versions.
</Tip>
To export a 🤗 Transformers model to ONNX with `tranformers.onnx`, install extra dependencies:
```bash
pip install transformers[onnx]
```
Use `transformers.onnx` package as a Python module to export a checkpoint using a ready-made configuration:
```bash
python -m transformers.onnx --model=distilbert/distilbert-base-uncased onnx/
```
This exports an ONNX graph of the checkpoint defined by the `--model` argument. Pass any checkpoint on the 🤗 Hub or one that's stored locally.
The resulting `model.onnx` file can then be run on one of the many accelerators that support the ONNX standard. For example,
load and run the model with ONNX Runtime as follows:
```python
>>> from transformers import AutoTokenizer
>>> from onnxruntime import InferenceSession
>>> tokenizer = AutoTokenizer.from_pretrained("distilbert/distilbert-base-uncased")
>>> session = InferenceSession("onnx/model.onnx")
>>> # ONNX Runtime expects NumPy arrays as input
>>> inputs = tokenizer("Using DistilBERT with ONNX Runtime!", return_tensors="np")
>>> outputs = session.run(output_names=["last_hidden_state"], input_feed=dict(inputs))
```
The required output names (like `["last_hidden_state"]`) can be obtained by taking a look at the ONNX configuration of
each model. For example, for DistilBERT we have:
```python
>>> from transformers.models.distilbert import DistilBertConfig, DistilBertOnnxConfig
>>> config = DistilBertConfig()
>>> onnx_config = DistilBertOnnxConfig(config)
>>> print(list(onnx_config.outputs.keys()))
["last_hidden_state"]
```
The process is identical for TensorFlow checkpoints on the Hub. For example, export a pure TensorFlow checkpoint like so:
```bash
python -m transformers.onnx --model=keras-io/transformers-qa onnx/
```
To export a model that's stored locally, save the model's weights and tokenizer files in the same directory (e.g. `local-pt-checkpoint`),
then export it to ONNX by pointing the `--model` argument of the `transformers.onnx` package to the desired directory:
```bash
python -m transformers.onnx --model=local-pt-checkpoint onnx/
``` | transformers/docs/source/en/serialization.md/0 | {
"file_path": "transformers/docs/source/en/serialization.md",
"repo_id": "transformers",
"token_count": 2972
} | 255 |
<!--Copyright 2022 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Object detection
[[open-in-colab]]
Object detection is the computer vision task of detecting instances (such as humans, buildings, or cars) in an image. Object detection models receive an image as input and output
coordinates of the bounding boxes and associated labels of the detected objects. An image can contain multiple objects,
each with its own bounding box and a label (e.g. it can have a car and a building), and each object can
be present in different parts of an image (e.g. the image can have several cars).
This task is commonly used in autonomous driving for detecting things like pedestrians, road signs, and traffic lights.
Other applications include counting objects in images, image search, and more.
In this guide, you will learn how to:
1. Finetune [DETR](https://huggingface.co/docs/transformers/model_doc/detr), a model that combines a convolutional
backbone with an encoder-decoder Transformer, on the [CPPE-5](https://huggingface.co/datasets/cppe-5)
dataset.
2. Use your finetuned model for inference.
<Tip>
The task illustrated in this tutorial is supported by the following model architectures:
<!--This tip is automatically generated by `make fix-copies`, do not fill manually!-->
[Conditional DETR](../model_doc/conditional_detr), [Deformable DETR](../model_doc/deformable_detr), [DETA](../model_doc/deta), [DETR](../model_doc/detr), [Table Transformer](../model_doc/table-transformer), [YOLOS](../model_doc/yolos)
<!--End of the generated tip-->
</Tip>
Before you begin, make sure you have all the necessary libraries installed:
```bash
pip install -q datasets transformers evaluate timm albumentations
```
You'll use 🤗 Datasets to load a dataset from the Hugging Face Hub, 🤗 Transformers to train your model,
and `albumentations` to augment the data. `timm` is currently required to load a convolutional backbone for the DETR model.
We encourage you to share your model with the community. Log in to your Hugging Face account to upload it to the Hub.
When prompted, enter your token to log in:
```py
>>> from huggingface_hub import notebook_login
>>> notebook_login()
```
## Load the CPPE-5 dataset
The [CPPE-5 dataset](https://huggingface.co/datasets/cppe-5) contains images with
annotations identifying medical personal protective equipment (PPE) in the context of the COVID-19 pandemic.
Start by loading the dataset:
```py
>>> from datasets import load_dataset
>>> cppe5 = load_dataset("cppe-5")
>>> cppe5
DatasetDict({
train: Dataset({
features: ['image_id', 'image', 'width', 'height', 'objects'],
num_rows: 1000
})
test: Dataset({
features: ['image_id', 'image', 'width', 'height', 'objects'],
num_rows: 29
})
})
```
You'll see that this dataset already comes with a training set containing 1000 images and a test set with 29 images.
To get familiar with the data, explore what the examples look like.
```py
>>> cppe5["train"][0]
{'image_id': 15,
'image': <PIL.JpegImagePlugin.JpegImageFile image mode=RGB size=943x663 at 0x7F9EC9E77C10>,
'width': 943,
'height': 663,
'objects': {'id': [114, 115, 116, 117],
'area': [3796, 1596, 152768, 81002],
'bbox': [[302.0, 109.0, 73.0, 52.0],
[810.0, 100.0, 57.0, 28.0],
[160.0, 31.0, 248.0, 616.0],
[741.0, 68.0, 202.0, 401.0]],
'category': [4, 4, 0, 0]}}
```
The examples in the dataset have the following fields:
- `image_id`: the example image id
- `image`: a `PIL.Image.Image` object containing the image
- `width`: width of the image
- `height`: height of the image
- `objects`: a dictionary containing bounding box metadata for the objects in the image:
- `id`: the annotation id
- `area`: the area of the bounding box
- `bbox`: the object's bounding box (in the [COCO format](https://albumentations.ai/docs/getting_started/bounding_boxes_augmentation/#coco) )
- `category`: the object's category, with possible values including `Coverall (0)`, `Face_Shield (1)`, `Gloves (2)`, `Goggles (3)` and `Mask (4)`
You may notice that the `bbox` field follows the COCO format, which is the format that the DETR model expects.
However, the grouping of the fields inside `objects` differs from the annotation format DETR requires. You will
need to apply some preprocessing transformations before using this data for training.
To get an even better understanding of the data, visualize an example in the dataset.
```py
>>> import numpy as np
>>> import os
>>> from PIL import Image, ImageDraw
>>> image = cppe5["train"][0]["image"]
>>> annotations = cppe5["train"][0]["objects"]
>>> draw = ImageDraw.Draw(image)
>>> categories = cppe5["train"].features["objects"].feature["category"].names
>>> id2label = {index: x for index, x in enumerate(categories, start=0)}
>>> label2id = {v: k for k, v in id2label.items()}
>>> for i in range(len(annotations["id"])):
... box = annotations["bbox"][i]
... class_idx = annotations["category"][i]
... x, y, w, h = tuple(box)
... # Check if coordinates are normalized or not
... if max(box) > 1.0:
... # Coordinates are un-normalized, no need to re-scale them
... x1, y1 = int(x), int(y)
... x2, y2 = int(x + w), int(y + h)
... else:
... # Coordinates are normalized, re-scale them
... x1 = int(x * width)
... y1 = int(y * height)
... x2 = int((x + w) * width)
... y2 = int((y + h) * height)
... draw.rectangle((x, y, x + w, y + h), outline="red", width=1)
... draw.text((x, y), id2label[class_idx], fill="white")
>>> image
```
<div class="flex justify-center">
<img src="https://i.imgur.com/TdaqPJO.png" alt="CPPE-5 Image Example"/>
</div>
To visualize the bounding boxes with associated labels, you can get the labels from the dataset's metadata, specifically
the `category` field.
You'll also want to create dictionaries that map a label id to a label class (`id2label`) and the other way around (`label2id`).
You can use them later when setting up the model. Including these maps will make your model reusable by others if you share
it on the Hugging Face Hub. Please note that, the part of above code that draws the bounding boxes assume that it is in `XYWH` (x,y co-ordinates and width and height of the box) format. It might not work for other formats like `(x1, y1, x2, y2)`.
As a final step of getting familiar with the data, explore it for potential issues. One common problem with datasets for
object detection is bounding boxes that "stretch" beyond the edge of the image. Such "runaway" bounding boxes can raise
errors during training and should be addressed at this stage. There are a few examples with this issue in this dataset.
To keep things simple in this guide, we remove these images from the data.
```py
>>> remove_idx = [590, 821, 822, 875, 876, 878, 879]
>>> keep = [i for i in range(len(cppe5["train"])) if i not in remove_idx]
>>> cppe5["train"] = cppe5["train"].select(keep)
```
## Preprocess the data
To finetune a model, you must preprocess the data you plan to use to match precisely the approach used for the pre-trained model.
[`AutoImageProcessor`] takes care of processing image data to create `pixel_values`, `pixel_mask`, and
`labels` that a DETR model can train with. The image processor has some attributes that you won't have to worry about:
- `image_mean = [0.485, 0.456, 0.406 ]`
- `image_std = [0.229, 0.224, 0.225]`
These are the mean and standard deviation used to normalize images during the model pre-training. These values are crucial
to replicate when doing inference or finetuning a pre-trained image model.
Instantiate the image processor from the same checkpoint as the model you want to finetune.
```py
>>> from transformers import AutoImageProcessor
>>> checkpoint = "facebook/detr-resnet-50"
>>> image_processor = AutoImageProcessor.from_pretrained(checkpoint)
```
Before passing the images to the `image_processor`, apply two preprocessing transformations to the dataset:
- Augmenting images
- Reformatting annotations to meet DETR expectations
First, to make sure the model does not overfit on the training data, you can apply image augmentation with any data augmentation library. Here we use [Albumentations](https://albumentations.ai/docs/) ...
This library ensures that transformations affect the image and update the bounding boxes accordingly.
The 🤗 Datasets library documentation has a detailed [guide on how to augment images for object detection](https://huggingface.co/docs/datasets/object_detection),
and it uses the exact same dataset as an example. Apply the same approach here, resize each image to (480, 480),
flip it horizontally, and brighten it:
```py
>>> import albumentations
>>> import numpy as np
>>> import torch
>>> transform = albumentations.Compose(
... [
... albumentations.Resize(480, 480),
... albumentations.HorizontalFlip(p=1.0),
... albumentations.RandomBrightnessContrast(p=1.0),
... ],
... bbox_params=albumentations.BboxParams(format="coco", label_fields=["category"]),
... )
```
The `image_processor` expects the annotations to be in the following format: `{'image_id': int, 'annotations': List[Dict]}`,
where each dictionary is a COCO object annotation. Let's add a function to reformat annotations for a single example:
```py
>>> def formatted_anns(image_id, category, area, bbox):
... annotations = []
... for i in range(0, len(category)):
... new_ann = {
... "image_id": image_id,
... "category_id": category[i],
... "isCrowd": 0,
... "area": area[i],
... "bbox": list(bbox[i]),
... }
... annotations.append(new_ann)
... return annotations
```
Now you can combine the image and annotation transformations to use on a batch of examples:
```py
>>> # transforming a batch
>>> def transform_aug_ann(examples):
... image_ids = examples["image_id"]
... images, bboxes, area, categories = [], [], [], []
... for image, objects in zip(examples["image"], examples["objects"]):
... image = np.array(image.convert("RGB"))[:, :, ::-1]
... out = transform(image=image, bboxes=objects["bbox"], category=objects["category"])
... area.append(objects["area"])
... images.append(out["image"])
... bboxes.append(out["bboxes"])
... categories.append(out["category"])
... targets = [
... {"image_id": id_, "annotations": formatted_anns(id_, cat_, ar_, box_)}
... for id_, cat_, ar_, box_ in zip(image_ids, categories, area, bboxes)
... ]
... return image_processor(images=images, annotations=targets, return_tensors="pt")
```
Apply this preprocessing function to the entire dataset using 🤗 Datasets [`~datasets.Dataset.with_transform`] method. This method applies
transformations on the fly when you load an element of the dataset.
At this point, you can check what an example from the dataset looks like after the transformations. You should see a tensor
with `pixel_values`, a tensor with `pixel_mask`, and `labels`.
```py
>>> cppe5["train"] = cppe5["train"].with_transform(transform_aug_ann)
>>> cppe5["train"][15]
{'pixel_values': tensor([[[ 0.9132, 0.9132, 0.9132, ..., -1.9809, -1.9809, -1.9809],
[ 0.9132, 0.9132, 0.9132, ..., -1.9809, -1.9809, -1.9809],
[ 0.9132, 0.9132, 0.9132, ..., -1.9638, -1.9638, -1.9638],
...,
[-1.5699, -1.5699, -1.5699, ..., -1.9980, -1.9980, -1.9980],
[-1.5528, -1.5528, -1.5528, ..., -1.9980, -1.9809, -1.9809],
[-1.5528, -1.5528, -1.5528, ..., -1.9980, -1.9809, -1.9809]],
[[ 1.3081, 1.3081, 1.3081, ..., -1.8431, -1.8431, -1.8431],
[ 1.3081, 1.3081, 1.3081, ..., -1.8431, -1.8431, -1.8431],
[ 1.3081, 1.3081, 1.3081, ..., -1.8256, -1.8256, -1.8256],
...,
[-1.3179, -1.3179, -1.3179, ..., -1.8606, -1.8606, -1.8606],
[-1.3004, -1.3004, -1.3004, ..., -1.8606, -1.8431, -1.8431],
[-1.3004, -1.3004, -1.3004, ..., -1.8606, -1.8431, -1.8431]],
[[ 1.4200, 1.4200, 1.4200, ..., -1.6476, -1.6476, -1.6476],
[ 1.4200, 1.4200, 1.4200, ..., -1.6476, -1.6476, -1.6476],
[ 1.4200, 1.4200, 1.4200, ..., -1.6302, -1.6302, -1.6302],
...,
[-1.0201, -1.0201, -1.0201, ..., -1.5604, -1.5604, -1.5604],
[-1.0027, -1.0027, -1.0027, ..., -1.5604, -1.5430, -1.5430],
[-1.0027, -1.0027, -1.0027, ..., -1.5604, -1.5430, -1.5430]]]),
'pixel_mask': tensor([[1, 1, 1, ..., 1, 1, 1],
[1, 1, 1, ..., 1, 1, 1],
[1, 1, 1, ..., 1, 1, 1],
...,
[1, 1, 1, ..., 1, 1, 1],
[1, 1, 1, ..., 1, 1, 1],
[1, 1, 1, ..., 1, 1, 1]]),
'labels': {'size': tensor([800, 800]), 'image_id': tensor([756]), 'class_labels': tensor([4]), 'boxes': tensor([[0.7340, 0.6986, 0.3414, 0.5944]]), 'area': tensor([519544.4375]), 'iscrowd': tensor([0]), 'orig_size': tensor([480, 480])}}
```
You have successfully augmented the individual images and prepared their annotations. However, preprocessing isn't
complete yet. In the final step, create a custom `collate_fn` to batch images together.
Pad images (which are now `pixel_values`) to the largest image in a batch, and create a corresponding `pixel_mask`
to indicate which pixels are real (1) and which are padding (0).
```py
>>> def collate_fn(batch):
... pixel_values = [item["pixel_values"] for item in batch]
... encoding = image_processor.pad(pixel_values, return_tensors="pt")
... labels = [item["labels"] for item in batch]
... batch = {}
... batch["pixel_values"] = encoding["pixel_values"]
... batch["pixel_mask"] = encoding["pixel_mask"]
... batch["labels"] = labels
... return batch
```
## Training the DETR model
You have done most of the heavy lifting in the previous sections, so now you are ready to train your model!
The images in this dataset are still quite large, even after resizing. This means that finetuning this model will
require at least one GPU.
Training involves the following steps:
1. Load the model with [`AutoModelForObjectDetection`] using the same checkpoint as in the preprocessing.
2. Define your training hyperparameters in [`TrainingArguments`].
3. Pass the training arguments to [`Trainer`] along with the model, dataset, image processor, and data collator.
4. Call [`~Trainer.train`] to finetune your model.
When loading the model from the same checkpoint that you used for the preprocessing, remember to pass the `label2id`
and `id2label` maps that you created earlier from the dataset's metadata. Additionally, we specify `ignore_mismatched_sizes=True` to replace the existing classification head with a new one.
```py
>>> from transformers import AutoModelForObjectDetection
>>> model = AutoModelForObjectDetection.from_pretrained(
... checkpoint,
... id2label=id2label,
... label2id=label2id,
... ignore_mismatched_sizes=True,
... )
```
In the [`TrainingArguments`] use `output_dir` to specify where to save your model, then configure hyperparameters as you see fit.
It is important you do not remove unused columns because this will drop the image column. Without the image column, you
can't create `pixel_values`. For this reason, set `remove_unused_columns` to `False`.
If you wish to share your model by pushing to the Hub, set `push_to_hub` to `True` (you must be signed in to Hugging
Face to upload your model).
```py
>>> from transformers import TrainingArguments
>>> training_args = TrainingArguments(
... output_dir="detr-resnet-50_finetuned_cppe5",
... per_device_train_batch_size=8,
... num_train_epochs=10,
... fp16=True,
... save_steps=200,
... logging_steps=50,
... learning_rate=1e-5,
... weight_decay=1e-4,
... save_total_limit=2,
... remove_unused_columns=False,
... push_to_hub=True,
... )
```
Finally, bring everything together, and call [`~transformers.Trainer.train`]:
```py
>>> from transformers import Trainer
>>> trainer = Trainer(
... model=model,
... args=training_args,
... data_collator=collate_fn,
... train_dataset=cppe5["train"],
... tokenizer=image_processor,
... )
>>> trainer.train()
```
If you have set `push_to_hub` to `True` in the `training_args`, the training checkpoints are pushed to the
Hugging Face Hub. Upon training completion, push the final model to the Hub as well by calling the [`~transformers.Trainer.push_to_hub`] method.
```py
>>> trainer.push_to_hub()
```
## Evaluate
Object detection models are commonly evaluated with a set of <a href="https://cocodataset.org/#detection-eval">COCO-style metrics</a>.
You can use one of the existing metrics implementations, but here you'll use the one from `torchvision` to evaluate the final
model that you pushed to the Hub.
To use the `torchvision` evaluator, you'll need to prepare a ground truth COCO dataset. The API to build a COCO dataset
requires the data to be stored in a certain format, so you'll need to save images and annotations to disk first. Just like
when you prepared your data for training, the annotations from the `cppe5["test"]` need to be formatted. However, images
should stay as they are.
The evaluation step requires a bit of work, but it can be split in three major steps.
First, prepare the `cppe5["test"]` set: format the annotations and save the data to disk.
```py
>>> import json
>>> # format annotations the same as for training, no need for data augmentation
>>> def val_formatted_anns(image_id, objects):
... annotations = []
... for i in range(0, len(objects["id"])):
... new_ann = {
... "id": objects["id"][i],
... "category_id": objects["category"][i],
... "iscrowd": 0,
... "image_id": image_id,
... "area": objects["area"][i],
... "bbox": objects["bbox"][i],
... }
... annotations.append(new_ann)
... return annotations
>>> # Save images and annotations into the files torchvision.datasets.CocoDetection expects
>>> def save_cppe5_annotation_file_images(cppe5):
... output_json = {}
... path_output_cppe5 = f"{os.getcwd()}/cppe5/"
... if not os.path.exists(path_output_cppe5):
... os.makedirs(path_output_cppe5)
... path_anno = os.path.join(path_output_cppe5, "cppe5_ann.json")
... categories_json = [{"supercategory": "none", "id": id, "name": id2label[id]} for id in id2label]
... output_json["images"] = []
... output_json["annotations"] = []
... for example in cppe5:
... ann = val_formatted_anns(example["image_id"], example["objects"])
... output_json["images"].append(
... {
... "id": example["image_id"],
... "width": example["image"].width,
... "height": example["image"].height,
... "file_name": f"{example['image_id']}.png",
... }
... )
... output_json["annotations"].extend(ann)
... output_json["categories"] = categories_json
... with open(path_anno, "w") as file:
... json.dump(output_json, file, ensure_ascii=False, indent=4)
... for im, img_id in zip(cppe5["image"], cppe5["image_id"]):
... path_img = os.path.join(path_output_cppe5, f"{img_id}.png")
... im.save(path_img)
... return path_output_cppe5, path_anno
```
Next, prepare an instance of a `CocoDetection` class that can be used with `cocoevaluator`.
```py
>>> import torchvision
>>> class CocoDetection(torchvision.datasets.CocoDetection):
... def __init__(self, img_folder, image_processor, ann_file):
... super().__init__(img_folder, ann_file)
... self.image_processor = image_processor
... def __getitem__(self, idx):
... # read in PIL image and target in COCO format
... img, target = super(CocoDetection, self).__getitem__(idx)
... # preprocess image and target: converting target to DETR format,
... # resizing + normalization of both image and target)
... image_id = self.ids[idx]
... target = {"image_id": image_id, "annotations": target}
... encoding = self.image_processor(images=img, annotations=target, return_tensors="pt")
... pixel_values = encoding["pixel_values"].squeeze() # remove batch dimension
... target = encoding["labels"][0] # remove batch dimension
... return {"pixel_values": pixel_values, "labels": target}
>>> im_processor = AutoImageProcessor.from_pretrained("devonho/detr-resnet-50_finetuned_cppe5")
>>> path_output_cppe5, path_anno = save_cppe5_annotation_file_images(cppe5["test"])
>>> test_ds_coco_format = CocoDetection(path_output_cppe5, im_processor, path_anno)
```
Finally, load the metrics and run the evaluation.
```py
>>> import evaluate
>>> from tqdm import tqdm
>>> model = AutoModelForObjectDetection.from_pretrained("devonho/detr-resnet-50_finetuned_cppe5")
>>> module = evaluate.load("ybelkada/cocoevaluate", coco=test_ds_coco_format.coco)
>>> val_dataloader = torch.utils.data.DataLoader(
... test_ds_coco_format, batch_size=8, shuffle=False, num_workers=4, collate_fn=collate_fn
... )
>>> with torch.no_grad():
... for idx, batch in enumerate(tqdm(val_dataloader)):
... pixel_values = batch["pixel_values"]
... pixel_mask = batch["pixel_mask"]
... labels = [
... {k: v for k, v in t.items()} for t in batch["labels"]
... ] # these are in DETR format, resized + normalized
... # forward pass
... outputs = model(pixel_values=pixel_values, pixel_mask=pixel_mask)
... orig_target_sizes = torch.stack([target["orig_size"] for target in labels], dim=0)
... results = im_processor.post_process(outputs, orig_target_sizes) # convert outputs of model to Pascal VOC format (xmin, ymin, xmax, ymax)
... module.add(prediction=results, reference=labels)
... del batch
>>> results = module.compute()
>>> print(results)
Accumulating evaluation results...
DONE (t=0.08s).
IoU metric: bbox
Average Precision (AP) @[ IoU=0.50:0.95 | area= all | maxDets=100 ] = 0.352
Average Precision (AP) @[ IoU=0.50 | area= all | maxDets=100 ] = 0.681
Average Precision (AP) @[ IoU=0.75 | area= all | maxDets=100 ] = 0.292
Average Precision (AP) @[ IoU=0.50:0.95 | area= small | maxDets=100 ] = 0.168
Average Precision (AP) @[ IoU=0.50:0.95 | area=medium | maxDets=100 ] = 0.208
Average Precision (AP) @[ IoU=0.50:0.95 | area= large | maxDets=100 ] = 0.429
Average Recall (AR) @[ IoU=0.50:0.95 | area= all | maxDets= 1 ] = 0.274
Average Recall (AR) @[ IoU=0.50:0.95 | area= all | maxDets= 10 ] = 0.484
Average Recall (AR) @[ IoU=0.50:0.95 | area= all | maxDets=100 ] = 0.501
Average Recall (AR) @[ IoU=0.50:0.95 | area= small | maxDets=100 ] = 0.191
Average Recall (AR) @[ IoU=0.50:0.95 | area=medium | maxDets=100 ] = 0.323
Average Recall (AR) @[ IoU=0.50:0.95 | area= large | maxDets=100 ] = 0.590
```
These results can be further improved by adjusting the hyperparameters in [`~transformers.TrainingArguments`]. Give it a go!
## Inference
Now that you have finetuned a DETR model, evaluated it, and uploaded it to the Hugging Face Hub, you can use it for inference.
The simplest way to try out your finetuned model for inference is to use it in a [`Pipeline`]. Instantiate a pipeline
for object detection with your model, and pass an image to it:
```py
>>> from transformers import pipeline
>>> import requests
>>> url = "https://i.imgur.com/2lnWoly.jpg"
>>> image = Image.open(requests.get(url, stream=True).raw)
>>> obj_detector = pipeline("object-detection", model="devonho/detr-resnet-50_finetuned_cppe5")
>>> obj_detector(image)
```
You can also manually replicate the results of the pipeline if you'd like:
```py
>>> image_processor = AutoImageProcessor.from_pretrained("devonho/detr-resnet-50_finetuned_cppe5")
>>> model = AutoModelForObjectDetection.from_pretrained("devonho/detr-resnet-50_finetuned_cppe5")
>>> with torch.no_grad():
... inputs = image_processor(images=image, return_tensors="pt")
... outputs = model(**inputs)
... target_sizes = torch.tensor([image.size[::-1]])
... results = image_processor.post_process_object_detection(outputs, threshold=0.5, target_sizes=target_sizes)[0]
>>> for score, label, box in zip(results["scores"], results["labels"], results["boxes"]):
... box = [round(i, 2) for i in box.tolist()]
... print(
... f"Detected {model.config.id2label[label.item()]} with confidence "
... f"{round(score.item(), 3)} at location {box}"
... )
Detected Coverall with confidence 0.566 at location [1215.32, 147.38, 4401.81, 3227.08]
Detected Mask with confidence 0.584 at location [2449.06, 823.19, 3256.43, 1413.9]
```
Let's plot the result:
```py
>>> draw = ImageDraw.Draw(image)
>>> for score, label, box in zip(results["scores"], results["labels"], results["boxes"]):
... box = [round(i, 2) for i in box.tolist()]
... x, y, x2, y2 = tuple(box)
... draw.rectangle((x, y, x2, y2), outline="red", width=1)
... draw.text((x, y), model.config.id2label[label.item()], fill="white")
>>> image
```
<div class="flex justify-center">
<img src="https://i.imgur.com/4QZnf9A.png" alt="Object detection result on a new image"/>
</div>
| transformers/docs/source/en/tasks/object_detection.md/0 | {
"file_path": "transformers/docs/source/en/tasks/object_detection.md",
"repo_id": "transformers",
"token_count": 9638
} | 256 |
<!--Copyright 2023 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Export to TFLite
[TensorFlow Lite](https://www.tensorflow.org/lite/guide) is a lightweight framework for deploying machine learning models
on resource-constrained devices, such as mobile phones, embedded systems, and Internet of Things (IoT) devices.
TFLite is designed to optimize and run models efficiently on these devices with limited computational power, memory, and
power consumption.
A TensorFlow Lite model is represented in a special efficient portable format identified by the `.tflite` file extension.
🤗 Optimum offers functionality to export 🤗 Transformers models to TFLite through the `exporters.tflite` module.
For the list of supported model architectures, please refer to [🤗 Optimum documentation](https://huggingface.co/docs/optimum/exporters/tflite/overview).
To export a model to TFLite, install the required dependencies:
```bash
pip install optimum[exporters-tf]
```
To check out all available arguments, refer to the [🤗 Optimum docs](https://huggingface.co/docs/optimum/main/en/exporters/tflite/usage_guides/export_a_model),
or view help in command line:
```bash
optimum-cli export tflite --help
```
To export a model's checkpoint from the 🤗 Hub, for example, `google-bert/bert-base-uncased`, run the following command:
```bash
optimum-cli export tflite --model google-bert/bert-base-uncased --sequence_length 128 bert_tflite/
```
You should see the logs indicating progress and showing where the resulting `model.tflite` is saved, like this:
```bash
Validating TFLite model...
-[✓] TFLite model output names match reference model (logits)
- Validating TFLite Model output "logits":
-[✓] (1, 128, 30522) matches (1, 128, 30522)
-[x] values not close enough, max diff: 5.817413330078125e-05 (atol: 1e-05)
The TensorFlow Lite export succeeded with the warning: The maximum absolute difference between the output of the reference model and the TFLite exported model is not within the set tolerance 1e-05:
- logits: max diff = 5.817413330078125e-05.
The exported model was saved at: bert_tflite
```
The example above illustrates exporting a checkpoint from 🤗 Hub. When exporting a local model, first make sure that you
saved both the model's weights and tokenizer files in the same directory (`local_path`). When using CLI, pass the
`local_path` to the `model` argument instead of the checkpoint name on 🤗 Hub. | transformers/docs/source/en/tflite.md/0 | {
"file_path": "transformers/docs/source/en/tflite.md",
"repo_id": "transformers",
"token_count": 878
} | 257 |
<!--Copyright 2020 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Convertir checkpoints de Tensorflow
Te proporcionamos una interfaz de línea de comando (`CLI`, por sus siglas en inglés) para convertir puntos de control (_checkpoints_) originales de Bert/GPT/GPT-2/Transformer-XL/XLNet/XLM en modelos que se puedan cargar utilizando los métodos `from_pretrained` de la biblioteca.
<Tip>
Desde 2.3.0, el script para convertir es parte de la CLI de transformers (**transformers-cli**) disponible en cualquier instalación de transformers >= 2.3.0.
La siguiente documentación refleja el formato para el comando **transformers-cli convert**.
</Tip>
## BERT
Puedes convertir cualquier checkpoint de TensorFlow para BERT (en particular, [los modelos pre-entrenados y publicados por Google](https://github.com/google-research/bert#pre-trained-models)) en un archivo de PyTorch mediante el script [convert_bert_original_tf_checkpoint_to_pytorch.py](https://github.com/huggingface/transformers/tree/main/src/transformers/models/bert/convert_bert_original_tf_checkpoint_to_pytorch.py).
Esta CLI toma como entrada un checkpoint de TensorFlow (tres archivos que comienzan con `bert_model.ckpt`) y el archivo de configuración asociado (`bert_config.json`), y crea un modelo PyTorch para esta configuración, carga los pesos del checkpoint de TensorFlow en el modelo de PyTorch y guarda el modelo resultante en un archivo estándar de PyTorch que se puede importar usando `from_pretrained()` (ve el ejemplo en [Tour rápido](quicktour), [run_glue.py](https://github.com/huggingface/transformers/tree/main/examples/pytorch/text-classification/run_glue.py)).
Solo necesitas ejecutar este script **una vez** para convertir un modelo a PyTorch. Después, puedes ignorar el checkpoint de TensorFlow (los tres archivos que comienzan con `bert_model.ckpt`), pero asegúrate de conservar el archivo de configuración (`bert_config.json`) y el archivo de vocabulario (`vocab.txt`) ya que estos también son necesarios para el modelo en PyTorch.
Para ejecutar este script deberás tener instalado TensorFlow y PyTorch (`pip install tensorflow`). El resto del repositorio solo requiere PyTorch.
Aquí hay un ejemplo del proceso para convertir un modelo `BERT-Base Uncased` pre-entrenado:
```bash
export BERT_BASE_DIR=/path/to/bert/uncased_L-12_H-768_A-12
transformers-cli convert --model_type bert \
--tf_checkpoint $BERT_BASE_DIR/bert_model.ckpt \
--config $BERT_BASE_DIR/bert_config.json \
--pytorch_dump_output $BERT_BASE_DIR/pytorch_model.bin
```
Puedes descargar los modelos pre-entrenados de Google para la conversión [aquí](https://github.com/google-research/bert#pre-trained-models).
## ALBERT
Convierte los checkpoints del modelo ALBERT de TensorFlow a PyTorch usando el script [convert_albert_original_tf_checkpoint_to_pytorch.py](https://github.com/huggingface/transformers/tree/main/src/transformers/models/albert/convert_albert_original_tf_checkpoint_to_pytorch.py).
La CLI toma como entrada un checkpoint de TensorFlow (tres archivos que comienzan con `model.ckpt-best`) y el archivo de configuración adjunto (`albert_config.json`), luego crea y guarda un modelo de PyTorch. Para ejecutar esta conversión deberás tener instalados TensorFlow y PyTorch.
Aquí hay un ejemplo del proceso para convertir un modelo `ALBERT Base` pre-entrenado:
```bash
export ALBERT_BASE_DIR=/path/to/albert/albert_base
transformers-cli convert --model_type albert \
--tf_checkpoint $ALBERT_BASE_DIR/model.ckpt-best \
--config $ALBERT_BASE_DIR/albert_config.json \
--pytorch_dump_output $ALBERT_BASE_DIR/pytorch_model.bin
```
Puedes descargar los modelos pre-entrenados de Google para la conversión [aquí](https://github.com/google-research/albert#pre-trained-models).
## OpenAI GPT
Este es un ejemplo del proceso para convertir un modelo OpenAI GPT pre-entrenado, asumiendo que tu checkpoint de NumPy se guarda con el mismo formato que el modelo pre-entrenado de OpenAI (más información [aquí](https://github.com/openai/finetune-transformer-lm)):
```bash
export OPENAI_GPT_CHECKPOINT_FOLDER_PATH=/path/to/openai/pretrained/numpy/weights
transformers-cli convert --model_type gpt \
--tf_checkpoint $OPENAI_GPT_CHECKPOINT_FOLDER_PATH \
--pytorch_dump_output $PYTORCH_DUMP_OUTPUT \
[--config OPENAI_GPT_CONFIG] \
[--finetuning_task_name OPENAI_GPT_FINETUNED_TASK] \
```
## OpenAI GPT-2
Aquí hay un ejemplo del proceso para convertir un modelo OpenAI GPT-2 pre-entrenado (más información [aquí](https://github.com/openai/gpt-2)):
```bash
export OPENAI_GPT2_CHECKPOINT_PATH=/path/to/openai-community/gpt2/pretrained/weights
transformers-cli convert --model_type openai-community/gpt2 \
--tf_checkpoint $OPENAI_GPT2_CHECKPOINT_PATH \
--pytorch_dump_output $PYTORCH_DUMP_OUTPUT \
[--config OPENAI_GPT2_CONFIG] \
[--finetuning_task_name OPENAI_GPT2_FINETUNED_TASK]
```
## XLNet
Aquí hay un ejemplo del proceso para convertir un modelo XLNet pre-entrenado:
```bash
export TRANSFO_XL_CHECKPOINT_PATH=/path/to/xlnet/checkpoint
export TRANSFO_XL_CONFIG_PATH=/path/to/xlnet/config
transformers-cli convert --model_type xlnet \
--tf_checkpoint $TRANSFO_XL_CHECKPOINT_PATH \
--config $TRANSFO_XL_CONFIG_PATH \
--pytorch_dump_output $PYTORCH_DUMP_OUTPUT \
[--finetuning_task_name XLNET_FINETUNED_TASK] \
```
## XLM
Aquí hay un ejemplo del proceso para convertir un modelo XLM pre-entrenado:
```bash
export XLM_CHECKPOINT_PATH=/path/to/xlm/checkpoint
transformers-cli convert --model_type xlm \
--tf_checkpoint $XLM_CHECKPOINT_PATH \
--pytorch_dump_output $PYTORCH_DUMP_OUTPUT
[--config XML_CONFIG] \
[--finetuning_task_name XML_FINETUNED_TASK]
```
## T5
Aquí hay un ejemplo del proceso para convertir un modelo T5 pre-entrenado:
```bash
export T5=/path/to/t5/uncased_L-12_H-768_A-12
transformers-cli convert --model_type t5 \
--tf_checkpoint $T5/t5_model.ckpt \
--config $T5/t5_config.json \
--pytorch_dump_output $T5/pytorch_model.bin
```
| transformers/docs/source/es/converting_tensorflow_models.md/0 | {
"file_path": "transformers/docs/source/es/converting_tensorflow_models.md",
"repo_id": "transformers",
"token_count": 2429
} | 258 |
<!--Copyright 2022 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Preprocesamiento
[[open-in-colab]]
Antes de que puedas utilizar los datos en un modelo, debes procesarlos en un formato aceptable para el modelo. Un modelo no entiende el texto en bruto, las imágenes o el audio. Estas entradas necesitan ser convertidas en números y ensambladas en tensores. En este tutorial, podrás:
* Preprocesar los datos textuales con un tokenizador.
* Preprocesar datos de imagen o audio con un extractor de características.
* Preprocesar datos para una tarea multimodal con un procesador.
## NLP
<Youtube id="Yffk5aydLzg"/>
La principal herramienta para procesar datos textuales es un [tokenizador](main_classes/tokenizer). Un tokenizador comienza dividiendo el texto en *tokens* según un conjunto de reglas. Los tokens se convierten en números, que se utilizan para construir tensores como entrada a un modelo. El tokenizador también añade cualquier entrada adicional que requiera el modelo.
<Tip>
Si tienes previsto utilizar un modelo pre-entrenado, es importante que utilices el tokenizador pre-entrenado asociado. Esto te asegura que el texto se divide de la misma manera que el corpus de pre-entrenamiento y utiliza el mismo índice de tokens correspondiente (usualmente referido como el *vocab*) durante el pre-entrenamiento.
</Tip>
Comienza rápidamente cargando un tokenizador pre-entrenado con la clase [`AutoTokenizer`]. Esto descarga el *vocab* utilizado cuando un modelo es pre-entrenado.
### Tokenizar
Carga un tokenizador pre-entrenado con [`AutoTokenizer.from_pretrained`]:
```py
>>> from transformers import AutoTokenizer
>>> tokenizer = AutoTokenizer.from_pretrained("google-bert/bert-base-cased")
```
A continuación, pasa tu frase al tokenizador:
```py
>>> encoded_input = tokenizer("Do not meddle in the affairs of wizards, for they are subtle and quick to anger.")
>>> print(encoded_input)
{'input_ids': [101, 2079, 2025, 19960, 10362, 1999, 1996, 3821, 1997, 16657, 1010, 2005, 2027, 2024, 11259, 1998, 4248, 2000, 4963, 1012, 102],
'token_type_ids': [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
'attention_mask': [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]}
```
El tokenizador devuelve un diccionario con tres ítems importantes:
* [input_ids](glossary#input-ids) son los índices correspondientes a cada token de la frase.
* [attention_mask](glossary#attention-mask) indica si un token debe ser atendido o no.
* [token_type_ids](glossary#token-type-ids) identifica a qué secuencia pertenece un token cuando hay más de una secuencia.
Tu puedes decodificar el `input_ids` para devolver la entrada original:
```py
>>> tokenizer.decode(encoded_input["input_ids"])
'[CLS] Do not meddle in the affairs of wizards, for they are subtle and quick to anger. [SEP]'
```
Como puedes ver, el tokenizador ha añadido dos tokens especiales - `CLS` y `SEP` (clasificador y separador) - a la frase. No todos los modelos necesitan
tokens especiales, pero si lo llegas a necesitar, el tokenizador los añadirá automáticamente.
Si hay varias frases que quieres preprocesar, pasa las frases como una lista al tokenizador:
```py
>>> batch_sentences = [
... "But what about second breakfast?",
... "Don't think he knows about second breakfast, Pip.",
... "What about elevensies?",
... ]
>>> encoded_inputs = tokenizer(batch_sentences)
>>> print(encoded_inputs)
{'input_ids': [[101, 1252, 1184, 1164, 1248, 6462, 136, 102],
[101, 1790, 112, 189, 1341, 1119, 3520, 1164, 1248, 6462, 117, 21902, 1643, 119, 102],
[101, 1327, 1164, 5450, 23434, 136, 102]],
'token_type_ids': [[0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0]],
'attention_mask': [[1, 1, 1, 1, 1, 1, 1, 1],
[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
[1, 1, 1, 1, 1, 1, 1]]}
```
### Pad
Esto nos lleva a un tema importante. Cuando se procesa un batch de frases, no siempre tienen la misma longitud. Esto es un problema porque los tensores que se introducen en el modelo deben tener una forma uniforme. El pad es una estrategia para asegurar que los tensores sean rectangulares añadiendo un "padding token" especial a las oraciones con menos tokens.
Establece el parámetro `padding` en `True` aplicando el pad a las secuencias más cortas del batch para que coincidan con la secuencia más larga:
```py
>>> batch_sentences = [
... "But what about second breakfast?",
... "Don't think he knows about second breakfast, Pip.",
... "What about elevensies?",
... ]
>>> encoded_input = tokenizer(batch_sentences, padding=True)
>>> print(encoded_input)
{'input_ids': [[101, 1252, 1184, 1164, 1248, 6462, 136, 102, 0, 0, 0, 0, 0, 0, 0],
[101, 1790, 112, 189, 1341, 1119, 3520, 1164, 1248, 6462, 117, 21902, 1643, 119, 102],
[101, 1327, 1164, 5450, 23434, 136, 102, 0, 0, 0, 0, 0, 0, 0, 0]],
'token_type_ids': [[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]],
'attention_mask': [[1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0],
[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
[1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0]]}
```
Observa que el tokenizador ha aplicado el pad a la primera y la tercera frase con un "0" porque son más cortas.
### Truncamiento
En el otro extremo del espectro, a veces una secuencia puede ser demasiado larga para un modelo. En este caso, tendrás que truncar la secuencia a una longitud más corta.
Establece el parámetro `truncation` a `True` para truncar una secuencia a la longitud máxima aceptada por el modelo:
```py
>>> batch_sentences = [
... "But what about second breakfast?",
... "Don't think he knows about second breakfast, Pip.",
... "What about elevensies?",
... ]
>>> encoded_input = tokenizer(batch_sentences, padding=True, truncation=True)
>>> print(encoded_input)
{'input_ids': [[101, 1252, 1184, 1164, 1248, 6462, 136, 102, 0, 0, 0, 0, 0, 0, 0],
[101, 1790, 112, 189, 1341, 1119, 3520, 1164, 1248, 6462, 117, 21902, 1643, 119, 102],
[101, 1327, 1164, 5450, 23434, 136, 102, 0, 0, 0, 0, 0, 0, 0, 0]],
'token_type_ids': [[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]],
'attention_mask': [[1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0],
[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
[1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0]]}
```
### Construye tensores
Finalmente, si quieres que el tokenizador devuelva los tensores reales que se introducen en el modelo.
Establece el parámetro `return_tensors` como `pt` para PyTorch, o `tf` para TensorFlow:
```py
>>> batch_sentences = [
... "But what about second breakfast?",
... "Don't think he knows about second breakfast, Pip.",
... "What about elevensies?",
... ]
>>> encoded_input = tokenizer(batch, padding=True, truncation=True, return_tensors="pt")
>>> print(encoded_input)
{'input_ids': tensor([[ 101, 153, 7719, 21490, 1122, 1114, 9582, 1623, 102],
[ 101, 5226, 1122, 9649, 1199, 2610, 1236, 102, 0]]),
'token_type_ids': tensor([[0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0]]),
'attention_mask': tensor([[1, 1, 1, 1, 1, 1, 1, 1, 1],
[1, 1, 1, 1, 1, 1, 1, 1, 0]])}
===PT-TF-SPLIT===
>>> batch_sentences = [
... "But what about second breakfast?",
... "Don't think he knows about second breakfast, Pip.",
... "What about elevensies?",
... ]
>>> encoded_input = tokenizer(batch, padding=True, truncation=True, return_tensors="tf")
>>> print(encoded_input)
{'input_ids': <tf.Tensor: shape=(2, 9), dtype=int32, numpy=
array([[ 101, 153, 7719, 21490, 1122, 1114, 9582, 1623, 102],
[ 101, 5226, 1122, 9649, 1199, 2610, 1236, 102, 0]],
dtype=int32)>,
'token_type_ids': <tf.Tensor: shape=(2, 9), dtype=int32, numpy=
array([[0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0]], dtype=int32)>,
'attention_mask': <tf.Tensor: shape=(2, 9), dtype=int32, numpy=
array([[1, 1, 1, 1, 1, 1, 1, 1, 1],
[1, 1, 1, 1, 1, 1, 1, 1, 0]], dtype=int32)>}
```
## Audio
Las entradas de audio se preprocesan de forma diferente a las entradas textuales, pero el objetivo final es el mismo: crear secuencias numéricas que el modelo pueda entender. Un [extractor de características](main_classes/feature_extractor) (o feature extractor en inglés) está diseñado para extraer características de datos provenientes de imágenes o audio sin procesar y convertirlos en tensores. Antes de empezar, instala 🤗 Datasets para cargar un dataset de audio para experimentar:
```bash
pip install datasets
```
Carga la tarea de detección de palabras clave del benchmark [SUPERB](https://huggingface.co/datasets/superb) (consulta el [tutorial 🤗 Dataset](https://huggingface.co/docs/datasets/load_hub) para que obtengas más detalles sobre cómo cargar un dataset):
```py
>>> from datasets import load_dataset, Audio
>>> dataset = load_dataset("superb", "ks")
```
Accede al primer elemento de la columna `audio` para echar un vistazo a la entrada. Al llamar a la columna `audio` se cargará y volverá a muestrear automáticamente el archivo de audio:
```py
>>> dataset["train"][0]["audio"]
{'array': array([ 0. , 0. , 0. , ..., -0.00592041,
-0.00405884, -0.00253296], dtype=float32),
'path': '/root/.cache/huggingface/datasets/downloads/extracted/05734a36d88019a09725c20cc024e1c4e7982e37d7d55c0c1ca1742ea1cdd47f/_background_noise_/doing_the_dishes.wav',
'sampling_rate': 16000}
```
Esto devuelve tres elementos:
* `array` es la señal de voz cargada - y potencialmente remuestreada - como un array 1D.
* `path` apunta a la ubicación del archivo de audio.
* `sampling_rate` se refiere a cuántos puntos de datos de la señal de voz se miden por segundo.
### Resample
Para este tutorial, se utilizará el modelo [Wav2Vec2](https://huggingface.co/facebook/wav2vec2-base). Como puedes ver en la model card, el modelo Wav2Vec2 está pre-entrenado en audio de voz muestreado a 16kHz. Es importante que la tasa de muestreo de tus datos de audio coincida con la tasa de muestreo del dataset utilizado para pre-entrenar el modelo. Si la tasa de muestreo de tus datos no es la misma, deberás volver a muestrear tus datos de audio.
Por ejemplo, carga el dataset [LJ Speech](https://huggingface.co/datasets/lj_speech) que tiene una tasa de muestreo de 22050kHz. Para utilizar el modelo Wav2Vec2 con este dataset, reduce la tasa de muestreo a 16kHz:
```py
>>> lj_speech = load_dataset("lj_speech", split="train")
>>> lj_speech[0]["audio"]
{'array': array([-7.3242188e-04, -7.6293945e-04, -6.4086914e-04, ...,
7.3242188e-04, 2.1362305e-04, 6.1035156e-05], dtype=float32),
'path': '/root/.cache/huggingface/datasets/downloads/extracted/917ece08c95cf0c4115e45294e3cd0dee724a1165b7fc11798369308a465bd26/LJSpeech-1.1/wavs/LJ001-0001.wav',
'sampling_rate': 22050}
```
1. Usa el método 🤗 Datasets' [`cast_column`](https://huggingface.co/docs/datasets/package_reference/main_classes#datasets.Dataset.cast_column) para reducir la tasa de muestreo a 16kHz:
```py
>>> lj_speech = lj_speech.cast_column("audio", Audio(sampling_rate=16_000))
```
2. Carga el archivo de audio:
```py
>>> lj_speech[0]["audio"]
{'array': array([-0.00064146, -0.00074657, -0.00068768, ..., 0.00068341,
0.00014045, 0. ], dtype=float32),
'path': '/root/.cache/huggingface/datasets/downloads/extracted/917ece08c95cf0c4115e45294e3cd0dee724a1165b7fc11798369308a465bd26/LJSpeech-1.1/wavs/LJ001-0001.wav',
'sampling_rate': 16000}
```
Como puedes ver, el `sampling_rate` se ha reducido a 16kHz. Ahora que sabes cómo funciona el resampling, volvamos a nuestro ejemplo anterior con el dataset SUPERB.
### Extractor de características
El siguiente paso es cargar un extractor de características para normalizar y aplicar el pad a la entrada. Cuando se aplica padding a los datos textuales, se añade un "0" para las secuencias más cortas. La misma idea se aplica a los datos de audio y el extractor de características de audio añadirá un "0" - interpretado como silencio - al "array".
Carga el extractor de características con [`AutoFeatureExtractor.from_pretrained`]:
```py
>>> from transformers import AutoFeatureExtractor
>>> feature_extractor = AutoFeatureExtractor.from_pretrained("facebook/wav2vec2-base")
```
Pasa el `array` de audio al extractor de características. También te recomendamos añadir el argumento `sampling_rate` en el extractor de características para poder depurar mejor los errores silenciosos que puedan producirse.
```py
>>> audio_input = [dataset["train"][0]["audio"]["array"]]
>>> feature_extractor(audio_input, sampling_rate=16000)
{'input_values': [array([ 0.00045439, 0.00045439, 0.00045439, ..., -0.1578519 , -0.10807519, -0.06727459], dtype=float32)]}
```
### Pad y truncamiento
Al igual que el tokenizador, puedes aplicar padding o truncamiento para manejar secuencias variables en un batch. Fíjate en la longitud de la secuencia de estas dos muestras de audio:
```py
>>> dataset["train"][0]["audio"]["array"].shape
(1522930,)
>>> dataset["train"][1]["audio"]["array"].shape
(988891,)
```
Como puedes ver, el `sampling_rate` se ha reducido a 16kHz.
```py
>>> def preprocess_function(examples):
... audio_arrays = [x["array"] for x in examples["audio"]]
... inputs = feature_extractor(
... audio_arrays,
... sampling_rate=16000,
... padding=True,
... max_length=1000000,
... truncation=True,
... )
... return inputs
```
Aplica la función a los primeros ejemplos del dataset:
```py
>>> processed_dataset = preprocess_function(dataset["train"][:5])
```
Ahora echa un vistazo a las longitudes de las muestras procesadas:
```py
>>> processed_dataset["input_values"][0].shape
(1000000,)
>>> processed_dataset["input_values"][1].shape
(1000000,)
```
Las longitudes de las dos primeras muestras coinciden ahora con la longitud máxima especificada.
## Visión
También se utiliza un extractor de características para procesar imágenes para tareas de visión por computadora. Una vez más, el objetivo es convertir la imagen en bruto en un batch de tensores como entrada.
Vamos a cargar el dataset [food101](https://huggingface.co/datasets/food101) para este tutorial. Usa el parámetro 🤗 Datasets `split` para cargar solo una pequeña muestra de la división de entrenamiento ya que el dataset es bastante grande:
```py
>>> from datasets import load_dataset
>>> dataset = load_dataset("food101", split="train[:100]")
```
A continuación, observa la imagen con la función 🤗 Datasets [`Image`](https://huggingface.co/docs/datasets/package_reference/main_classes?highlight=image#datasets.Image):
```py
>>> dataset[0]["image"]
```
### Extractor de características
Carga el extractor de características con [`AutoFeatureExtractor.from_pretrained`]:
```py
>>> from transformers import AutoFeatureExtractor
>>> feature_extractor = AutoFeatureExtractor.from_pretrained("google/vit-base-patch16-224")
```
### Aumento de Datos
Para las tareas de visión por computadora es común añadir algún tipo de aumento de datos (o data augmentation) a las imágenes como parte del preprocesamiento. Puedes añadir el método de aumento de datos con cualquier librería que quieras, pero en este tutorial utilizarás el módulo [`transforms`](https://pytorch.org/vision/stable/transforms.html) de torchvision.
1. Normaliza la imagen y utiliza [`Compose`](https://pytorch.org/vision/master/generated/torchvision.transforms.Compose.html) para encadenar algunas transformaciones - [`RandomResizedCrop`](https://pytorch.org/vision/main/generated/torchvision.transforms.RandomResizedCrop.html) y [`ColorJitter`](https://pytorch.org/vision/main/generated/torchvision.transforms.ColorJitter.html) - juntas:
```py
>>> from torchvision.transforms import Compose, Normalize, RandomResizedCrop, ColorJitter, ToTensor
>>> normalize = Normalize(mean=feature_extractor.image_mean, std=feature_extractor.image_std)
>>> _transforms = Compose(
... [RandomResizedCrop(feature_extractor.size), ColorJitter(brightness=0.5, hue=0.5), ToTensor(), normalize]
... )
```
2. El modelo acepta [`pixel_values`](model_doc/visionencoderdecoder#transformers.VisionEncoderDecoderModel.forward.pixel_values) como entrada. Este valor es generado por el extractor de características. Crea una función que genere `pixel_values` a partir de las transformaciones:
```py
>>> def transforms(examples):
... examples["pixel_values"] = [_transforms(image.convert("RGB")) for image in examples["image"]]
... return examples
```
3. A continuación, utiliza 🤗 Datasets [`set_transform`](https://huggingface.co/docs/datasets/process#format-transform) para aplicar las transformaciones sobre la marcha:
```py
>>> dataset.set_transform(transforms)
```
4. Ahora, cuando accedes a la imagen, observarás que el extractor de características ha añadido a la entrada del modelo `pixel_values`:
```py
>>> dataset[0]["image"]
{'image': <PIL.JpegImagePlugin.JpegImageFile image mode=RGB size=384x512 at 0x7F1A7B0630D0>,
'label': 6,
'pixel_values': tensor([[[ 0.0353, 0.0745, 0.1216, ..., -0.9922, -0.9922, -0.9922],
[-0.0196, 0.0667, 0.1294, ..., -0.9765, -0.9843, -0.9922],
[ 0.0196, 0.0824, 0.1137, ..., -0.9765, -0.9686, -0.8667],
...,
[ 0.0275, 0.0745, 0.0510, ..., -0.1137, -0.1216, -0.0824],
[ 0.0667, 0.0824, 0.0667, ..., -0.0588, -0.0745, -0.0980],
[ 0.0353, 0.0353, 0.0431, ..., -0.0039, -0.0039, -0.0588]],
[[ 0.2078, 0.2471, 0.2863, ..., -0.9451, -0.9373, -0.9451],
[ 0.1608, 0.2471, 0.3098, ..., -0.9373, -0.9451, -0.9373],
[ 0.2078, 0.2706, 0.3020, ..., -0.9608, -0.9373, -0.8275],
...,
[-0.0353, 0.0118, -0.0039, ..., -0.2392, -0.2471, -0.2078],
[ 0.0196, 0.0353, 0.0196, ..., -0.1843, -0.2000, -0.2235],
[-0.0118, -0.0039, -0.0039, ..., -0.0980, -0.0980, -0.1529]],
[[ 0.3961, 0.4431, 0.4980, ..., -0.9216, -0.9137, -0.9216],
[ 0.3569, 0.4510, 0.5216, ..., -0.9059, -0.9137, -0.9137],
[ 0.4118, 0.4745, 0.5216, ..., -0.9137, -0.8902, -0.7804],
...,
[-0.2314, -0.1922, -0.2078, ..., -0.4196, -0.4275, -0.3882],
[-0.1843, -0.1686, -0.2000, ..., -0.3647, -0.3804, -0.4039],
[-0.1922, -0.1922, -0.1922, ..., -0.2941, -0.2863, -0.3412]]])}
```
Este es el aspecto de la imagen después de preprocesarla. Como era de esperar por las transformaciones aplicadas, la imagen ha sido recortada aleatoriamente y sus propiedades de color son diferentes.
```py
>>> import numpy as np
>>> import matplotlib.pyplot as plt
>>> img = dataset[0]["pixel_values"]
>>> plt.imshow(img.permute(1, 2, 0))
```
## Multimodal
Para las tareas multimodales utilizarás una combinación de todo lo que has aprendido hasta ahora y aplicarás tus habilidades a una tarea de reconocimiento automático de voz (ASR). Esto significa que necesitarás un:
* Extractor de características para preprocesar los datos de audio.
* Un tokenizador para procesar el texto.
Volvamos al dataset [LJ Speech](https://huggingface.co/datasets/lj_speech):
```py
>>> from datasets import load_dataset
>>> lj_speech = load_dataset("lj_speech", split="train")
```
Suponiendo que te interesan principalmente las columnas `audio` y `texto`, elimina las demás columnas:
```py
>>> lj_speech = lj_speech.map(remove_columns=["file", "id", "normalized_text"])
```
Ahora echa un vistazo a las columnas `audio` y `texto`:
```py
>>> lj_speech[0]["audio"]
{'array': array([-7.3242188e-04, -7.6293945e-04, -6.4086914e-04, ...,
7.3242188e-04, 2.1362305e-04, 6.1035156e-05], dtype=float32),
'path': '/root/.cache/huggingface/datasets/downloads/extracted/917ece08c95cf0c4115e45294e3cd0dee724a1165b7fc11798369308a465bd26/LJSpeech-1.1/wavs/LJ001-0001.wav',
'sampling_rate': 22050}
>>> lj_speech[0]["text"]
'Printing, in the only sense with which we are at present concerned, differs from most if not from all the arts and crafts represented in the Exhibition'
```
Recuerda la sección anterior sobre el procesamiento de datos de audio, siempre debes [volver a muestrear](preprocessing#audio) la tasa de muestreo de tus datos de audio para que coincida con la tasa de muestreo del dataset utilizado para preentrenar un modelo:
```py
>>> lj_speech = lj_speech.cast_column("audio", Audio(sampling_rate=16_000))
```
### Processor
Un processor combina un extractor de características y un tokenizador. Cargue un procesador con [`AutoProcessor.from_pretrained`]:
```py
>>> from transformers import AutoProcessor
>>> processor = AutoProcessor.from_pretrained("facebook/wav2vec2-base-960h")
```
1. Crea una función para procesar los datos de audio en `input_values`, y tokeniza el texto en `labels`. Estas son las entradas del modelo:
```py
>>> def prepare_dataset(example):
... audio = example["audio"]
... example.update(processor(audio=audio["array"], text=example["text"], sampling_rate=16000))
... return example
```
2. Aplica la función `prepare_dataset` a una muestra:
```py
>>> prepare_dataset(lj_speech[0])
```
Observa que el método processor ha añadido `input_values` y `labels`. La tasa de muestreo también se ha reducido correctamente a 16kHz.
Genial, ahora deberías ser capaz de preprocesar datos para cualquier modalidad e incluso combinar diferentes modalidades. En el siguiente tutorial, aprenderás aplicar fine tuning a un modelo en tus datos recién preprocesados.
## Todo lo que siempre quisiste saber sobre el padding y el truncamiento
Hemos visto los comandos que funcionarán para la mayoría de los casos (hacer pad a tu batch teniendo en cuenta la longitud de la frase máxima y
truncar a la longitud máxima que el modelo puede aceptar). Sin embargo, la API admite más estrategias si las necesitas. Los
tres argumentos que necesitas conocer para ello son `padding`, `truncation` y `max_length`.
- `padding` controla el aplicarme padding al texto. Puede ser un booleano o una cadena que debe ser:
- `True` o `'longest'` para aplicar el pad hasta la secuencia más larga del batch (no apliques el padding si sólo le proporcionas
una sola secuencia).
- `'max_length'` para aplicar el pad hasta la longitud especificada por el argumento `max_length` o la longitud máxima aceptada
por el modelo si no le proporcionas `longitud_máxima` (`longitud_máxima=None`). Si sólo le proporcionas una única secuencia
se le aplicará el padding.
`False` o `'do_not_pad'` para no aplicar pad a las secuencias. Como hemos visto antes, este es el comportamiento por
defecto.
- `truncation` controla el truncamiento. Puede ser un booleano o una string que debe ser:
- `True` o `'longest_first'` truncan hasta la longitud máxima especificada por el argumento `max_length` o
la longitud máxima aceptada por el modelo si no le proporcionas `max_length` (`max_length=None`). Esto
truncará token por token, eliminando un token de la secuencia más larga del par hasta alcanzar la longitud
adecuada.
- `'only_second'` trunca hasta la longitud máxima especificada por el argumento `max_length` o la
longitud máxima aceptada por el modelo si no le proporcionas `max_length` (`max_length=None`). Esto sólo truncará
la segunda frase de un par si le proporcionas un par de secuencias (o un batch de pares de secuencias).
- `'only_first'` trunca hasta la longitud máxima especificada por el argumento `max_length` o la longitud máxima
aceptada por el modelo si no se proporciona `max_length` (`max_length=None`). Esto sólo truncará
la primera frase de un par si se proporciona un par de secuencias (o un lote de pares de secuencias).
- `False` o `'do_not_truncate'` para no truncar las secuencias. Como hemos visto antes, este es el comportamiento
por defecto.
- `max_length` para controlar la longitud del padding/truncamiento. Puede ser un número entero o `None`, en cuyo caso
será por defecto la longitud máxima que el modelo puede aceptar. Si el modelo no tiene una longitud máxima de entrada específica, el
padding/truncamiento a `longitud_máxima` se desactiva.
A continuación te mostramos en una tabla que resume la forma recomendada de configurar el padding y el truncamiento. Si utilizas un par de secuencias de entrada en
algunos de los siguientes ejemplos, puedes sustituir `truncation=True` por una `STRATEGY` seleccionada en
`['only_first', 'only_second', 'longest_first']`, es decir, `truncation='only_second'` o `truncation= 'longest_first'` para controlar cómo se truncan ambas secuencias del par como se ha detallado anteriormente.
| Truncation | Padding | Instrucciones |
|--------------------------------------|-----------------------------------|---------------------------------------------------------------------------------------------|
| no truncation | no padding | `tokenizer(batch_sentences)` |
| | padding secuencia max del batch | `tokenizer(batch_sentences, padding=True)` or |
| | | `tokenizer(batch_sentences, padding='longest')` |
| | padding long max de input model | `tokenizer(batch_sentences, padding='max_length')` |
| | padding a una long especifica | `tokenizer(batch_sentences, padding='max_length', max_length=42)` |
| truncation long max del input model | no padding | `tokenizer(batch_sentences, truncation=True)` or |
| | | `tokenizer(batch_sentences, truncation=STRATEGY)` |
| | padding secuencia max del batch | `tokenizer(batch_sentences, padding=True, truncation=True)` or |
| | | `tokenizer(batch_sentences, padding=True, truncation=STRATEGY)` |
| | padding long max de input model | `tokenizer(batch_sentences, padding='max_length', truncation=True)` or |
| | | `tokenizer(batch_sentences, padding='max_length', truncation=STRATEGY)` |
| | padding a una long especifica | Not possible |
| truncation a una long especifica | no padding | `tokenizer(batch_sentences, truncation=True, max_length=42)` or |
| | | `tokenizer(batch_sentences, truncation=STRATEGY, max_length=42)` |
| | padding secuencia max del batch | `tokenizer(batch_sentences, padding=True, truncation=True, max_length=42)` or |
| | | `tokenizer(batch_sentences, padding=True, truncation=STRATEGY, max_length=42)` |
| | padding long max de input model | Not possible |
| | padding a una long especifica | `tokenizer(batch_sentences, padding='max_length', truncation=True, max_length=42)` or |
| | | `tokenizer(batch_sentences, padding='max_length', truncation=STRATEGY, max_length=42)` |
| transformers/docs/source/es/preprocessing.md/0 | {
"file_path": "transformers/docs/source/es/preprocessing.md",
"repo_id": "transformers",
"token_count": 13019
} | 259 |
<!--Copyright 2022 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Istanziare un big model
Quando vuoi utilizzare un modello preaddestrato (pretrained) molto grande, una sfida è minimizzare l'uso della RAM. Il workflow classico
in PyTorch è:
1. Crea il tuo modello con pesi casuali (random weights).
2. Carica i tuoi pesi preaddestrati.
3. Inserisci i pesi preaddestrati nel tuo modello casuale.
I passi 1 e 2 una versione completa del modello in memoria, in molti casi non è un problema, ma se il modello inizia a pesare diversi GigaBytes, queste due copie possono sturare la nostra RAM. Ancora peggio, se stai usando `torch.distributed` per seguire l'addestramento (training) in distribuito, ogni processo caricherà il modello preaddestrato e memorizzerà queste due copie nella RAM.
<Tip>
Nota che il modello creato casualmente è inizializzato con tensori "vuoti", che occupano spazio in memoria ma senza riempirlo (quindi i valori casuali sono quelli che si trovavano in questa porzione di memoria in un determinato momento). L'inizializzazione casuale che segue la distribuzione appropriata per il tipo di modello/parametri istanziato (come la distribuzione normale per le istanze) è eseguito solo dopo il passaggio 3 sui pesi non inizializzati, per essere più rapido possibile!
</Tip>
In questa guida, esploreremo le soluzioni che Transformers offre per affrontare questo problema. C'è da tenere in conto che questa è un'area in cui si sta attualmente sviluppando, quindi le API spiegate qui possono variare velocemente in futuro.
## Checkpoints condivisi
Dalla versione 4.18.0, i checkpoints dei modelli che occupano più di 10GB di spazio vengono automaticamente frammentati in più parti. Per quanto riguarda la possibilità di avere un unico checkpoint quando si utilizza `model.save_pretrained(save_dir)`, si hanno diversi checkpoint parziali (ognuno con dimensione < 10GB) e un indice che mappa i nomi dei parametri ai file in cui sono memorizzati.
Puoi controllare la dimensione massima dopo la frammentazione con il parametro `max_shard_size`, nel prossimo esempio, useremo modelli di dimensioni normali con frammenti di piccoli dimensioni: prendiamo un modello BERT classico.
```py
from transformers import AutoModel
model = AutoModel.from_pretrained("google-bert/bert-base-cased")
```
Se tu salvi usando [`~PreTrainedModel.save_pretrained`], avrai una nuova cartella con due file: il config del modello e i suoi pesi:
```py
>>> import os
>>> import tempfile
>>> with tempfile.TemporaryDirectory() as tmp_dir:
... model.save_pretrained(tmp_dir)
... print(sorted(os.listdir(tmp_dir)))
['config.json', 'pytorch_model.bin']
```
Adesso usiamo una dimensione massima di frammentazione di 200MB:
```py
>>> with tempfile.TemporaryDirectory() as tmp_dir:
... model.save_pretrained(tmp_dir, max_shard_size="200MB")
... print(sorted(os.listdir(tmp_dir)))
['config.json', 'pytorch_model-00001-of-00003.bin', 'pytorch_model-00002-of-00003.bin', 'pytorch_model-00003-of-00003.bin', 'pytorch_model.bin.index.json']
```
In aggiunta alla configurazione del modello, vediamo tre differenti file dei pesi, e un file `index.json` che è il nostro indice. Un checkpoint può essere ricaricato totalmente usando il metodo [`~PreTrainedModel.from_pretrained`]:
```py
>>> with tempfile.TemporaryDirectory() as tmp_dir:
... model.save_pretrained(tmp_dir, max_shard_size="200MB")
... new_model = AutoModel.from_pretrained(tmp_dir)
```
Il vantaggio principale di applicare questo metodo per modelli grandi è che durante il passo 2 del workflow illustrato in precedenza, ogni frammento del checkpoint viene caricato dopo il precedente, limitando l'utilizzo della RAM alla dimensione del modello più la dimensione del frammento più grande.
Dietro le quinte, il file indice è utilizzato per determinare quali chiavi sono nel checkpoint, e dove i corrispondenti pesi sono memorizzati. Possiamo caricare l'indice come un qualsiasi json e ottenere un dizionario:
```py
>>> import json
>>> with tempfile.TemporaryDirectory() as tmp_dir:
... model.save_pretrained(tmp_dir, max_shard_size="200MB")
... with open(os.path.join(tmp_dir, "pytorch_model.bin.index.json"), "r") as f:
... index = json.load(f)
>>> print(index.keys())
dict_keys(['metadata', 'weight_map'])
```
I metadati consistono solo nella dimensione totale del modello per ora. Abbiamo in programma di aggiungere altre informazioni in futuro:
```py
>>> index["metadata"]
{'total_size': 433245184}
```
La mappa dei pesi è la parte principale di questo indice, che mappa ogni nome dei parametri (si trova solitamente nei modelli PyTorch come `state_dict`) al file in cui è memorizzato:
```py
>>> index["weight_map"]
{'embeddings.LayerNorm.bias': 'pytorch_model-00001-of-00003.bin',
'embeddings.LayerNorm.weight': 'pytorch_model-00001-of-00003.bin',
...
```
Se vuoi caricare direttamente un checkpoint frammentato in un modello senza usare [`~PreTrainedModel.from_pretrained`] (come si farebbe con `model.load_state_dict()` per un checkpoint completo) devi usare [`~modeling_utils.load_sharded_checkpoint`]:
```py
>>> from transformers.modeling_utils import load_sharded_checkpoint
>>> with tempfile.TemporaryDirectory() as tmp_dir:
... model.save_pretrained(tmp_dir, max_shard_size="200MB")
... load_sharded_checkpoint(model, tmp_dir)
```
## Caricamento low memory
Frammentare i checkpoint l'utilizzo di memoria al passo 2 del workflow citato in precedenza, ma per utilizzare questo modello in un ambiente con poca memoria, consigliamo di utilizzare i nostri strumenti basati sulla libreria Accelerate.
Per ulteriori informazioni, leggere la seguente guida: [Large model loading using Accelerate](./main_classes/model#large-model-loading) | transformers/docs/source/it/big_models.md/0 | {
"file_path": "transformers/docs/source/it/big_models.md",
"repo_id": "transformers",
"token_count": 2214
} | 260 |
<!--Copyright 2022 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Addestramento efficiente su CPU
Questa guida si concentra su come addestrare in maniera efficiente grandi modelli su CPU.
## Mixed precision con IPEX
IPEX è ottimizzato per CPU con AVX-512 o superiore, e funziona per le CPU con solo AVX2. Pertanto, si prevede che le prestazioni saranno più vantaggiose per le le CPU Intel con AVX-512 o superiori, mentre le CPU con solo AVX2 (ad esempio, le CPU AMD o le CPU Intel più vecchie) potrebbero ottenere prestazioni migliori con IPEX, ma non sono garantite. IPEX offre ottimizzazioni delle prestazioni per l'addestramento della CPU sia con Float32 che con BFloat16. L'uso di BFloat16 è l'argomento principale delle seguenti sezioni.
Il tipo di dati a bassa precisione BFloat16 è stato supportato in modo nativo su 3rd Generation Xeon® Scalable Processors (aka Cooper Lake) con AVX512 e sarà supportata dalla prossima generazione di Intel® Xeon® Scalable Processors con Intel® Advanced Matrix Extensions (Intel® AMX) instruction set con prestazioni ulteriormente migliorate. L'Auto Mixed Precision per il backende della CPU è stato abilitato da PyTorch-1.10. allo stesso tempo, il supporto di Auto Mixed Precision con BFloat16 per CPU e l'ottimizzazione degli operatori BFloat16 è stata abilitata in modo massiccio in Intel® Extension per PyTorch, and parzialmente aggiornato al branch master di PyTorch. Gli utenti possono ottenere prestazioni migliori ed users experience con IPEX Auto Mixed Precision..
Vedi informazioni più dettagliate su [Auto Mixed Precision](https://intel.github.io/intel-extension-for-pytorch/cpu/latest/tutorials/features/amp.html).
### Installazione di IPEX:
Il rilascio di IPEX segue quello di PyTorch, da installare via pip:
| PyTorch Version | IPEX version |
| :---------------: | :----------: |
| 1.13 | 1.13.0+cpu |
| 1.12 | 1.12.300+cpu |
| 1.11 | 1.11.200+cpu |
| 1.10 | 1.10.100+cpu |
```bash
pip install intel_extension_for_pytorch==<version_name> -f https://developer.intel.com/ipex-whl-stable-cpu
```
Vedi altri approcci per [IPEX installation](https://intel.github.io/intel-extension-for-pytorch/cpu/latest/tutorials/installation.html).
### Utilizzo nel Trainer
Per abilitare la auto mixed precision con IPEX in Trainer, l'utende dovrebbe aggiungere `use_ipex`, `bf16` e `no_cuda` negli argomenti del comando di addestramento.
Vedi un sempio di un caso d'uso [Transformers question-answering](https://github.com/huggingface/transformers/tree/main/examples/pytorch/question-answering)
- Training with IPEX using BF16 auto mixed precision on CPU:
<pre> python run_qa.py \
--model_name_or_path google-bert/bert-base-uncased \
--dataset_name squad \
--do_train \
--do_eval \
--per_device_train_batch_size 12 \
--learning_rate 3e-5 \
--num_train_epochs 2 \
--max_seq_length 384 \
--doc_stride 128 \
--output_dir /tmp/debug_squad/ \
<b>--use_ipex \</b>
<b>--bf16 --no_cuda</b></pre>
### Esempi pratici
Blog: [Accelerating PyTorch Transformers with Intel Sapphire Rapids](https://huggingface.co/blog/intel-sapphire-rapids)
| transformers/docs/source/it/perf_train_cpu.md/0 | {
"file_path": "transformers/docs/source/it/perf_train_cpu.md",
"repo_id": "transformers",
"token_count": 1310
} | 261 |
<!--
著作権 2023 The HuggingFace Team。全著作権所有。
Apache License、Version 2.0（以下「ライセンス」と呼びます）に基づくライセンスで、
ライセンスに従わない限り、このファイルを使用できません。
ライセンスのコピーは以下から入手できます：
http://www.apache.org/licenses/LICENSE-2.0
適用法に従うか、書面による同意がある限り、ライセンスの下でソフトウェアは配布されます。
ライセンスに基づく特定の言語での条件を確認するか、ライセンスを参照してください。
このファイルはMarkdown形式ですが、doc-builder（MDXに類似したもの）の特定の構文を含んでおり、
お使いのMarkdownビューアで正しくレンダリングされない場合があります。
-->
# AutoClassを使用して事前学習済みインスタンスをロードする
さまざまなTransformerアーキテクチャが存在するため、自分のタスクに合ったモデルを作成するのは難しいことがあります。
🤗 Transformersのコア哲学の一環として、ライブラリを使用しやすく、シンプルで柔軟にするために、
`AutoClass`は与えられたチェックポイントから正しいアーキテクチャを自動的に推論してロードします。
`from_pretrained()`メソッドを使用すると、事前学習済みモデルを素早くロードできるため、モデルをゼロからトレーニングするために時間とリソースを費やす必要がありません。
この種のチェックポイントに依存しないコードを生成することは、
コードが1つのチェックポイントで動作すれば、アーキテクチャが異なっていても、同じタスクに向けてトレーニングされた場合は別のチェックポイントでも動作することを意味します。
<Tip>
アーキテクチャはモデルの骨格を指し、チェックポイントは特定のアーキテクチャの重みです。
たとえば、[BERT](https://huggingface.co/google-bert/bert-base-uncased)はアーキテクチャであり、`google-bert/bert-base-uncased`はチェックポイントです。
モデルはアーキテクチャまたはチェックポイントのどちらを指す一般的な用語です。
</Tip>
このチュートリアルでは、以下を学習します：
* 事前学習済みトークナイザをロードする。
* 事前学習済み画像プロセッサをロードする。
* 事前学習済み特徴量抽出器をロードする。
* 事前学習済みプロセッサをロードする。
* 事前学習済みモデルをロードする。
## AutoTokenizer
ほとんどのNLPタスクはトークナイザで始まります。トークナイザは入力をモデルで処理できる形式に変換します。
[`AutoTokenizer.from_pretrained`]を使用してトークナイザをロードします：
```py
>>> from transformers import AutoTokenizer
>>> tokenizer = AutoTokenizer.from_pretrained("google-bert/bert-base-uncased")
```
次に、以下のように入力をトークナイズします：
```py
>>> sequence = "In a hole in the ground there lived a hobbit."
>>> print(tokenizer(sequence))
{'input_ids': [101, 1999, 1037, 4920, 1999, 1996, 2598, 2045, 2973, 1037, 7570, 10322, 4183, 1012, 102],
'token_type_ids': [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
'attention_mask': [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]}
```
## AutoImageProcessor
ビジョンタスクの場合、画像プロセッサが画像を正しい入力形式に変換します。
```py
>>> from transformers import AutoImageProcessor
>>> image_processor = AutoImageProcessor.from_pretrained("google/vit-base-patch16-224")
```
## AutoFeatureExtractor
オーディオタスクの場合、特徴量抽出器がオーディオ信号を正しい入力形式に変換します。
[`AutoFeatureExtractor.from_pretrained`]を使用して特徴量抽出器をロードします.
```py
>>> from transformers import AutoFeatureExtractor
>>> feature_extractor = AutoFeatureExtractor.from_pretrained(
... "ehcalabres/wav2vec2-lg-xlsr-en-speech-emotion-recognition"
... )
```
## AutoProcessor
マルチモーダルタスクの場合、2つの前処理ツールを組み合わせるプロセッサが必要です。たとえば、
[LayoutLMV2](model_doc/layoutlmv2)モデルは画像を処理するための画像プロセッサとテキストを処理するためのトークナイザが必要です。
プロセッサはこれらの両方を組み合わせます。
[`AutoProcessor.from_pretrained`]を使用してプロセッサをロードします：
```py
>>> from transformers import AutoProcessor
>>> processor = AutoProcessor.from_pretrained("microsoft/layoutlmv2-base-uncased")
```
## AutoModel
<frameworkcontent>
<pt>
最後に、`AutoModelFor`クラスは特定のタスクに対して事前学習済みモデルをロードできます（使用可能なタスクの完全な一覧については[こちら](model_doc/auto)を参照）。
たとえば、[`AutoModelForSequenceClassification.from_pretrained`]を使用してシーケンス分類用のモデルをロードできます：
```py
>>> from transformers import AutoModelForSequenceClassification
>>> model = AutoModelForSequenceClassification.from_pretrained("distilbert/distilbert-base-uncased")
```
同じチェックポイントを再利用して異なるタスクのアーキテクチャをロードできます：
```py
>>> from transformers import AutoModelForTokenClassification
>>> model = AutoModelForTokenClassification.from_pretrained("distilbert/distilbert-base-uncased")
```
<Tip warning={true}>
PyTorchモデルの場合、 `from_pretrained()`メソッドは内部で`torch.load()`を使用し、内部的には`pickle`を使用しており、セキュリティの問題が知られています。
一般的には、信頼性のないソースから取得した可能性があるモデルや改ざんされた可能性のあるモデルをロードしないでください。
このセキュリティリスクは、`Hugging Face Hub`でホストされている公開モデルに対して部分的に緩和されており、各コミットでマルウェアのスキャンが行われています。
GPGを使用した署名済みコミットの検証などのベストプラクティスについては、Hubのドキュメンテーションを参照してください。
TensorFlowおよびFlaxのチェックポイントには影響がなく、`from_pretrained`メソッドの`from_tf`および`from_flax`引数を使用してPyTorchアーキテクチャ内でロードできます。
</Tip>
一般的に、事前学習済みモデルのインスタンスをロードするために`AutoTokenizer`クラスと`AutoModelFor`クラスの使用をお勧めします。
これにより、常に正しいアーキテクチャをロードできます。
次の[tutorial](preprocessing)では、新しくロードしたトークナイザ、画像プロセッサ、特徴量抽出器、およびプロセッサを使用して、ファインチューニング用にデータセットを前処理する方法を学びます。
</pt>
<tf>
最後に、`TFAutoModelFor`クラスは特定のタスクに対して事前学習済みモデルをロードできます（使用可能なタスクの完全な一覧についてはこちらを参照）。
たとえば、[`TFAutoModelForSequenceClassification.from_pretrained`]を使用してシーケンス分類用のモデルをロードできます：
```py
>>> from transformers import TFAutoModelForSequenceClassification
>>> model = TFAutoModelForSequenceClassification.from_pretrained("distilbert/distilbert-base-uncased")
```
同じチェックポイントを再利用して異なるタスクのアーキテクチャをロードできます：
```py
>>> from transformers import TFAutoModelForTokenClassification
>>> model = TFAutoModelForTokenClassification.from_pretrained("distilbert/distilbert-base-uncased")
```
一般的には、事前学習済みモデルのインスタンスをロードするために`AutoTokenizer`クラスと`TFAutoModelFor`クラスの使用をお勧めします。
これにより、常に正しいアーキテクチャをロードできます。
次の[tutorial](preproccesing)では、新しくロードしたトークナイザ、画像プロセッサ、特徴量抽出器、およびプロセッサを使用して、ファインチューニング用にデータセットを前処理する方法を学びます。
</tf>
</frameworkcontent> | transformers/docs/source/ja/autoclass_tutorial.md/0 | {
"file_path": "transformers/docs/source/ja/autoclass_tutorial.md",
"repo_id": "transformers",
"token_count": 3607
} | 262 |
<!--Copyright 2020 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Auto Classes
多くの場合、`from_pretrained()`メソッドに与えられた事前学習済みモデルの名前やパスから、使用したいアーキテクチャを推測することができます。自動クラスはこの仕事をあなたに代わって行うためにここにありますので、事前学習済みの重み/設定/語彙への名前/パスを与えると自動的に関連するモデルを取得できます。
[`AutoConfig`]、[`AutoModel`]、[`AutoTokenizer`]のいずれかをインスタンス化すると、関連するアーキテクチャのクラスが直接作成されます。例えば、
```python
model = AutoModel.from_pretrained("google-bert/bert-base-cased")
```
これは[`BertModel`]のインスタンスであるモデルを作成します。
各タスクごと、そして各バックエンド（PyTorch、TensorFlow、またはFlax）ごとに`AutoModel`のクラスが存在します。
## 自動クラスの拡張
それぞれの自動クラスには、カスタムクラスで拡張するためのメソッドがあります。例えば、`NewModel`というモデルのカスタムクラスを定義した場合、`NewModelConfig`を確保しておけばこのようにして自動クラスに追加することができます：
```python
from transformers import AutoConfig, AutoModel
AutoConfig.register("new-model", NewModelConfig)
AutoModel.register(NewModelConfig, NewModel)
```
その後、通常どおりauto classesを使用することができるようになります！
<Tip warning={true}>
あなたの`NewModelConfig`が[`~transformers.PretrainedConfig`]のサブクラスである場合、その`model_type`属性がコンフィグを登録するときに使用するキー（ここでは`"new-model"`）と同じに設定されていることを確認してください。
同様に、あなたの`NewModel`が[`PreTrainedModel`]のサブクラスである場合、その`config_class`属性がモデルを登録する際に使用するクラス（ここでは`NewModelConfig`）と同じに設定されていることを確認してください。
</Tip>
## AutoConfig
[[autodoc]] AutoConfig
## AutoTokenizer
[[autodoc]] AutoTokenizer
## AutoFeatureExtractor
[[autodoc]] AutoFeatureExtractor
## AutoImageProcessor
[[autodoc]] AutoImageProcessor
## AutoProcessor
[[autodoc]] AutoProcessor
## Generic model classes
以下の自動クラスは、特定のヘッドを持たないベースモデルクラスをインスタンス化するために利用可能です。
### AutoModel
[[autodoc]] AutoModel
### TFAutoModel
[[autodoc]] TFAutoModel
### FlaxAutoModel
[[autodoc]] FlaxAutoModel
## Generic pretraining classes
以下の自動クラスは、事前学習ヘッドを持つモデルをインスタンス化するために利用可能です。
### AutoModelForPreTraining
[[autodoc]] AutoModelForPreTraining
### TFAutoModelForPreTraining
[[autodoc]] TFAutoModelForPreTraining
### FlaxAutoModelForPreTraining
[[autodoc]] FlaxAutoModelForPreTraining
## Natural Language Processing
以下の自動クラスは、次の自然言語処理タスクに利用可能です。
### AutoModelForCausalLM
[[autodoc]] AutoModelForCausalLM
### TFAutoModelForCausalLM
[[autodoc]] TFAutoModelForCausalLM
### FlaxAutoModelForCausalLM
[[autodoc]] FlaxAutoModelForCausalLM
### AutoModelForMaskedLM
[[autodoc]] AutoModelForMaskedLM
### TFAutoModelForMaskedLM
[[autodoc]] TFAutoModelForMaskedLM
### FlaxAutoModelForMaskedLM
[[autodoc]] FlaxAutoModelForMaskedLM
### AutoModelForMaskGeneration
[[autodoc]] AutoModelForMaskGeneration
### TFAutoModelForMaskGeneration
[[autodoc]] TFAutoModelForMaskGeneration
### AutoModelForSeq2SeqLM
[[autodoc]] AutoModelForSeq2SeqLM
### TFAutoModelForSeq2SeqLM
[[autodoc]] TFAutoModelForSeq2SeqLM
### FlaxAutoModelForSeq2SeqLM
[[autodoc]] FlaxAutoModelForSeq2SeqLM
### AutoModelForSequenceClassification
[[autodoc]] AutoModelForSequenceClassification
### TFAutoModelForSequenceClassification
[[autodoc]] TFAutoModelForSequenceClassification
### FlaxAutoModelForSequenceClassification
[[autodoc]] FlaxAutoModelForSequenceClassification
### AutoModelForMultipleChoice
[[autodoc]] AutoModelForMultipleChoice
### TFAutoModelForMultipleChoice
[[autodoc]] TFAutoModelForMultipleChoice
### FlaxAutoModelForMultipleChoice
[[autodoc]] FlaxAutoModelForMultipleChoice
### AutoModelForNextSentencePrediction
[[autodoc]] AutoModelForNextSentencePrediction
### TFAutoModelForNextSentencePrediction
[[autodoc]] TFAutoModelForNextSentencePrediction
### FlaxAutoModelForNextSentencePrediction
[[autodoc]] FlaxAutoModelForNextSentencePrediction
### AutoModelForTokenClassification
[[autodoc]] AutoModelForTokenClassification
### TFAutoModelForTokenClassification
[[autodoc]] TFAutoModelForTokenClassification
### FlaxAutoModelForTokenClassification
[[autodoc]] FlaxAutoModelForTokenClassification
### AutoModelForQuestionAnswering
[[autodoc]] AutoModelForQuestionAnswering
### TFAutoModelForQuestionAnswering
[[autodoc]] TFAutoModelForQuestionAnswering
### FlaxAutoModelForQuestionAnswering
[[autodoc]] FlaxAutoModelForQuestionAnswering
### AutoModelForTextEncoding
[[autodoc]] AutoModelForTextEncoding
### TFAutoModelForTextEncoding
[[autodoc]] TFAutoModelForTextEncoding
## Computer vision
以下の自動クラスは、次のコンピュータービジョンタスクに利用可能です。
### AutoModelForDepthEstimation
[[autodoc]] AutoModelForDepthEstimation
### AutoModelForImageClassification
[[autodoc]] AutoModelForImageClassification
### TFAutoModelForImageClassification
[[autodoc]] TFAutoModelForImageClassification
### FlaxAutoModelForImageClassification
[[autodoc]] FlaxAutoModelForImageClassification
### AutoModelForVideoClassification
[[autodoc]] AutoModelForVideoClassification
### AutoModelForMaskedImageModeling
[[autodoc]] AutoModelForMaskedImageModeling
### TFAutoModelForMaskedImageModeling
[[autodoc]] TFAutoModelForMaskedImageModeling
### AutoModelForObjectDetection
[[autodoc]] AutoModelForObjectDetection
### AutoModelForImageSegmentation
[[autodoc]] AutoModelForImageSegmentation
### AutoModelForImageToImage
[[autodoc]] AutoModelForImageToImage
### AutoModelForSemanticSegmentation
[[autodoc]] AutoModelForSemanticSegmentation
### TFAutoModelForSemanticSegmentation
[[autodoc]] TFAutoModelForSemanticSegmentation
### AutoModelForInstanceSegmentation
[[autodoc]] AutoModelForInstanceSegmentation
### AutoModelForUniversalSegmentation
[[autodoc]] AutoModelForUniversalSegmentation
### AutoModelForZeroShotImageClassification
[[autodoc]] AutoModelForZeroShotImageClassification
### TFAutoModelForZeroShotImageClassification
[[autodoc]] TFAutoModelForZeroShotImageClassification
### AutoModelForZeroShotObjectDetection
[[autodoc]] AutoModelForZeroShotObjectDetection
## Audio
以下の自動クラスは、次の音声タスクに利用可能です。
### AutoModelForAudioClassification
[[autodoc]] AutoModelForAudioClassification
### AutoModelForAudioFrameClassification
[[autodoc]] TFAutoModelForAudioClassification
### TFAutoModelForAudioFrameClassification
[[autodoc]] AutoModelForAudioFrameClassification
### AutoModelForCTC
[[autodoc]] AutoModelForCTC
### AutoModelForSpeechSeq2Seq
[[autodoc]] AutoModelForSpeechSeq2Seq
### TFAutoModelForSpeechSeq2Seq
[[autodoc]] TFAutoModelForSpeechSeq2Seq
### FlaxAutoModelForSpeechSeq2Seq
[[autodoc]] FlaxAutoModelForSpeechSeq2Seq
### AutoModelForAudioXVector
[[autodoc]] AutoModelForAudioXVector
### AutoModelForTextToSpectrogram
[[autodoc]] AutoModelForTextToSpectrogram
### AutoModelForTextToWaveform
[[autodoc]] AutoModelForTextToWaveform
## Multimodal
以下の自動クラスは、次のマルチモーダルタスクに利用可能です。
### AutoModelForTableQuestionAnswering
[[autodoc]] AutoModelForTableQuestionAnswering
### TFAutoModelForTableQuestionAnswering
[[autodoc]] TFAutoModelForTableQuestionAnswering
### AutoModelForDocumentQuestionAnswering
[[autodoc]] AutoModelForDocumentQuestionAnswering
### TFAutoModelForDocumentQuestionAnswering
[[autodoc]] TFAutoModelForDocumentQuestionAnswering
### AutoModelForVisualQuestionAnswering
[[autodoc]] AutoModelForVisualQuestionAnswering
### AutoModelForVision2Seq
[[autodoc]] AutoModelForVision2Seq
### TFAutoModelForVision2Seq
[[autodoc]] TFAutoModelForVision2Seq
### FlaxAutoModelForVision2Seq
[[autodoc]] FlaxAutoModelForVision2Seq
| transformers/docs/source/ja/model_doc/auto.md/0 | {
"file_path": "transformers/docs/source/ja/model_doc/auto.md",
"repo_id": "transformers",
"token_count": 3272
} | 263 |
<!--Copyright 2020 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Blenderbot
**免責事項:** 何か奇妙なものを見つけた場合は、 [Github Issue](https://github.com/huggingface/transformers/issues/new?assignees=&labels=&template=bug-report.md&title) を報告してください。
## Overview
Blender チャットボット モデルは、[Recipes for building an open-domain chatbot](https://arxiv.org/pdf/2004.13637.pdf) Stephen Roller、Emily Dinan、Naman Goyal、Da Ju、Mary Williamson、yinghan Liu、で提案されました。
ジン・シュー、マイル・オット、カート・シャスター、エリック・M・スミス、Y-ラン・ブーロー、ジェイソン・ウェストン、2020年4月30日。
論文の要旨は次のとおりです。
*オープンドメインのチャットボットの構築は、機械学習研究にとって難しい分野です。これまでの研究では次のことが示されていますが、
ニューラル モデルをパラメーターの数とトレーニング対象のデータのサイズでスケーリングすると、結果が向上します。
高性能のチャットボットには他の要素も重要であることを示します。良い会話には多くのことが必要です
会話の専門家がシームレスに融合するスキル: 魅力的な話のポイントを提供し、話を聞く
一貫した態度を維持しながら、知識、共感、個性を適切に表現する
ペルソナ。適切なトレーニング データと選択が与えられた場合、大規模モデルがこれらのスキルを学習できることを示します。
世代戦略。 90M、2.7B、9.4B パラメーター モデルを使用してこれらのレシピのバリアントを構築し、モデルを作成します。
コードは公開されています。人間による評価では、当社の最良のモデルが既存のアプローチよりも優れていることがマルチターンで示されています
魅力と人間性の測定という観点からの対話。次に、分析によってこの作業の限界について説明します。
弊社機種の故障事例*
チップ：
- Blenderbot は絶対位置埋め込みを備えたモデルであるため、通常は入力を右側にパディングすることをお勧めします。
左。
このモデルは [sshleifer](https://huggingface.co/sshleifer) によって提供されました。著者のコードは [ここ](https://github.com/facebookresearch/ParlAI) にあります。
## Implementation Notes
- Blenderbot は、標準の [seq2seq モデル トランスフォーマー](https://arxiv.org/pdf/1706.03762.pdf) ベースのアーキテクチャを使用します。
- 利用可能なチェックポイントは、[モデル ハブ](https://huggingface.co/models?search=blenderbot) で見つけることができます。
- これは *デフォルト* Blenderbot モデル クラスです。ただし、次のような小さなチェックポイントもいくつかあります。
`facebook/blenderbot_small_90M` はアーキテクチャが異なるため、一緒に使用する必要があります。
[BlenderbotSmall](ブレンダーボット小)。
## Usage
モデルの使用例を次に示します。
```python
>>> from transformers import BlenderbotTokenizer, BlenderbotForConditionalGeneration
>>> mname = "facebook/blenderbot-400M-distill"
>>> model = BlenderbotForConditionalGeneration.from_pretrained(mname)
>>> tokenizer = BlenderbotTokenizer.from_pretrained(mname)
>>> UTTERANCE = "My friends are cool but they eat too many carbs."
>>> inputs = tokenizer([UTTERANCE], return_tensors="pt")
>>> reply_ids = model.generate(**inputs)
>>> print(tokenizer.batch_decode(reply_ids))
["<s> That's unfortunate. Are they trying to lose weight or are they just trying to be healthier?</s>"]
```
## Documentation resources
- [因果言語モデリング タスク ガイド](../tasks/language_modeling)
- [翻訳タスクガイド](../tasks/translation)
- [要約タスクガイド](../tasks/summarization)
## BlenderbotConfig
[[autodoc]] BlenderbotConfig
## BlenderbotTokenizer
[[autodoc]] BlenderbotTokenizer
- build_inputs_with_special_tokens
## BlenderbotTokenizerFast
[[autodoc]] BlenderbotTokenizerFast
- build_inputs_with_special_tokens
## BlenderbotModel
*forward* および *generate* の引数については、`transformers.BartModel`を参照してください。
[[autodoc]] BlenderbotModel
- forward
## BlenderbotForConditionalGeneration
*forward* と *generate* の引数については、[`~transformers.BartForConditionalGeneration`] を参照してください。
[[autodoc]] BlenderbotForConditionalGeneration
- forward
## BlenderbotForCausalLM
[[autodoc]] BlenderbotForCausalLM
- forward
## TFBlenderbotModel
[[autodoc]] TFBlenderbotModel
- call
## TFBlenderbotForConditionalGeneration
[[autodoc]] TFBlenderbotForConditionalGeneration
- call
## FlaxBlenderbotModel
[[autodoc]] FlaxBlenderbotModel
- __call__
- encode
- decode
## FlaxBlenderbotForConditionalGeneration
[[autodoc]] FlaxBlenderbotForConditionalGeneration
- __call__
- encode
- decode
| transformers/docs/source/ja/model_doc/blenderbot.md/0 | {
"file_path": "transformers/docs/source/ja/model_doc/blenderbot.md",
"repo_id": "transformers",
"token_count": 2298
} | 264 |
<!--Copyright 2022 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# CodeGen
## Overview
CodeGen モデルは、[A Conversational Paradigm for Program Synthesis](https://arxiv.org/abs/2203.13474) で Erik Nijkamp、Bo Pang、林宏明、Lifu Tu、Huan Wang、Yingbo Zhou、Silvio Savarese、Caiming Xiong およびカイミン・ションさん。
CodeGen は、[The Pile](https://pile.eleuther.ai/)、BigQuery、BigPython で順次トレーニングされたプログラム合成用の自己回帰言語モデルです。
論文の要約は次のとおりです。
*プログラム合成は、与えられた問題仕様の解決策としてコンピューター プログラムを生成することを目的としています。我々は、大規模な言語モデルを介した会話型プログラム合成アプローチを提案します。これは、従来のアプローチで直面した広大なプログラム空間とユーザーの意図の仕様を検索するという課題に対処します。私たちの新しいアプローチでは、仕様とプログラムを作成するプロセスを、ユーザーとシステムの間の複数回の対話として捉えます。これはプログラム合成をシーケンス予測問題として扱い、仕様が自然言語で表現され、目的のプログラムが条件付きでサンプリングされます。私たちは、自然言語とプログラミング言語のデータに基づいて、CodeGen と呼ばれる大規模な言語モデルのファミリーをトレーニングします。データの監視が弱く、データ サイズとモデル サイズが拡大すると、単純な自己回帰言語モデリングから会話能力が生まれます。会話型プログラム合成におけるモデルの動作を研究するために、マルチターン プログラミング ベンチマーク (MTPB) を開発します。このベンチマークでは、各問題を解決するには、ユーザーとモデル間のマルチターン会話を介したマルチステップ合成が必要です。私たちの調査結果は、会話機能の出現と、提案されている会話プログラム合成パラダイムの有効性を示しています。さらに、私たちのモデル CodeGen (TPU-v4 でトレーニングされた最大 16B パラメーターを含む) は、HumanEval ベンチマークで OpenAI の Codex を上回ります。私たちはチェックポイントを含むトレーニング ライブラリ JaxFormer をオープン ソースのコントリビューションとして利用できるようにしています: [この https URL](https://github.com/salesforce/codegen)*。
このモデルは [林 宏明](https://huggingface.co/rooa) によって寄稿されました。
元のコードは [ここ](https://github.com/salesforce/codegen) にあります。
## Checkpoint Naming
* CodeGen モデル [チェックポイント](https://huggingface.co/models?other=codegen) は、可変サイズのさまざまな事前トレーニング データで利用できます。
* 形式は「Salesforce/codegen-{size}-{data}」です。ここで、
* `size`: `350M`、`2B`、`6B`、`16B`
* `data`:
* `nl`: パイルで事前トレーニング済み
* `multi`: `nl` で初期化され、複数のプログラミング言語データでさらに事前トレーニングされます。
* `mono`: `multi` で初期化され、Python データでさらに事前トレーニングされます。
* たとえば、`Salesforce/codegen-350M-mono` は、Pile、複数のプログラミング言語、および Python で順次事前トレーニングされた 3 億 5,000 万のパラメーターのチェックポイントを提供します。
## Usage example
```python
>>> from transformers import AutoModelForCausalLM, AutoTokenizer
>>> checkpoint = "Salesforce/codegen-350M-mono"
>>> model = AutoModelForCausalLM.from_pretrained(checkpoint)
>>> tokenizer = AutoTokenizer.from_pretrained(checkpoint)
>>> text = "def hello_world():"
>>> completion = model.generate(**tokenizer(text, return_tensors="pt"))
>>> print(tokenizer.decode(completion[0]))
def hello_world():
print("Hello World")
hello_world()
```
## Resources
- [因果言語モデリング タスク ガイド](../tasks/language_modeling)
## CodeGenConfig
[[autodoc]] CodeGenConfig
- all
## CodeGenTokenizer
[[autodoc]] CodeGenTokenizer
- save_vocabulary
## CodeGenTokenizerFast
[[autodoc]] CodeGenTokenizerFast
## CodeGenModel
[[autodoc]] CodeGenModel
- forward
## CodeGenForCausalLM
[[autodoc]] CodeGenForCausalLM
- forward
| transformers/docs/source/ja/model_doc/codegen.md/0 | {
"file_path": "transformers/docs/source/ja/model_doc/codegen.md",
"repo_id": "transformers",
"token_count": 2153
} | 265 |
<!--Copyright 2022 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# DETA
## Overview
DETA モデルは、[NMS Strikes Back](https://arxiv.org/abs/2212.06137) で Jeffrey Ouyang-Zhang、Jang Hyun Cho、Xingyi Zhou、Philipp Krähenbühl によって提案されました。
DETA (Detection Transformers with Assignment の略) は、1 対 1 の 2 部ハンガリアン マッチング損失を置き換えることにより、[Deformable DETR](deformable_detr) を改善します。
非最大抑制 (NMS) を備えた従来の検出器で使用される 1 対多のラベル割り当てを使用します。これにより、最大 2.5 mAP の大幅な増加が得られます。
論文の要約は次のとおりです。
*Detection Transformer (DETR) は、トレーニング中に 1 対 1 の 2 部マッチングを使用してクエリを一意のオブジェクトに直接変換し、エンドツーエンドのオブジェクト検出を可能にします。最近、これらのモデルは、紛れもない優雅さで COCO の従来の検出器を上回りました。ただし、モデル アーキテクチャやトレーニング スケジュールなど、さまざまな設計において従来の検出器とは異なるため、1 対 1 マッチングの有効性は完全には理解されていません。この研究では、DETR での 1 対 1 のハンガリー語マッチングと、非最大監視 (NMS) を備えた従来の検出器での 1 対多のラベル割り当てとの間の厳密な比較を行います。驚くべきことに、NMS を使用した 1 対多の割り当ては、同じ設定の下で標準的な 1 対 1 のマッチングよりも一貫して優れており、最大 2.5 mAP という大幅な向上が見られます。従来の IoU ベースのラベル割り当てを使用して Deformable-DETR をトレーニングする当社の検出器は、ResNet50 バックボーンを使用して 12 エポック (1x スケジュール) 以内に 50.2 COCO mAP を達成し、この設定で既存のすべての従来の検出器またはトランスベースの検出器を上回りました。複数のデータセット、スケジュール、アーキテクチャに関して、私たちは一貫して、パフォーマンスの高い検出トランスフォーマーには二部マッチングが不要であることを示しています。さらに、検出トランスの成功は、表現力豊かなトランス アーキテクチャによるものであると考えています。*
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/transformers/model_doc/deta_architecture.jpg"
alt="drawing" width="600"/>
<small> DETA の概要。 <a href="https://arxiv.org/abs/2212.06137">元の論文</a>から抜粋。 </small>
このモデルは、[nielsr](https://huggingface.co/nielsr) によって提供されました。
元のコードは [ここ](https://github.com/jozhang97/DETA) にあります。
## Resources
DETA の使用を開始するのに役立つ公式 Hugging Face およびコミュニティ (🌎 で示されている) リソースのリスト。
- DETA のデモ ノートブックは [こちら](https://github.com/NielsRogge/Transformers-Tutorials/tree/master/DETA) にあります。
- 参照: [オブジェクト検出タスク ガイド](../tasks/object_detection)
ここに含めるリソースの送信に興味がある場合は、お気軽にプル リクエストを開いてください。審査させていただきます。リソースは、既存のリソースを複製するのではなく、何か新しいものを示すことが理想的です。
## DetaConfig
[[autodoc]] DetaConfig
## DetaImageProcessor
[[autodoc]] DetaImageProcessor
- preprocess
- post_process_object_detection
## DetaModel
[[autodoc]] DetaModel
- forward
## DetaForObjectDetection
[[autodoc]] DetaForObjectDetection
- forward
| transformers/docs/source/ja/model_doc/deta.md/0 | {
"file_path": "transformers/docs/source/ja/model_doc/deta.md",
"repo_id": "transformers",
"token_count": 1894
} | 266 |
<!--Copyright 2022 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Efficient Training on CPU
このガイドは、CPU上で大規模なモデルを効率的にトレーニングする方法に焦点を当てています。
## Mixed precision with IPEX
IPEXはAVX-512以上のCPUに最適化されており、AVX2のみのCPUでも機能的に動作します。そのため、AVX-512以上のIntel CPU世代ではパフォーマンスの向上が期待されますが、AVX2のみのCPU（例：AMD CPUまたは古いIntel CPU）ではIPEXの下でより良いパフォーマンスが得られるかもしれませんが、保証されません。IPEXは、Float32とBFloat16の両方でCPUトレーニングのパフォーマンスを最適化します。以下のセクションでは、BFloat16の使用に重点を置いて説明します。
低精度データ型であるBFloat16は、AVX512命令セットを備えた第3世代Xeon® Scalable Processors（別名Cooper Lake）でネイティブサポートされており、さらに高性能なIntel® Advanced Matrix Extensions（Intel® AMX）命令セットを備えた次世代のIntel® Xeon® Scalable Processorsでもサポートされます。CPUバックエンド用の自動混合精度がPyTorch-1.10以降で有効になっています。同時に、Intel® Extension for PyTorchでのCPU用BFloat16の自動混合精度サポートと、オペレーターのBFloat16最適化のサポートが大幅に向上し、一部がPyTorchのメインブランチにアップストリームされています。ユーザーはIPEX Auto Mixed Precisionを使用することで、より優れたパフォーマンスとユーザーエクスペリエンスを得ることができます。
詳細な情報については、[Auto Mixed Precision](https://intel.github.io/intel-extension-for-pytorch/cpu/latest/tutorials/features/amp.html)を確認してください。
### IPEX installation:
IPEXのリリースはPyTorchに従っており、pipを使用してインストールできます：
| PyTorch Version | IPEX version |
| :---------------: | :----------: |
| 1.13 | 1.13.0+cpu |
| 1.12 | 1.12.300+cpu |
| 1.11 | 1.11.200+cpu |
| 1.10 | 1.10.100+cpu |
```bash
pip install intel_extension_for_pytorch==<version_name> -f https://developer.intel.com/ipex-whl-stable-cpu
```
[IPEXのインストール方法](https://intel.github.io/intel-extension-for-pytorch/cpu/latest/tutorials/installation.html)について、さらなるアプローチを確認してください。
### Trainerでの使用方法
TrainerでIPEXの自動混合精度を有効にするには、ユーザーはトレーニングコマンド引数に `use_ipex`、`bf16`、および `no_cuda` を追加する必要があります。
[Transformersの質問応答](https://github.com/huggingface/transformers/tree/main/examples/pytorch/question-answering)のユースケースを例に説明します。
- CPU上でBF16自動混合精度を使用してIPEXでトレーニングを行う場合：
<pre> python run_qa.py \
--model_name_or_path google-bert/bert-base-uncased \
--dataset_name squad \
--do_train \
--do_eval \
--per_device_train_batch_size 12 \
--learning_rate 3e-5 \
--num_train_epochs 2 \
--max_seq_length 384 \
--doc_stride 128 \
--output_dir /tmp/debug_squad/ \
<b>--use_ipex \</b>
<b>--bf16 --no_cuda</b></pre>
### Practice example
Blog: [Accelerating PyTorch Transformers with Intel Sapphire Rapids](https://huggingface.co/blog/intel-sapphire-rapids)
| transformers/docs/source/ja/perf_train_cpu.md/0 | {
"file_path": "transformers/docs/source/ja/perf_train_cpu.md",
"repo_id": "transformers",
"token_count": 1666
} | 267 |
<!--Copyright 2023 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Export to ONNX
🤗 Transformersモデルを本番環境に展開する際には、モデルを特殊なランタイムおよびハードウェアで読み込み、実行できるように、モデルをシリアライズされた形式にエクスポートすることが必要であるか、その恩恵を受けることができることがあります。
🤗 Optimumは、Transformersの拡張機能であり、PyTorchまたはTensorFlowからモデルをONNXやTFLiteなどのシリアライズされた形式にエクスポートすることを可能にする「exporters」モジュールを提供しています。また、🤗 Optimumは、最大の効率でターゲットハードウェアでモデルをトレーニングおよび実行するためのパフォーマンス最適化ツールも提供しています。
このガイドでは、🤗 Transformersモデルを🤗 Optimumを使用してONNXにエクスポートする方法を示しており、モデルをTFLiteにエクスポートする方法については[Export to TFLiteページ](tflite)を参照してください。
## Export to ONNX
[ONNX（Open Neural Network eXchange）](http://onnx.ai)は、PyTorchおよびTensorFlowを含むさまざまなフレームワークで深層学習モデルを表現するための共通の一連の演算子とファイル形式を定義するオープンスタンダードです。モデルがONNX形式にエクスポートされると、これらの演算子はニューラルネットワークを介するデータの流れを表す計算グラフ（一般的には「中間表現」と呼ばれる）を構築するために使用されます。
標準化された演算子とデータ型を備えたグラフを公開することで、ONNXはフレームワーク間の切り替えを容易にします。たとえば、PyTorchでトレーニングされたモデルはONNX形式にエクスポートし、それをTensorFlowでインポートすることができます（逆も同様です）。
ONNX形式にエクスポートされたモデルは、以下のように使用できます：
- [グラフ最適化](https://huggingface.co/docs/optimum/onnxruntime/usage_guides/optimization)や[量子化](https://huggingface.co/docs/optimum/onnxruntime/usage_guides/quantization)などのテクニックを使用して推論のために最適化。
- [`ORTModelForXXX`クラス](https://huggingface.co/docs/optimum/onnxruntime/package_reference/modeling_ort)を介してONNX Runtimeで実行し、🤗 Transformersでおなじみの`AutoModel` APIに従います。
- [最適化された推論パイプライン](https://huggingface.co/docs/optimum/main/en/onnxruntime/usage_guides/pipelines)を介して実行し、🤗 Transformersの[`pipeline`]関数と同じAPIを持っています。
🤗 Optimumは、設定オブジェクトを活用してONNXエクスポートをサポートしており、これらの設定オブジェクトは多くのモデルアーキテクチャ用に事前に作成されており、他のアーキテクチャにも簡単に拡張できるように設計されています。
事前に作成された設定のリストについては、[🤗 Optimumドキュメント](https://huggingface.co/docs/optimum/exporters/onnx/overview)を参照してください。
🤗 TransformersモデルをONNXにエクスポートする方法は2つあります。以下では両方の方法を示します：
- export with 🤗 Optimum via CLI.
- export with 🤗 Optimum with `optimum.onnxruntime`.
### Exporting a 🤗 Transformers model to ONNX with CLI
🤗 TransformersモデルをONNXにエクスポートするには、まず追加の依存関係をインストールしてください：
```bash
pip install optimum[exporters]
```
すべての利用可能な引数を確認するには、[🤗 Optimumドキュメント](https://huggingface.co/docs/optimum/exporters/onnx/usage_guides/export_a_model#exporting-a-model-to-onnx-using-the-cli)を参照してください。または、コマンドラインでヘルプを表示することもできます：
```bash
optimum-cli export onnx --help
```
🤗 Hubからモデルのチェックポイントをエクスポートするには、例えば `distilbert/distilbert-base-uncased-distilled-squad` を使いたい場合、以下のコマンドを実行してください：
```bash
optimum-cli export onnx --model distilbert/distilbert-base-uncased-distilled-squad distilbert_base_uncased_squad_onnx/
```
進行状況を示し、結果の `model.onnx` が保存される場所を表示するログは、以下のように表示されるはずです：
```bash
Validating ONNX model distilbert_base_uncased_squad_onnx/model.onnx...
-[✓] ONNX model output names match reference model (start_logits, end_logits)
- Validating ONNX Model output "start_logits":
-[✓] (2, 16) matches (2, 16)
-[✓] all values close (atol: 0.0001)
- Validating ONNX Model output "end_logits":
-[✓] (2, 16) matches (2, 16)
-[✓] all values close (atol: 0.0001)
The ONNX export succeeded and the exported model was saved at: distilbert_base_uncased_squad_onnx
```
上記の例は🤗 Hubからのチェックポイントのエクスポートを示しています。ローカルモデルをエクスポートする場合、まずモデルの重みとトークナイザのファイルを同じディレクトリ（`local_path`）に保存してください。CLIを使用する場合、🤗 Hubのチェックポイント名の代わりに`model`引数に`local_path`を渡し、`--task`引数を指定してください。[🤗 Optimumドキュメント](https://huggingface.co/docs/optimum/exporters/task_manager)でサポートされているタスクのリストを確認できます。`task`引数が指定されていない場合、タスク固有のヘッドを持たないモデルアーキテクチャがデフォルトで選択されます。
```bash
optimum-cli export onnx --model local_path --task question-answering distilbert_base_uncased_squad_onnx/
```
エクスポートされた `model.onnx` ファイルは、ONNX標準をサポートする[多くのアクセラレータ](https://onnx.ai/supported-tools.html#deployModel)の1つで実行できます。たとえば、[ONNX Runtime](https://onnxruntime.ai/)を使用してモデルを読み込み、実行する方法は以下の通りです：
```python
>>> from transformers import AutoTokenizer
>>> from optimum.onnxruntime import ORTModelForQuestionAnswering
>>> tokenizer = AutoTokenizer.from_pretrained("distilbert_base_uncased_squad_onnx")
>>> model = ORTModelForQuestionAnswering.from_pretrained("distilbert_base_uncased_squad_onnx")
>>> inputs = tokenizer("What am I using?", "Using DistilBERT with ONNX Runtime!", return_tensors="pt")
>>> outputs = model(**inputs)
```
🤗 HubからTensorFlowのチェックポイントをエクスポートするプロセスは、同様です。例えば、[Keras organization](https://huggingface.co/keras-io)から純粋なTensorFlowのチェックポイントをエクスポートする方法は以下の通りです：
```bash
optimum-cli export onnx --model keras-io/transformers-qa distilbert_base_cased_squad_onnx/
```
### Exporting a 🤗 Transformers model to ONNX with `optimum.onnxruntime`
CLIの代わりに、🤗 TransformersモデルをONNXにプログラム的にエクスポートすることもできます。以下のように行います：
```python
>>> from optimum.onnxruntime import ORTModelForSequenceClassification
>>> from transformers import AutoTokenizer
>>> model_checkpoint = "distilbert_base_uncased_squad"
>>> save_directory = "onnx/"
>>> # Load a model from transformers and export it to ONNX
>>> ort_model = ORTModelForSequenceClassification.from_pretrained(model_checkpoint, export=True)
>>> tokenizer = AutoTokenizer.from_pretrained(model_checkpoint)
>>> # Save the onnx model and tokenizer
>>> ort_model.save_pretrained(save_directory)
>>> tokenizer.save_pretrained(save_directory)
```
### Exporting a model for an unsupported architecture
現在エクスポートできないモデルをサポートするために貢献したい場合、まず[`optimum.exporters.onnx`](https://huggingface.co/docs/optimum/exporters/onnx/overview)でサポートされているかどうかを確認し、サポートされていない場合は[🤗 Optimumに貢献](https://huggingface.co/docs/optimum/exporters/onnx/usage_guides/contribute)してください。
### Exporting a model with `transformers.onnx`
<Tip warning={true}>
`transformers.onnx`はもはやメンテナンスされていないため、モデルを上記で説明したように🤗 Optimumでエクスポートしてください。このセクションは将来のバージョンで削除されます。
</Tip>
🤗 TransformersモデルをONNXにエクスポートするには、追加の依存関係をインストールしてください：
```bash
pip install transformers[onnx]
```
`transformers.onnx`パッケージをPythonモジュールとして使用して、事前に用意された設定を使用してチェックポイントをエクスポートする方法は以下の通りです：
```bash
python -m transformers.onnx --model=distilbert/distilbert-base-uncased onnx/
```
この方法は、`--model`引数で定義されたチェックポイントのONNXグラフをエクスポートします。🤗 Hubのいずれかのチェックポイントまたはローカルに保存されたチェックポイントを渡すことができます。エクスポートされた`model.onnx`ファイルは、ONNX標準をサポートする多くのアクセラレータで実行できます。例えば、ONNX Runtimeを使用してモデルを読み込んで実行する方法は以下の通りです：
```python
>>> from transformers import AutoTokenizer
>>> from onnxruntime import InferenceSession
>>> tokenizer = AutoTokenizer.from_pretrained("distilbert/distilbert-base-uncased")
>>> session = InferenceSession("onnx/model.onnx")
>>> # ONNX Runtime expects NumPy arrays as input
>>> inputs = tokenizer("Using DistilBERT with ONNX Runtime!", return_tensors="np")
>>> outputs = session.run(output_names=["last_hidden_state"], input_feed=dict(inputs))
```
必要な出力名（例: `["last_hidden_state"]`）は、各モデルのONNX構成を確認することで取得できます。例えば、DistilBERTの場合、次のようになります：
```python
>>> from transformers.models.distilbert import DistilBertConfig, DistilBertOnnxConfig
>>> config = DistilBertConfig()
>>> onnx_config = DistilBertOnnxConfig(config)
>>> print(list(onnx_config.outputs.keys()))
["last_hidden_state"]
```
ハブから純粋なTensorFlowのチェックポイントをプログラム的にエクスポートするプロセスは、以下のように同様です：
```bash
python -m transformers.onnx --model=keras-io/transformers-qa onnx/
```
ローカルに保存されたモデルをエクスポートする場合、モデルの重みとトークナイザのファイルを同じディレクトリに保存してください（例： `local-pt-checkpoint`）。その後、`transformers.onnx`パッケージの `--model`引数を希望するディレクトリに向けて設定して、ONNXにエクスポートします：
```bash
python -m transformers.onnx --model=local-pt-checkpoint onnx/
```
| transformers/docs/source/ja/serialization.md/0 | {
"file_path": "transformers/docs/source/ja/serialization.md",
"repo_id": "transformers",
"token_count": 4847
} | 268 |
<!--Copyright 2023 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Export to TorchScript
<Tip>
これはTorchScriptを使用した実験の最初であり、可変入力サイズのモデルに対するその能力をまだ探求中です。これは私たちの関心の焦点であり、今後のリリースでは、より柔軟な実装や、PythonベースのコードとコンパイルされたTorchScriptを比較するベンチマークを含む、より多くのコード例で詳細な分析を行います。
</Tip>
[TorchScriptのドキュメント](https://pytorch.org/docs/stable/jit.html)によれば：
> TorchScriptは、PyTorchコードから直列化および最適化可能なモデルを作成する方法です。
TorchScriptを使用すると、効率志向のC++プログラムなど、他のプログラムでモデルを再利用できるようになります。PyTorchベースのPythonプログラム以外の環境で🤗 Transformersモデルをエクスポートして使用するためのインターフェースを提供しています。ここでは、TorchScriptを使用してモデルをエクスポートし、使用する方法を説明します。
モデルをエクスポートするには、次の2つの要件があります：
- `torchscript`フラグを使用したモデルのインスタンス化
- ダミーの入力を使用したフォワードパス
これらの必要条件は、以下で詳細に説明されているように、開発者が注意する必要があるいくつかのことを意味します。
## TorchScript flag and tied weights
`torchscript`フラグは、ほとんどの🤗 Transformers言語モデルにおいて、`Embedding`レイヤーと`Decoding`レイヤー間で重みが連結されているため必要です。
TorchScriptでは、重みが連結されているモデルをエクスポートすることはできませんので、事前に重みを切り離して複製する必要があります。
`torchscript`フラグを使用してインスタンス化されたモデルは、`Embedding`レイヤーと`Decoding`レイヤーが分離されており、そのため後でトレーニングしてはいけません。
トレーニングは、これらの2つのレイヤーを非同期にする可能性があり、予期しない結果をもたらす可能性があります。
言語モデルヘッドを持たないモデルには言及しませんが、これらのモデルには連結された重みが存在しないため、`torchscript`フラグなしで安全にエクスポートできます。
## Dummy inputs and standard lengths
ダミー入力はモデルのフォワードパスに使用されます。入力の値はレイヤーを通じて伝播される間、PyTorchは各テンソルに実行された異なる操作を追跡します。これらの記録された操作は、モデルの*トレース*を作成するために使用されます。
トレースは入力の寸法に対して作成されます。そのため、ダミー入力の寸法に制約され、他のシーケンス長やバッチサイズでは動作しません。異なるサイズで試すと、以下のエラーが発生します：
```
`The expanded size of the tensor (3) must match the existing size (7) at non-singleton dimension 2`
```
お勧めしますのは、モデルの推論中に供給される最大の入力と同じ大きさのダミー入力サイズでモデルをトレースすることです。パディングを使用して不足値を補完することもできます。ただし、モデルがより大きな入力サイズでトレースされるため、行列の寸法も大きくなり、より多くの計算が発生します。
異なるシーケンス長のモデルをエクスポートする際に、各入力に対して実行される演算の総数に注意して、パフォーマンスを密接にフォローすることをお勧めします。
## Using TorchScript in Python
このセクションでは、モデルの保存と読み込み、および推論にトレースを使用する方法を示します。
### Saving a model
TorchScriptで`BertModel`をエクスポートするには、`BertConfig`クラスから`BertModel`をインスタンス化し、それをファイル名`traced_bert.pt`でディスクに保存します：
```python
from transformers import BertModel, BertTokenizer, BertConfig
import torch
enc = BertTokenizer.from_pretrained("google-bert/bert-base-uncased")
# Tokenizing input text
text = "[CLS] Who was Jim Henson ? [SEP] Jim Henson was a puppeteer [SEP]"
tokenized_text = enc.tokenize(text)
# Masking one of the input tokens
masked_index = 8
tokenized_text[masked_index] = "[MASK]"
indexed_tokens = enc.convert_tokens_to_ids(tokenized_text)
segments_ids = [0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1]
# Creating a dummy input
tokens_tensor = torch.tensor([indexed_tokens])
segments_tensors = torch.tensor([segments_ids])
dummy_input = [tokens_tensor, segments_tensors]
# Initializing the model with the torchscript flag
# Flag set to True even though it is not necessary as this model does not have an LM Head.
config = BertConfig(
vocab_size_or_config_json_file=32000,
hidden_size=768,
num_hidden_layers=12,
num_attention_heads=12,
intermediate_size=3072,
torchscript=True,
)
# Instantiating the model
model = BertModel(config)
# The model needs to be in evaluation mode
model.eval()
# If you are instantiating the model with *from_pretrained* you can also easily set the TorchScript flag
model = BertModel.from_pretrained("google-bert/bert-base-uncased", torchscript=True)
# Creating the trace
traced_model = torch.jit.trace(model, [tokens_tensor, segments_tensors])
torch.jit.save(traced_model, "traced_bert.pt")
```
### Loading a model
以前に保存した `BertModel`、`traced_bert.pt` をディスクから読み込んで、以前に初期化した `dummy_input` で使用できます。
```python
loaded_model = torch.jit.load("traced_bert.pt")
loaded_model.eval()
all_encoder_layers, pooled_output = loaded_model(*dummy_input)
```
### Using a traced model for inference
トレースモデルを使用して推論を行うには、その `__call__` ダンダーメソッドを使用します。
```python
traced_model(tokens_tensor, segments_tensors)
```
## Deploy Hugging Face TorchScript models to AWS with the Neuron SDK
AWSはクラウドでの低コストで高性能な機械学習推論向けに [Amazon EC2 Inf1](https://aws.amazon.com/ec2/instance-types/inf1/) インスタンスファミリーを導入しました。Inf1インスタンスはAWS Inferentiaチップによって駆動され、ディープラーニング推論ワークロードに特化したカスタムビルドのハードウェアアクセラレータです。[AWS Neuron](https://awsdocs-neuron.readthedocs-hosted.com/en/latest/#) はInferentia用のSDKで、トランスフォーマーモデルをトレースして最適化し、Inf1に展開するためのサポートを提供します。
Neuron SDK が提供するもの:
1. クラウドでの推論のためにTorchScriptモデルをトレースして最適化するための、1行のコード変更で使用できる簡単なAPI。
2. [改善されたコストパフォーマンス](https://awsdocs-neuron.readthedocs-hosted.com/en/latest/neuron-guide/benchmark/) のためのボックス外のパフォーマンス最適化。
3. [PyTorch](https://awsdocs-neuron.readthedocs-hosted.com/en/latest/src/examples/pytorch/bert_tutorial/tutorial_pretrained_bert.html) または [TensorFlow](https://awsdocs-neuron.readthedocs-hosted.com/en/latest/src/examples/tensorflow/huggingface_bert/huggingface_bert.html) で構築されたHugging Faceトランスフォーマーモデルへのサポート。
### Implications
BERT（Bidirectional Encoder Representations from Transformers）アーキテクチャやその変種（[distilBERT](https://huggingface.co/docs/transformers/main/model_doc/distilbert) や [roBERTa](https://huggingface.co/docs/transformers/main/model_doc/roberta) など）に基づくトランスフォーマーモデルは、非生成タスク（抽出型質問応答、シーケンス分類、トークン分類など）において、Inf1上で最適に動作します。ただし、テキスト生成タスクも [AWS Neuron MarianMT チュートリアル](https://awsdocs-neuron.readthedocs-hosted.com/en/latest/src/examples/pytorch/transformers-marianmt.html) に従ってInf1上で実行できます。Inferentiaでボックス外で変換できるモデルに関する詳細情報は、Neuronドキュメンテーションの [Model Architecture Fit](https://awsdocs-neuron.readthedocs-hosted.com/en/latest/neuron-guide/models/models-inferentia.html#models-inferentia) セクションにあります。
### Dependencies
モデルをAWS Neuronに変換するには、[Neuron SDK 環境](https://awsdocs-neuron.readthedocs-hosted.com/en/latest/neuron-guide/neuron-frameworks/pytorch-neuron/index.html#installation-guide) が必要で、[AWS Deep Learning AMI](https://docs.aws.amazon.com/dlami/latest/devguide/tutorial-inferentia-launching.html) に事前に構成されています。
### Converting a model for AWS Neuron
モデルをAWS NEURON用に変換するには、[PythonでTorchScriptを使用する](torchscript#using-torchscript-in-python) と同じコードを使用して `BertModel` をトレースします。Python APIを介してNeuron SDKのコンポーネントにアクセスするために、`torch.neuron` フレームワーク拡張をインポートします。
```python
from transformers import BertModel, BertTokenizer, BertConfig
import torch
import torch.neuron
```
次の行を変更するだけで済みます。
```diff
- torch.jit.trace(model, [tokens_tensor, segments_tensors])
+ torch.neuron.trace(model, [token_tensor, segments_tensors])
```
これにより、Neuron SDKはモデルをトレースし、Inf1インスタンス向けに最適化します。
AWS Neuron SDKの機能、ツール、サンプルチュートリアル、最新のアップデートについて詳しく知りたい場合は、[AWS NeuronSDK ドキュメンテーション](https://awsdocs-neuron.readthedocs-hosted.com/en/latest/index.html) をご覧ください。
| transformers/docs/source/ja/torchscript.md/0 | {
"file_path": "transformers/docs/source/ja/torchscript.md",
"repo_id": "transformers",
"token_count": 4350
} | 269 |
<!--Copyright 2022 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# 맞춤형 아키텍처 만들기[[create-a-custom-architecture]]
[`AutoClass`](model_doc/auto)는 모델 아키텍처를 자동으로 추론하고 미리 학습된 configuration과 가중치를 다운로드합니다. 일반적으로 체크포인트에 구애받지 않는 코드를 생성하려면 `AutoClass`를 사용하는 것이 좋습니다. 하지만 특정 모델 파라미터를 보다 세밀하게 제어하고자 하는 사용자는 몇 가지 기본 클래스만으로 커스텀 🤗 Transformers 모델을 생성할 수 있습니다. 이는 🤗 Transformers 모델을 연구, 교육 또는 실험하는 데 관심이 있는 모든 사용자에게 특히 유용할 수 있습니다. 이 가이드에서는 'AutoClass'를 사용하지 않고 커스텀 모델을 만드는 방법에 대해 알아보겠습니다:
- 모델 configuration을 가져오고 사용자 지정합니다.
- 모델 아키텍처를 생성합니다.
- 텍스트에 사용할 느리거나 빠른 토큰화기를 만듭니다.
- 비전 작업을 위한 이미지 프로세서를 생성합니다.
- 오디오 작업을 위한 특성 추출기를 생성합니다.
- 멀티모달 작업용 프로세서를 생성합니다.
## Configuration[[configuration]]
[configuration](main_classes/configuration)은 모델의 특정 속성을 나타냅니다. 각 모델 구성에는 서로 다른 속성이 있습니다. 예를 들어, 모든 NLP 모델에는 `hidden_size`, `num_attention_heads`, `num_hidden_layers` 및 `vocab_size` 속성이 공통으로 있습니다. 이러한 속성은 모델을 구성할 attention heads 또는 hidden layers의 수를 지정합니다.
[DistilBERT](model_doc/distilbert) 속성을 검사하기 위해 [`DistilBertConfig`]에 접근하여 자세히 살펴봅니다:
```py
>>> from transformers import DistilBertConfig
>>> config = DistilBertConfig()
>>> print(config)
DistilBertConfig {
"activation": "gelu",
"attention_dropout": 0.1,
"dim": 768,
"dropout": 0.1,
"hidden_dim": 3072,
"initializer_range": 0.02,
"max_position_embeddings": 512,
"model_type": "distilbert",
"n_heads": 12,
"n_layers": 6,
"pad_token_id": 0,
"qa_dropout": 0.1,
"seq_classif_dropout": 0.2,
"sinusoidal_pos_embds": false,
"transformers_version": "4.16.2",
"vocab_size": 30522
}
```
[`DistilBertConfig`]는 기본 [`DistilBertModel`]을 빌드하는 데 사용되는 모든 기본 속성을 표시합니다. 모든 속성은 커스터마이징이 가능하므로 실험을 위한 공간을 만들 수 있습니다. 예를 들어 기본 모델을 다음과 같이 커스터마이즈할 수 있습니다:
- `activation` 파라미터로 다른 활성화 함수를 사용해 보세요.
- `attention_dropout` 파라미터를 사용하여 어텐션 확률에 더 높은 드롭아웃 비율을 사용하세요.
```py
>>> my_config = DistilBertConfig(activation="relu", attention_dropout=0.4)
>>> print(my_config)
DistilBertConfig {
"activation": "relu",
"attention_dropout": 0.4,
"dim": 768,
"dropout": 0.1,
"hidden_dim": 3072,
"initializer_range": 0.02,
"max_position_embeddings": 512,
"model_type": "distilbert",
"n_heads": 12,
"n_layers": 6,
"pad_token_id": 0,
"qa_dropout": 0.1,
"seq_classif_dropout": 0.2,
"sinusoidal_pos_embds": false,
"transformers_version": "4.16.2",
"vocab_size": 30522
}
```
사전 학습된 모델 속성은 [`~PretrainedConfig.from_pretrained`] 함수에서 수정할 수 있습니다:
```py
>>> my_config = DistilBertConfig.from_pretrained("distilbert/distilbert-base-uncased", activation="relu", attention_dropout=0.4)
```
모델 구성이 만족스러우면 [`~PretrainedConfig.save_pretrained`]로 저장할 수 있습니다. 설정 파일은 지정된 작업 경로에 JSON 파일로 저장됩니다:
```py
>>> my_config.save_pretrained(save_directory="./your_model_save_path")
```
configuration 파일을 재사용하려면 [`~PretrainedConfig.from_pretrained`]를 사용하여 가져오세요:
```py
>>> my_config = DistilBertConfig.from_pretrained("./your_model_save_path/config.json")
```
<Tip>
configuration 파일을 딕셔너리로 저장하거나 사용자 정의 configuration 속성과 기본 configuration 속성의 차이점만 저장할 수도 있습니다! 자세한 내용은 [configuration](main_classes/configuration) 문서를 참조하세요.
</Tip>
## 모델[[model]]
다음 단계는 [모델(model)](main_classes/models)을 만드는 것입니다. 느슨하게 아키텍처라고도 불리는 모델은 각 계층이 수행하는 동작과 발생하는 작업을 정의합니다. configuration의 `num_hidden_layers`와 같은 속성은 아키텍처를 정의하는 데 사용됩니다. 모든 모델은 기본 클래스 [`PreTrainedModel`]과 입력 임베딩 크기 조정 및 셀프 어텐션 헤드 가지 치기와 같은 몇 가지 일반적인 메소드를 공유합니다. 또한 모든 모델은 [`torch.nn.Module`](https://pytorch.org/docs/stable/generated/torch.nn.Module.html), [`tf.keras.Model`](https://www.tensorflow.org/api_docs/python/tf/keras/Model) 또는 [`flax.linen.Module`](https://flax.readthedocs.io/en/latest/api_reference/flax.linen/module.html)의 서브클래스이기도 합니다. 즉, 모델은 각 프레임워크의 사용법과 호환됩니다.
<frameworkcontent>
<pt>
사용자 지정 configuration 속성을 모델에 가져옵니다:
```py
>>> from transformers import DistilBertModel
>>> my_config = DistilBertConfig.from_pretrained("./your_model_save_path/config.json")
>>> model = DistilBertModel(my_config)
```
이제 사전 학습된 가중치 대신 임의의 값을 가진 모델이 생성됩니다. 이 모델을 훈련하기 전까지는 유용하게 사용할 수 없습니다. 훈련은 비용과 시간이 많이 소요되는 프로세스입니다. 일반적으로 훈련에 필요한 리소스의 일부만 사용하면서 더 나은 결과를 더 빨리 얻으려면 사전 훈련된 모델을 사용하는 것이 좋습니다.
사전 학습된 모델을 [`~PreTrainedModel.from_pretrained`]로 생성합니다:
```py
>>> model = DistilBertModel.from_pretrained("distilbert/distilbert-base-uncased")
```
🤗 Transformers에서 제공한 모델의 사전 학습된 가중치를 사용하는 경우 기본 모델 configuration을 자동으로 불러옵니다. 그러나 원하는 경우 기본 모델 configuration 속성의 일부 또는 전부를 사용자 지정으로 바꿀 수 있습니다:
```py
>>> model = DistilBertModel.from_pretrained("distilbert/distilbert-base-uncased", config=my_config)
```
</pt>
<tf>
사용자 지정 configuration 속성을 모델에 불러옵니다:
```py
>>> from transformers import TFDistilBertModel
>>> my_config = DistilBertConfig.from_pretrained("./your_model_save_path/my_config.json")
>>> tf_model = TFDistilBertModel(my_config)
```
이제 사전 학습된 가중치 대신 임의의 값을 가진 모델이 생성됩니다. 이 모델을 훈련하기 전까지는 유용하게 사용할 수 없습니다. 훈련은 비용과 시간이 많이 소요되는 프로세스입니다. 일반적으로 훈련에 필요한 리소스의 일부만 사용하면서 더 나은 결과를 더 빨리 얻으려면 사전 훈련된 모델을 사용하는 것이 좋습니다.
사전 학습된 모델을 [`~TFPreTrainedModel.from_pretrained`]로 생성합니다:
```py
>>> tf_model = TFDistilBertModel.from_pretrained("distilbert/distilbert-base-uncased")
```
🤗 Transformers에서 제공한 모델의 사전 학습된 가중치를 사용하는 경우 기본 모델 configuration을 자동으로 불러옵니다. 그러나 원하는 경우 기본 모델 configuration 속성의 일부 또는 전부를 사용자 지정으로 바꿀 수 있습니다:
```py
>>> tf_model = TFDistilBertModel.from_pretrained("distilbert/distilbert-base-uncased", config=my_config)
```
</tf>
</frameworkcontent>
### 모델 헤드[[model-heads]]
이 시점에서 *은닉 상태(hidden state)*를 출력하는 기본 DistilBERT 모델을 갖게 됩니다. 은닉 상태는 최종 출력을 생성하기 위해 모델 헤드에 입력으로 전달됩니다. 🤗 Transformers는 모델이 해당 작업을 지원하는 한 각 작업마다 다른 모델 헤드를 제공합니다(즉, 번역과 같은 시퀀스 간 작업에는 DistilBERT를 사용할 수 없음).
<frameworkcontent>
<pt>
예를 들어, [`DistilBertForSequenceClassification`]은 시퀀스 분류 헤드가 있는 기본 DistilBERT 모델입니다. 시퀀스 분류 헤드는 풀링된 출력 위에 있는 선형 레이어입니다.
```py
>>> from transformers import DistilBertForSequenceClassification
>>> model = DistilBertForSequenceClassification.from_pretrained("distilbert/distilbert-base-uncased")
```
다른 모델 헤드로 전환하여 이 체크포인트를 다른 작업에 쉽게 재사용할 수 있습니다. 질의응답 작업의 경우, [`DistilBertForQuestionAnswering`] 모델 헤드를 사용할 수 있습니다. 질의응답 헤드는 숨겨진 상태 출력 위에 선형 레이어가 있다는 점을 제외하면 시퀀스 분류 헤드와 유사합니다.
```py
>>> from transformers import DistilBertForQuestionAnswering
>>> model = DistilBertForQuestionAnswering.from_pretrained("distilbert/distilbert-base-uncased")
```
</pt>
<tf>
예를 들어, [`TFDistilBertForSequenceClassification`]은 시퀀스 분류 헤드가 있는 기본 DistilBERT 모델입니다. 시퀀스 분류 헤드는 풀링된 출력 위에 있는 선형 레이어입니다.
```py
>>> from transformers import TFDistilBertForSequenceClassification
>>> tf_model = TFDistilBertForSequenceClassification.from_pretrained("distilbert/distilbert-base-uncased")
```
다른 모델 헤드로 전환하여 이 체크포인트를 다른 작업에 쉽게 재사용할 수 있습니다. 질의응답 작업의 경우, [`TFDistilBertForQuestionAnswering`] 모델 헤드를 사용할 수 있습니다. 질의응답 헤드는 숨겨진 상태 출력 위에 선형 레이어가 있다는 점을 제외하면 시퀀스 분류 헤드와 유사합니다.
```py
>>> from transformers import TFDistilBertForQuestionAnswering
>>> tf_model = TFDistilBertForQuestionAnswering.from_pretrained("distilbert/distilbert-base-uncased")
```
</tf>
</frameworkcontent>
## 토크나이저[[tokenizer]]
텍스트 데이터에 모델을 사용하기 전에 마지막으로 필요한 기본 클래스는 원시 텍스트를 텐서로 변환하는 [토크나이저](main_classes/tokenizer)입니다. 🤗 Transformers에 사용할 수 있는 토크나이저는 두 가지 유형이 있습니다:
- [`PreTrainedTokenizer`]: 파이썬으로 구현된 토크나이저입니다.
- [`PreTrainedTokenizerFast`]: Rust 기반 [🤗 Tokenizer](https://huggingface.co/docs/tokenizers/python/latest/) 라이브러리로 만들어진 토크나이저입니다. 이 토크나이저는 Rust로 구현되어 배치 토큰화에서 특히 빠릅니다. 빠른 토크나이저는 토큰을 원래 단어나 문자에 매핑하는 *오프셋 매핑*과 같은 추가 메소드도 제공합니다.
두 토크나이저 모두 인코딩 및 디코딩, 새 토큰 추가, 특수 토큰 관리와 같은 일반적인 방법을 지원합니다.
<Tip warning={true}>
모든 모델이 빠른 토크나이저를 지원하는 것은 아닙니다. 이 [표](index#supported-frameworks)에서 모델의 빠른 토크나이저 지원 여부를 확인하세요.
</Tip>
토크나이저를 직접 학습한 경우, *어휘(vocabulary)* 파일에서 토크나이저를 만들 수 있습니다:
```py
>>> from transformers import DistilBertTokenizer
>>> my_tokenizer = DistilBertTokenizer(vocab_file="my_vocab_file.txt", do_lower_case=False, padding_side="left")
```
사용자 지정 토크나이저의 어휘는 사전 학습된 모델의 토크나이저에서 생성된 어휘와 다를 수 있다는 점을 기억하는 것이 중요합니다. 사전 학습된 모델을 사용하는 경우 사전 학습된 모델의 어휘를 사용해야 하며, 그렇지 않으면 입력이 의미를 갖지 못합니다. [`DistilBertTokenizer`] 클래스를 사용하여 사전 학습된 모델의 어휘로 토크나이저를 생성합니다:
```py
>>> from transformers import DistilBertTokenizer
>>> slow_tokenizer = DistilBertTokenizer.from_pretrained("distilbert/distilbert-base-uncased")
```
[`DistilBertTokenizerFast`] 클래스로 빠른 토크나이저를 생성합니다:
```py
>>> from transformers import DistilBertTokenizerFast
>>> fast_tokenizer = DistilBertTokenizerFast.from_pretrained("distilbert/distilbert-base-uncased")
```
<Tip>
[`AutoTokenizer`]는 기본적으로 빠른 토크나이저를 가져오려고 합니다. 이 동작을 비활성화하려면 `from_pretrained`에서 `use_fast=False`를 설정하면 됩니다.
</Tip>
## 이미지 프로세서[[image-processor]]
이미지 프로세서(image processor)는 비전 입력을 처리합니다. 기본 [`~image_processing_utils.ImageProcessingMixin`] 클래스에서 상속합니다.
사용하려면 사용 중인 모델과 연결된 이미지 프로세서를 생성합니다. 예를 들어, 이미지 분류에 [ViT](model_doc/vit)를 사용하는 경우 기본 [`ViTImageProcessor`]를 생성합니다:
```py
>>> from transformers import ViTImageProcessor
>>> vit_extractor = ViTImageProcessor()
>>> print(vit_extractor)
ViTImageProcessor {
"do_normalize": true,
"do_resize": true,
"feature_extractor_type": "ViTImageProcessor",
"image_mean": [
0.5,
0.5,
0.5
],
"image_std": [
0.5,
0.5,
0.5
],
"resample": 2,
"size": 224
}
```
<Tip>
사용자 지정을 원하지 않는 경우 `from_pretrained` 메소드를 사용하여 모델의 기본 이미지 프로세서 매개변수를 불러오면 됩니다.
</Tip>
사용자 지정 이미지 프로세서를 생성하려면 [`ViTImageProcessor`] 파라미터를 수정합니다:
```py
>>> from transformers import ViTImageProcessor
>>> my_vit_extractor = ViTImageProcessor(resample="PIL.Image.BOX", do_normalize=False, image_mean=[0.3, 0.3, 0.3])
>>> print(my_vit_extractor)
ViTImageProcessor {
"do_normalize": false,
"do_resize": true,
"feature_extractor_type": "ViTImageProcessor",
"image_mean": [
0.3,
0.3,
0.3
],
"image_std": [
0.5,
0.5,
0.5
],
"resample": "PIL.Image.BOX",
"size": 224
}
```
## 특성 추출기[[feature-extractor]]
특성 추출기(feature extractor)는 오디오 입력을 처리합니다. 기본 [`~feature_extraction_utils.FeatureExtractionMixin`] 클래스에서 상속되며, 오디오 입력을 처리하기 위해 [`SequenceFeatureExtractor`] 클래스에서 상속할 수도 있습니다.
사용하려면 사용 중인 모델과 연결된 특성 추출기를 생성합니다. 예를 들어, 오디오 분류에 [Wav2Vec2](model_doc/wav2vec2)를 사용하는 경우 기본 [`Wav2Vec2FeatureExtractor`]를 생성합니다:
```py
>>> from transformers import Wav2Vec2FeatureExtractor
>>> w2v2_extractor = Wav2Vec2FeatureExtractor()
>>> print(w2v2_extractor)
Wav2Vec2FeatureExtractor {
"do_normalize": true,
"feature_extractor_type": "Wav2Vec2FeatureExtractor",
"feature_size": 1,
"padding_side": "right",
"padding_value": 0.0,
"return_attention_mask": false,
"sampling_rate": 16000
}
```
<Tip>
사용자 지정이 필요하지 않은 경우 `from_pretrained` 메소드를 사용하여 모델의 기본 특성 추출기 ㅁ개변수를 불러 오면 됩니다.
</Tip>
사용자 지정 특성 추출기를 만들려면 [`Wav2Vec2FeatureExtractor`] 매개변수를 수정합니다:
```py
>>> from transformers import Wav2Vec2FeatureExtractor
>>> w2v2_extractor = Wav2Vec2FeatureExtractor(sampling_rate=8000, do_normalize=False)
>>> print(w2v2_extractor)
Wav2Vec2FeatureExtractor {
"do_normalize": false,
"feature_extractor_type": "Wav2Vec2FeatureExtractor",
"feature_size": 1,
"padding_side": "right",
"padding_value": 0.0,
"return_attention_mask": false,
"sampling_rate": 8000
}
```
## 프로세서[[processor]]
멀티모달 작업을 지원하는 모델의 경우, 🤗 Transformers는 특성 추출기 및 토크나이저와 같은 처리 클래스를 단일 객체로 편리하게 래핑하는 프로세서 클래스를 제공합니다. 예를 들어, 자동 음성 인식 작업(Automatic Speech Recognition task (ASR))에 [`Wav2Vec2Processor`]를 사용한다고 가정해 보겠습니다. 자동 음성 인식 작업은 오디오를 텍스트로 변환하므로 특성 추출기와 토크나이저가 필요합니다.
오디오 입력을 처리할 특성 추출기를 만듭니다:
```py
>>> from transformers import Wav2Vec2FeatureExtractor
>>> feature_extractor = Wav2Vec2FeatureExtractor(padding_value=1.0, do_normalize=True)
```
텍스트 입력을 처리할 토크나이저를 만듭니다:
```py
>>> from transformers import Wav2Vec2CTCTokenizer
>>> tokenizer = Wav2Vec2CTCTokenizer(vocab_file="my_vocab_file.txt")
```
[`Wav2Vec2Processor`]에서 특성 추출기와 토크나이저를 결합합니다:
```py
>>> from transformers import Wav2Vec2Processor
>>> processor = Wav2Vec2Processor(feature_extractor=feature_extractor, tokenizer=tokenizer)
```
configuration과 모델이라는 두 가지 기본 클래스와 추가 전처리 클래스(토크나이저, 이미지 프로세서, 특성 추출기 또는 프로세서)를 사용하면 🤗 Transformers에서 지원하는 모든 모델을 만들 수 있습니다. 이러한 각 기본 클래스는 구성이 가능하므로 원하는 특정 속성을 사용할 수 있습니다. 학습을 위해 모델을 쉽게 설정하거나 기존의 사전 학습된 모델을 수정하여 미세 조정할 수 있습니다.
| transformers/docs/source/ko/create_a_model.md/0 | {
"file_path": "transformers/docs/source/ko/create_a_model.md",
"repo_id": "transformers",
"token_count": 11706
} | 270 |
<!--⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# 웹 서버를 위한 파이프라인 사용하기[[using_pipelines_for_a_webserver]]
<Tip>
추론 엔진을 만드는 것은 복잡한 주제이며, "최선의" 솔루션은 문제 공간에 따라 달라질 가능성이 높습니다. CPU 또는 GPU를 사용하는지에 따라 다르고 낮은 지연 시간을 원하는지, 높은 처리량을 원하는지, 다양한 모델을 지원할 수 있길 원하는지, 하나의 특정 모델을 고도로 최적화하길 원하는지 등에 따라 달라집니다. 이 주제를 해결하는 방법에는 여러 가지가 있으므로, 이 장에서 제시하는 것은 처음 시도해 보기에 좋은 출발점일 수는 있지만, 이 장을 읽는 여러분이 필요로 하는 최적의 솔루션은 아닐 수 있습니다.
</Tip>
핵심적으로 이해해야 할 점은 [dataset](pipeline_tutorial#using-pipelines-on-a-dataset)를 다룰 때와 마찬가지로 반복자를 사용 가능하다는 것입니다. 왜냐하면, 웹 서버는 기본적으로 요청을 기다리고 들어오는 대로 처리하는 시스템이기 때문입니다.
보통 웹 서버는 다양한 요청을 동시에 다루기 위해 매우 다중화된 구조(멀티 스레딩, 비동기 등)를 지니고 있습니다. 반면에, 파이프라인(대부분 파이프라인 안에 있는 모델)은 병렬처리에 그다지 좋지 않습니다. 왜냐하면 파이프라인은 많은 RAM을 차지하기 때문입니다. 따라서, 파이프라인이 실행 중이거나 계산 집약적인 작업 중일 때 모든 사용 가능한 리소스를 제공하는 것이 가장 좋습니다.
이 문제를 우리는 웹 서버가 요청을 받고 보내는 가벼운 부하를 처리하고, 실제 작업을 처리하는 단일 스레드를 갖는 방법으로 해결할 것입니다. 이 예제는 `starlette` 라이브러리를 사용합니다.
실제 프레임워크는 중요하지 않지만, 다른 프레임워크를 사용하는 경우 동일한 효과를 보기 위해선 코드를 조정하거나 변경해야 할 수 있습니다.
`server.py`를 생성하세요:
```py
from starlette.applications import Starlette
from starlette.responses import JSONResponse
from starlette.routing import Route
from transformers import pipeline
import asyncio
async def homepage(request):
payload = await request.body()
string = payload.decode("utf-8")
response_q = asyncio.Queue()
await request.app.model_queue.put((string, response_q))
output = await response_q.get()
return JSONResponse(output)
async def server_loop(q):
pipe = pipeline(model="google-bert/bert-base-uncased")
while True:
(string, response_q) = await q.get()
out = pipe(string)
await response_q.put(out)
app = Starlette(
routes=[
Route("/", homepage, methods=["POST"]),
],
)
@app.on_event("startup")
async def startup_event():
q = asyncio.Queue()
app.model_queue = q
asyncio.create_task(server_loop(q))
```
이제 다음 명령어로 실행시킬 수 있습니다:
```bash
uvicorn server:app
```
이제 쿼리를 날려볼 수 있습니다:
```bash
curl -X POST -d "test [MASK]" http://localhost:8000/
#[{"score":0.7742936015129089,"token":1012,"token_str":".","sequence":"test."},...]
```
자, 이제 웹 서버를 만드는 방법에 대한 좋은 개념을 알게 되었습니다!
중요한 점은 모델을 **한 번만** 가져온다는 것입니다. 따라서 웹 서버에는 모델의 사본이 없습니다. 이런 방식은 불필요한 RAM이 사용되지 않습니다. 그런 다음 큐 메커니즘을 사용하면, 다음과 같은
동적 배치를 사용하기 위해 추론 전 단계에 몇 개의 항목을 축적하는 것과 같은 멋진 작업을 할 수 있습니다:
<Tip warning={true}>
코드는 의도적으로 가독성을 위해 의사 코드처럼 작성되었습니다!
아래 코드를 작동시키기 전에 시스템 자원이 충분한지 확인하세요!
</Tip>
```py
(string, rq) = await q.get()
strings = []
queues = []
while True:
try:
(string, rq) = await asyncio.wait_for(q.get(), timeout=0.001) # 1ms
except asyncio.exceptions.TimeoutError:
break
strings.append(string)
queues.append(rq)
strings
outs = pipe(strings, batch_size=len(strings))
for rq, out in zip(queues, outs):
await rq.put(out)
```
다시 말씀 드리자면, 제안된 코드는 가독성을 위해 최적화되었으며, 최상의 코드는 아닙니다.
첫째, 배치 크기 제한이 없으며 이는 일반적으로 좋은 방식이 아닙니다.
둘째, 모든 큐 가져오기에서 타임아웃이 재설정되므로 추론을 실행하기 전에 1ms보다 훨씬 오래 기다릴 수 있습니다(첫 번째 요청을 그만큼 지연시킴).
단일 1ms 길이의 데드라인을 두는 편이 더 좋습니다.
이 방식을 사용하면 큐가 비어 있어도 항상 1ms를 기다리게 될 것입니다.
큐에 아무것도 없을 때 추론을 원하는 경우에는 최선의 방법이 아닐 수 있습니다.
하지만 배치 작업이 사용례에 따라 정말로 중요하다면 의미가 있을 수도 있습니다.
다시 말하지만, 최상의 솔루션은 없습니다.
## 고려해야 할 몇 가지 사항[[few_things_you_might want_to_consider]]
### 에러 확인[[error_checking]]
프로덕션 환경에서는 문제가 발생할 여지가 많습니다.
메모리가 모자라거나, 공간이 부족하거나, 모델을 가져오는 데에 실패하거나, 쿼리가 잘못되었거나, 쿼리는 정확해도 모델 설정이 잘못되어 실행에 실패하는 등등 많은 경우가 존재합니다.
일반적으로 서버가 사용자에게 오류를 출력하는 것이 좋으므로
오류를 표시하기 위해 `try...except` 문을 많이 추가하는 것이 좋습니다.
하지만 보안 상황에 따라 모든 오류를 표시하는 것은 보안상 위험할 수도 있다는 점을 명심해야합니다.
### 서킷 브레이킹[[circuit_breaking]]
웹 서버는 일반적으로 서킷 브레이킹을 수행할 때 더 나은 상황에 직면합니다.
즉, 이는 서버가 쿼리를 무기한 기다리는 대신 과부하 상태일 때 적절한 오류를 반환하는 것을 의미합니다.
서버가 매우 오랜 시간 동안 대기하거나 적당한 시간이 지난 후에 504 에러를 반환하는 대신 503 에러를 빠르게 반환하게 하는 것입니다.
제안된 코드에는 단일 큐가 있으므로 구현하기가 비교적 쉽습니다.
큐 크기를 확인하는 것은 웹 서버가 과부하 상항 하에 있을 때 에러를 반환하기 위한 가장 기초적인 작업입니다.
### 메인 쓰레드 차단[[blocking_the_main_thread]]
현재 PyTorch는 비동기 처리를 지원하지 않으며, 실행 중에는 메인 스레드가 차단됩니다.
따라서 PyTorch를 별도의 스레드/프로세스에서 실행하도록 강제하는 것이 좋습니다.
여기서는 이 작업이 수행되지 않았습니다. 왜냐하면 코드가 훨씬 더 복잡하기 때문입니다(주로 스레드, 비동기 처리, 큐가 서로 잘 맞지 않기 때문입니다).
하지만 궁극적으로는 같은 작업을 수행하는 것입니다.
단일 항목의 추론이 오래 걸린다면 (> 1초), 메인 쓰레드를 차단하는 것은 중요할 수 있습니다. 왜냐하면 이 경우 추론 중 모든 쿼리는 오류를 받기 전에 1초를 기다려야 하기 때문입니다.
### 동적 배치[[dynamic_batching]]
일반적으로, 배치 처리가 1개 항목을 한 번에 전달하는 것에 비해 반드시 성능 향상이 있는 것은 아닙니다(자세한 내용은 [`batching details`](./main_classes/pipelines#pipeline-batching)을 참고하세요).
하지만 올바른 설정에서 사용하면 매우 효과적일 수 있습니다.
API에는 기본적으로 속도 저하의 가능성이 매우 높기 때문에 동적 배치 처리가 없습니다.
하지만 매우 큰 모델인 BLOOM 추론의 경우 동적 배치 처리는 모든 사람에게 적절한 경험을 제공하는 데 **필수**입니다.
| transformers/docs/source/ko/pipeline_webserver.md/0 | {
"file_path": "transformers/docs/source/ko/pipeline_webserver.md",
"repo_id": "transformers",
"token_count": 6178
} | 271 |
<!--Copyright 2020 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# 토크나이저 요약[[summary-of-the-tokenizers]]
[[open-in-colab]]
이 페이지에서는 토큰화에 대해 자세히 살펴보겠습니다.
<Youtube id="VFp38yj8h3A"/>
[데이터 전처리하기 튜토리얼](preprocessing)에서 살펴본 것처럼, 텍스트를 토큰화하는 것은 텍스트를 단어 또는 서브워드로 분할하고 룩업 테이블을 통해 id로 변환하는 과정입니다.
단어 또는 서브워드를 id로 변환하는 것은 간단하기 때문에 이번 문서에서는 텍스트를 단어 또는 서브워드로 쪼개는 것(즉, 텍스트를 토큰화하는 것)에 중점을 두겠습니다.
구체적으로, 🤗 Transformers에서 사용되는 세 가지 주요 토큰화 유형인 [Byte-Pair Encoding (BPE)](#byte-pair-encoding), [WordPiece](#wordpiece), [SentencePiece](#sentencepiece)를 살펴보고 어떤 모델에서 어떤 토큰화 유형을 사용하는지 예시를 보여드리겠습니다.
각 모델 페이지에 연결된 토크나이저의 문서를 보면 사전 훈련 모델에서 어떤 토크나이저를 사용했는지 알 수 있습니다.
예를 들어, [`BertTokenizer`]를 보면 이 모델이 [WordPiece](#wordpiece)를 사용하는 것을 알 수 있습니다.
## 개요[[introduction]]
텍스트를 작은 묶음(chunk)으로 쪼개는 것은 보기보다 어려운 작업이며, 여러 가지 방법이 있습니다.
예를 들어, `"Don't you love 🤗 Transformers? We sure do."` 라는 문장을 살펴보도록 하겠습니다.
<Youtube id="nhJxYji1aho"/>
위 문장을 토큰화하는 간단한 방법은 공백을 기준으로 쪼개는 것입니다.
토큰화된 결과는 다음과 같습니다:
```
["Don't", "you", "love", "🤗", "Transformers?", "We", "sure", "do."]
```
이는 첫 번째 결과로는 합리적이지만, `"Transformers?"`와 `"do."`토큰을 보면 각각 `"Transformer"`와 `"do"`에 구두점이 붙어있는 것을 확인할 수 있습니다.
구두점을 고려해야 모델이 단어의 다른 표현과 그 뒤에 올 수 있는 모든 가능한 구두점을 학습할 필요가 없습니다. 그렇지 않으면 모델이 학습해야 하는 표현의 수가 폭발적으로 증가하게 됩니다.
구두점을 고려한 토큰화 결과는 다음과 같습니다:
```
["Don", "'", "t", "you", "love", "🤗", "Transformers", "?", "We", "sure", "do", "."]
```
이전보다 나아졌습니다. 하지만, `"Don't"`의 토큰화 결과도 수정이 필요합니다.
`"Don't"`는 `"do not"`의 줄임말이기 때문에 `["Do", "n't"]`로 토큰화되는 것이 좋습니다.
여기서부터 복잡해지기 시작합니다. 그리고 이 점이 각 모델마다 고유한 토큰화 유형이 존재하는 이유 중 하나입니다.
텍스트를 토큰화하는 데 적용하는 규칙에 따라 동일한 텍스트에 대해 토큰화된 결과가 달라집니다.
사전 훈련된 모델은 훈련 데이터를 토큰화하는 데 사용된 것과 동일한 규칙으로 토큰화된 입력을 제공해야만 제대로 작동합니다.
[spaCy](https://spacy.io/)와 [Moses](http://www.statmt.org/moses/?n=Development.GetStarted)는 유명한 규칙 기반 토크나이저입니다. 예제에 *spaCy*와 *Moses* 를 적용한 결과는 다음과 같습니다:
```
["Do", "n't", "you", "love", "🤗", "Transformers", "?", "We", "sure", "do", "."]
```
보시다시피 공백 및 구두점 토큰화와 규칙 기반 토큰화가 사용됩니다.
공백 및 구두점, 규칙 기반 토큰화은 모두 단어 문장을 단어로 쪼개는 단어 토큰화에 해당합니다.
이 토큰화 방법은 텍스트를 더 작은 묶음(chunk)로 분할하는 가장 직관적인 방법이지만, 대규모 텍스트 말뭉치에 대해서는 문제가 발생할 수 있습니다.
이 경우 공백 및 구두점 토큰화는 일반적으로 매우 큰 어휘(사용된 모든 고유 단어와 토큰 집합)을 생성합니다.
*예를 들어*, [Transformer XL](model_doc/transformerxl)은 공백 및 구두점 토큰화를 사용해 어휘(vocabulary) 크기가 267,735입니다!
어휘 크기가 크면 모델에 입력 및 출력 레이어로 엄청난 임베딩 행렬이 필요하므로 메모리와 시간 복잡성이 모두 증가합니다.
일반적으로 트랜스포머 모델은 어휘 크기가 50,000개를 넘는 경우가 드물며, 특히 단일 언어에 대해서만 사전 훈련된 경우에는 더욱 그렇습니다.
단순한 공백과 구두점 토큰화가 만족스럽지 않다면 단순히 문자를 토큰화하면 어떨까요?
<Youtube id="ssLq_EK2jLE"/>
문자 토큰화는 아주 간단하고 메모리와 시간 복잡도를 크게 줄일 수 있지만, 모델이 의미 있는 입력 표현을 학습하기에는 훨씬 더 어렵습니다.
*예를 들어*, 문자 `"t"`에 대한 의미 있는 문맥 독립적 표현을 배우는 것 보다 단어 `"today"`에 대한 의미 있는 문맥 독립적 표현을 배우는 것이 훨씬 더 어렵습니다.
문자 토큰화는 종종 성능 저하를 동반하기 때문에 두 가지 장점을 모두 얻기 위해 트랜스포머 모델은 **서브워드** 토큰화라고 하는 단어 수준과 문자 수준 토큰화의 하이브리드를 사용합니다.
## 서브워드 토큰화[[subword-tokenization]]
<Youtube id="zHvTiHr506c"/>
서브워드 토큰화 알고리즘은 자주 사용되는 단어는 더 작은 하위 단어로 쪼개고, 드문 단어는 의미 있는 하위 단어로 분해되어야 한다는 원칙에 따라 작동합니다.
예를 들어 `"annoyingly"`는 드문 단어로 간주되어 `"annoying"`과 `"ly"`로 분해될 수 있습니다.
`"annoyingly"`가 `"annoying"`과 `"ly"`의 합성어인 반면, `"annoying"`과 `"ly"` 둘 다 독립적인 서브워드로 자주 등장합니다.
이는 터키어와 같은 응집성 언어에서 특히 유용하며, 서브워드를 묶어 임의로 긴 복합 단어를 만들 수 있습니다.
서브워드 토큰화를 사용하면 모델이 의미 있는 문맥 독립적 표현을 학습하면서 합리적인 어휘 크기를 가질 수 있습니다.
또한, 서브워드 토큰화를 통해 모델은 이전에 본 적이 없는 단어를 알려진 서브워드로 분해하여 처리할 수 있습니다.
예를 들어, [`~transformers.BertTokenizer`]는 `"I have a new GPU!"` 라는 문장을 아래와 같이 토큰화합니다:
```py
>>> from transformers import BertTokenizer
>>> tokenizer = BertTokenizer.from_pretrained("google-bert/bert-base-uncased")
>>> tokenizer.tokenize("I have a new GPU!")
["i", "have", "a", "new", "gp", "##u", "!"]
```
대소문자가 없는 모델을 사용해 문장의 시작이 소문자로 표기되었습니다.
단어 `["i", "have", "a", "new"]`는 토크나이저의 어휘에 속하지만, `"gpu"`는 속하지 않는 것을 확인할 수 있습니다.
결과적으로 토크나이저는 `"gpu"`를 알려진 두 개의 서브워드로 쪼갭니다: `["gp" and "##u"]`.
`"##"`은 토큰의 나머지 부분이 공백 없이 이전 토큰에 연결되어야(attach) 함을 의미합니다(토큰화 디코딩 또는 역전을 위해).
또 다른 예로, [`~transformers.XLNetTokenizer`]는 이전에 예시 문장을 다음과 같이 토큰화합니다:
```py
>>> from transformers import XLNetTokenizer
>>> tokenizer = XLNetTokenizer.from_pretrained("xlnet/xlnet-base-cased")
>>> tokenizer.tokenize("Don't you love 🤗 Transformers? We sure do.")
["▁Don", "'", "t", "▁you", "▁love", "▁", "🤗", "▁", "Transform", "ers", "?", "▁We", "▁sure", "▁do", "."]
```
`"▁"`가 가지는 의미는 [SentencePiece](#sentencepiece)에서 다시 살펴보도록 하겠습니다.
보다시피 `"Transformers"` 라는 드문 단어는 서브워드 `"Transform"`와 `"ers"`로 쪼개집니다.
이제 다양한 하위 단어 토큰화 알고리즘이 어떻게 작동하는지 살펴보겠습니다.
이러한 토큰화 알고리즘은 일반적으로 해당 모델이 학습되는 말뭉치에 대해 수행되는 어떤 형태의 학습에 의존한다는 점에 유의하세요.
<a id='byte-pair-encoding'></a>
### 바이트 페어 인코딩 (Byte-Pair Encoding, BPE)[[bytepair-encoding-bpe]]
바이트 페어 인코딩(BPE)은 [Neural Machine Translation of Rare Words with Subword Units (Sennrich et
al., 2015)](https://arxiv.org/abs/1508.07909) 에서 소개되었습니다.
BPE는 훈련 데이터를 단어로 분할하는 사전 토크나이저(pre-tokenizer)에 의존합니다.
사전 토큰화(Pretokenization)에는 [GPT-2](model_doc/gpt2), [Roberta](model_doc/roberta)와 같은 간단한 공백 토큰화가 있습니다.
복잡한 사전 토큰화에는 규칙 기반 토큰화가 해당하는데, 훈련 말뭉치에서 각 단어의 빈도를 계산하기 위해 사용합니다.
[XLM](model_doc/xlm), 대부분의 언어에서 Moses를 사용하는 [FlauBERT](model_doc/flaubert), Spacy와 ftfy를 사용하는 [GPT](model_doc/gpt)가 해당합니다.
사전 토큰화 이후에, 고유 단어 집합가 생성되고 훈련 데이터에서 각 단어가 등장하는 빈도가 결정됩니다.
다음으로, BPE는 고유 단어 집합에 나타나는 모든 기호로 구성된 기본 어휘를 생성하고 기본 어휘의 두 기호에서 새로운 기호를 형성하는 병합 규칙을 학습합니다.
어휘가 원하는 어휘 크기에 도달할 때까지 위의 과정을 반복합니다.
어휘 크기는 토크나이저를 훈련시키기 전에 정의해야 하는 하이퍼파라미터라는 점을 유의하세요.
예를 들어, 사전 토큰화 후 빈도를 포함한 다음과 같은 어휘 집합이 결정되었다고 가정해 보겠습니다:
```
("hug", 10), ("pug", 5), ("pun", 12), ("bun", 4), ("hugs", 5)
```
결과적으로 기본 어휘는 `["b", "g", "h", "n", "p", "s", "u"]` 이고, 각 단어를 기본 어휘에 속하는 기호로 쪼개면 아래와 같습니다:
```
("h" "u" "g", 10), ("p" "u" "g", 5), ("p" "u" "n", 12), ("b" "u" "n", 4), ("h" "u" "g" "s", 5)
```
그런 다음 BPE는 가능한 각 기호 쌍의 빈도를 계산하여 가장 자주 발생하는 기호 쌍을 선택합니다.
위의 예시에서 `"h"` 뒤에 오는 `"u"`는 _10 + 5 = 15_ 번 등장합니다. (`"hug"`에서 10번, `"hugs"`에서 5번 등장)
하지만, 가장 등장 빈도가 높은 기호 쌍은 `"u"` 뒤에 오는 `"g"`입니다. _10 + 5 + 5 = 20_ 으로 총 20번 등장합니다.
따라서 토크나이저가 병합하는 가장 첫 번째 쌍은 `"u"` 뒤에 오는 `"g"`입니다. `"ug"`가 어휘에 추가되어 어휘는 다음과 같습니다:
```
("h" "ug", 10), ("p" "ug", 5), ("p" "u" "n", 12), ("b" "u" "n", 4), ("h" "ug" "s", 5)
```
BPE는 다음으로 가장 많이 등장하는 기호 쌍을 식별합니다.
`"u"` 뒤에 오는 `"n"`은 16번 등장해 `"un"` 으로 병합되어 어휘에 추가됩니다.
그 다음으로 빈도수가 놓은 기호 쌍은 `"h"` 뒤에 오는 `"ug"`로 15번 등장합니다.
다시 한 번 `"hug"`로 병합되어 어휘에 추가됩니다.
현재 단계에서 어휘는 `["b", "g", "h", "n", "p", "s", "u", "ug", "un", "hug"]` 이고, 고유 단어 집합은 다음과 같습니다:
```
("hug", 10), ("p" "ug", 5), ("p" "un", 12), ("b" "un", 4), ("hug" "s", 5)
```
이 시점에서 바이트 페어 인코딩 훈련이 중단된다고 가정하면, 훈련된 병합 규칙은 새로운 단어에 적용됩니다(기본 어휘에 포함된 기호가 새로운 단어에 포함되지 않는 한).
예를 들어, 단어 `"bug"`는 `["b", "ug"]`로 토큰화되지만, `"m"`이 기본 어휘에 없기 때문에 `"mug"`는 `["<unk>", "ug"]`로 토큰화될 것입니다.
훈련 데이터에는 단일 문자가 최소한 한 번 등장하기 때문에 일반적으로 `"m"`과 같은 단일 문자는 `"<unk>"` 기호로 대체되지 않지만, 이모티콘과 같은 특별한 문자인 경우에는 대체될 수 있습니다.
이전에 언급했듯이 어휘 크기(즉 기본 어휘 크기 + 병합 횟수)는 선택해야하는 하이퍼파라미터입니다.
예를 들어 [GPT](model_doc/gpt)의 기본 어휘 크기는 478, 40,000번의 병합 이후에 훈련을 종료하기 때문에 어휘 크기가 40,478입니다.
#### 바이트 수준 BPE (Byte-level BPE)[[bytelevel-bpe]]
가능한 모든 기본 문자를 포함하는 기본 어휘의 크기는 굉장히 커질 수 있습니다. (예: 모든 유니코드 문자를 기본 문자로 간주하는 경우)
더 나은 기본 어휘를 갖도록 [GPT-2](https://cdn.openai.com/better-language-models/language_models_are_unsupervised_multitask_learners.pdf)는 기본 어휘로 바이트(bytes)를 사용합니다.
이 방식은 모든 기본 문자가 어휘에 포함되도록 하면서 기본 어휘의 크기를 256으로 제한합니다.
구두점을 다루는 추가적인 규칙을 사용해 GPT2 토크나이저는 모든 텍스트를 <unk> 기호 없이 토큰화할 수 있습니다.
[GPT-2](model_doc/gpt)의 어휘 크기는 50,257로 256 바이트 크기의 기본 토큰, 특별한 end-of-text 토큰과 50,000번의 병합으로 학습한 기호로 구성됩니다.
<a id='wordpiece'></a>
### 워드피스 (WordPiece)[[wordpiece]]
워드피스는 [BERT](model_doc/bert), [DistilBERT](model_doc/distilbert), [Electra](model_doc/electra)에 사용된 서브워드 토큰화 알고리즘입니다.
이 알고리즘은 [Japanese and Korean Voice Search (Schuster et al., 2012)](https://static.googleusercontent.com/media/research.google.com/ja//pubs/archive/37842.pdf)에서 소개되었고, BPE와 굉장히 유사합니다.
워드피스는 훈련 데이터에 등장하는 모든 문자로 기본 어휘를 초기화한 후, 주어진 병합 규칙에 따라 점진적으로 학습합니다.
BPE와는 대조적으로 워드피스는 가장 빈도수가 높은 기호 쌍을 선택하지 않고, 어휘에 추가되었을 때 훈련 데이터의 우도가 최대화되는 쌍을 선택합니다.
정확히 무슨 의미일까요?
이전 예시를 참조하면, 훈련 데이터의 우도 값을 최대화하는 것은 모든 기호 쌍 중에서 첫 번째 기호와 두 번째 기호의 확률로 나눈 확률이 가장 큰 기호 쌍을 찾는 것과 동일합니다.
예를 들어 `"ug"`의 확률이 `"u"`와 `"g"` 각각으로 쪼개졌을 때 보다 높아야 `"u"` 뒤에 오는 `"g"`는 병합될 것입니다.
직관적으로 워드피스는 두 기호를 병합하여 _잃는_ 것을 평가하여 그만한 _가치_가 있는지 확인한다는 점에서 BPE와 약간 다릅니다.
<a id='unigram'></a>
### 유니그램 (Unigram)[[unigram]]
유니그램은 [Subword Regularization: Improving Neural Network Translation Models with Multiple Subword Candidates (Kudo, 2018)](https://arxiv.org/pdf/1804.10959.pdf)에서 제안된 서브워드 토큰화 알고리즘입니다.
BPE나 워드피스와 달리 유니그램은 기본 어휘를 많은 수의 기호로 초기화한 후 각 기호를 점진적으로 줄여 더 작은 어휘를 얻습니다.
예를 들어 기본 어휘는 모든 사전 토큰화된 단어와 가장 일반적인 하위 문자열에 해당할 수 있습니다.
유니그램은 transformers 모델에서 직접적으로 사용되지는 않지만, [SentencePiece](#sentencepiece)와 함께 사용됩니다.
각 훈련 단계에서 유니그램 알고리즘은 현재 어휘와 유니그램 언어 모델이 주어졌을 때 훈련 데이터에 대한 손실(흔히 로그 우도로 정의됨)을 정의합니다.
그런 다음 어휘의 각 기호에 대해 알고리즘은 해당 기호를 어휘에서 제거할 경우 전체 손실이 얼마나 증가할지 계산합니다.
이후에 유니그램은 손실 증가율이 가장 낮은 기호의 p(보통 10% 또는 20%) 퍼센트를 제거합니다. (제거되는 기호는 훈련 데이터에 대한 전체 손실에 가장 작은 영향을 미칩니다.)
어휘가 원하는 크기에 도달할 때까지 이 과정을 반복합니다.
유니그램 알고리즘은 항상 기본 문자를 포함해 어떤 단어라도 토큰화할 수 있습니다.
유니그램이 병합 규칙에 기반하지 않기 떄문에 (BPE나 워드피스와는 대조적으로), 해당 알고리즘은 훈련 이후에 새로운 텍스트를 토큰화하는데 여러 가지 방법이 있습니다.
예를 들어, 훈련된 유니그램 토큰화가 다음과 같은 어휘를 가진다면:
```
["b", "g", "h", "n", "p", "s", "u", "ug", "un", "hug"],
```
`"hugs"`는 두 가지로 토큰화할 수 있습니다. `["hug", "s"]`와 `["h", "ug", "s"]` 또는 `["h", "u", "g", "s"]`.
그렇다면 어떤 토큰화 방법을 선택해야 할까요?
유니그램은 어휘를 저장하는 것 외에도 훈련 말뭉치에 각 토큰의 확률을 저장하여 훈련 후 가능한 각 토큰화의 확률을 계산할 수 있도록 합니다.
이 알고리즘은 단순히 실제로 가장 가능성이 높은 토큰화를 선택하지만, 확률에 따라 가능한 토큰화를 샘플링할 수 있는 가능성도 제공합니다.
이러한 확률은 토크나이저가 학습한 손실에 의해 정의됩니다.
단어로 구성된 훈련 데이터를 \\(x_{1}, \dots, x_{N}\\)라 하고, 단어 \\(x_{i}\\)에 대한 가능한 모든 토큰화 결과를 \\(S(x_{i})\\)라 한다면, 전체 손실은 다음과 같이 정의됩니다:
$$\mathcal{L} = -\sum_{i=1}^{N} \log \left ( \sum_{x \in S(x_{i})} p(x) \right )$$
<a id='sentencepiece'></a>
### 센텐스피스 (SentencePiece)[[sentencepiece]]
지금까지 다룬 토큰화 알고리즘은 동일한 문제를 가집니다: 입력 텍스트는 공백을 사용하여 단어를 구분한다고 가정합니다.
하지만, 모든 언어에서 단어를 구분하기 위해 공백을 사용하지 않습니다.
한가지 가능한 해결방안은 특정 언어에 특화된 사전 토크나이저를 사용하는 것입니다. 예를 들어 [XLM](model_doc/xlm)은 특정 중국어, 일본어, 태국어 사전 토크나이저를 사용합니다.
이 문제를 일반적인 방법으로 해결하기 위해, [SentencePiece: A simple and language independent subword tokenizer and detokenizer for Neural Text Processing (Kudo et al., 2018)](https://arxiv.org/pdf/1808.06226.pdf)는 입력을 스트림으로 처리해 공백를 하나의 문자로 사용합니다.
이후에 BPE 또는 유니그램 알고리즘을 사용해 적절한 어휘를 구성합니다.
[`XLNetTokenizer`]는 센텐스피스를 사용하기 때문에, 위에서 다룬 예시에서 어휘에 `"▁"`가 포함되어있습니다.
모든 토큰을 합친 후 `"▁"`을 공백으로 대체하면 되기 때문에 센텐스피스로 토큰화된 결과는 디코딩하기 수월합니다.
transformers에서 제공하는 센텐스피스 토크나이저를 사용하는 모든 모델은 유니그램과 함께 사용됩니다.
[ALBERT](model_doc/albert), [XLNet](model_doc/xlnet), [Marian](model_doc/marian), [T5](model_doc/t5) 모델이 센텐스피스 토크나이저를 사용합니다. | transformers/docs/source/ko/tokenizer_summary.md/0 | {
"file_path": "transformers/docs/source/ko/tokenizer_summary.md",
"repo_id": "transformers",
"token_count": 15149
} | 272 |
<!--Copyright 2022 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# Modelos multilinguísticos para inferência
[[open-in-colab]]
Existem vários modelos multilinguísticos no 🤗 Transformers e seus usos para inferência diferem dos modelos monolíngues.
No entanto, nem *todos* os usos dos modelos multilíngues são tão diferentes.
Alguns modelos, como o [google-bert/bert-base-multilingual-uncased](https://huggingface.co/google-bert/bert-base-multilingual-uncased),
podem ser usados como se fossem monolíngues. Este guia irá te ajudar a usar modelos multilíngues cujo uso difere
para o propósito de inferência.
## XLM
O XLM tem dez checkpoints diferentes dos quais apenas um é monolíngue.
Os nove checkpoints restantes do modelo são subdivididos em duas categorias:
checkpoints que usam de language embeddings e os que não.
### XLM com language embeddings
Os seguintes modelos de XLM usam language embeddings para especificar a linguagem utilizada para a inferência.
- `FacebookAI/xlm-mlm-ende-1024` (Masked language modeling, English-German)
- `FacebookAI/xlm-mlm-enfr-1024` (Masked language modeling, English-French)
- `FacebookAI/xlm-mlm-enro-1024` (Masked language modeling, English-Romanian)
- `FacebookAI/xlm-mlm-xnli15-1024` (Masked language modeling, XNLI languages)
- `FacebookAI/xlm-mlm-tlm-xnli15-1024` (Masked language modeling + translation, XNLI languages)
- `FacebookAI/xlm-clm-enfr-1024` (Causal language modeling, English-French)
- `FacebookAI/xlm-clm-ende-1024` (Causal language modeling, English-German)
Os language embeddings são representados por um tensor de mesma dimensão que os `input_ids` passados ao modelo.
Os valores destes tensores dependem do idioma utilizado e se identificam pelos atributos `lang2id` e `id2lang` do tokenizador.
Neste exemplo, carregamos o checkpoint `FacebookAI/xlm-clm-enfr-1024`(Causal language modeling, English-French):
```py
>>> import torch
>>> from transformers import XLMTokenizer, XLMWithLMHeadModel
>>> tokenizer = XLMTokenizer.from_pretrained("FacebookAI/xlm-clm-enfr-1024")
>>> model = XLMWithLMHeadModel.from_pretrained("FacebookAI/xlm-clm-enfr-1024")
```
O atributo `lang2id` do tokenizador mostra os idiomas deste modelo e seus ids:
```py
>>> print(tokenizer.lang2id)
{'en': 0, 'fr': 1}
```
Em seguida, cria-se um input de exemplo:
```py
>>> input_ids = torch.tensor([tokenizer.encode("Wikipedia was used to")]) # batch size of 1
```
Estabelece-se o id do idioma, por exemplo `"en"`, e utiliza-se o mesmo para definir a language embedding.
A language embedding é um tensor preenchido com `0`, que é o id de idioma para o inglês.
Este tensor deve ser do mesmo tamanho que os `input_ids`.
```py
>>> language_id = tokenizer.lang2id["en"] # 0
>>> langs = torch.tensor([language_id] * input_ids.shape[1]) # torch.tensor([0, 0, 0, ..., 0])
>>> # We reshape it to be of size (batch_size, sequence_length)
>>> langs = langs.view(1, -1) # is now of shape [1, sequence_length] (we have a batch size of 1)
```
Agora você pode passar os `input_ids` e a language embedding ao modelo:
```py
>>> outputs = model(input_ids, langs=langs)
```
O script [run_generation.py](https://github.com/huggingface/transformers/tree/master/examples/pytorch/text-generation/run_generation.py) pode gerar um texto com language embeddings utilizando os checkpoints `xlm-clm`.
### XLM sem language embeddings
Os seguintes modelos XLM não requerem o uso de language embeddings durante a inferência:
- `FacebookAI/xlm-mlm-17-1280` (Modelagem de linguagem com máscara, 17 idiomas)
- `FacebookAI/xlm-mlm-100-1280` (Modelagem de linguagem com máscara, 100 idiomas)
Estes modelos são utilizados para representações genéricas de frase diferentemente dos checkpoints XLM anteriores.
## BERT
Os seguintes modelos do BERT podem ser utilizados para tarefas multilinguísticas:
- `google-bert/bert-base-multilingual-uncased` (Modelagem de linguagem com máscara + Previsão de frases, 102 idiomas)
- `google-bert/bert-base-multilingual-cased` (Modelagem de linguagem com máscara + Previsão de frases, 104 idiomas)
Estes modelos não requerem language embeddings durante a inferência. Devem identificar a linguagem a partir
do contexto e realizar a inferência em sequência.
## XLM-RoBERTa
Os seguintes modelos do XLM-RoBERTa podem ser utilizados para tarefas multilinguísticas:
- `FacebookAI/xlm-roberta-base` (Modelagem de linguagem com máscara, 100 idiomas)
- `FacebookAI/xlm-roberta-large` Modelagem de linguagem com máscara, 100 idiomas)
O XLM-RoBERTa foi treinado com 2,5 TB de dados do CommonCrawl recém-criados e testados em 100 idiomas.
Proporciona fortes vantagens sobre os modelos multilinguísticos publicados anteriormente como o mBERT e o XLM em tarefas
subsequentes como a classificação, a rotulagem de sequências e à respostas a perguntas.
## M2M100
Os seguintes modelos de M2M100 podem ser utilizados para traduções multilinguísticas:
- `facebook/m2m100_418M` (Tradução)
- `facebook/m2m100_1.2B` (Tradução)
Neste exemplo, o checkpoint `facebook/m2m100_418M` é carregado para traduzir do mandarim ao inglês. É possível
estabelecer o idioma de origem no tokenizador:
```py
>>> from transformers import M2M100ForConditionalGeneration, M2M100Tokenizer
>>> en_text = "Do not meddle in the affairs of wizards, for they are subtle and quick to anger."
>>> chinese_text = "不要插手巫師的事務, 因為他們是微妙的, 很快就會發怒."
>>> tokenizer = M2M100Tokenizer.from_pretrained("facebook/m2m100_418M", src_lang="zh")
>>> model = M2M100ForConditionalGeneration.from_pretrained("facebook/m2m100_418M")
```
Tokenização do texto:
```py
>>> encoded_zh = tokenizer(chinese_text, return_tensors="pt")
```
O M2M100 força o id do idioma de destino como o primeiro token gerado para traduzir ao idioma de destino.
É definido o `forced_bos_token_id` como `en` no método `generate` para traduzir ao inglês.
```py
>>> generated_tokens = model.generate(**encoded_zh, forced_bos_token_id=tokenizer.get_lang_id("en"))
>>> tokenizer.batch_decode(generated_tokens, skip_special_tokens=True)
'Do not interfere with the matters of the witches, because they are delicate and will soon be angry.'
```
## MBart
Os seguintes modelos do MBart podem ser utilizados para tradução multilinguística:
- `facebook/mbart-large-50-one-to-many-mmt` (Tradução automática multilinguística de um a vários, 50 idiomas)
- `facebook/mbart-large-50-many-to-many-mmt` (Tradução automática multilinguística de vários a vários, 50 idiomas)
- `facebook/mbart-large-50-many-to-one-mmt` (Tradução automática multilinguística vários a um, 50 idiomas)
- `facebook/mbart-large-50` (Tradução multilinguística, 50 idiomas)
- `facebook/mbart-large-cc25`
Neste exemplo, carrega-se o checkpoint `facebook/mbart-large-50-many-to-many-mmt` para traduzir do finlandês ao inglês.
Pode-se definir o idioma de origem no tokenizador:
```py
>>> from transformers import AutoTokenizer, AutoModelForSeq2SeqLM
>>> en_text = "Do not meddle in the affairs of wizards, for they are subtle and quick to anger."
>>> fi_text = "Älä sekaannu velhojen asioihin, sillä ne ovat hienovaraisia ja nopeasti vihaisia."
>>> tokenizer = AutoTokenizer.from_pretrained("facebook/mbart-large-50-many-to-many-mmt", src_lang="fi_FI")
>>> model = AutoModelForSeq2SeqLM.from_pretrained("facebook/mbart-large-50-many-to-many-mmt")
```
Tokenizando o texto:
```py
>>> encoded_en = tokenizer(en_text, return_tensors="pt")
```
O MBart força o id do idioma de destino como o primeiro token gerado para traduzir ao idioma de destino.
É definido o `forced_bos_token_id` como `en` no método `generate` para traduzir ao inglês.
```py
>>> generated_tokens = model.generate(**encoded_en, forced_bos_token_id=tokenizer.lang_code_to_id("en_XX"))
>>> tokenizer.batch_decode(generated_tokens, skip_special_tokens=True)
"Don't interfere with the wizard's affairs, because they are subtle, will soon get angry."
```
Se estiver usando o checkpoint `facebook/mbart-large-50-many-to-one-mmt` não será necessário forçar o id do idioma de destino
como sendo o primeiro token generado, caso contrário a usagem é a mesma.
| transformers/docs/source/pt/multilingual.md/0 | {
"file_path": "transformers/docs/source/pt/multilingual.md",
"repo_id": "transformers",
"token_count": 3212
} | 273 |
<!--Copyright 2022 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# 使用AutoClass加载预训练实例
由于存在许多不同的Transformer架构，因此为您的checkpoint创建一个可用架构可能会具有挑战性。通过`AutoClass`可以自动推断并从给定的checkpoint加载正确的架构, 这也是🤗 Transformers易于使用、简单且灵活核心规则的重要一部分。`from_pretrained()`方法允许您快速加载任何架构的预训练模型，因此您不必花费时间和精力从头开始训练模型。生成这种与checkpoint无关的代码意味着，如果您的代码适用于一个checkpoint，它将适用于另一个checkpoint - 只要它们是为了类似的任务进行训练的 - 即使架构不同。
<Tip>
请记住，架构指的是模型的结构，而checkpoints是给定架构的权重。例如，[BERT](https://huggingface.co/google-bert/bert-base-uncased)是一种架构，而`google-bert/bert-base-uncased`是一个checkpoint。模型是一个通用术语，可以指代架构或checkpoint。
</Tip>
在这个教程中，学习如何：
* 加载预训练的分词器（`tokenizer`）
* 加载预训练的图像处理器(`image processor`)
* 加载预训练的特征提取器(`feature extractor`)
* 加载预训练的处理器(`processor`)
* 加载预训练的模型。
## AutoTokenizer
几乎所有的NLP任务都以`tokenizer`开始。`tokenizer`将您的输入转换为模型可以处理的格式。
使用[`AutoTokenizer.from_pretrained`]加载`tokenizer`：
```py
>>> from transformers import AutoTokenizer
>>> tokenizer = AutoTokenizer.from_pretrained("google-bert/bert-base-uncased")
```
然后按照如下方式对输入进行分词：
```py
>>> sequence = "In a hole in the ground there lived a hobbit."
>>> print(tokenizer(sequence))
{'input_ids': [101, 1999, 1037, 4920, 1999, 1996, 2598, 2045, 2973, 1037, 7570, 10322, 4183, 1012, 102],
'token_type_ids': [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
'attention_mask': [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]}
```
## AutoImageProcessor
对于视觉任务，`image processor`将图像处理成正确的输入格式。
```py
>>> from transformers import AutoImageProcessor
>>> image_processor = AutoImageProcessor.from_pretrained("google/vit-base-patch16-224")
```
## AutoFeatureExtractor
对于音频任务,`feature extractor`将音频信号处理成正确的输入格式。
使用[`AutoFeatureExtractor.from_pretrained`]加载`feature extractor`：
```py
>>> from transformers import AutoFeatureExtractor
>>> feature_extractor = AutoFeatureExtractor.from_pretrained(
... "ehcalabres/wav2vec2-lg-xlsr-en-speech-emotion-recognition"
... )
```
## AutoProcessor
多模态任务需要一种`processor`，将两种类型的预处理工具结合起来。例如，[LayoutLMV2](model_doc/layoutlmv2)模型需要一个`image processo`来处理图像和一个`tokenizer`来处理文本；`processor`将两者结合起来。
使用[`AutoProcessor.from_pretrained`]加载`processor`：
```py
>>> from transformers import AutoProcessor
>>> processor = AutoProcessor.from_pretrained("microsoft/layoutlmv2-base-uncased")
```
## AutoModel
<frameworkcontent>
<pt>
最后，`AutoModelFor`类让你可以加载给定任务的预训练模型（参见[这里](model_doc/auto)获取可用任务的完整列表）。例如，使用[`AutoModelForSequenceClassification.from_pretrained`]加载用于序列分类的模型：
```py
>>> from transformers import AutoModelForSequenceClassification
>>> model = AutoModelForSequenceClassification.from_pretrained("distilbert/distilbert-base-uncased")
```
轻松地重复使用相同的checkpoint来为不同任务加载模型架构：
```py
>>> from transformers import AutoModelForTokenClassification
>>> model = AutoModelForTokenClassification.from_pretrained("distilbert/distilbert-base-uncased")
```
<Tip warning={true}>
对于PyTorch模型，`from_pretrained()`方法使用`torch.load()`，它内部使用已知是不安全的`pickle`。一般来说，永远不要加载来自不可信来源或可能被篡改的模型。对于托管在Hugging Face Hub上的公共模型，这种安全风险在一定程度上得到了缓解，因为每次提交都会进行[恶意软件扫描](https://huggingface.co/docs/hub/security-malware)。请参阅[Hub文档](https://huggingface.co/docs/hub/security)以了解最佳实践，例如使用GPG进行[签名提交验证](https://huggingface.co/docs/hub/security-gpg#signing-commits-with-gpg)。
TensorFlow和Flax的checkpoints不受影响，并且可以在PyTorch架构中使用`from_tf`和`from_flax`关键字参数,通过`from_pretrained`方法进行加载,来绕过此问题。
</Tip>
一般来说，我们建议使用`AutoTokenizer`类和`AutoModelFor`类来加载预训练的模型实例。这样可以确保每次加载正确的架构。在下一个[教程](preprocessing)中，学习如何使用新加载的`tokenizer`, `image processor`, `feature extractor`和`processor`对数据集进行预处理以进行微调。
</pt>
<tf>
最后，`TFAutoModelFor`类允许您加载给定任务的预训练模型（请参阅[这里](model_doc/auto)获取可用任务的完整列表）。例如，使用[`TFAutoModelForSequenceClassification.from_pretrained`]加载用于序列分类的模型：
```py
>>> from transformers import TFAutoModelForSequenceClassification
>>> model = TFAutoModelForSequenceClassification.from_pretrained("distilbert/distilbert-base-uncased")
```
轻松地重复使用相同的checkpoint来为不同任务加载模型架构：
```py
>>> from transformers import TFAutoModelForTokenClassification
>>> model = TFAutoModelForTokenClassification.from_pretrained("distilbert/distilbert-base-uncased")
```
一般来说，我们推荐使用`AutoTokenizer`类和`TFAutoModelFor`类来加载模型的预训练实例。这样可以确保每次加载正确的架构。在下一个[教程](preprocessing)中，学习如何使用新加载的`tokenizer`, `image processor`, `feature extractor`和`processor`对数据集进行预处理以进行微调。
</tf>
</frameworkcontent>
| transformers/docs/source/zh/autoclass_tutorial.md/0 | {
"file_path": "transformers/docs/source/zh/autoclass_tutorial.md",
"repo_id": "transformers",
"token_count": 3394
} | 274 |
<!--Copyright 2020 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# 自定义层和工具
此页面列出了库使用的所有自定义层，以及它为模型提供的实用函数。
其中大多数只有在您研究库中模型的代码时才有用。
## Pytorch自定义模块
[[autodoc]] pytorch_utils.Conv1D
[[autodoc]] modeling_utils.PoolerStartLogits
- forward
[[autodoc]] modeling_utils.PoolerEndLogits
- forward
[[autodoc]] modeling_utils.PoolerAnswerClass
- forward
[[autodoc]] modeling_utils.SquadHeadOutput
[[autodoc]] modeling_utils.SQuADHead
- forward
[[autodoc]] modeling_utils.SequenceSummary
- forward
## PyTorch帮助函数
[[autodoc]] pytorch_utils.apply_chunking_to_forward
[[autodoc]] pytorch_utils.find_pruneable_heads_and_indices
[[autodoc]] pytorch_utils.prune_layer
[[autodoc]] pytorch_utils.prune_conv1d_layer
[[autodoc]] pytorch_utils.prune_linear_layer
## TensorFlow自定义层
[[autodoc]] modeling_tf_utils.TFConv1D
[[autodoc]] modeling_tf_utils.TFSequenceSummary
## TensorFlow loss 函数
[[autodoc]] modeling_tf_utils.TFCausalLanguageModelingLoss
[[autodoc]] modeling_tf_utils.TFMaskedLanguageModelingLoss
[[autodoc]] modeling_tf_utils.TFMultipleChoiceLoss
[[autodoc]] modeling_tf_utils.TFQuestionAnsweringLoss
[[autodoc]] modeling_tf_utils.TFSequenceClassificationLoss
[[autodoc]] modeling_tf_utils.TFTokenClassificationLoss
## TensorFlow帮助函数
[[autodoc]] modeling_tf_utils.get_initializer
[[autodoc]] modeling_tf_utils.keras_serializable
[[autodoc]] modeling_tf_utils.shape_list
| transformers/docs/source/zh/internal/modeling_utils.md/0 | {
"file_path": "transformers/docs/source/zh/internal/modeling_utils.md",
"repo_id": "transformers",
"token_count": 845
} | 275 |
<!--Copyright 2023 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
specific language governing permissions and limitations under the License.
⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
rendered properly in your Markdown viewer.
-->
# 预处理
[[open-in-colab]]
在您可以在数据集上训练模型之前，数据需要被预处理为期望的模型输入格式。无论您的数据是文本、图像还是音频，它们都需要被转换并组合成批量的张量。🤗 Transformers 提供了一组预处理类来帮助准备数据以供模型使用。在本教程中，您将了解以下内容：
* 对于文本，使用[分词器](./main_classes/tokenizer)(`Tokenizer`)将文本转换为一系列标记(`tokens`)，并创建`tokens`的数字表示，将它们组合成张量。
* 对于语音和音频，使用[特征提取器](./main_classes/feature_extractor)(`Feature extractor`)从音频波形中提取顺序特征并将其转换为张量。
* 图像输入使用[图像处理器](./main_classes/image)(`ImageProcessor`)将图像转换为张量。
* 多模态输入，使用[处理器](./main_classes/processors)(`Processor`)结合了`Tokenizer`和`ImageProcessor`或`Processor`。
<Tip>
`AutoProcessor` **始终**有效的自动选择适用于您使用的模型的正确`class`，无论您使用的是`Tokenizer`、`ImageProcessor`、`Feature extractor`还是`Processor`。
</Tip>
在开始之前，请安装🤗 Datasets，以便您可以加载一些数据集来进行实验：
```bash
pip install datasets
```
## 自然语言处理
<Youtube id="Yffk5aydLzg"/>
处理文本数据的主要工具是[Tokenizer](main_classes/tokenizer)。`Tokenizer`根据一组规则将文本拆分为`tokens`。然后将这些`tokens`转换为数字，然后转换为张量，成为模型的输入。模型所需的任何附加输入都由`Tokenizer`添加。
<Tip>
如果您计划使用预训练模型，重要的是使用与之关联的预训练`Tokenizer`。这确保文本的拆分方式与预训练语料库相同，并在预训练期间使用相同的标记-索引的对应关系（通常称为*词汇表*-`vocab`）。
</Tip>
开始使用[`AutoTokenizer.from_pretrained`]方法加载一个预训练`tokenizer`。这将下载模型预训练的`vocab`：
```py
>>> from transformers import AutoTokenizer
>>> tokenizer = AutoTokenizer.from_pretrained("google-bert/bert-base-cased")
```
然后将您的文本传递给`tokenizer`：
```py
>>> encoded_input = tokenizer("Do not meddle in the affairs of wizards, for they are subtle and quick to anger.")
>>> print(encoded_input)
{'input_ids': [101, 2079, 2025, 19960, 10362, 1999, 1996, 3821, 1997, 16657, 1010, 2005, 2027, 2024, 11259, 1998, 4248, 2000, 4963, 1012, 102],
'token_type_ids': [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
'attention_mask': [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]}
```
`tokenizer`返回一个包含三个重要对象的字典：
* [input_ids](glossary#input-ids) 是与句子中每个`token`对应的索引。
* [attention_mask](glossary#attention-mask) 指示是否应该关注一个`token`。
* [token_type_ids](glossary#token-type-ids) 在存在多个序列时标识一个`token`属于哪个序列。
通过解码 `input_ids` 来返回您的输入：
```py
>>> tokenizer.decode(encoded_input["input_ids"])
'[CLS] Do not meddle in the affairs of wizards, for they are subtle and quick to anger. [SEP]'
```
如您所见，`tokenizer`向句子中添加了两个特殊`token` - `CLS` 和 `SEP`（分类器和分隔符）。并非所有模型都需要特殊`token`，但如果需要，`tokenizer`会自动为您添加。
如果有多个句子需要预处理，将它们作为列表传递给`tokenizer`：
```py
>>> batch_sentences = [
... "But what about second breakfast?",
... "Don't think he knows about second breakfast, Pip.",
... "What about elevensies?",
... ]
>>> encoded_inputs = tokenizer(batch_sentences)
>>> print(encoded_inputs)
{'input_ids': [[101, 1252, 1184, 1164, 1248, 6462, 136, 102],
[101, 1790, 112, 189, 1341, 1119, 3520, 1164, 1248, 6462, 117, 21902, 1643, 119, 102],
[101, 1327, 1164, 5450, 23434, 136, 102]],
'token_type_ids': [[0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0]],
'attention_mask': [[1, 1, 1, 1, 1, 1, 1, 1],
[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
[1, 1, 1, 1, 1, 1, 1]]}
```
### 填充
句子的长度并不总是相同，这可能会成为一个问题，因为模型输入的张量需要具有统一的形状。填充是一种策略，通过在较短的句子中添加一个特殊的`padding token`，以确保张量是矩形的。
将 `padding` 参数设置为 `True`，以使批次中较短的序列填充到与最长序列相匹配的长度：
```py
>>> batch_sentences = [
... "But what about second breakfast?",
... "Don't think he knows about second breakfast, Pip.",
... "What about elevensies?",
... ]
>>> encoded_input = tokenizer(batch_sentences, padding=True)
>>> print(encoded_input)
{'input_ids': [[101, 1252, 1184, 1164, 1248, 6462, 136, 102, 0, 0, 0, 0, 0, 0, 0],
[101, 1790, 112, 189, 1341, 1119, 3520, 1164, 1248, 6462, 117, 21902, 1643, 119, 102],
[101, 1327, 1164, 5450, 23434, 136, 102, 0, 0, 0, 0, 0, 0, 0, 0]],
'token_type_ids': [[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]],
'attention_mask': [[1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0],
[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
[1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0]]}
```
第一句和第三句因为较短，通过`0`进行填充，。
### 截断
另一方面，有时候一个序列可能对模型来说太长了。在这种情况下，您需要将序列截断为更短的长度。
将 `truncation` 参数设置为 `True`，以将序列截断为模型接受的最大长度：
```py
>>> batch_sentences = [
... "But what about second breakfast?",
... "Don't think he knows about second breakfast, Pip.",
... "What about elevensies?",
... ]
>>> encoded_input = tokenizer(batch_sentences, padding=True, truncation=True)
>>> print(encoded_input)
{'input_ids': [[101, 1252, 1184, 1164, 1248, 6462, 136, 102, 0, 0, 0, 0, 0, 0, 0],
[101, 1790, 112, 189, 1341, 1119, 3520, 1164, 1248, 6462, 117, 21902, 1643, 119, 102],
[101, 1327, 1164, 5450, 23434, 136, 102, 0, 0, 0, 0, 0, 0, 0, 0]],
'token_type_ids': [[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]],
'attention_mask': [[1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0],
[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
[1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0]]}
```
<Tip>
查看[填充和截断](./pad_truncation)概念指南，了解更多有关填充和截断参数的信息。
</Tip>
### 构建张量
最后，`tokenizer`可以返回实际输入到模型的张量。
将 `return_tensors` 参数设置为 `pt`（对于PyTorch）或 `tf`（对于TensorFlow）：
<frameworkcontent>
<pt>
```py
>>> batch_sentences = [
... "But what about second breakfast?",
... "Don't think he knows about second breakfast, Pip.",
... "What about elevensies?",
... ]
>>> encoded_input = tokenizer(batch_sentences, padding=True, truncation=True, return_tensors="pt")
>>> print(encoded_input)
{'input_ids': tensor([[101, 1252, 1184, 1164, 1248, 6462, 136, 102, 0, 0, 0, 0, 0, 0, 0],
[101, 1790, 112, 189, 1341, 1119, 3520, 1164, 1248, 6462, 117, 21902, 1643, 119, 102],
[101, 1327, 1164, 5450, 23434, 136, 102, 0, 0, 0, 0, 0, 0, 0, 0]]),
'token_type_ids': tensor([[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]]),
'attention_mask': tensor([[1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0],
[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
[1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0]])}
```
</pt>
<tf>
```py
>>> batch_sentences = [
... "But what about second breakfast?",
... "Don't think he knows about second breakfast, Pip.",
... "What about elevensies?",
... ]
>>> encoded_input = tokenizer(batch_sentences, padding=True, truncation=True, return_tensors="tf")
>>> print(encoded_input)
{'input_ids': <tf.Tensor: shape=(2, 9), dtype=int32, numpy=
array([[101, 1252, 1184, 1164, 1248, 6462, 136, 102, 0, 0, 0, 0, 0, 0, 0],
[101, 1790, 112, 189, 1341, 1119, 3520, 1164, 1248, 6462, 117, 21902, 1643, 119, 102],
[101, 1327, 1164, 5450, 23434, 136, 102, 0, 0, 0, 0, 0, 0, 0, 0]],
dtype=int32)>,
'token_type_ids': <tf.Tensor: shape=(2, 9), dtype=int32, numpy=
array([[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]], dtype=int32)>,
'attention_mask': <tf.Tensor: shape=(2, 9), dtype=int32, numpy=
array([[1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0],
[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
[1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0]], dtype=int32)>}
```
</tf>
</frameworkcontent>
## 音频
对于音频任务，您需要[feature extractor](main_classes/feature_extractor)来准备您的数据集以供模型使用。`feature extractor`旨在从原始音频数据中提取特征，并将它们转换为张量。
加载[MInDS-14](https://huggingface.co/datasets/PolyAI/minds14)数据集（有关如何加载数据集的更多详细信息，请参阅🤗 [Datasets教程](https://huggingface.co/docs/datasets/load_hub)）以了解如何在音频数据集中使用`feature extractor`：
```py
>>> from datasets import load_dataset, Audio
>>> dataset = load_dataset("PolyAI/minds14", name="en-US", split="train")
```
访问 `audio` 列的第一个元素以查看输入。调用 `audio` 列会自动加载和重新采样音频文件：
```py
>>> dataset[0]["audio"]
{'array': array([ 0. , 0.00024414, -0.00024414, ..., -0.00024414,
0. , 0. ], dtype=float32),
'path': '/root/.cache/huggingface/datasets/downloads/extracted/f14948e0e84be638dd7943ac36518a4cf3324e8b7aa331c5ab11541518e9368c/en-US~JOINT_ACCOUNT/602ba55abb1e6d0fbce92065.wav',
'sampling_rate': 8000}
```
这会返回三个对象：
* `array` 是加载的语音信号 - 并在必要时重新采为`1D array`。
* `path` 指向音频文件的位置。
* `sampling_rate` 是每秒测量的语音信号数据点数量。
对于本教程，您将使用[Wav2Vec2](https://huggingface.co/facebook/wav2vec2-base)模型。查看模型卡片，您将了解到Wav2Vec2是在16kHz采样的语音音频数据上预训练的。重要的是，您的音频数据的采样率要与用于预训练模型的数据集的采样率匹配。如果您的数据的采样率不同，那么您需要对数据进行重新采样。
1. 使用🤗 Datasets的[`~datasets.Dataset.cast_column`]方法将采样率提升到16kHz：
```py
>>> dataset = dataset.cast_column("audio", Audio(sampling_rate=16_000))
```
2. 再次调用 `audio` 列以重新采样音频文件：
```py
>>> dataset[0]["audio"]
{'array': array([ 2.3443763e-05, 2.1729663e-04, 2.2145823e-04, ...,
3.8356509e-05, -7.3497440e-06, -2.1754686e-05], dtype=float32),
'path': '/root/.cache/huggingface/datasets/downloads/extracted/f14948e0e84be638dd7943ac36518a4cf3324e8b7aa331c5ab11541518e9368c/en-US~JOINT_ACCOUNT/602ba55abb1e6d0fbce92065.wav',
'sampling_rate': 16000}
```
接下来，加载一个`feature extractor`以对输入进行标准化和填充。当填充文本数据时，会为较短的序列添加 `0`。相同的理念适用于音频数据。`feature extractor`添加 `0` - 被解释为静音 - 到`array` 。
使用 [`AutoFeatureExtractor.from_pretrained`] 加载`feature extractor`：
```py
>>> from transformers import AutoFeatureExtractor
>>> feature_extractor = AutoFeatureExtractor.from_pretrained("facebook/wav2vec2-base")
```
将音频 `array` 传递给`feature extractor`。我们还建议在`feature extractor`中添加 `sampling_rate` 参数，以更好地调试可能发生的静音错误：
```py
>>> audio_input = [dataset[0]["audio"]["array"]]
>>> feature_extractor(audio_input, sampling_rate=16000)
{'input_values': [array([ 3.8106556e-04, 2.7506407e-03, 2.8015103e-03, ...,
5.6335266e-04, 4.6588284e-06, -1.7142107e-04], dtype=float32)]}
```
就像`tokenizer`一样，您可以应用填充或截断来处理批次中的可变序列。请查看这两个音频样本的序列长度：
```py
>>> dataset[0]["audio"]["array"].shape
(173398,)
>>> dataset[1]["audio"]["array"].shape
(106496,)
```
创建一个函数来预处理数据集，以使音频样本具有相同的长度。通过指定最大样本长度，`feature extractor`将填充或截断序列以使其匹配：
```py
>>> def preprocess_function(examples):
... audio_arrays = [x["array"] for x in examples["audio"]]
... inputs = feature_extractor(
... audio_arrays,
... sampling_rate=16000,
... padding=True,
... max_length=100000,
... truncation=True,
... )
... return inputs
```
将`preprocess_function`应用于数据集中的前几个示例：
```py
>>> processed_dataset = preprocess_function(dataset[:5])
```
现在样本长度是相同的，并且与指定的最大长度匹配。您现在可以将经过处理的数据集传递给模型了！
```py
>>> processed_dataset["input_values"][0].shape
(100000,)
>>> processed_dataset["input_values"][1].shape
(100000,)
```
## 计算机视觉
对于计算机视觉任务，您需要一个[ image processor](main_classes/image_processor)来准备数据集以供模型使用。图像预处理包括多个步骤将图像转换为模型期望输入的格式。这些步骤包括但不限于调整大小、标准化、颜色通道校正以及将图像转换为张量。
<Tip>
图像预处理通常遵循某种形式的图像增强。图像预处理和图像增强都会改变图像数据，但它们有不同的目的：
* 图像增强可以帮助防止过拟合并增加模型的鲁棒性。您可以在数据增强方面充分发挥创造性 - 调整亮度和颜色、裁剪、旋转、调整大小、缩放等。但要注意不要改变图像的含义。
* 图像预处理确保图像与模型预期的输入格式匹配。在微调计算机视觉模型时，必须对图像进行与模型训练时相同的预处理。
您可以使用任何您喜欢的图像增强库。对于图像预处理，请使用与模型相关联的`ImageProcessor`。
</Tip>
加载[food101](https://huggingface.co/datasets/food101)数据集（有关如何加载数据集的更多详细信息，请参阅🤗 [Datasets教程](https://huggingface.co/docs/datasets/load_hub)）以了解如何在计算机视觉数据集中使用图像处理器：
<Tip>
因为数据集相当大，请使用🤗 Datasets的`split`参数加载训练集中的少量样本！
</Tip>
```py
>>> from datasets import load_dataset
>>> dataset = load_dataset("food101", split="train[:100]")
```
接下来，使用🤗 Datasets的[`Image`](https://huggingface.co/docs/datasets/package_reference/main_classes?highlight=image#datasets.Image)功能查看图像：
```py
>>> dataset[0]["image"]
```
<div class="flex justify-center">
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/vision-preprocess-tutorial.png"/>
</div>
使用 [`AutoImageProcessor.from_pretrained`] 加载`image processor`：
```py
>>> from transformers import AutoImageProcessor
>>> image_processor = AutoImageProcessor.from_pretrained("google/vit-base-patch16-224")
```
首先，让我们进行图像增强。您可以使用任何您喜欢的库，但在本教程中，我们将使用torchvision的[`transforms`](https://pytorch.org/vision/stable/transforms.html)模块。如果您有兴趣使用其他数据增强库，请参阅[Albumentations](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/image_classification_albumentations.ipynb)或[Kornia notebooks](https://colab.research.google.com/github/huggingface/notebooks/blob/main/examples/image_classification_kornia.ipynb)中的示例。
1. 在这里，我们使用[`Compose`](https://pytorch.org/vision/master/generated/torchvision.transforms.Compose.html)将[`RandomResizedCrop`](https://pytorch.org/vision/main/generated/torchvision.transforms.RandomResizedCrop.html)和 [`ColorJitter`](https://pytorch.org/vision/main/generated/torchvision.transforms.ColorJitter.html)变换连接在一起。请注意，对于调整大小，我们可以从`image_processor`中获取图像尺寸要求。对于一些模型，精确的高度和宽度需要被定义，对于其他模型只需定义`shortest_edge`。
```py
>>> from torchvision.transforms import RandomResizedCrop, ColorJitter, Compose
>>> size = (
... image_processor.size["shortest_edge"]
... if "shortest_edge" in image_processor.size
... else (image_processor.size["height"], image_processor.size["width"])
... )
>>> _transforms = Compose([RandomResizedCrop(size), ColorJitter(brightness=0.5, hue=0.5)])
```
2. 模型接受 [`pixel_values`](model_doc/visionencoderdecoder#transformers.VisionEncoderDecoderModel.forward.pixel_values) 作为输入。`ImageProcessor` 可以进行图像的标准化，并生成适当的张量。创建一个函数，将图像增强和图像预处理步骤组合起来处理批量图像，并生成 `pixel_values`：
```py
>>> def transforms(examples):
... images = [_transforms(img.convert("RGB")) for img in examples["image"]]
... examples["pixel_values"] = image_processor(images, do_resize=False, return_tensors="pt")["pixel_values"]
... return examples
```
<Tip>
在上面的示例中，我们设置`do_resize=False`，因为我们已经在图像增强转换中调整了图像的大小，并利用了适当的`image_processor`的`size`属性。如果您在图像增强期间不调整图像的大小，请将此参数排除在外。默认情况下`ImageProcessor`将处理调整大小。
如果希望将图像标准化步骤为图像增强的一部分，请使用`image_processor.image_mean`和`image_processor.image_std`。
</Tip>
3. 然后使用🤗 Datasets的[`set_transform`](https://huggingface.co/docs/datasets/process#format-transform)在运行时应用这些变换：
```py
>>> dataset.set_transform(transforms)
```
4. 现在，当您访问图像时，您将注意到`image processor`已添加了 `pixel_values`。您现在可以将经过处理的数据集传递给模型了！
```py
>>> dataset[0].keys()
```
这是在应用变换后的图像样子。图像已被随机裁剪，并其颜色属性发生了变化。
```py
>>> import numpy as np
>>> import matplotlib.pyplot as plt
>>> img = dataset[0]["pixel_values"]
>>> plt.imshow(img.permute(1, 2, 0))
```
<div class="flex justify-center">
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/preprocessed_image.png"/>
</div>
<Tip>
对于诸如目标检测、语义分割、实例分割和全景分割等任务，`ImageProcessor`提供了训练后处理方法。这些方法将模型的原始输出转换为有意义的预测，如边界框或分割地图。
</Tip>
### 填充
在某些情况下，例如，在微调[DETR](./model_doc/detr)时，模型在训练时应用了尺度增强。这可能导致批处理中的图像大小不同。您可以使用[`DetrImageProcessor.pad`]来指定自定义的`collate_fn`将图像批处理在一起。
```py
>>> def collate_fn(batch):
... pixel_values = [item["pixel_values"] for item in batch]
... encoding = image_processor.pad(pixel_values, return_tensors="pt")
... labels = [item["labels"] for item in batch]
... batch = {}
... batch["pixel_values"] = encoding["pixel_values"]
... batch["pixel_mask"] = encoding["pixel_mask"]
... batch["labels"] = labels
... return batch
```
## 多模态
对于涉及多模态输入的任务，您需要[processor](main_classes/processors)来为模型准备数据集。`processor`将两个处理对象-例如`tokenizer`和`feature extractor`-组合在一起。
加载[LJ Speech](https://huggingface.co/datasets/lj_speech)数据集（有关如何加载数据集的更多详细信息，请参阅🤗 [Datasets 教程](https://huggingface.co/docs/datasets/load_hub)）以了解如何使用`processor`进行自动语音识别（ASR）：
```py
>>> from datasets import load_dataset
>>> lj_speech = load_dataset("lj_speech", split="train")
```
对于ASR（自动语音识别），主要关注`audio`和`text`，因此可以删除其他列：
```py
>>> lj_speech = lj_speech.map(remove_columns=["file", "id", "normalized_text"])
```
现在查看`audio`和`text`列：
```py
>>> lj_speech[0]["audio"]
{'array': array([-7.3242188e-04, -7.6293945e-04, -6.4086914e-04, ...,
7.3242188e-04, 2.1362305e-04, 6.1035156e-05], dtype=float32),
'path': '/root/.cache/huggingface/datasets/downloads/extracted/917ece08c95cf0c4115e45294e3cd0dee724a1165b7fc11798369308a465bd26/LJSpeech-1.1/wavs/LJ001-0001.wav',
'sampling_rate': 22050}
>>> lj_speech[0]["text"]
'Printing, in the only sense with which we are at present concerned, differs from most if not from all the arts and crafts represented in the Exhibition'
```
请记住，您应始终[重新采样](preprocessing#audio)音频数据集的采样率，以匹配用于预训练模型数据集的采样率！
```py
>>> lj_speech = lj_speech.cast_column("audio", Audio(sampling_rate=16_000))
```
使用[`AutoProcessor.from_pretrained`]加载一个`processor`：
```py
>>> from transformers import AutoProcessor
>>> processor = AutoProcessor.from_pretrained("facebook/wav2vec2-base-960h")
```
1. 创建一个函数，用于将包含在 `array` 中的音频数据处理为 `input_values`，并将 `text` 标记为 `labels`。这些将是输入模型的数据：
```py
>>> def prepare_dataset(example):
... audio = example["audio"]
... example.update(processor(audio=audio["array"], text=example["text"], sampling_rate=16000))
... return example
```
2. 将 `prepare_dataset` 函数应用于一个示例：
```py
>>> prepare_dataset(lj_speech[0])
```
`processor`现在已经添加了 `input_values` 和 `labels`，并且采样率也正确降低为为16kHz。现在可以将处理后的数据集传递给模型！
| transformers/docs/source/zh/preprocessing.md/0 | {
"file_path": "transformers/docs/source/zh/preprocessing.md",
"repo_id": "transformers",
"token_count": 12751
} | 276 |
# Image Captioning (vision-encoder-text-decoder model) training example
The following example showcases how to finetune a vision-encoder-text-decoder model for image captioning
using the JAX/Flax backend, leveraging 🤗 Transformers library's [FlaxVisionEncoderDecoderModel](https://huggingface.co/docs/transformers/model_doc/vision-encoder-decoder#transformers.FlaxVisionEncoderDecoderModel).
JAX/Flax allows you to trace pure functions and compile them into efficient, fused accelerator code on both GPU and TPU.
Models written in JAX/Flax are **immutable** and updated in a purely functional
way which enables simple and efficient model parallelism.
`run_image_captioning_flax.py` is a lightweight example of how to download and preprocess a dataset from the 🤗 Datasets
library or use your own files (jsonlines or csv), then fine-tune one of the architectures above on it.
For custom datasets in `jsonlines` format please see: https://huggingface.co/docs/datasets/loading_datasets#json-files and you also will find examples of these below.
### Download COCO dataset (2017)
This example uses COCO dataset (2017) through a custom dataset script, which requires users to manually download the
COCO dataset before training.
```bash
mkdir data
cd data
wget http://images.cocodataset.org/zips/train2017.zip
wget http://images.cocodataset.org/zips/val2017.zip
wget http://images.cocodataset.org/zips/test2017.zip
wget http://images.cocodataset.org/annotations/annotations_trainval2017.zip
wget http://images.cocodataset.org/annotations/image_info_test2017.zip
cd ..
```
### Create a model from a vision encoder model and a text decoder model
Next, we create a [FlaxVisionEncoderDecoderModel](https://huggingface.co/docs/transformers/model_doc/visionencoderdecoder#transformers.FlaxVisionEncoderDecoderModel) instance from a pre-trained vision encoder ([ViT](https://huggingface.co/docs/transformers/model_doc/vit#transformers.FlaxViTModel)) and a pre-trained text decoder ([GPT2](https://huggingface.co/docs/transformers/model_doc/gpt2#transformers.FlaxGPT2Model)):
```bash
python3 create_model_from_encoder_decoder_models.py \
--output_dir model \
--encoder_model_name_or_path google/vit-base-patch16-224-in21k \
--decoder_model_name_or_path openai-community/gpt2
```
### Train the model
Finally, we can run the example script to train the model:
```bash
python3 run_image_captioning_flax.py \
--output_dir ./image-captioning-training-results \
--model_name_or_path model \
--dataset_name ydshieh/coco_dataset_script \
--dataset_config_name=2017 \
--data_dir $PWD/data \
--image_column image_path \
--caption_column caption \
--do_train --do_eval --predict_with_generate \
--num_train_epochs 1 \
--eval_steps 500 \
--learning_rate 3e-5 --warmup_steps 0 \
--per_device_train_batch_size 32 \
--per_device_eval_batch_size 32 \
--overwrite_output_dir \
--max_target_length 32 \
--num_beams 8 \
--preprocessing_num_workers 16 \
--logging_steps 10 \
--block_size 16384 \
--push_to_hub
```
This should finish in about 1h30 on Cloud TPU, with validation loss and ROUGE2 score of 2.0153 and 14.64 respectively
after 1 epoch. Training statistics can be accessed on [Models](https://huggingface.co/ydshieh/image-captioning-training-results/tensorboard).
| transformers/examples/flax/image-captioning/README.md/0 | {
"file_path": "transformers/examples/flax/image-captioning/README.md",
"repo_id": "transformers",
"token_count": 1084
} | 277 |
#!/usr/bin/env python
# coding=utf-8
# Copyright 2023 The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
Fine-tuning the Flax library models for sequence to sequence speech recognition.
"""
# You can also adapt this script on your own sequence to sequence task. Pointers for this are left as comments.
import logging
import os
import sys
import time
from dataclasses import field
from functools import partial
from pathlib import Path
from typing import Any, Callable, Dict, List, Optional, Union
import datasets
import evaluate
import flax
import jax
import jax.numpy as jnp
import numpy as np
import optax
from datasets import DatasetDict, load_dataset
from flax import jax_utils, traverse_util
from flax.jax_utils import pad_shard_unpad, unreplicate
from flax.training import train_state
from flax.training.common_utils import get_metrics, onehot, shard, shard_prng_key
from huggingface_hub import HfApi
from torch.utils.data import DataLoader
from tqdm import tqdm
import transformers
from transformers import (
AutoConfig,
AutoFeatureExtractor,
AutoProcessor,
AutoTokenizer,
FlaxAutoModelForSpeechSeq2Seq,
HfArgumentParser,
Seq2SeqTrainingArguments,
is_tensorboard_available,
)
from transformers.file_utils import get_full_repo_name
from transformers.utils import check_min_version, send_example_telemetry
from transformers.utils.versions import require_version
# Will error if the minimal version of Transformers is not installed. Remove at your own risk.
check_min_version("4.40.0.dev0")
require_version("datasets>=2.14.0", "To fix: pip install -r examples/flax/speech-recognition/requirements.txt")
logger = logging.getLogger(__name__)
@flax.struct.dataclass
class ModelArguments:
"""
Arguments pertaining to which model/config/tokenizer we are going to fine-tune from.
"""
model_name_or_path: str = field(
metadata={"help": "Path to pretrained model or model identifier from huggingface.co/models"}
)
config_name: Optional[str] = field(
default=None, metadata={"help": "Pretrained config name or path if not the same as model_name"}
)
tokenizer_name: Optional[str] = field(
default=None, metadata={"help": "Pretrained tokenizer name or path if not the same as model_name"}
)
feature_extractor_name: Optional[str] = field(
default=None, metadata={"help": "feature extractor name or path if not the same as model_name"}
)
cache_dir: Optional[str] = field(
default=None,
metadata={"help": "Where to store the pretrained models downloaded from huggingface.co"},
)
use_fast_tokenizer: bool = field(
default=True,
metadata={"help": "Whether to use one of the fast tokenizer (backed by the tokenizers library) or not."},
)
model_revision: str = field(
default="main",
metadata={"help": "The specific model version to use (can be a branch name, tag name or commit id)."},
)
use_auth_token: bool = field(
default=False,
metadata={
"help": "Will use the token generated when running `transformers-cli login` (necessary to use this script "
"with private models)."
},
)
dtype: Optional[str] = field(
default="float32",
metadata={
"help": (
"Floating-point format in which the model weights should be initialized and trained. Choose one of"
" `[float32, float16, bfloat16]`."
)
},
)
num_beams: Optional[int] = field(
default=None,
metadata={
"help": (
"Number of beams to use for evaluation. This argument will be passed to `model.generate`, "
"which is used during evaluation."
)
},
)
@flax.struct.dataclass
class DataTrainingArguments:
"""
Arguments pertaining to what data we are going to input our model for training and eval.
"""
dataset_name: str = field(
default=None, metadata={"help": "The name of the dataset to use (via the datasets library)."}
)
dataset_config_name: Optional[str] = field(
default=None, metadata={"help": "The configuration name of the dataset to use (via the datasets library)."}
)
text_column: Optional[str] = field(
default=None,
metadata={"help": "The name of the column in the datasets containing the full texts (for summarization)."},
)
dataset_cache_dir: Optional[str] = field(
default=None, metadata={"help": "Path to cache directory for saving and loading datasets"}
)
overwrite_cache: bool = field(
default=False, metadata={"help": "Overwrite the cached training and evaluation sets"}
)
preprocessing_num_workers: Optional[int] = field(
default=None,
metadata={"help": "The number of processes to use for the preprocessing."},
)
max_train_samples: Optional[int] = field(
default=None,
metadata={
"help": "For debugging purposes or quicker training, truncate the number of training examples to this "
"value if set."
},
)
max_eval_samples: Optional[int] = field(
default=None,
metadata={
"help": "For debugging purposes or quicker training, truncate the number of evaluation examples to this "
"value if set."
},
)
audio_column_name: str = field(
default="audio",
metadata={"help": "The name of the dataset column containing the audio data. Defaults to 'audio'"},
)
text_column_name: str = field(
default="text",
metadata={"help": "The name of the dataset column containing the text data. Defaults to 'text'"},
)
max_duration_in_seconds: float = field(
default=20.0,
metadata={"help": "Filter audio files that are longer than `max_duration_in_seconds` seconds"},
)
min_duration_in_seconds: float = field(
default=0.0,
metadata={"help": "Filter audio files that are shorter than `min_duration_in_seconds` seconds"},
)
max_label_length: float = field(
default=128,
metadata={"help": "Truncate transcriptions that are longer `max_eval_length` tokens."},
)
pad_input_to_multiple_of: Optional[int] = field(
default=None,
metadata={
"help": "If set will pad the input sequence to a multiple of the provided value. "
"This is important to avoid triggering recompilations on TPU. If unspecified, will default to padding the inputs to max length."
},
)
pad_target_to_multiple_of: Optional[int] = field(
default=None,
metadata={
"help": "If set will pad the target sequence to a multiple of the provided value. "
"This is important to avoid triggering recompilations on TPU. If unspecified, will default to padding the targets to max length."
},
)
preprocessing_only: bool = field(
default=False,
metadata={
"help": "Whether to only do data preprocessing and skip training. "
"This is especially useful when data preprocessing errors out in distributed training due to timeout. "
"In this case, one should run the preprocessing in a non-distributed setup with `preprocessing_only=True` "
"so that the cached datasets can consequently be loaded in distributed training"
},
)
train_split_name: str = field(
default="train",
metadata={
"help": "The name of the training data set split to use (via the datasets library). Defaults to 'train'"
},
)
eval_split_name: str = field(
default="validation",
metadata={
"help": "The name of the evaluation data set split to use (via the datasets library). Defaults to 'validation'"
},
)
do_lower_case: bool = field(
default=True,
metadata={"help": "Whether the target text should be lower cased."},
)
language: str = field(
default=None,
metadata={
"help": (
"Language for multilingual fine-tuning. This argument should be set for multilingual fine-tuning "
"only. For English speech recognition, it should be set to `None`."
)
},
)
task: str = field(
default="transcribe",
metadata={"help": "Task, either `transcribe` for speech recognition or `translate` for speech translation."},
)
def shift_tokens_right(label_ids: np.array, decoder_start_token_id: int) -> np.ndarray:
"""
Shift label ids one token to the right.
"""
shifted_label_ids = np.zeros_like(label_ids)
shifted_label_ids[:, 1:] = label_ids[:, :-1]
shifted_label_ids[:, 0] = decoder_start_token_id
return shifted_label_ids
@flax.struct.dataclass
class FlaxDataCollatorSpeechSeq2SeqWithPadding:
"""
Data collator that will dynamically pad the inputs received.
Args:
processor ([`Wav2Vec2Processor`])
The processor used for proccessing the data.
decoder_start_token_id (:obj: `int`)
The begin-of-sentence of the decoder.
input_padding (:obj:`bool`, :obj:`str` or :class:`~transformers.tokenization_utils_base.PaddingStrategy`, `optional`, defaults to :obj:`True`):
Select a strategy to pad the returned input sequences (according to the model's padding side and padding index)
among:
* :obj:`True` or :obj:`'longest'`: Pad to the longest sequence in the batch (or no padding if only a single
sequence if provided).
* :obj:`'max_length'`: Pad to a maximum length specified with the argument :obj:`max_length` or to the
maximum acceptable input length for the model if that argument is not provided.
* :obj:`False` or :obj:`'do_not_pad'` (default): No padding (i.e., can output a batch with sequences of
different lengths).
target_padding (:obj:`bool`, :obj:`str` or :class:`~transformers.tokenization_utils_base.PaddingStrategy`, `optional`, defaults to :obj:`True`):
Select a strategy to pad the returned target sequences (according to the model's padding side and padding index).
See above for details.
max_input_length (:obj:`float`, `optional`):
Maximum length of the ``input_values`` of the returned list and optionally padding length (see above).
max_target_length (:obj:`int`, `optional`):
Maximum length of the ``labels`` of the returned list and optionally padding length (see above).
pad_input_to_multiple_of (:obj:`int`, `optional`):
If set will pad the input sequence to a multiple of the provided value.
This is especially useful to enable the use of Tensor Cores on NVIDIA hardware with compute capability >=
7.5 (Volta).
pad_target_to_multiple_of (:obj:`int`, `optional`):
If set will pad the target sequence to a multiple of the provided value.
This is especially useful to enable the use of Tensor Cores on NVIDIA hardware with compute capability >=
7.5 (Volta).
"""
processor: Any
decoder_start_token_id: int
input_padding: Union[bool, str] = "longest"
target_padding: Union[bool, str] = "max_length"
max_input_length: Optional[float] = None
max_target_length: Optional[int] = None
pad_input_to_multiple_of: Optional[int] = None
pad_target_to_multiple_of: Optional[int] = None
def __call__(self, features: List[Dict[str, Union[List[int], np.ndarray]]]) -> Dict[str, np.ndarray]:
# split inputs and labels since they have to be of different lengths and need
# different padding methods
model_input_name = self.processor.model_input_names[0]
# dataloader returns a list of features which we convert to a dict
input_features = {model_input_name: [feature[model_input_name] for feature in features]}
label_features = {"input_ids": [feature["labels"] for feature in features]}
# reformat list to dict and set to pytorch format
batch = self.processor.feature_extractor.pad(
input_features,
max_length=self.max_input_length,
padding=self.input_padding,
pad_to_multiple_of=self.pad_input_to_multiple_of,
return_tensors="np",
)
labels_batch = self.processor.tokenizer.pad(
label_features,
max_length=self.max_target_length,
padding=self.target_padding,
pad_to_multiple_of=self.pad_target_to_multiple_of,
return_tensors="np",
)
# if bos token is appended in previous tokenization step,
# cut bos token here as it's append later anyways
labels = labels_batch["input_ids"]
if (labels[:, 0] == self.decoder_start_token_id).all().item():
labels = labels[:, 1:]
labels_batch.attention_mask = labels_batch.attention_mask[:, 1:]
decoder_input_ids = shift_tokens_right(labels, self.decoder_start_token_id)
# replace padding with -100 to ignore correctly when computing the loss
labels = np.ma.array(labels, mask=np.not_equal(labels_batch.attention_mask, 1))
labels = labels.filled(fill_value=-100)
batch["labels"] = labels
batch["decoder_input_ids"] = decoder_input_ids
return batch
class TrainState(train_state.TrainState):
dropout_rng: jnp.ndarray
def replicate(self):
return jax_utils.replicate(self).replace(dropout_rng=shard_prng_key(self.dropout_rng))
def write_metric(summary_writer, train_metrics, eval_metrics, train_time, step):
summary_writer.scalar("train_time", train_time, step)
train_metrics = get_metrics(train_metrics)
for key, vals in train_metrics.items():
tag = f"train_{key}"
for i, val in enumerate(vals):
summary_writer.scalar(tag, val, step - len(vals) + i + 1)
for metric_name, value in eval_metrics.items():
summary_writer.scalar(f"eval_{metric_name}", value, step)
def create_learning_rate_fn(
num_train_steps: int, num_warmup_steps: int, learning_rate: float
) -> Callable[[int], jnp.ndarray]:
"""Returns a linear warmup, linear_decay learning rate function."""
warmup_fn = optax.linear_schedule(init_value=0.0, end_value=learning_rate, transition_steps=num_warmup_steps)
decay_fn = optax.linear_schedule(
init_value=learning_rate, end_value=0, transition_steps=num_train_steps - num_warmup_steps
)
schedule_fn = optax.join_schedules(schedules=[warmup_fn, decay_fn], boundaries=[num_warmup_steps])
return schedule_fn
def main():
# 1. Parse input arguments
# See all possible arguments in src/transformers/training_args.py
# or by passing the --help flag to this script.
# We now keep distinct sets of args, for a cleaner separation of concerns.
parser = HfArgumentParser((ModelArguments, DataTrainingArguments, Seq2SeqTrainingArguments))
if len(sys.argv) == 2 and sys.argv[1].endswith(".json"):
# If we pass only one argument to the script and it's the path to a json file,
# let's parse it to get our arguments.
model_args, data_args, training_args = parser.parse_json_file(json_file=os.path.abspath(sys.argv[1]))
else:
model_args, data_args, training_args = parser.parse_args_into_dataclasses()
# Sending telemetry. Tracking the example usage helps us better allocate resources to maintain them. The
# information sent is the one passed as arguments along with your JAX/Flax versions.
send_example_telemetry("run_speech_recognition_seq2seq", model_args, data_args, framework="flax")
# 2. Setup logging
# Make one log on every process with the configuration for debugging.
logging.basicConfig(
format="%(asctime)s - %(levelname)s - %(name)s - %(message)s",
datefmt="%m/%d/%Y %H:%M:%S",
handlers=[logging.StreamHandler(sys.stdout)],
)
# Set the verbosity to info of the Transformers logger.
# We only want one process per machine to log things on the screen.
logger.setLevel(logging.INFO if jax.process_index() == 0 else logging.ERROR)
if jax.process_index() == 0:
datasets.utils.logging.set_verbosity_warning()
transformers.utils.logging.set_verbosity_info()
else:
datasets.utils.logging.set_verbosity_error()
transformers.utils.logging.set_verbosity_error()
logger.info("Training/evaluation parameters %s", training_args)
# Check the output dir is valid
if (
os.path.exists(training_args.output_dir)
and os.listdir(training_args.output_dir)
and training_args.do_train
and not training_args.overwrite_output_dir
):
raise ValueError(
f"Output directory ({training_args.output_dir}) already exists and is not empty. "
"Use `--overwrite_output_dir` to overcome."
)
# Handle the repository creation
if training_args.push_to_hub:
if training_args.hub_model_id is None:
repo_name = get_full_repo_name(
Path(training_args.output_dir).absolute().name, token=training_args.hub_token
)
else:
repo_name = training_args.hub_model_id
# Create repo and retrieve repo_id
api = HfApi()
repo_id = api.create_repo(repo_name, exist_ok=True, token=training_args.hub_token).repo_id
# 3. Load dataset
raw_datasets = DatasetDict()
if training_args.do_train:
raw_datasets["train"] = load_dataset(
data_args.dataset_name,
data_args.dataset_config_name,
split=data_args.train_split_name,
cache_dir=data_args.dataset_cache_dir,
num_proc=data_args.preprocessing_num_workers,
token=True if model_args.use_auth_token else None,
)
if training_args.do_eval:
raw_datasets["eval"] = load_dataset(
data_args.dataset_name,
data_args.dataset_config_name,
split=data_args.eval_split_name,
cache_dir=data_args.dataset_cache_dir,
num_proc=data_args.preprocessing_num_workers,
token=True if model_args.use_auth_token else None,
)
if not training_args.do_train and not training_args.do_eval:
raise ValueError(
"Cannot not train and not do evaluation. At least one of training or evaluation has to be performed."
)
if data_args.audio_column_name not in next(iter(raw_datasets.values())).column_names:
raise ValueError(
f"--audio_column_name '{data_args.audio_column_name}' not found in dataset '{data_args.dataset_name}'. "
"Make sure to set `--audio_column_name` to the correct audio column - one of "
f"{', '.join(next(iter(raw_datasets.values())).column_names)}."
)
if data_args.text_column_name not in next(iter(raw_datasets.values())).column_names:
raise ValueError(
f"--text_column_name {data_args.text_column_name} not found in dataset '{data_args.dataset_name}'. "
"Make sure to set `--text_column_name` to the correct text column - one of "
f"{', '.join(next(iter(raw_datasets.values())).column_names)}."
)
# 5. Load pretrained model, tokenizer, and feature extractor
config = AutoConfig.from_pretrained(
model_args.config_name if model_args.config_name else model_args.model_name_or_path,
cache_dir=model_args.cache_dir,
revision=model_args.model_revision,
token=True if model_args.use_auth_token else None,
)
feature_extractor = AutoFeatureExtractor.from_pretrained(
model_args.feature_extractor_name if model_args.feature_extractor_name else model_args.model_name_or_path,
cache_dir=model_args.cache_dir,
revision=model_args.model_revision,
token=True if model_args.use_auth_token else None,
)
tokenizer = AutoTokenizer.from_pretrained(
model_args.tokenizer_name if model_args.tokenizer_name else model_args.model_name_or_path,
cache_dir=model_args.cache_dir,
use_fast=model_args.use_fast_tokenizer,
revision=model_args.model_revision,
token=True if model_args.use_auth_token else None,
)
model = FlaxAutoModelForSpeechSeq2Seq.from_pretrained(
model_args.model_name_or_path,
config=config,
dtype=getattr(jnp, model_args.dtype),
cache_dir=model_args.cache_dir,
revision=model_args.model_revision,
token=True if model_args.use_auth_token else None,
)
if model.config.decoder_start_token_id is None:
raise ValueError("Make sure that `config.decoder_start_token_id` is correctly defined")
# 6. Resample speech dataset: `datasets` takes care of automatically loading and resampling the audio,
# so we just need to set the correct target sampling rate.
raw_datasets = raw_datasets.cast_column(
data_args.audio_column_name, datasets.features.Audio(sampling_rate=feature_extractor.sampling_rate)
)
# 7. Preprocessing the datasets.
# We need to read the audio files as arrays and tokenize the targets.
max_input_length = int(data_args.max_duration_in_seconds * feature_extractor.sampling_rate)
min_input_length = int(data_args.min_duration_in_seconds * feature_extractor.sampling_rate)
max_label_length = (
data_args.max_label_length if data_args.max_label_length is not None else model.config.max_length
)
pad_input_to_multiple_of = data_args.pad_input_to_multiple_of
pad_target_to_multiple_of = data_args.pad_target_to_multiple_of
audio_column_name = data_args.audio_column_name
num_workers = data_args.preprocessing_num_workers
text_column_name = data_args.text_column_name
model_input_name = feature_extractor.model_input_names[0]
do_lower_case = data_args.do_lower_case
if training_args.do_train and data_args.max_train_samples is not None:
raw_datasets["train"] = raw_datasets["train"].select(range(data_args.max_train_samples))
if training_args.do_eval and data_args.max_eval_samples is not None:
raw_datasets["eval"] = raw_datasets["eval"].select(range(data_args.max_eval_samples))
if data_args.language is not None:
# We only need to set the task id when the language is specified (i.e. in a multilingual setting)
tokenizer.set_prefix_tokens(language=data_args.language, task=data_args.task)
def prepare_dataset(batch):
# process audio
sample = batch[audio_column_name]
inputs = feature_extractor(sample["array"], sampling_rate=sample["sampling_rate"])
# process audio length
batch[model_input_name] = inputs.get(model_input_name)[0]
batch["input_length"] = len(sample["array"])
# process targets
input_str = batch[text_column_name].lower() if do_lower_case else batch[text_column_name]
batch["labels"] = tokenizer(input_str).input_ids
return batch
vectorized_datasets = raw_datasets.map(
prepare_dataset,
remove_columns=next(iter(raw_datasets.values())).column_names,
num_proc=num_workers,
desc="preprocess train and eval dataset",
)
# filter training data with inputs longer than max_input_length
def is_audio_in_length_range(length):
return min_input_length < length < max_input_length
vectorized_datasets = vectorized_datasets.filter(
is_audio_in_length_range,
num_proc=num_workers,
input_columns=["input_length"],
)
# for large datasets it is advised to run the preprocessing on a
# single machine first with `args.preprocessing_only` since there will mostly likely
# be a timeout when running the script in distributed mode.
# In a second step `args.preprocessing_only` can then be set to `False` to load the
# cached dataset
if data_args.preprocessing_only:
cache = {k: v.cache_files for k, v in vectorized_datasets.items()}
logger.info(f"Data preprocessing finished. Files cached at {cache}.")
return
# 8. Load Metric
metric = evaluate.load("wer", cache_dir=model_args.cache_dir)
def compute_metrics(preds, labels):
# replace padded labels by the padding token
for idx in range(len(labels)):
labels[idx][labels[idx] == -100] = tokenizer.pad_token_id
pred_str = tokenizer.batch_decode(preds, skip_special_tokens=True)
# we do not want to group tokens when computing the metrics
label_str = tokenizer.batch_decode(labels, skip_special_tokens=True)
wer = metric.compute(predictions=pred_str, references=label_str)
return {"wer": wer}
# 9. Save feature extractor, tokenizer and config
feature_extractor.save_pretrained(training_args.output_dir)
tokenizer.save_pretrained(training_args.output_dir)
config.save_pretrained(training_args.output_dir)
processor = AutoProcessor.from_pretrained(training_args.output_dir)
data_collator = FlaxDataCollatorSpeechSeq2SeqWithPadding(
processor=processor,
decoder_start_token_id=model.config.decoder_start_token_id,
input_padding="longest",
target_padding="longest",
max_target_length=max_label_length,
pad_input_to_multiple_of=pad_input_to_multiple_of,
pad_target_to_multiple_of=pad_target_to_multiple_of if pad_target_to_multiple_of else max_label_length,
)
# Enable tensorboard only on the master node
has_tensorboard = is_tensorboard_available()
if has_tensorboard and jax.process_index() == 0:
try:
from flax.metrics.tensorboard import SummaryWriter
summary_writer = SummaryWriter(log_dir=Path(training_args.output_dir))
except ImportError as ie:
has_tensorboard = False
logger.warning(
f"Unable to display metrics through TensorBoard because some package are not installed: {ie}"
)
else:
logger.warning(
"Unable to display metrics through TensorBoard because the package is not installed: "
"Please run pip install tensorboard to enable."
)
# Initialize our training
rng = jax.random.PRNGKey(training_args.seed)
rng, dropout_rng = jax.random.split(rng)
# Store some constant
num_epochs = int(training_args.num_train_epochs)
train_batch_size = int(training_args.per_device_train_batch_size) * jax.device_count()
per_device_eval_batch_size = int(training_args.per_device_eval_batch_size)
eval_batch_size = per_device_eval_batch_size * jax.device_count()
steps_per_epoch = len(vectorized_datasets["train"]) // train_batch_size
total_train_steps = steps_per_epoch * num_epochs
# Create learning rate schedule
linear_decay_lr_schedule_fn = create_learning_rate_fn(
total_train_steps,
training_args.warmup_steps,
training_args.learning_rate,
)
# We use Optax's "masking" functionality to not apply weight decay
# to bias and LayerNorm scale parameters. decay_mask_fn returns a
# mask boolean with the same structure as the parameters.
# The mask is True for parameters that should be decayed.
def decay_mask_fn(params):
flat_params = traverse_util.flatten_dict(params)
# find out all LayerNorm parameters
layer_norm_candidates = ["layer_norm", "self_attn_layer_norm", "final_layer_norm", "encoder_attn_layer_norm"]
layer_norm_named_params = {
layer[-2:]
for layer_norm_name in layer_norm_candidates
for layer in flat_params.keys()
if layer_norm_name in "".join(layer).lower()
}
flat_mask = {path: (path[-1] != "bias" and path[-2:] not in layer_norm_named_params) for path in flat_params}
return traverse_util.unflatten_dict(flat_mask)
# create adam optimizer
adamw = optax.adamw(
learning_rate=linear_decay_lr_schedule_fn,
b1=training_args.adam_beta1,
b2=training_args.adam_beta2,
eps=training_args.adam_epsilon,
weight_decay=training_args.weight_decay,
mask=decay_mask_fn,
)
# Setup train state
state = TrainState.create(apply_fn=model.__call__, params=model.params, tx=adamw, dropout_rng=dropout_rng)
# label smoothed cross entropy
def loss_fn(logits, labels, label_smoothing_factor=0.0):
"""
The label smoothing implementation is adapted from Flax's official example:
https://github.com/google/flax/blob/87a211135c6a377c8f29048a1cac3840e38b9da4/examples/wmt/train.py#L104
"""
vocab_size = logits.shape[-1]
confidence = 1.0 - label_smoothing_factor
low_confidence = (1.0 - confidence) / (vocab_size - 1)
normalizing_constant = -(
confidence * jnp.log(confidence) + (vocab_size - 1) * low_confidence * jnp.log(low_confidence + 1e-20)
)
soft_labels = onehot(labels, vocab_size, on_value=confidence, off_value=low_confidence)
loss = optax.softmax_cross_entropy(logits, soft_labels)
loss = loss - normalizing_constant
# ignore padded tokens from loss, i.e. where labels are not set to -100
padding_mask = labels >= 0
loss = loss * padding_mask
loss = loss.sum()
num_labels = padding_mask.sum()
return loss, num_labels
# Define gradient update step fn
def train_step(state, batch, label_smoothing_factor=0.0):
dropout_rng, new_dropout_rng = jax.random.split(state.dropout_rng)
def compute_loss(params):
labels = batch.pop("labels")
logits = state.apply_fn(**batch, params=params, dropout_rng=dropout_rng, train=True)[0]
loss, num_labels = loss_fn(logits, labels, label_smoothing_factor)
return loss, num_labels
grad_fn = jax.value_and_grad(compute_loss, has_aux=True)
(loss, num_labels), grad = grad_fn(state.params)
num_labels = jax.lax.psum(num_labels, "batch")
# true loss = total loss / total samples
loss = jax.lax.psum(loss, "batch")
loss = jax.tree_util.tree_map(lambda x: x / num_labels, loss)
# true grad = total grad / total samples
grad = jax.lax.psum(grad, "batch")
grad = jax.tree_util.tree_map(lambda x: x / num_labels, grad)
new_state = state.apply_gradients(grads=grad, dropout_rng=new_dropout_rng)
metrics = {"loss": loss, "learning_rate": linear_decay_lr_schedule_fn(state.step)}
return new_state, metrics
# Define eval fn
def eval_step(params, batch, label_smoothing_factor=0.0):
labels = batch.pop("labels")
logits = model(**batch, params=params, train=False)[0]
loss, num_labels = loss_fn(logits, labels, label_smoothing_factor)
num_labels = jax.lax.psum(num_labels, "batch")
# true loss = total loss / total samples
loss = jax.lax.psum(loss, "batch")
loss = jax.tree_util.tree_map(lambda x: x / num_labels, loss)
metrics = {"loss": loss}
return metrics
# Define generation function
num_beams = model_args.num_beams if model_args.num_beams is not None else model.config.num_beams
gen_kwargs = {"max_length": max_label_length, "num_beams": num_beams}
def generate_step(params, batch):
model.params = params
output_ids = model.generate(batch[model_input_name], attention_mask=batch.get("attention_mask"), **gen_kwargs)
return output_ids.sequences
# Create parallel version of the train and eval step
p_train_step = jax.pmap(
partial(train_step, label_smoothing_factor=training_args.label_smoothing_factor), "batch", donate_argnums=(0,)
)
p_eval_step = jax.pmap(partial(eval_step, label_smoothing_factor=training_args.label_smoothing_factor), "batch")
p_generate_step = jax.pmap(generate_step, "batch")
# Replicate the train state on each device
state = state.replicate()
logger.info("***** Running training *****")
logger.info(f" Num examples = {len(vectorized_datasets['train'])}")
logger.info(f" Num Epochs = {num_epochs}")
logger.info(f" Instantaneous batch size per device = {training_args.per_device_train_batch_size}")
logger.info(f" Total train batch size (w. parallel & distributed) = {train_batch_size}")
logger.info(f" Total optimization steps = {total_train_steps}")
train_time = 0
epochs = tqdm(range(num_epochs), desc=f"Epoch ... (1/{num_epochs})", position=0)
for epoch in epochs:
# ======================== Training ================================
train_start = time.time()
train_metrics = []
# Generate an epoch by shuffling sampling indices from the train dataset and create a data loader
vectorized_datasets["train"] = vectorized_datasets["train"].shuffle(training_args.seed)
train_loader = DataLoader(
vectorized_datasets["train"],
batch_size=train_batch_size,
drop_last=True,
collate_fn=data_collator,
num_workers=training_args.dataloader_num_workers,
)
# train
for batch in tqdm(train_loader, desc="Training...", position=1, leave=False):
batch = shard(batch.data)
state, train_metric = p_train_step(state, batch)
train_metrics.append(train_metric)
train_time += time.time() - train_start
train_metric = unreplicate(train_metric)
epochs.write(
f"Epoch... ({epoch + 1}/{num_epochs} | Loss: {train_metric['loss']}, Learning Rate:"
f" {train_metric['learning_rate']})"
)
# ======================== Evaluating ==============================
eval_metrics = []
eval_preds = []
eval_labels = []
eval_loader = DataLoader(
vectorized_datasets["eval"],
batch_size=eval_batch_size,
drop_last=False,
collate_fn=data_collator,
num_workers=training_args.dataloader_num_workers,
)
for batch in tqdm(eval_loader, desc="Evaluating...", position=2, leave=False):
# Model forward
labels = batch["labels"]
metrics = pad_shard_unpad(p_eval_step, static_return=True)(
state.params, batch.data, min_device_batch=per_device_eval_batch_size
)
eval_metrics.append(metrics)
# generation
if training_args.predict_with_generate:
generated_ids = pad_shard_unpad(p_generate_step)(state.params, batch.data)
eval_preds.extend(jax.device_get(generated_ids.reshape(-1, gen_kwargs["max_length"])))
eval_labels.extend(labels)
# normalize eval metrics
eval_metrics = get_metrics(eval_metrics)
eval_metrics = jax.tree_util.tree_map(jnp.mean, eval_metrics)
# compute WER metric
wer_desc = ""
if training_args.predict_with_generate:
wer_metric = compute_metrics(eval_preds, eval_labels)
eval_metrics.update(wer_metric)
wer_desc = " ".join([f"Eval {key}: {value} |" for key, value in wer_metric.items()])
# Print metrics and update progress bar
desc = f"Epoch... ({epoch + 1}/{num_epochs} | Eval Loss: {eval_metrics['loss']} | {wer_desc})"
epochs.write(desc)
epochs.desc = desc
# Save metrics
if has_tensorboard and jax.process_index() == 0:
cur_step = epoch * (len(vectorized_datasets["train"]) // train_batch_size)
write_metric(summary_writer, train_metrics, eval_metrics, train_time, cur_step)
# save checkpoint after each epoch and push checkpoint to the hub
if jax.process_index() == 0:
params = jax.device_get(jax.tree_util.tree_map(lambda x: x[0], state.params))
model.save_pretrained(training_args.output_dir, params=params)
tokenizer.save_pretrained(training_args.output_dir)
if training_args.push_to_hub:
api.upload_folder(
commit_message=f"Saving weights and logs of epoch {epoch}",
folder_path=training_args.output_dir,
repo_id=repo_id,
repo_type="model",
token=training_args.hub_token,
)
if __name__ == "__main__":
main()
| transformers/examples/flax/speech-recognition/run_flax_speech_recognition_seq2seq.py/0 | {
"file_path": "transformers/examples/flax/speech-recognition/run_flax_speech_recognition_seq2seq.py",
"repo_id": "transformers",
"token_count": 14910
} | 278 |
#!/usr/bin/env python
import argparse
import json
from typing import List
from ltp import LTP
from transformers import BertTokenizer
def _is_chinese_char(cp):
"""Checks whether CP is the codepoint of a CJK character."""
# This defines a "chinese character" as anything in the CJK Unicode block:
# https://en.wikipedia.org/wiki/CJK_Unified_Ideographs_(Unicode_block)
#
# Note that the CJK Unicode block is NOT all Japanese and Korean characters,
# despite its name. The modern Korean Hangul alphabet is a different block,
# as is Japanese Hiragana and Katakana. Those alphabets are used to write
# space-separated words, so they are not treated specially and handled
# like the all of the other languages.
if (
(cp >= 0x4E00 and cp <= 0x9FFF)
or (cp >= 0x3400 and cp <= 0x4DBF) #
or (cp >= 0x20000 and cp <= 0x2A6DF) #
or (cp >= 0x2A700 and cp <= 0x2B73F) #
or (cp >= 0x2B740 and cp <= 0x2B81F) #
or (cp >= 0x2B820 and cp <= 0x2CEAF) #
or (cp >= 0xF900 and cp <= 0xFAFF)
or (cp >= 0x2F800 and cp <= 0x2FA1F) #
): #
return True
return False
def is_chinese(word: str):
# word like '180' or '身高' or '神'
for char in word:
char = ord(char)
if not _is_chinese_char(char):
return 0
return 1
def get_chinese_word(tokens: List[str]):
word_set = set()
for token in tokens:
chinese_word = len(token) > 1 and is_chinese(token)
if chinese_word:
word_set.add(token)
word_list = list(word_set)
return word_list
def add_sub_symbol(bert_tokens: List[str], chinese_word_set: set()):
if not chinese_word_set:
return bert_tokens
max_word_len = max([len(w) for w in chinese_word_set])
bert_word = bert_tokens
start, end = 0, len(bert_word)
while start < end:
single_word = True
if is_chinese(bert_word[start]):
l = min(end - start, max_word_len)
for i in range(l, 1, -1):
whole_word = "".join(bert_word[start : start + i])
if whole_word in chinese_word_set:
for j in range(start + 1, start + i):
bert_word[j] = "##" + bert_word[j]
start = start + i
single_word = False
break
if single_word:
start += 1
return bert_word
def prepare_ref(lines: List[str], ltp_tokenizer: LTP, bert_tokenizer: BertTokenizer):
ltp_res = []
for i in range(0, len(lines), 100):
res = ltp_tokenizer.seg(lines[i : i + 100])[0]
res = [get_chinese_word(r) for r in res]
ltp_res.extend(res)
assert len(ltp_res) == len(lines)
bert_res = []
for i in range(0, len(lines), 100):
res = bert_tokenizer(lines[i : i + 100], add_special_tokens=True, truncation=True, max_length=512)
bert_res.extend(res["input_ids"])
assert len(bert_res) == len(lines)
ref_ids = []
for input_ids, chinese_word in zip(bert_res, ltp_res):
input_tokens = []
for id in input_ids:
token = bert_tokenizer._convert_id_to_token(id)
input_tokens.append(token)
input_tokens = add_sub_symbol(input_tokens, chinese_word)
ref_id = []
# We only save pos of chinese subwords start with ##, which mean is part of a whole word.
for i, token in enumerate(input_tokens):
if token[:2] == "##":
clean_token = token[2:]
# save chinese tokens' pos
if len(clean_token) == 1 and _is_chinese_char(ord(clean_token)):
ref_id.append(i)
ref_ids.append(ref_id)
assert len(ref_ids) == len(bert_res)
return ref_ids
def main(args):
# For Chinese (Ro)Bert, the best result is from : RoBERTa-wwm-ext (https://github.com/ymcui/Chinese-BERT-wwm)
# If we want to fine-tune these model, we have to use same tokenizer : LTP (https://github.com/HIT-SCIR/ltp)
with open(args.file_name, "r", encoding="utf-8") as f:
data = f.readlines()
data = [line.strip() for line in data if len(line) > 0 and not line.isspace()] # avoid delimiter like '\u2029'
ltp_tokenizer = LTP(args.ltp) # faster in GPU device
bert_tokenizer = BertTokenizer.from_pretrained(args.bert)
ref_ids = prepare_ref(data, ltp_tokenizer, bert_tokenizer)
with open(args.save_path, "w", encoding="utf-8") as f:
data = [json.dumps(ref) + "\n" for ref in ref_ids]
f.writelines(data)
if __name__ == "__main__":
parser = argparse.ArgumentParser(description="prepare_chinese_ref")
parser.add_argument(
"--file_name",
type=str,
default="./resources/chinese-demo.txt",
help="file need process, same as training data in lm",
)
parser.add_argument(
"--ltp", type=str, default="./resources/ltp", help="resources for LTP tokenizer, usually a path"
)
parser.add_argument("--bert", type=str, default="./resources/robert", help="resources for Bert tokenizer")
parser.add_argument("--save_path", type=str, default="./resources/ref.txt", help="path to save res")
args = parser.parse_args()
main(args)
| transformers/examples/legacy/run_chinese_ref.py/0 | {
"file_path": "transformers/examples/legacy/run_chinese_ref.py",
"repo_id": "transformers",
"token_count": 2389
} | 279 |
# Copyright 2020 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import logging
import os
import sys
from pathlib import Path
from unittest.mock import patch
from parameterized import parameterized
from run_eval import run_generate
from run_eval_search import run_search
from transformers.testing_utils import CaptureStdout, TestCasePlus, slow
from utils import ROUGE_KEYS
logging.basicConfig(level=logging.DEBUG)
logger = logging.getLogger()
def _dump_articles(path: Path, articles: list):
content = "\n".join(articles)
Path(path).open("w").writelines(content)
T5_TINY = "patrickvonplaten/t5-tiny-random"
BART_TINY = "sshleifer/bart-tiny-random"
MBART_TINY = "sshleifer/tiny-mbart"
stream_handler = logging.StreamHandler(sys.stdout)
logger.addHandler(stream_handler)
logging.disable(logging.CRITICAL) # remove noisy download output from tracebacks
class TestTheRest(TestCasePlus):
def run_eval_tester(self, model):
input_file_name = Path(self.get_auto_remove_tmp_dir()) / "utest_input.source"
output_file_name = input_file_name.parent / "utest_output.txt"
assert not output_file_name.exists()
articles = [" New York (CNN)When Liana Barrientos was 23 years old, she got married in Westchester County."]
_dump_articles(input_file_name, articles)
score_path = str(Path(self.get_auto_remove_tmp_dir()) / "scores.json")
task = "translation_en_to_de" if model == T5_TINY else "summarization"
testargs = f"""
run_eval_search.py
{model}
{input_file_name}
{output_file_name}
--score_path {score_path}
--task {task}
--num_beams 2
--length_penalty 2.0
""".split()
with patch.object(sys, "argv", testargs):
run_generate()
assert Path(output_file_name).exists()
# os.remove(Path(output_file_name))
# test one model to quickly (no-@slow) catch simple problems and do an
# extensive testing of functionality with multiple models as @slow separately
def test_run_eval(self):
self.run_eval_tester(T5_TINY)
# any extra models should go into the list here - can be slow
@parameterized.expand([BART_TINY, MBART_TINY])
@slow
def test_run_eval_slow(self, model):
self.run_eval_tester(model)
# testing with 2 models to validate: 1. translation (t5) 2. summarization (mbart)
@parameterized.expand([T5_TINY, MBART_TINY])
@slow
def test_run_eval_search(self, model):
input_file_name = Path(self.get_auto_remove_tmp_dir()) / "utest_input.source"
output_file_name = input_file_name.parent / "utest_output.txt"
assert not output_file_name.exists()
text = {
"en": ["Machine learning is great, isn't it?", "I like to eat bananas", "Tomorrow is another great day!"],
"de": [
"Maschinelles Lernen ist großartig, oder?",
"Ich esse gerne Bananen",
"Morgen ist wieder ein toller Tag!",
],
}
tmp_dir = Path(self.get_auto_remove_tmp_dir())
score_path = str(tmp_dir / "scores.json")
reference_path = str(tmp_dir / "val.target")
_dump_articles(input_file_name, text["en"])
_dump_articles(reference_path, text["de"])
task = "translation_en_to_de" if model == T5_TINY else "summarization"
testargs = f"""
run_eval_search.py
{model}
{str(input_file_name)}
{str(output_file_name)}
--score_path {score_path}
--reference_path {reference_path}
--task {task}
""".split()
testargs.extend(["--search", "num_beams=1:2 length_penalty=0.9:1.0"])
with patch.object(sys, "argv", testargs):
with CaptureStdout() as cs:
run_search()
expected_strings = [" num_beams | length_penalty", model, "Best score args"]
un_expected_strings = ["Info"]
if "translation" in task:
expected_strings.append("bleu")
else:
expected_strings.extend(ROUGE_KEYS)
for w in expected_strings:
assert w in cs.out
for w in un_expected_strings:
assert w not in cs.out
assert Path(output_file_name).exists()
os.remove(Path(output_file_name))
| transformers/examples/legacy/seq2seq/old_test_seq2seq_examples.py/0 | {
"file_path": "transformers/examples/legacy/seq2seq/old_test_seq2seq_examples.py",
"repo_id": "transformers",
"token_count": 2127
} | 280 |
{
"en-ru": {
"src": [
"Welsh AMs worried about 'looking like muppets'",
"There is consternation among some AMs at a suggestion their title should change to MWPs (Member of the Welsh Parliament).",
"It has arisen because of plans to change the name of the assembly to the Welsh Parliament.",
"AMs across the political spectrum are worried it could invite ridicule.",
"One Labour AM said his group was concerned \"it rhymes with Twp and Pwp.\"",
"For readers outside of Wales: In Welsh twp means daft and pwp means poo.",
"A Plaid AM said the group as a whole was \"not happy\" and has suggested alternatives.",
"A Welsh Conservative said his group was \"open minded\" about the name change, but noted it was a short verbal hop from MWP to Muppet."
],
"tgt": [
"Члены Национальной ассамблеи Уэльса обеспокоены, что \"выглядят как куклы\"",
"Некоторые члены Национальной ассамблеи Уэльса в ужасе от предложения о том, что их наименование должно измениться на MPW (члены Парламента Уэльса).",
"Этот вопрос был поднят в связи с планами по переименованию ассамблеи в Парламент Уэльса.",
"Члены Национальной ассамблеи Уэльса всего политического спектра обеспокоены, что это может породить насмешки.",
"Один из лейбористских членов Национальной ассамблеи Уэльса сказал, что его партия обеспокоена тем, что \"это рифмуется с Twp и Pwp\".",
"Для читателей за предлами Уэльса: по-валлийски twp означает \"глупый\", а pwp означает \"какашка\".",
"Член Национальной ассамблеи от Плайд сказал, что эта партия в целом \"не счастлива\" и предложил альтернативы.",
"Представитель Консервативной партии Уэльса сказал, что его партия \"открыта\" к переименованию, но отметил, что между WMP и Muppet небольшая разница в произношении."
]
},
"ru-en": {
"src": [
"Названо число готовящихся к отправке в Донбасс новобранцев из Украины",
"Официальный представитель Народной милиции самопровозглашенной Луганской Народной Республики (ЛНР) Андрей Марочко заявил, что зимой 2018-2019 года Украина направит в Донбасс не менее 3 тыс. новобранцев.",
"По его словам, таким образом Киев планирует \"хоть как-то доукомплектовать подразделения\".",
"\"Нежелание граждан Украины проходить службу в рядах ВС Украины, массовые увольнения привели к низкой укомплектованности подразделений\", - рассказал Марочко, которого цитирует \"РИА Новости\".",
"Он также не исключил, что реальные цифры призванных в армию украинцев могут быть увеличены в случае необходимости.",
"В 2014-2017 годах Киев начал так называемую антитеррористическую операцию (АТО), которую позже сменили на операцию объединенных сил (ООС).",
"Предполагалось, что эта мера приведет к усилению роли украинских силовиков в урегулировании ситуации.",
"В конце августа 2018 года ситуация в Донбассе обострилась из-за убийства главы ДНР Александра Захарченко."
],
"tgt": [
"The number of new Ukrainian recruits ready to go to Donbass has become public",
"Official representative of the peoples’ militia of the self-proclaimed Lugansk People’s Republic Andrey Marochko claimed that Ukrainian will send at least 3 thousand new recruits to Donbass in winter 2018-2019.",
"This is how Kyiv tries “at least somehow to staff the units,” he said.",
"“The unwillingness of Ukrainian citizens to serve in the Ukraine’s military forces, mass resignments lead to low understaffing,” said Marochko cited by RIA Novosti.",
"Also, he doesn’t exclude that the real numbers of conscripts in the Ukrainian army can be raised is necessary.",
"In 2014-2017, Kyiv started so-called antiterrorist operation, that ws later changed to the united forces operation.",
"This measure was supposed to strengthen the role of the Ukrainian military in settling the situation.",
"In the late August 2018, the situation in Donbass escalated as the DNR head Aleksandr Zakharchenko was killed."
]
},
"en-de": {
"src": [
"Welsh AMs worried about 'looking like muppets'",
"There is consternation among some AMs at a suggestion their title should change to MWPs (Member of the Welsh Parliament).",
"It has arisen because of plans to change the name of the assembly to the Welsh Parliament.",
"AMs across the political spectrum are worried it could invite ridicule.",
"One Labour AM said his group was concerned \"it rhymes with Twp and Pwp.\"",
"For readers outside of Wales: In Welsh twp means daft and pwp means poo.",
"A Plaid AM said the group as a whole was \"not happy\" and has suggested alternatives.",
"A Welsh Conservative said his group was \"open minded\" about the name change, but noted it was a short verbal hop from MWP to Muppet."
],
"tgt": [
"Walisische Ageordnete sorgen sich \"wie Dödel auszusehen\"",
"Es herrscht Bestürzung unter einigen Mitgliedern der Versammlung über einen Vorschlag, der ihren Titel zu MWPs (Mitglied der walisischen Parlament) ändern soll.",
"Der Grund dafür waren Pläne, den Namen der Nationalversammlung in Walisisches Parlament zu ändern.",
"Mitglieder aller Parteien der Nationalversammlung haben Bedenken, dass sie sich dadurch Spott aussetzen könnten.",
"Ein Labour-Abgeordneter sagte, dass seine Gruppe \"sich mit Twp und Pwp reimt\".",
"Hinweis für den Leser: „twp“ im Walisischen bedeutet „bescheuert“ und „pwp“ bedeutet „Kacke“.",
"Ein Versammlungsmitglied von Plaid Cymru sagte, die Gruppe als Ganzes sei \"nicht glücklich\" und hat Alternativen vorgeschlagen.",
"Ein walisischer Konservativer sagte, seine Gruppe wäre „offen“ für eine Namensänderung, wies aber darauf hin, dass es von „MWP“ (Mitglied des Walisischen Parlaments) nur ein kurzer verbaler Sprung zu „Muppet“ ist."
]
},
"de-en": {
"src": [
"Schöne Münchnerin 2018: Schöne Münchnerin 2018 in Hvar: Neun Dates",
"Von az, aktualisiert am 04.05.2018 um 11:11",
"Ja, sie will...",
"\"Schöne Münchnerin\" 2018 werden!",
"Am Nachmittag wartet erneut eine Überraschung auf unsere Kandidatinnen: sie werden das romantische Candlelight-Shooting vor der MY SOLARIS nicht alleine bestreiten, sondern an der Seite von Male-Model Fabian!",
"Hvar - Flirten, kokettieren, verführen - keine einfachen Aufgaben für unsere Mädchen.",
"Insbesondere dann, wenn in Deutschland ein Freund wartet.",
"Dennoch liefern die neun \"Schöne Münchnerin\"-Kandidatinnen beim Shooting mit People-Fotograf Tuan ab und trotzen Wind, Gischt und Regen wie echte Profis."
],
"tgt": [
"The Beauty of Munich 2018: the Beauty of Munich 2018 in Hvar: Nine dates",
"From A-Z, updated on 04/05/2018 at 11:11",
"Yes, she wants to...",
"to become \"The Beauty of Munich\" in 2018!",
"In the afternoon there is another surprise waiting for our contestants: they will be competing for the romantic candlelight photo shoot at MY SOLARIS not alone, but together with a male-model Fabian!",
"Hvar with its flirting, coquetting, and seduction is not an easy task for our girls.",
"Especially when there is a boyfriend waiting in Germany.",
"Despite dealing with wind, sprays and rain, the nine contestants of \"The Beauty of Munich\" behaved like real professionals at the photo shoot with People-photographer Tuan."
]
}
} | transformers/examples/legacy/seq2seq/test_data/fsmt/fsmt_val_data.json/0 | {
"file_path": "transformers/examples/legacy/seq2seq/test_data/fsmt/fsmt_val_data.json",
"repo_id": "transformers",
"token_count": 4034
} | 281 |
## The relevant files are currently on a shared Google
## drive at https://drive.google.com/drive/folders/1kC0I2UGl2ltrluI9NqDjaQJGw5iliw_J
## Monitor for changes and eventually migrate to use the `datasets` library
curl -L 'https://drive.google.com/uc?export=download&id=1Jjhbal535VVz2ap4v4r_rN1UEHTdLK5P' \
| grep -v "^#" | cut -f 2,3 | tr '\t' ' ' > train.txt.tmp
curl -L 'https://drive.google.com/uc?export=download&id=1ZfRcQThdtAR5PPRjIDtrVP7BtXSCUBbm' \
| grep -v "^#" | cut -f 2,3 | tr '\t' ' ' > dev.txt.tmp
curl -L 'https://drive.google.com/uc?export=download&id=1u9mb7kNJHWQCWyweMDRMuTFoOHOfeBTH' \
| grep -v "^#" | cut -f 2,3 | tr '\t' ' ' > test.txt.tmp
export MAX_LENGTH=128
export BERT_MODEL=bert-base-multilingual-cased
python3 scripts/preprocess.py train.txt.tmp $BERT_MODEL $MAX_LENGTH > train.txt
python3 scripts/preprocess.py dev.txt.tmp $BERT_MODEL $MAX_LENGTH > dev.txt
python3 scripts/preprocess.py test.txt.tmp $BERT_MODEL $MAX_LENGTH > test.txt
cat train.txt dev.txt test.txt | cut -d " " -f 2 | grep -v "^$"| sort | uniq > labels.txt
export OUTPUT_DIR=germeval-model
export BATCH_SIZE=32
export NUM_EPOCHS=3
export SAVE_STEPS=750
export SEED=1
python3 run_ner.py \
--task_type NER \
--data_dir . \
--labels ./labels.txt \
--model_name_or_path $BERT_MODEL \
--output_dir $OUTPUT_DIR \
--max_seq_length $MAX_LENGTH \
--num_train_epochs $NUM_EPOCHS \
--per_gpu_train_batch_size $BATCH_SIZE \
--save_steps $SAVE_STEPS \
--seed $SEED \
--do_train \
--do_eval \
--do_predict
| transformers/examples/legacy/token-classification/run.sh/0 | {
"file_path": "transformers/examples/legacy/token-classification/run.sh",
"repo_id": "transformers",
"token_count": 648
} | 282 |
<!---
Copyright 2021 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
# Image classification examples
This directory contains 2 scripts that showcase how to fine-tune any model supported by the [`AutoModelForImageClassification` API](https://huggingface.co/docs/transformers/main/en/model_doc/auto#transformers.AutoModelForImageClassification) (such as [ViT](https://huggingface.co/docs/transformers/main/en/model_doc/vit), [ConvNeXT](https://huggingface.co/docs/transformers/main/en/model_doc/convnext), [ResNet](https://huggingface.co/docs/transformers/main/en/model_doc/resnet), [Swin Transformer](https://huggingface.co/docs/transformers/main/en/model_doc/swin)...) using PyTorch. They can be used to fine-tune models on both [datasets from the hub](#using-datasets-from-hub) as well as on [your own custom data](#using-your-own-data).
<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/image_classification_inference_widget.png" height="400" />
Try out the inference widget here: https://huggingface.co/google/vit-base-patch16-224
Content:
- [PyTorch version, Trainer](#pytorch-version-trainer)
- [PyTorch version, no Trainer](#pytorch-version-no-trainer)
## PyTorch version, Trainer
Based on the script [`run_image_classification.py`](https://github.com/huggingface/transformers/blob/main/examples/pytorch/image-classification/run_image_classification.py).
The script leverages the 🤗 [Trainer API](https://huggingface.co/docs/transformers/main_classes/trainer) to automatically take care of the training for you, running on distributed environments right away.
### Using datasets from Hub
Here we show how to fine-tune a Vision Transformer (`ViT`) on the [beans](https://huggingface.co/datasets/beans) dataset, to classify the disease type of bean leaves.
```bash
python run_image_classification.py \
--dataset_name beans \
--output_dir ./beans_outputs/ \
--remove_unused_columns False \
--label_column_name labels \
--do_train \
--do_eval \
--push_to_hub \
--push_to_hub_model_id vit-base-beans \
--learning_rate 2e-5 \
--num_train_epochs 5 \
--per_device_train_batch_size 8 \
--per_device_eval_batch_size 8 \
--logging_strategy steps \
--logging_steps 10 \
--evaluation_strategy epoch \
--save_strategy epoch \
--load_best_model_at_end True \
--save_total_limit 3 \
--seed 1337
```
👀 See the results here: [nateraw/vit-base-beans](https://huggingface.co/nateraw/vit-base-beans).
Note that you can replace the model and dataset by simply setting the `model_name_or_path` and `dataset_name` arguments respectively, with any model or dataset from the [hub](https://huggingface.co/). For an overview of all possible arguments, we refer to the [docs](https://huggingface.co/docs/transformers/main_classes/trainer#transformers.TrainingArguments) of the `TrainingArguments`, which can be passed as flags.
> If your model classification head dimensions do not fit the number of labels in the dataset, you can specify `--ignore_mismatched_sizes` to adapt it.
### Using your own data
To use your own dataset, there are 2 ways:
- you can either provide your own folders as `--train_dir` and/or `--validation_dir` arguments
- you can upload your dataset to the hub (possibly as a private repo, if you prefer so), and simply pass the `--dataset_name` argument.
Below, we explain both in more detail.
#### Provide them as folders
If you provide your own folders with images, the script expects the following directory structure:
```bash
root/dog/xxx.png
root/dog/xxy.png
root/dog/[...]/xxz.png
root/cat/123.png
root/cat/nsdf3.png
root/cat/[...]/asd932_.png
```
In other words, you need to organize your images in subfolders, based on their class. You can then run the script like this:
```bash
python run_image_classification.py \
--train_dir <path-to-train-root> \
--output_dir ./outputs/ \
--remove_unused_columns False \
--do_train \
--do_eval
```
Internally, the script will use the [`ImageFolder`](https://huggingface.co/docs/datasets/v2.0.0/en/image_process#imagefolder) feature which will automatically turn the folders into 🤗 Dataset objects.
##### 💡 The above will split the train dir into training and evaluation sets
- To control the split amount, use the `--train_val_split` flag.
- To provide your own validation split in its own directory, you can pass the `--validation_dir <path-to-val-root>` flag.
#### Upload your data to the hub, as a (possibly private) repo
It's very easy (and convenient) to upload your image dataset to the hub using the [`ImageFolder`](https://huggingface.co/docs/datasets/v2.0.0/en/image_process#imagefolder) feature available in 🤗 Datasets. Simply do the following:
```python
from datasets import load_dataset
# example 1: local folder
dataset = load_dataset("imagefolder", data_dir="path_to_your_folder")
# example 2: local files (supported formats are tar, gzip, zip, xz, rar, zstd)
dataset = load_dataset("imagefolder", data_files="path_to_zip_file")
# example 3: remote files (supported formats are tar, gzip, zip, xz, rar, zstd)
dataset = load_dataset("imagefolder", data_files="https://download.microsoft.com/download/3/E/1/3E1C3F21-ECDB-4869-8368-6DEBA77B919F/kagglecatsanddogs_3367a.zip")
# example 4: providing several splits
dataset = load_dataset("imagefolder", data_files={"train": ["path/to/file1", "path/to/file2"], "test": ["path/to/file3", "path/to/file4"]})
```
`ImageFolder` will create a `label` column, and the label name is based on the directory name.
Next, push it to the hub!
```python
# assuming you have ran the huggingface-cli login command in a terminal
dataset.push_to_hub("name_of_your_dataset")
# if you want to push to a private repo, simply pass private=True:
dataset.push_to_hub("name_of_your_dataset", private=True)
```
and that's it! You can now train your model by simply setting the `--dataset_name` argument to the name of your dataset on the hub (as explained in [Using datasets from the 🤗 hub](#using-datasets-from-hub)).
More on this can also be found in [this blog post](https://huggingface.co/blog/image-search-datasets).
### Sharing your model on 🤗 Hub
0. If you haven't already, [sign up](https://huggingface.co/join) for a 🤗 account
1. Make sure you have `git-lfs` installed and git set up.
```bash
$ apt install git-lfs
$ git config --global user.email "[email protected]"
$ git config --global user.name "Your Name"
```
2. Log in with your HuggingFace account credentials using `huggingface-cli`:
```bash
$ huggingface-cli login
# ...follow the prompts
```
3. When running the script, pass the following arguments:
```bash
python run_image_classification.py \
--push_to_hub \
--push_to_hub_model_id <name-your-model> \
...
```
## PyTorch version, no Trainer
Based on the script [`run_image_classification_no_trainer.py`](https://github.com/huggingface/transformers/blob/main/examples/pytorch/image-classification/run_image_classification_no_trainer.py).
Like `run_image_classification.py`, this script allows you to fine-tune any of the models on the [hub](https://huggingface.co/models) on an image classification task. The main difference is that this script exposes the bare training loop, to allow you to quickly experiment and add any customization you would like.
It offers less options than the script with `Trainer` (for instance you can easily change the options for the optimizer
or the dataloaders directly in the script) but still run in a distributed setup, and supports mixed precision by
the means of the [🤗 `Accelerate`](https://github.com/huggingface/accelerate) library. You can use the script normally
after installing it:
```bash
pip install git+https://github.com/huggingface/accelerate
```
You can then use your usual launchers to run in it in a distributed environment, but the easiest way is to run
```bash
accelerate config
```
and reply to the questions asked. Then
```bash
accelerate test
```
that will check everything is ready for training. Finally, you can launch training with
```bash
accelerate launch run_image_classification_no_trainer.py --image_column_name img
```
This command is the same and will work for:
- single/multiple CPUs
- single/multiple GPUs
- TPUs
Note that this library is in alpha release so your feedback is more than welcome if you encounter any problem using it.
Regarding using custom data with this script, we refer to [using your own data](#using-your-own-data).
| transformers/examples/pytorch/image-classification/README.md/0 | {
"file_path": "transformers/examples/pytorch/image-classification/README.md",
"repo_id": "transformers",
"token_count": 2874
} | 283 |
# coding=utf-8
# Copyright 2021 The HuggingFace Team All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
A subclass of `Trainer` specific to Question-Answering tasks
"""
import math
import time
from typing import Dict, List, Optional
from torch.utils.data import Dataset
from transformers import Seq2SeqTrainer, is_torch_xla_available
from transformers.trainer_utils import PredictionOutput, speed_metrics
if is_torch_xla_available():
import torch_xla.core.xla_model as xm
import torch_xla.debug.metrics as met
class QuestionAnsweringSeq2SeqTrainer(Seq2SeqTrainer):
def __init__(self, *args, eval_examples=None, post_process_function=None, **kwargs):
super().__init__(*args, **kwargs)
self.eval_examples = eval_examples
self.post_process_function = post_process_function
# def evaluate(self, eval_dataset=None, eval_examples=None, ignore_keys=None, metric_key_prefix: str = "eval"):
def evaluate(
self,
eval_dataset: Optional[Dataset] = None,
eval_examples=None,
ignore_keys: Optional[List[str]] = None,
metric_key_prefix: str = "eval",
**gen_kwargs,
) -> Dict[str, float]:
gen_kwargs = gen_kwargs.copy()
# Use legacy argument setting if a) the option is not explicitly passed; and b) the argument is set in the
# training args
if gen_kwargs.get("max_length") is None and self.args.generation_max_length is not None:
gen_kwargs["max_length"] = self.args.generation_max_length
if gen_kwargs.get("num_beams") is None and self.args.generation_num_beams is not None:
gen_kwargs["num_beams"] = self.args.generation_num_beams
self._gen_kwargs = gen_kwargs
eval_dataset = self.eval_dataset if eval_dataset is None else eval_dataset
eval_dataloader = self.get_eval_dataloader(eval_dataset)
eval_examples = self.eval_examples if eval_examples is None else eval_examples
# Temporarily disable metric computation, we will do it in the loop here.
compute_metrics = self.compute_metrics
self.compute_metrics = None
start_time = time.time()
eval_loop = self.prediction_loop if self.args.use_legacy_prediction_loop else self.evaluation_loop
try:
output = eval_loop(
eval_dataloader,
description="Evaluation",
# No point gathering the predictions if there are no metrics, otherwise we defer to
# self.args.prediction_loss_only
prediction_loss_only=True if compute_metrics is None else None,
ignore_keys=ignore_keys,
metric_key_prefix=metric_key_prefix,
)
finally:
self.compute_metrics = compute_metrics
total_batch_size = self.args.eval_batch_size * self.args.world_size
if f"{metric_key_prefix}_jit_compilation_time" in output.metrics:
start_time += output.metrics[f"{metric_key_prefix}_jit_compilation_time"]
output.metrics.update(
speed_metrics(
metric_key_prefix,
start_time,
num_samples=output.num_samples,
num_steps=math.ceil(output.num_samples / total_batch_size),
)
)
if self.post_process_function is not None and self.compute_metrics is not None and self.args.should_save:
# Only the main node write the results by default
eval_preds = self.post_process_function(eval_examples, eval_dataset, output)
metrics = self.compute_metrics(eval_preds)
# Prefix all keys with metric_key_prefix + '_'
for key in list(metrics.keys()):
if not key.startswith(f"{metric_key_prefix}_"):
metrics[f"{metric_key_prefix}_{key}"] = metrics.pop(key)
metrics.update(output.metrics)
else:
metrics = output.metrics
if self.args.should_log:
# Only the main node log the results by default
self.log(metrics)
if self.args.tpu_metrics_debug or self.args.debug:
# tpu-comment: Logging debug metrics for PyTorch/XLA (compile, execute times, ops, etc.)
xm.master_print(met.metrics_report())
self.control = self.callback_handler.on_evaluate(self.args, self.state, self.control, metrics)
return metrics
def predict(
self, predict_dataset, predict_examples, ignore_keys=None, metric_key_prefix: str = "test", **gen_kwargs
):
self._gen_kwargs = gen_kwargs.copy()
predict_dataloader = self.get_test_dataloader(predict_dataset)
# Temporarily disable metric computation, we will do it in the loop here.
compute_metrics = self.compute_metrics
self.compute_metrics = None
start_time = time.time()
eval_loop = self.prediction_loop if self.args.use_legacy_prediction_loop else self.evaluation_loop
try:
output = eval_loop(
predict_dataloader,
description="Prediction",
# No point gathering the predictions if there are no metrics, otherwise we defer to
# self.args.prediction_loss_only
prediction_loss_only=True if compute_metrics is None else None,
ignore_keys=ignore_keys,
metric_key_prefix=metric_key_prefix,
)
finally:
self.compute_metrics = compute_metrics
total_batch_size = self.args.eval_batch_size * self.args.world_size
if f"{metric_key_prefix}_jit_compilation_time" in output.metrics:
start_time += output.metrics[f"{metric_key_prefix}_jit_compilation_time"]
output.metrics.update(
speed_metrics(
metric_key_prefix,
start_time,
num_samples=output.num_samples,
num_steps=math.ceil(output.num_samples / total_batch_size),
)
)
if self.post_process_function is None or self.compute_metrics is None:
return output
predictions = self.post_process_function(predict_examples, predict_dataset, output, "predict")
metrics = self.compute_metrics(predictions)
# Prefix all keys with metric_key_prefix + '_'
for key in list(metrics.keys()):
if not key.startswith(f"{metric_key_prefix}_"):
metrics[f"{metric_key_prefix}_{key}"] = metrics.pop(key)
metrics.update(output.metrics)
return PredictionOutput(predictions=predictions.predictions, label_ids=predictions.label_ids, metrics=metrics)
| transformers/examples/pytorch/question-answering/trainer_seq2seq_qa.py/0 | {
"file_path": "transformers/examples/pytorch/question-answering/trainer_seq2seq_qa.py",
"repo_id": "transformers",
"token_count": 3070
} | 284 |
#!/usr/bin/env python
# coding=utf-8
# Copyright 2021 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
Fine-tuning the library models for sequence to sequence.
"""
# You can also adapt this script on your own sequence to sequence task. Pointers for this are left as comments.
import logging
import os
import sys
import warnings
from dataclasses import dataclass, field
from typing import Optional
import datasets
import evaluate
import nltk # Here to have a nice missing dependency error message early on
import numpy as np
from datasets import load_dataset
from filelock import FileLock
import transformers
from transformers import (
AutoConfig,
AutoModelForSeq2SeqLM,
AutoTokenizer,
DataCollatorForSeq2Seq,
HfArgumentParser,
MBart50Tokenizer,
MBart50TokenizerFast,
MBartTokenizer,
MBartTokenizerFast,
Seq2SeqTrainer,
Seq2SeqTrainingArguments,
set_seed,
)
from transformers.trainer_utils import get_last_checkpoint
from transformers.utils import check_min_version, is_offline_mode, send_example_telemetry
from transformers.utils.versions import require_version
# Will error if the minimal version of Transformers is not installed. Remove at your own risks.
check_min_version("4.40.0.dev0")
require_version("datasets>=1.8.0", "To fix: pip install -r examples/pytorch/summarization/requirements.txt")
logger = logging.getLogger(__name__)
try:
nltk.data.find("tokenizers/punkt")
except (LookupError, OSError):
if is_offline_mode():
raise LookupError(
"Offline mode: run this script without TRANSFORMERS_OFFLINE first to download nltk data files"
)
with FileLock(".lock") as lock:
nltk.download("punkt", quiet=True)
# A list of all multilingual tokenizer which require lang attribute.
MULTILINGUAL_TOKENIZERS = [MBartTokenizer, MBartTokenizerFast, MBart50Tokenizer, MBart50TokenizerFast]
@dataclass
class ModelArguments:
"""
Arguments pertaining to which model/config/tokenizer we are going to fine-tune from.
"""
model_name_or_path: str = field(
metadata={"help": "Path to pretrained model or model identifier from huggingface.co/models"}
)
config_name: Optional[str] = field(
default=None, metadata={"help": "Pretrained config name or path if not the same as model_name"}
)
tokenizer_name: Optional[str] = field(
default=None, metadata={"help": "Pretrained tokenizer name or path if not the same as model_name"}
)
cache_dir: Optional[str] = field(
default=None,
metadata={"help": "Where to store the pretrained models downloaded from huggingface.co"},
)
use_fast_tokenizer: bool = field(
default=True,
metadata={"help": "Whether to use one of the fast tokenizer (backed by the tokenizers library) or not."},
)
model_revision: str = field(
default="main",
metadata={"help": "The specific model version to use (can be a branch name, tag name or commit id)."},
)
token: str = field(
default=None,
metadata={
"help": (
"The token to use as HTTP bearer authorization for remote files. If not specified, will use the token "
"generated when running `huggingface-cli login` (stored in `~/.huggingface`)."
)
},
)
use_auth_token: bool = field(
default=None,
metadata={
"help": "The `use_auth_token` argument is deprecated and will be removed in v4.34. Please use `token` instead."
},
)
trust_remote_code: bool = field(
default=False,
metadata={
"help": (
"Whether or not to allow for custom models defined on the Hub in their own modeling files. This option "
"should only be set to `True` for repositories you trust and in which you have read the code, as it will "
"execute code present on the Hub on your local machine."
)
},
)
resize_position_embeddings: Optional[bool] = field(
default=None,
metadata={
"help": (
"Whether to automatically resize the position embeddings if `max_source_length` exceeds "
"the model's position embeddings."
)
},
)
@dataclass
class DataTrainingArguments:
"""
Arguments pertaining to what data we are going to input our model for training and eval.
"""
lang: Optional[str] = field(default=None, metadata={"help": "Language id for summarization."})
dataset_name: Optional[str] = field(
default=None, metadata={"help": "The name of the dataset to use (via the datasets library)."}
)
dataset_config_name: Optional[str] = field(
default=None, metadata={"help": "The configuration name of the dataset to use (via the datasets library)."}
)
text_column: Optional[str] = field(
default=None,
metadata={"help": "The name of the column in the datasets containing the full texts (for summarization)."},
)
summary_column: Optional[str] = field(
default=None,
metadata={"help": "The name of the column in the datasets containing the summaries (for summarization)."},
)
train_file: Optional[str] = field(
default=None, metadata={"help": "The input training data file (a jsonlines or csv file)."}
)
validation_file: Optional[str] = field(
default=None,
metadata={
"help": (
"An optional input evaluation data file to evaluate the metrics (rouge) on (a jsonlines or csv file)."
)
},
)
test_file: Optional[str] = field(
default=None,
metadata={
"help": "An optional input test data file to evaluate the metrics (rouge) on (a jsonlines or csv file)."
},
)
overwrite_cache: bool = field(
default=False, metadata={"help": "Overwrite the cached training and evaluation sets"}
)
preprocessing_num_workers: Optional[int] = field(
default=None,
metadata={"help": "The number of processes to use for the preprocessing."},
)
max_source_length: Optional[int] = field(
default=1024,
metadata={
"help": (
"The maximum total input sequence length after tokenization. Sequences longer "
"than this will be truncated, sequences shorter will be padded."
)
},
)
max_target_length: Optional[int] = field(
default=128,
metadata={
"help": (
"The maximum total sequence length for target text after tokenization. Sequences longer "
"than this will be truncated, sequences shorter will be padded."
)
},
)
val_max_target_length: Optional[int] = field(
default=None,
metadata={
"help": (
"The maximum total sequence length for validation target text after tokenization. Sequences longer "
"than this will be truncated, sequences shorter will be padded. Will default to `max_target_length`. "
"This argument is also used to override the ``max_length`` param of ``model.generate``, which is used "
"during ``evaluate`` and ``predict``."
)
},
)
pad_to_max_length: bool = field(
default=False,
metadata={
"help": (
"Whether to pad all samples to model maximum sentence length. "
"If False, will pad the samples dynamically when batching to the maximum length in the batch. More "
"efficient on GPU but very bad for TPU."
)
},
)
max_train_samples: Optional[int] = field(
default=None,
metadata={
"help": (
"For debugging purposes or quicker training, truncate the number of training examples to this "
"value if set."
)
},
)
max_eval_samples: Optional[int] = field(
default=None,
metadata={
"help": (
"For debugging purposes or quicker training, truncate the number of evaluation examples to this "
"value if set."
)
},
)
max_predict_samples: Optional[int] = field(
default=None,
metadata={
"help": (
"For debugging purposes or quicker training, truncate the number of prediction examples to this "
"value if set."
)
},
)
num_beams: Optional[int] = field(
default=1,
metadata={
"help": (
"Number of beams to use for evaluation. This argument will be passed to ``model.generate``, "
"which is used during ``evaluate`` and ``predict``."
)
},
)
ignore_pad_token_for_loss: bool = field(
default=True,
metadata={
"help": "Whether to ignore the tokens corresponding to padded labels in the loss computation or not."
},
)
source_prefix: Optional[str] = field(
default=None, metadata={"help": "A prefix to add before every source text (useful for T5 models)."}
)
forced_bos_token: Optional[str] = field(
default=None,
metadata={
"help": (
"The token to force as the first generated token after the decoder_start_token_id. "
"Useful for multilingual models like mBART where the first generated token"
"needs to be the target language token (Usually it is the target language token)"
)
},
)
def __post_init__(self):
if (
self.dataset_name is None
and self.train_file is None
and self.validation_file is None
and self.test_file is None
):
raise ValueError("Need either a dataset name or a training, validation, or test file.")
else:
if self.train_file is not None:
extension = self.train_file.split(".")[-1]
assert extension in ["csv", "json"], "`train_file` should be a csv or a json file."
if self.validation_file is not None:
extension = self.validation_file.split(".")[-1]
assert extension in ["csv", "json"], "`validation_file` should be a csv or a json file."
if self.test_file is not None:
extension = self.test_file.split(".")[-1]
assert extension in ["csv", "json"], "`test_file` should be a csv or a json file."
if self.val_max_target_length is None:
self.val_max_target_length = self.max_target_length
summarization_name_mapping = {
"amazon_reviews_multi": ("review_body", "review_title"),
"big_patent": ("description", "abstract"),
"cnn_dailymail": ("article", "highlights"),
"orange_sum": ("text", "summary"),
"pn_summary": ("article", "summary"),
"psc": ("extract_text", "summary_text"),
"samsum": ("dialogue", "summary"),
"thaisum": ("body", "summary"),
"xglue": ("news_body", "news_title"),
"xsum": ("document", "summary"),
"wiki_summary": ("article", "highlights"),
"multi_news": ("document", "summary"),
}
def main():
# See all possible arguments in src/transformers/training_args.py
# or by passing the --help flag to this script.
# We now keep distinct sets of args, for a cleaner separation of concerns.
parser = HfArgumentParser((ModelArguments, DataTrainingArguments, Seq2SeqTrainingArguments))
if len(sys.argv) == 2 and sys.argv[1].endswith(".json"):
# If we pass only one argument to the script and it's the path to a json file,
# let's parse it to get our arguments.
model_args, data_args, training_args = parser.parse_json_file(json_file=os.path.abspath(sys.argv[1]))
else:
model_args, data_args, training_args = parser.parse_args_into_dataclasses()
if model_args.use_auth_token is not None:
warnings.warn(
"The `use_auth_token` argument is deprecated and will be removed in v4.34. Please use `token` instead.",
FutureWarning,
)
if model_args.token is not None:
raise ValueError("`token` and `use_auth_token` are both specified. Please set only the argument `token`.")
model_args.token = model_args.use_auth_token
# Sending telemetry. Tracking the example usage helps us better allocate resources to maintain them. The
# information sent is the one passed as arguments along with your Python/PyTorch versions.
send_example_telemetry("run_summarization", model_args, data_args)
# Setup logging
logging.basicConfig(
format="%(asctime)s - %(levelname)s - %(name)s - %(message)s",
datefmt="%m/%d/%Y %H:%M:%S",
handlers=[logging.StreamHandler(sys.stdout)],
)
if training_args.should_log:
# The default of training_args.log_level is passive, so we set log level at info here to have that default.
transformers.utils.logging.set_verbosity_info()
log_level = training_args.get_process_log_level()
logger.setLevel(log_level)
datasets.utils.logging.set_verbosity(log_level)
transformers.utils.logging.set_verbosity(log_level)
transformers.utils.logging.enable_default_handler()
transformers.utils.logging.enable_explicit_format()
# Log on each process the small summary:
logger.warning(
f"Process rank: {training_args.local_rank}, device: {training_args.device}, n_gpu: {training_args.n_gpu}, "
+ f"distributed training: {training_args.parallel_mode.value == 'distributed'}, 16-bits training: {training_args.fp16}"
)
logger.info(f"Training/evaluation parameters {training_args}")
if data_args.source_prefix is None and model_args.model_name_or_path in [
"google-t5/t5-small",
"google-t5/t5-base",
"google-t5/t5-large",
"google-t5/t5-3b",
"google-t5/t5-11b",
]:
logger.warning(
"You're running a t5 model but didn't provide a source prefix, which is the expected, e.g. with "
"`--source_prefix 'summarize: ' `"
)
# Detecting last checkpoint.
last_checkpoint = None
if os.path.isdir(training_args.output_dir) and training_args.do_train and not training_args.overwrite_output_dir:
last_checkpoint = get_last_checkpoint(training_args.output_dir)
if last_checkpoint is None and len(os.listdir(training_args.output_dir)) > 0:
raise ValueError(
f"Output directory ({training_args.output_dir}) already exists and is not empty. "
"Use --overwrite_output_dir to overcome."
)
elif last_checkpoint is not None and training_args.resume_from_checkpoint is None:
logger.info(
f"Checkpoint detected, resuming training at {last_checkpoint}. To avoid this behavior, change "
"the `--output_dir` or add `--overwrite_output_dir` to train from scratch."
)
# Set seed before initializing model.
set_seed(training_args.seed)
# Get the datasets: you can either provide your own CSV/JSON training and evaluation files (see below)
# or just provide the name of one of the public datasets available on the hub at https://huggingface.co/datasets/
# (the dataset will be downloaded automatically from the datasets Hub).
#
# For CSV/JSON files this script will use the first column for the full texts and the second column for the
# summaries (unless you specify column names for this with the `text_column` and `summary_column` arguments).
#
# In distributed training, the load_dataset function guarantee that only one local process can concurrently
# download the dataset.
if data_args.dataset_name is not None:
# Downloading and loading a dataset from the hub.
raw_datasets = load_dataset(
data_args.dataset_name,
data_args.dataset_config_name,
cache_dir=model_args.cache_dir,
token=model_args.token,
)
else:
data_files = {}
if data_args.train_file is not None:
data_files["train"] = data_args.train_file
extension = data_args.train_file.split(".")[-1]
if data_args.validation_file is not None:
data_files["validation"] = data_args.validation_file
extension = data_args.validation_file.split(".")[-1]
if data_args.test_file is not None:
data_files["test"] = data_args.test_file
extension = data_args.test_file.split(".")[-1]
raw_datasets = load_dataset(
extension,
data_files=data_files,
cache_dir=model_args.cache_dir,
token=model_args.token,
)
# See more about loading any type of standard or custom dataset (from files, python dict, pandas DataFrame, etc) at
# https://huggingface.co/docs/datasets/loading_datasets.
# Load pretrained model and tokenizer
#
# Distributed training:
# The .from_pretrained methods guarantee that only one local process can concurrently
# download model & vocab.
config = AutoConfig.from_pretrained(
model_args.config_name if model_args.config_name else model_args.model_name_or_path,
cache_dir=model_args.cache_dir,
revision=model_args.model_revision,
token=model_args.token,
trust_remote_code=model_args.trust_remote_code,
)
tokenizer = AutoTokenizer.from_pretrained(
model_args.tokenizer_name if model_args.tokenizer_name else model_args.model_name_or_path,
cache_dir=model_args.cache_dir,
use_fast=model_args.use_fast_tokenizer,
revision=model_args.model_revision,
token=model_args.token,
trust_remote_code=model_args.trust_remote_code,
)
model = AutoModelForSeq2SeqLM.from_pretrained(
model_args.model_name_or_path,
from_tf=bool(".ckpt" in model_args.model_name_or_path),
config=config,
cache_dir=model_args.cache_dir,
revision=model_args.model_revision,
token=model_args.token,
trust_remote_code=model_args.trust_remote_code,
)
# We resize the embeddings only when necessary to avoid index errors. If you are creating a model from scratch
# on a small vocab and want a smaller embedding size, remove this test.
embedding_size = model.get_input_embeddings().weight.shape[0]
if len(tokenizer) > embedding_size:
model.resize_token_embeddings(len(tokenizer))
if model.config.decoder_start_token_id is None and isinstance(tokenizer, (MBartTokenizer, MBartTokenizerFast)):
if isinstance(tokenizer, MBartTokenizer):
model.config.decoder_start_token_id = tokenizer.lang_code_to_id[data_args.lang]
else:
model.config.decoder_start_token_id = tokenizer.convert_tokens_to_ids(data_args.lang)
if model.config.decoder_start_token_id is None:
raise ValueError("Make sure that `config.decoder_start_token_id` is correctly defined")
if (
hasattr(model.config, "max_position_embeddings")
and model.config.max_position_embeddings < data_args.max_source_length
):
if model_args.resize_position_embeddings is None:
logger.warning(
"Increasing the model's number of position embedding vectors from"
f" {model.config.max_position_embeddings} to {data_args.max_source_length}."
)
model.resize_position_embeddings(data_args.max_source_length)
elif model_args.resize_position_embeddings:
model.resize_position_embeddings(data_args.max_source_length)
else:
raise ValueError(
f"`--max_source_length` is set to {data_args.max_source_length}, but the model only has"
f" {model.config.max_position_embeddings} position encodings. Consider either reducing"
f" `--max_source_length` to {model.config.max_position_embeddings} or to automatically resize the"
" model's position encodings by passing `--resize_position_embeddings`."
)
prefix = data_args.source_prefix if data_args.source_prefix is not None else ""
# Preprocessing the datasets.
# We need to tokenize inputs and targets.
if training_args.do_train:
if "train" not in raw_datasets:
raise ValueError("--do_train requires a train dataset")
column_names = raw_datasets["train"].column_names
elif training_args.do_eval:
if "validation" not in raw_datasets:
raise ValueError("--do_eval requires a validation dataset")
column_names = raw_datasets["validation"].column_names
elif training_args.do_predict:
if "test" not in raw_datasets:
raise ValueError("--do_predict requires a test dataset")
column_names = raw_datasets["test"].column_names
else:
logger.info("There is nothing to do. Please pass `do_train`, `do_eval` and/or `do_predict`.")
return
if isinstance(tokenizer, tuple(MULTILINGUAL_TOKENIZERS)):
assert (
data_args.lang is not None
), f"{tokenizer.__class__.__name__} is a multilingual tokenizer which requires --lang argument"
tokenizer.src_lang = data_args.lang
tokenizer.tgt_lang = data_args.lang
# For multilingual translation models like mBART-50 and M2M100 we need to force the target language token
# as the first generated token. We ask the user to explicitly provide this as --forced_bos_token argument.
forced_bos_token_id = (
tokenizer.lang_code_to_id[data_args.forced_bos_token] if data_args.forced_bos_token is not None else None
)
model.config.forced_bos_token_id = forced_bos_token_id
# Get the column names for input/target.
dataset_columns = summarization_name_mapping.get(data_args.dataset_name, None)
if data_args.text_column is None:
text_column = dataset_columns[0] if dataset_columns is not None else column_names[0]
else:
text_column = data_args.text_column
if text_column not in column_names:
raise ValueError(
f"--text_column' value '{data_args.text_column}' needs to be one of: {', '.join(column_names)}"
)
if data_args.summary_column is None:
summary_column = dataset_columns[1] if dataset_columns is not None else column_names[1]
else:
summary_column = data_args.summary_column
if summary_column not in column_names:
raise ValueError(
f"--summary_column' value '{data_args.summary_column}' needs to be one of: {', '.join(column_names)}"
)
# Temporarily set max_target_length for training.
max_target_length = data_args.max_target_length
padding = "max_length" if data_args.pad_to_max_length else False
if training_args.label_smoothing_factor > 0 and not hasattr(model, "prepare_decoder_input_ids_from_labels"):
logger.warning(
"label_smoothing is enabled but the `prepare_decoder_input_ids_from_labels` method is not defined for "
f"`{model.__class__.__name__}`. This will lead to loss being calculated twice and will take up more memory"
)
def preprocess_function(examples):
# remove pairs where at least one record is None
inputs, targets = [], []
for i in range(len(examples[text_column])):
if examples[text_column][i] and examples[summary_column][i]:
inputs.append(examples[text_column][i])
targets.append(examples[summary_column][i])
inputs = [prefix + inp for inp in inputs]
model_inputs = tokenizer(inputs, max_length=data_args.max_source_length, padding=padding, truncation=True)
# Tokenize targets with the `text_target` keyword argument
labels = tokenizer(text_target=targets, max_length=max_target_length, padding=padding, truncation=True)
# If we are padding here, replace all tokenizer.pad_token_id in the labels by -100 when we want to ignore
# padding in the loss.
if padding == "max_length" and data_args.ignore_pad_token_for_loss:
labels["input_ids"] = [
[(l if l != tokenizer.pad_token_id else -100) for l in label] for label in labels["input_ids"]
]
model_inputs["labels"] = labels["input_ids"]
return model_inputs
if training_args.do_train:
train_dataset = raw_datasets["train"]
if data_args.max_train_samples is not None:
max_train_samples = min(len(train_dataset), data_args.max_train_samples)
train_dataset = train_dataset.select(range(max_train_samples))
with training_args.main_process_first(desc="train dataset map pre-processing"):
train_dataset = train_dataset.map(
preprocess_function,
batched=True,
num_proc=data_args.preprocessing_num_workers,
remove_columns=column_names,
load_from_cache_file=not data_args.overwrite_cache,
desc="Running tokenizer on train dataset",
)
if training_args.do_eval:
max_target_length = data_args.val_max_target_length
eval_dataset = raw_datasets["validation"]
if data_args.max_eval_samples is not None:
max_eval_samples = min(len(eval_dataset), data_args.max_eval_samples)
eval_dataset = eval_dataset.select(range(max_eval_samples))
with training_args.main_process_first(desc="validation dataset map pre-processing"):
eval_dataset = eval_dataset.map(
preprocess_function,
batched=True,
num_proc=data_args.preprocessing_num_workers,
remove_columns=column_names,
load_from_cache_file=not data_args.overwrite_cache,
desc="Running tokenizer on validation dataset",
)
if training_args.do_predict:
max_target_length = data_args.val_max_target_length
predict_dataset = raw_datasets["test"]
if data_args.max_predict_samples is not None:
max_predict_samples = min(len(predict_dataset), data_args.max_predict_samples)
predict_dataset = predict_dataset.select(range(max_predict_samples))
with training_args.main_process_first(desc="prediction dataset map pre-processing"):
predict_dataset = predict_dataset.map(
preprocess_function,
batched=True,
num_proc=data_args.preprocessing_num_workers,
remove_columns=column_names,
load_from_cache_file=not data_args.overwrite_cache,
desc="Running tokenizer on prediction dataset",
)
# Data collator
label_pad_token_id = -100 if data_args.ignore_pad_token_for_loss else tokenizer.pad_token_id
data_collator = DataCollatorForSeq2Seq(
tokenizer,
model=model,
label_pad_token_id=label_pad_token_id,
pad_to_multiple_of=8 if training_args.fp16 else None,
)
# Metric
metric = evaluate.load("rouge", cache_dir=model_args.cache_dir)
def postprocess_text(preds, labels):
preds = [pred.strip() for pred in preds]
labels = [label.strip() for label in labels]
# rougeLSum expects newline after each sentence
preds = ["\n".join(nltk.sent_tokenize(pred)) for pred in preds]
labels = ["\n".join(nltk.sent_tokenize(label)) for label in labels]
return preds, labels
def compute_metrics(eval_preds):
preds, labels = eval_preds
if isinstance(preds, tuple):
preds = preds[0]
# Replace -100s used for padding as we can't decode them
preds = np.where(preds != -100, preds, tokenizer.pad_token_id)
decoded_preds = tokenizer.batch_decode(preds, skip_special_tokens=True)
labels = np.where(labels != -100, labels, tokenizer.pad_token_id)
decoded_labels = tokenizer.batch_decode(labels, skip_special_tokens=True)
# Some simple post-processing
decoded_preds, decoded_labels = postprocess_text(decoded_preds, decoded_labels)
result = metric.compute(predictions=decoded_preds, references=decoded_labels, use_stemmer=True)
result = {k: round(v * 100, 4) for k, v in result.items()}
prediction_lens = [np.count_nonzero(pred != tokenizer.pad_token_id) for pred in preds]
result["gen_len"] = np.mean(prediction_lens)
return result
# Override the decoding parameters of Seq2SeqTrainer
training_args.generation_max_length = (
training_args.generation_max_length
if training_args.generation_max_length is not None
else data_args.val_max_target_length
)
training_args.generation_num_beams = (
data_args.num_beams if data_args.num_beams is not None else training_args.generation_num_beams
)
# Initialize our Trainer
trainer = Seq2SeqTrainer(
model=model,
args=training_args,
train_dataset=train_dataset if training_args.do_train else None,
eval_dataset=eval_dataset if training_args.do_eval else None,
tokenizer=tokenizer,
data_collator=data_collator,
compute_metrics=compute_metrics if training_args.predict_with_generate else None,
)
# Training
if training_args.do_train:
checkpoint = None
if training_args.resume_from_checkpoint is not None:
checkpoint = training_args.resume_from_checkpoint
elif last_checkpoint is not None:
checkpoint = last_checkpoint
train_result = trainer.train(resume_from_checkpoint=checkpoint)
trainer.save_model() # Saves the tokenizer too for easy upload
metrics = train_result.metrics
max_train_samples = (
data_args.max_train_samples if data_args.max_train_samples is not None else len(train_dataset)
)
metrics["train_samples"] = min(max_train_samples, len(train_dataset))
trainer.log_metrics("train", metrics)
trainer.save_metrics("train", metrics)
trainer.save_state()
# Evaluation
results = {}
if training_args.do_eval:
logger.info("*** Evaluate ***")
if isinstance(eval_dataset, dict):
metrics = {}
for eval_ds_name, eval_ds in eval_dataset.items():
dataset_metrics = trainer.evaluate(eval_dataset=eval_ds, metric_key_prefix=f"eval_{eval_ds_name}")
metrics.update(dataset_metrics)
else:
metrics = trainer.evaluate(metric_key_prefix="eval")
max_eval_samples = data_args.max_eval_samples if data_args.max_eval_samples is not None else len(eval_dataset)
metrics["eval_samples"] = min(max_eval_samples, len(eval_dataset))
trainer.log_metrics("eval", metrics)
trainer.save_metrics("eval", metrics)
if training_args.do_predict:
logger.info("*** Predict ***")
predict_results = trainer.predict(predict_dataset, metric_key_prefix="predict")
metrics = predict_results.metrics
max_predict_samples = (
data_args.max_predict_samples if data_args.max_predict_samples is not None else len(predict_dataset)
)
metrics["predict_samples"] = min(max_predict_samples, len(predict_dataset))
trainer.log_metrics("predict", metrics)
trainer.save_metrics("predict", metrics)
if trainer.is_world_process_zero():
if training_args.predict_with_generate:
predictions = predict_results.predictions
predictions = np.where(predictions != -100, predictions, tokenizer.pad_token_id)
predictions = tokenizer.batch_decode(
predictions, skip_special_tokens=True, clean_up_tokenization_spaces=True
)
predictions = [pred.strip() for pred in predictions]
output_prediction_file = os.path.join(training_args.output_dir, "generated_predictions.txt")
with open(output_prediction_file, "w") as writer:
writer.write("\n".join(predictions))
kwargs = {"finetuned_from": model_args.model_name_or_path, "tasks": "summarization"}
if data_args.dataset_name is not None:
kwargs["dataset_tags"] = data_args.dataset_name
if data_args.dataset_config_name is not None:
kwargs["dataset_args"] = data_args.dataset_config_name
kwargs["dataset"] = f"{data_args.dataset_name} {data_args.dataset_config_name}"
else:
kwargs["dataset"] = data_args.dataset_name
if data_args.lang is not None:
kwargs["language"] = data_args.lang
if training_args.push_to_hub:
trainer.push_to_hub(**kwargs)
else:
trainer.create_model_card(**kwargs)
return results
def _mp_fn(index):
# For xla_spawn (TPUs)
main()
if __name__ == "__main__":
main()
| transformers/examples/pytorch/summarization/run_summarization.py/0 | {
"file_path": "transformers/examples/pytorch/summarization/run_summarization.py",
"repo_id": "transformers",
"token_count": 13884
} | 285 |
# coding=utf-8
# Copyright 2020 Google AI, Google Brain, the HuggingFace Inc. team and Microsoft Corporation.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""PyTorch ALBERT model with Patience-based Early Exit. """
import logging
import torch
from torch import nn
from torch.nn import CrossEntropyLoss, MSELoss
from transformers.file_utils import add_start_docstrings, add_start_docstrings_to_model_forward
from transformers.models.albert.modeling_albert import (
ALBERT_INPUTS_DOCSTRING,
ALBERT_START_DOCSTRING,
AlbertModel,
AlbertPreTrainedModel,
AlbertTransformer,
)
logger = logging.getLogger(__name__)
class AlbertTransformerWithPabee(AlbertTransformer):
def adaptive_forward(self, hidden_states, current_layer, attention_mask=None, head_mask=None):
if current_layer == 0:
hidden_states = self.embedding_hidden_mapping_in(hidden_states)
else:
hidden_states = hidden_states[0]
layers_per_group = int(self.config.num_hidden_layers / self.config.num_hidden_groups)
# Index of the hidden group
group_idx = int(current_layer / (self.config.num_hidden_layers / self.config.num_hidden_groups))
layer_group_output = self.albert_layer_groups[group_idx](
hidden_states,
attention_mask,
head_mask[group_idx * layers_per_group : (group_idx + 1) * layers_per_group],
)
hidden_states = layer_group_output[0]
return (hidden_states,)
@add_start_docstrings(
"The bare ALBERT Model transformer with PABEE outputting raw hidden-states without any specific head on top.",
ALBERT_START_DOCSTRING,
)
class AlbertModelWithPabee(AlbertModel):
def __init__(self, config):
super().__init__(config)
self.encoder = AlbertTransformerWithPabee(config)
self.init_weights()
self.patience = 0
self.inference_instances_num = 0
self.inference_layers_num = 0
self.regression_threshold = 0
def set_regression_threshold(self, threshold):
self.regression_threshold = threshold
def set_patience(self, patience):
self.patience = patience
def reset_stats(self):
self.inference_instances_num = 0
self.inference_layers_num = 0
def log_stats(self):
avg_inf_layers = self.inference_layers_num / self.inference_instances_num
message = (
f"*** Patience = {self.patience} Avg. Inference Layers = {avg_inf_layers:.2f} Speed Up ="
f" {1 - avg_inf_layers / self.config.num_hidden_layers:.2f} ***"
)
print(message)
@add_start_docstrings_to_model_forward(ALBERT_INPUTS_DOCSTRING)
def forward(
self,
input_ids=None,
attention_mask=None,
token_type_ids=None,
position_ids=None,
head_mask=None,
inputs_embeds=None,
output_dropout=None,
output_layers=None,
regression=False,
):
r"""
Return:
:obj:`tuple(torch.FloatTensor)` comprising various elements depending on the configuration (:class:`~transformers.AlbertConfig`) and inputs:
last_hidden_state (:obj:`torch.FloatTensor` of shape :obj:`(batch_size, sequence_length, hidden_size)`):
Sequence of hidden-states at the output of the last layer of the model.
pooler_output (:obj:`torch.FloatTensor`: of shape :obj:`(batch_size, hidden_size)`):
Last layer hidden-state of the first token of the sequence (classification token)
further processed by a Linear layer and a Tanh activation function. The Linear
layer weights are trained from the next sentence prediction (classification)
objective during pre-training.
This output is usually *not* a good summary
of the semantic content of the input, you're often better with averaging or pooling
the sequence of hidden-states for the whole input sequence.
hidden_states (:obj:`tuple(torch.FloatTensor)`, `optional`, returned when ``config.output_hidden_states=True``):
Tuple of :obj:`torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer)
of shape :obj:`(batch_size, sequence_length, hidden_size)`.
Hidden-states of the model at the output of each layer plus the initial embedding outputs.
attentions (:obj:`tuple(torch.FloatTensor)`, `optional`, returned when ``config.output_attentions=True``):
Tuple of :obj:`torch.FloatTensor` (one for each layer) of shape
:obj:`(batch_size, num_heads, sequence_length, sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
"""
if input_ids is not None and inputs_embeds is not None:
raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time")
elif input_ids is not None:
input_shape = input_ids.size()
elif inputs_embeds is not None:
input_shape = inputs_embeds.size()[:-1]
else:
raise ValueError("You have to specify either input_ids or inputs_embeds")
device = input_ids.device if input_ids is not None else inputs_embeds.device
if attention_mask is None:
attention_mask = torch.ones(input_shape, device=device)
if token_type_ids is None:
token_type_ids = torch.zeros(input_shape, dtype=torch.long, device=device)
extended_attention_mask = attention_mask.unsqueeze(1).unsqueeze(2)
extended_attention_mask = extended_attention_mask.to(dtype=self.dtype) # fp16 compatibility
extended_attention_mask = (1.0 - extended_attention_mask) * -10000.0
head_mask = self.get_head_mask(head_mask, self.config.num_hidden_layers)
embedding_output = self.embeddings(
input_ids, position_ids=position_ids, token_type_ids=token_type_ids, inputs_embeds=inputs_embeds
)
encoder_outputs = embedding_output
if self.training:
res = []
for i in range(self.config.num_hidden_layers):
encoder_outputs = self.encoder.adaptive_forward(
encoder_outputs,
current_layer=i,
attention_mask=extended_attention_mask,
head_mask=head_mask,
)
pooled_output = self.pooler_activation(self.pooler(encoder_outputs[0][:, 0]))
logits = output_layers[i](output_dropout(pooled_output))
res.append(logits)
elif self.patience == 0: # Use all layers for inference
encoder_outputs = self.encoder(encoder_outputs, extended_attention_mask, head_mask=head_mask)
pooled_output = self.pooler_activation(self.pooler(encoder_outputs[0][:, 0]))
res = [output_layers[self.config.num_hidden_layers - 1](pooled_output)]
else:
patient_counter = 0
patient_result = None
calculated_layer_num = 0
for i in range(self.config.num_hidden_layers):
calculated_layer_num += 1
encoder_outputs = self.encoder.adaptive_forward(
encoder_outputs,
current_layer=i,
attention_mask=extended_attention_mask,
head_mask=head_mask,
)
pooled_output = self.pooler_activation(self.pooler(encoder_outputs[0][:, 0]))
logits = output_layers[i](pooled_output)
if regression:
labels = logits.detach()
if patient_result is not None:
patient_labels = patient_result.detach()
if (patient_result is not None) and torch.abs(patient_result - labels) < self.regression_threshold:
patient_counter += 1
else:
patient_counter = 0
else:
labels = logits.detach().argmax(dim=1)
if patient_result is not None:
patient_labels = patient_result.detach().argmax(dim=1)
if (patient_result is not None) and torch.all(labels.eq(patient_labels)):
patient_counter += 1
else:
patient_counter = 0
patient_result = logits
if patient_counter == self.patience:
break
res = [patient_result]
self.inference_layers_num += calculated_layer_num
self.inference_instances_num += 1
return res
@add_start_docstrings(
"""Albert Model transformer with PABEE and a sequence classification/regression head on top (a linear layer on top of
the pooled output) e.g. for GLUE tasks. """,
ALBERT_START_DOCSTRING,
)
class AlbertForSequenceClassificationWithPabee(AlbertPreTrainedModel):
def __init__(self, config):
super().__init__(config)
self.num_labels = config.num_labels
self.albert = AlbertModelWithPabee(config)
self.dropout = nn.Dropout(config.classifier_dropout_prob)
self.classifiers = nn.ModuleList(
[nn.Linear(config.hidden_size, self.config.num_labels) for _ in range(config.num_hidden_layers)]
)
self.init_weights()
@add_start_docstrings_to_model_forward(ALBERT_INPUTS_DOCSTRING)
def forward(
self,
input_ids=None,
attention_mask=None,
token_type_ids=None,
position_ids=None,
head_mask=None,
inputs_embeds=None,
labels=None,
):
r"""
labels (:obj:`torch.LongTensor` of shape :obj:`(batch_size,)`, `optional`):
Labels for computing the sequence classification/regression loss.
Indices should be in ``[0, ..., config.num_labels - 1]``.
If ``config.num_labels == 1`` a regression loss is computed (Mean-Square loss),
If ``config.num_labels > 1`` a classification loss is computed (Cross-Entropy).
Returns:
:obj:`tuple(torch.FloatTensor)` comprising various elements depending on the configuration (:class:`~transformers.AlbertConfig`) and inputs:
loss (`optional`, returned when ``labels`` is provided) ``torch.FloatTensor`` of shape ``(1,)``:
Classification (or regression if config.num_labels==1) loss.
logits ``torch.FloatTensor`` of shape ``(batch_size, config.num_labels)``
Classification (or regression if config.num_labels==1) scores (before SoftMax).
hidden_states (:obj:`tuple(torch.FloatTensor)`, `optional`, returned when ``config.output_hidden_states=True``):
Tuple of :obj:`torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer)
of shape :obj:`(batch_size, sequence_length, hidden_size)`.
Hidden-states of the model at the output of each layer plus the initial embedding outputs.
attentions (:obj:`tuple(torch.FloatTensor)`, `optional`, returned when ``config.output_attentions=True``):
Tuple of :obj:`torch.FloatTensor` (one for each layer) of shape
:obj:`(batch_size, num_heads, sequence_length, sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
Examples::
from transformers import AlbertTokenizer
from pabee import AlbertForSequenceClassificationWithPabee
from torch import nn
import torch
tokenizer = AlbertTokenizer.from_pretrained('albert/albert-base-v2')
model = AlbertForSequenceClassificationWithPabee.from_pretrained('albert/albert-base-v2')
input_ids = torch.tensor(tokenizer.encode("Hello, my dog is cute")).unsqueeze(0) # Batch size 1
labels = torch.tensor([1]).unsqueeze(0) # Batch size 1
outputs = model(input_ids, labels=labels)
loss, logits = outputs[:2]
"""
logits = self.albert(
input_ids=input_ids,
attention_mask=attention_mask,
token_type_ids=token_type_ids,
position_ids=position_ids,
head_mask=head_mask,
inputs_embeds=inputs_embeds,
output_dropout=self.dropout,
output_layers=self.classifiers,
regression=self.num_labels == 1,
)
outputs = (logits[-1],)
if labels is not None:
total_loss = None
total_weights = 0
for ix, logits_item in enumerate(logits):
if self.num_labels == 1:
# We are doing regression
loss_fct = MSELoss()
loss = loss_fct(logits_item.view(-1), labels.view(-1))
else:
loss_fct = CrossEntropyLoss()
loss = loss_fct(logits_item.view(-1, self.num_labels), labels.view(-1))
if total_loss is None:
total_loss = loss
else:
total_loss += loss * (ix + 1)
total_weights += ix + 1
outputs = (total_loss / total_weights,) + outputs
return outputs
| transformers/examples/research_projects/bert-loses-patience/pabee/modeling_pabee_albert.py/0 | {
"file_path": "transformers/examples/research_projects/bert-loses-patience/pabee/modeling_pabee_albert.py",
"repo_id": "transformers",
"token_count": 6317
} | 286 |
#!/usr/bin/env python3
""" This script is adapted from the Bertology pruning code (https://github.com/huggingface/transformers/blob/783d7d2629e97c5f0c5f9ef01b8c66410275c204/examples/research_projects/bertology/run_bertology.py)
to prune GPT-like models. The author is @altsoph.
"""
import argparse
import logging
import os
from datetime import datetime
import numpy as np
import torch
from torch import nn
from torch.utils.data import DataLoader, RandomSampler, TensorDataset
from tqdm import tqdm
from transformers import GPT2LMHeadModel
logger = logging.getLogger(__name__)
def save_model(model, dirpath):
# save results
if os.path.exists(dirpath):
if os.path.exists(os.path.join(dirpath, "config.json")) and os.path.isfile(
os.path.join(dirpath, "config.json")
):
os.remove(os.path.join(dirpath, "config.json"))
if os.path.exists(os.path.join(dirpath, "pytorch_model.bin")) and os.path.isfile(
os.path.join(dirpath, "pytorch_model.bin")
):
os.remove(os.path.join(dirpath, "pytorch_model.bin"))
else:
os.makedirs(dirpath)
model.save_pretrained(dirpath)
def entropy(p, unlogit=False):
"""Compute the entropy of a probability distribution"""
exponent = 2
if unlogit:
p = torch.pow(p, exponent)
plogp = p * torch.log(p)
plogp[p == 0] = 0
return -plogp.sum(dim=-1)
def print_2d_tensor(tensor):
"""Print a 2D tensor"""
logger.info("lv, h >\t" + "\t".join(f"{x + 1}" for x in range(len(tensor))))
for row in range(len(tensor)):
if tensor.dtype != torch.long:
logger.info(f"layer {row + 1}:\t" + "\t".join(f"{x:.5f}" for x in tensor[row].cpu().data))
else:
logger.info(f"layer {row + 1}:\t" + "\t".join(f"{x:d}" for x in tensor[row].cpu().data))
def compute_heads_importance(
args, model, eval_dataloader, compute_entropy=True, compute_importance=True, head_mask=None, actually_pruned=False
):
"""This method shows how to compute:
- head attention entropy
- head importance scores according to http://arxiv.org/abs/1905.10650
"""
# Prepare our tensors
n_layers, n_heads = model.config.num_hidden_layers, model.config.num_attention_heads
head_importance = torch.zeros(n_layers, n_heads).to(args.device)
attn_entropy = torch.zeros(n_layers, n_heads).to(args.device)
if head_mask is None:
head_mask = torch.ones(n_layers, n_heads).to(args.device)
head_mask.requires_grad_(requires_grad=True)
# If actually pruned attention multi-head, set head mask to None to avoid shape mismatch
if actually_pruned:
head_mask = None
tot_tokens = 0.0
total_loss = 0.0
for step, inputs in enumerate(tqdm(eval_dataloader, desc="Iteration", disable=args.local_rank not in [-1, 0])):
inputs = tuple(t.to(args.device) for t in inputs)
(input_ids,) = inputs
# Do a forward pass (not with torch.no_grad() since we need gradients for importance score - see below)
outputs = model(input_ids, labels=input_ids, head_mask=head_mask)
# (loss), lm_logits, presents, (all hidden_states), (attentions)
loss, _, all_attentions = (
outputs[0],
outputs[1],
outputs[-1],
) # Loss and logits are the first, attention the last
loss.backward() # Backpropagate to populate the gradients in the head mask
total_loss += loss.detach().cpu().numpy()
if compute_entropy:
for layer, attn in enumerate(all_attentions):
masked_entropy = entropy(attn.detach(), True)
attn_entropy[layer] += masked_entropy.sum(-1).sum(0).sum(0).detach()
if compute_importance:
head_importance += head_mask.grad.abs().detach()
tot_tokens += torch.ones_like(input_ids).float().detach().sum().data
# Normalize
attn_entropy /= tot_tokens
head_importance /= tot_tokens
# Layerwise importance normalization
if not args.dont_normalize_importance_by_layer:
exponent = 2
norm_by_layer = torch.pow(torch.pow(head_importance, exponent).sum(-1), 1 / exponent)
head_importance /= norm_by_layer.unsqueeze(-1) + 1e-20
if not args.dont_normalize_global_importance:
head_importance = (head_importance - head_importance.min()) / (head_importance.max() - head_importance.min())
# Print matrices
if compute_entropy:
logger.info("Attention entropies")
print_2d_tensor(attn_entropy)
if compute_importance:
logger.info("Head importance scores")
print_2d_tensor(head_importance)
logger.info("Head ranked by importance scores")
head_ranks = torch.zeros(head_importance.numel(), dtype=torch.long, device=args.device)
head_ranks[head_importance.view(-1).sort(descending=True)[1]] = torch.arange(
head_importance.numel(), device=args.device
)
head_ranks = head_ranks.view_as(head_importance)
print_2d_tensor(head_ranks)
return attn_entropy, head_importance, total_loss
def mask_heads(args, model, eval_dataloader):
"""This method shows how to mask head (set some heads to zero), to test the effect on the network,
based on the head importance scores, as described in Michel et al. (http://arxiv.org/abs/1905.10650)
"""
_, head_importance, loss = compute_heads_importance(args, model, eval_dataloader, compute_entropy=False)
original_score = 1 / loss # instead of downsteam score use the LM loss
logger.info("Pruning: original score: %f, threshold: %f", original_score, original_score * args.masking_threshold)
new_head_mask = torch.ones_like(head_importance)
num_to_mask = max(1, int(new_head_mask.numel() * args.masking_amount))
current_score = original_score
while current_score >= original_score * args.masking_threshold:
head_mask = new_head_mask.clone().detach() # save current head mask
# heads from least important to most - keep only not-masked heads
head_importance[head_mask == 0.0] = float("Inf")
current_heads_to_mask = head_importance.view(-1).sort()[1]
if len(current_heads_to_mask) <= num_to_mask:
print("BREAK BY num_to_mask")
break
# mask heads
current_heads_to_mask = current_heads_to_mask[:num_to_mask]
logger.info("Heads to mask: %s", str(current_heads_to_mask.tolist()))
new_head_mask = new_head_mask.view(-1)
new_head_mask[current_heads_to_mask] = 0.0
new_head_mask = new_head_mask.view_as(head_mask)
new_head_mask = new_head_mask.clone().detach()
print_2d_tensor(new_head_mask)
# Compute metric and head importance again
_, head_importance, loss = compute_heads_importance(
args, model, eval_dataloader, compute_entropy=False, head_mask=new_head_mask
)
current_score = 1 / loss
logger.info(
"Masking: current score: %f, remaining heads %d (%.1f percents)",
current_score,
new_head_mask.sum(),
new_head_mask.sum() / new_head_mask.numel() * 100,
)
logger.info("Final head mask")
print_2d_tensor(head_mask)
np.save(os.path.join(args.output_dir, "head_mask.npy"), head_mask.detach().cpu().numpy())
return head_mask
def prune_heads(args, model, eval_dataloader, head_mask):
"""This method shows how to prune head (remove heads weights) based on
the head importance scores as described in Michel et al. (http://arxiv.org/abs/1905.10650)
"""
# Try pruning and test time speedup
# Pruning is like masking but we actually remove the masked weights
before_time = datetime.now()
_, _, loss = compute_heads_importance(
args, model, eval_dataloader, compute_entropy=False, compute_importance=False, head_mask=head_mask
)
score_masking = 1 / loss
original_time = datetime.now() - before_time
original_num_params = sum(p.numel() for p in model.parameters())
heads_to_prune = {
layer: (1 - head_mask[layer].long()).nonzero().squeeze().tolist() for layer in range(len(head_mask))
}
for k, v in heads_to_prune.items():
if isinstance(v, int):
heads_to_prune[k] = [
v,
]
assert sum(len(h) for h in heads_to_prune.values()) == (1 - head_mask.long()).sum().item()
model.prune_heads(heads_to_prune)
pruned_num_params = sum(p.numel() for p in model.parameters())
before_time = datetime.now()
_, _, loss = compute_heads_importance(
args,
model,
eval_dataloader,
compute_entropy=False,
compute_importance=False,
head_mask=None,
actually_pruned=True,
)
score_pruning = 1 / loss
new_time = datetime.now() - before_time
logger.info(
"Pruning: original num of params: %.2e, after pruning %.2e (%.1f percents)",
original_num_params,
pruned_num_params,
pruned_num_params / original_num_params * 100,
)
logger.info("Pruning: score with masking: %f score with pruning: %f", score_masking, score_pruning)
logger.info("Pruning: speed ratio (original timing / new timing): %f percents", original_time / new_time * 100)
save_model(model, args.output_dir)
def main():
parser = argparse.ArgumentParser()
# Required parameters
parser.add_argument(
"--data_dir",
default=None,
type=str,
required=True,
help="The input data dir. Should contain the .tsv files (or other data files) for the task.",
)
parser.add_argument(
"--model_name_or_path",
default=None,
type=str,
required=True,
help="Path to pretrained model or model identifier from huggingface.co/models",
)
parser.add_argument(
"--output_dir",
default=None,
type=str,
required=True,
help="The output directory where the model predictions and checkpoints will be written.",
)
# Other parameters
parser.add_argument(
"--config_name",
default="",
type=str,
help="Pretrained config name or path if not the same as model_name_or_path",
)
parser.add_argument(
"--tokenizer_name",
default="",
type=str,
help="Pretrained tokenizer name or path if not the same as model_name_or_path",
)
parser.add_argument(
"--cache_dir",
default=None,
type=str,
help="Where do you want to store the pre-trained models downloaded from s3",
)
parser.add_argument(
"--data_subset", type=int, default=-1, help="If > 0: limit the data to a subset of data_subset instances."
)
parser.add_argument(
"--overwrite_output_dir", action="store_true", help="Whether to overwrite data in output directory"
)
parser.add_argument(
"--overwrite_cache", action="store_true", help="Overwrite the cached training and evaluation sets"
)
parser.add_argument(
"--dont_normalize_importance_by_layer", action="store_true", help="Don't normalize importance score by layers"
)
parser.add_argument(
"--dont_normalize_global_importance",
action="store_true",
help="Don't normalize all importance scores between 0 and 1",
)
parser.add_argument(
"--try_masking", action="store_true", help="Whether to try to mask head until a threshold of accuracy."
)
parser.add_argument(
"--masking_threshold",
default=0.9,
type=float,
help="masking threshold in term of metrics (stop masking when metric < threshold * original metric value).",
)
parser.add_argument(
"--masking_amount", default=0.1, type=float, help="Amount to heads to masking at each masking step."
)
parser.add_argument("--metric_name", default="acc", type=str, help="Metric to use for head masking.")
parser.add_argument(
"--max_seq_length",
default=128,
type=int,
help=(
"The maximum total input sequence length after WordPiece tokenization. \n"
"Sequences longer than this will be truncated, sequences shorter padded."
),
)
parser.add_argument("--batch_size", default=1, type=int, help="Batch size.")
parser.add_argument("--seed", type=int, default=42)
parser.add_argument("--local_rank", type=int, default=-1, help="local_rank for distributed training on gpus")
parser.add_argument("--no_cuda", action="store_true", help="Whether not to use CUDA when available")
parser.add_argument("--server_ip", type=str, default="", help="Can be used for distant debugging.")
parser.add_argument("--server_port", type=str, default="", help="Can be used for distant debugging.")
args = parser.parse_args()
if args.server_ip and args.server_port:
# Distant debugging - see https://code.visualstudio.com/docs/python/debugging#_attach-to-a-local-script
import ptvsd
print("Waiting for debugger attach")
ptvsd.enable_attach(address=(args.server_ip, args.server_port), redirect_output=True)
ptvsd.wait_for_attach()
# Setup devices and distributed training
if args.local_rank == -1 or args.no_cuda:
args.device = torch.device("cuda" if torch.cuda.is_available() and not args.no_cuda else "cpu")
args.n_gpu = 0 if args.no_cuda else torch.cuda.device_count()
else:
torch.cuda.set_device(args.local_rank)
args.device = torch.device("cuda", args.local_rank)
args.n_gpu = 1
torch.distributed.init_process_group(backend="nccl") # Initializes the distributed backend
# Setup logging
logging.basicConfig(level=logging.INFO if args.local_rank in [-1, 0] else logging.WARN)
logger.info("device: {} n_gpu: {}, distributed: {}".format(args.device, args.n_gpu, bool(args.local_rank != -1)))
model = GPT2LMHeadModel.from_pretrained(args.model_name_or_path)
# Distributed and parallel training
model.to(args.device)
if args.local_rank != -1:
model = nn.parallel.DistributedDataParallel(
model, device_ids=[args.local_rank], output_device=args.local_rank, find_unused_parameters=True
)
elif args.n_gpu > 1:
model = nn.DataParallel(model)
# Print/save training arguments
os.makedirs(args.output_dir, exist_ok=True)
torch.save(args, os.path.join(args.output_dir, "run_args.bin"))
logger.info("Training/evaluation parameters %s", args)
# Prepare dataset
numpy_data = np.concatenate(
[
np.loadtxt(args.data_dir, dtype=np.int64),
]
)
train_tensor_dataset = (torch.from_numpy(numpy_data),)
train_data = TensorDataset(*train_tensor_dataset)
train_sampler = RandomSampler(train_data)
eval_dataloader = DataLoader(train_data, sampler=train_sampler, batch_size=args.batch_size)
# Compute head entropy and importance score
compute_heads_importance(args, model, eval_dataloader)
# Try head masking (set heads to zero until the score goes under a threshole)
# and head pruning (remove masked heads and see the effect on the network)
if args.try_masking and args.masking_threshold > 0.0 and args.masking_threshold < 1.0:
head_mask = mask_heads(args, model, eval_dataloader)
prune_heads(args, model, eval_dataloader, head_mask)
if __name__ == "__main__":
main()
| transformers/examples/research_projects/bertology/run_prune_gpt.py/0 | {
"file_path": "transformers/examples/research_projects/bertology/run_prune_gpt.py",
"repo_id": "transformers",
"token_count": 6338
} | 287 |
import logging
import torch
from accelerate import Accelerator
from arguments import EvaluationArguments
from datasets import load_dataset
from torch.utils.data import IterableDataset
from torch.utils.data.dataloader import DataLoader
from transformers import AutoModelForCausalLM, AutoTokenizer, HfArgumentParser, set_seed
class ConstantLengthDataset(IterableDataset):
def __init__(self, tokenizer, dataset, seq_length=1024, num_of_sequences=1024, chars_per_token=3.6):
self.tokenizer = tokenizer
self.concat_token_id = tokenizer.bos_token_id
self.dataset = dataset
self.seq_length = seq_length
self.input_characters = seq_length * chars_per_token * num_of_sequences
def __iter__(self):
iterator = iter(self.dataset)
more_examples = True
while more_examples:
buffer, buffer_len = [], 0
while True:
if buffer_len >= self.input_characters:
break
try:
buffer.append(next(iterator)["content"])
buffer_len += len(buffer[-1])
except StopIteration:
more_examples = False
break
tokenized_inputs = tokenizer(buffer, truncation=False)["input_ids"]
all_token_ids = []
for tokenized_input in tokenized_inputs:
all_token_ids.extend(tokenized_input + [self.concat_token_id])
for i in range(0, len(all_token_ids), self.seq_length):
input_ids = all_token_ids[i : i + self.seq_length]
if len(input_ids) == self.seq_length:
yield torch.tensor(input_ids)
def create_dataloader(args):
ds_kwargs = {"streaming": True}
valid_data = load_dataset(args.dataset_name, split="train", **ds_kwargs)
valid_dataset = ConstantLengthDataset(tokenizer, valid_data, seq_length=args.seq_length)
eval_dataloader = DataLoader(valid_dataset, batch_size=args.batch_size)
return eval_dataloader
def evaluate(args):
model.eval()
losses = []
for step, batch in enumerate(eval_dataloader):
with torch.no_grad():
outputs = model(batch, labels=batch)
loss = outputs.loss.repeat(args.batch_size)
losses.append(accelerator.gather(loss))
if args.max_eval_steps > 0 and step >= args.max_eval_steps:
break
loss = torch.mean(torch.cat(losses))
try:
perplexity = torch.exp(loss)
except OverflowError:
perplexity = float("inf")
return loss.item(), perplexity.item()
# Setup Accelerator
accelerator = Accelerator()
# Parse configuration
parser = HfArgumentParser(EvaluationArguments)
args = parser.parse_args()
set_seed(args.seed)
# Logging
logger = logging.getLogger(__name__)
logging.basicConfig(
format="%(asctime)s - %(levelname)s - %(name)s - %(message)s", datefmt="%m/%d/%Y %H:%M:%S", level=logging.INFO
)
# Load model and tokenizer
model = AutoModelForCausalLM.from_pretrained(args.model_ckpt)
tokenizer = AutoTokenizer.from_pretrained(args.model_ckpt)
# Load dataset and dataloader
eval_dataloader = create_dataloader(args)
# Prepare everything with our `accelerator`.
model, eval_dataloader = accelerator.prepare(model, eval_dataloader)
# Evaluate and save the last checkpoint
logger.info("Evaluating and saving model after training")
eval_loss, perplexity = evaluate(args)
logger.info(f"loss/eval: {eval_loss}, perplexity: {perplexity}")
| transformers/examples/research_projects/codeparrot/scripts/validation_loss.py/0 | {
"file_path": "transformers/examples/research_projects/codeparrot/scripts/validation_loss.py",
"repo_id": "transformers",
"token_count": 1471
} | 288 |
# coding=utf-8
# Copyright 2019-present, the HuggingFace Inc. team and Facebook, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
""" Dataset to distilled models
adapted in part from Facebook, Inc XLM model (https://github.com/facebookresearch/XLM)
"""
import numpy as np
import torch
from torch.utils.data import Dataset
from utils import logger
class LmSeqsDataset(Dataset):
"""Custom Dataset wrapping language modeling sequences.
Each sample will be retrieved by indexing the list of token_ids and their corresponding lengths.
Input:
------
params: `NameSpace` parameters
data: `List[np.array[int]]
"""
def __init__(self, params, data):
self.params = params
self.token_ids = np.array(data)
self.lengths = np.array([len(t) for t in data])
self.check()
self.remove_long_sequences()
self.remove_empty_sequences()
self.remove_unknown_sequences()
self.check()
self.print_statistics()
def __getitem__(self, index):
return (self.token_ids[index], self.lengths[index])
def __len__(self):
return len(self.lengths)
def check(self):
"""
Some sanity checks
"""
assert len(self.token_ids) == len(self.lengths)
assert all(self.lengths[i] == len(self.token_ids[i]) for i in range(len(self.lengths)))
def remove_long_sequences(self):
"""
Sequences that are too long are split by chunk of max_model_input_size.
"""
max_len = self.params.max_model_input_size
indices = self.lengths > max_len
logger.info(f"Splitting {sum(indices)} too long sequences.")
def divide_chunks(l, n):
return [l[i : i + n] for i in range(0, len(l), n)]
new_tok_ids = []
new_lengths = []
if self.params.mlm:
cls_id, sep_id = self.params.special_tok_ids["cls_token"], self.params.special_tok_ids["sep_token"]
else:
cls_id, sep_id = self.params.special_tok_ids["bos_token"], self.params.special_tok_ids["eos_token"]
for seq_, len_ in zip(self.token_ids, self.lengths):
assert (seq_[0] == cls_id) and (seq_[-1] == sep_id), seq_
if len_ <= max_len:
new_tok_ids.append(seq_)
new_lengths.append(len_)
else:
sub_seqs = []
for sub_s in divide_chunks(seq_, max_len - 2):
if sub_s[0] != cls_id:
sub_s = np.insert(sub_s, 0, cls_id)
if sub_s[-1] != sep_id:
sub_s = np.insert(sub_s, len(sub_s), sep_id)
assert len(sub_s) <= max_len
assert (sub_s[0] == cls_id) and (sub_s[-1] == sep_id), sub_s
sub_seqs.append(sub_s)
new_tok_ids.extend(sub_seqs)
new_lengths.extend([len(l) for l in sub_seqs])
self.token_ids = np.array(new_tok_ids)
self.lengths = np.array(new_lengths)
def remove_empty_sequences(self):
"""
Too short sequences are simply removed. This could be tuned.
"""
init_size = len(self)
indices = self.lengths > 11
self.token_ids = self.token_ids[indices]
self.lengths = self.lengths[indices]
new_size = len(self)
logger.info(f"Remove {init_size - new_size} too short (<=11 tokens) sequences.")
def remove_unknown_sequences(self):
"""
Remove sequences with a (too) high level of unknown tokens.
"""
if "unk_token" not in self.params.special_tok_ids:
return
else:
unk_token_id = self.params.special_tok_ids["unk_token"]
init_size = len(self)
unk_occs = np.array([np.count_nonzero(a == unk_token_id) for a in self.token_ids])
indices = (unk_occs / self.lengths) < 0.5
self.token_ids = self.token_ids[indices]
self.lengths = self.lengths[indices]
new_size = len(self)
logger.info(f"Remove {init_size - new_size} sequences with a high level of unknown tokens (50%).")
def print_statistics(self):
"""
Print some statistics on the corpus. Only the master process.
"""
if not self.params.is_master:
return
logger.info(f"{len(self)} sequences")
# data_len = sum(self.lengths)
# nb_unique_tokens = len(Counter(list(chain(*self.token_ids))))
# logger.info(f'{data_len} tokens ({nb_unique_tokens} unique)')
# unk_idx = self.params.special_tok_ids['unk_token']
# nb_unknown = sum([(t==unk_idx).sum() for t in self.token_ids])
# logger.info(f'{nb_unknown} unknown tokens (covering {100*nb_unknown/data_len:.2f}% of the data)')
def batch_sequences(self, batch):
"""
Do the padding and transform into torch.tensor.
"""
token_ids = [t[0] for t in batch]
lengths = [t[1] for t in batch]
assert len(token_ids) == len(lengths)
# Max for paddings
max_seq_len_ = max(lengths)
# Pad token ids
if self.params.mlm:
pad_idx = self.params.special_tok_ids["pad_token"]
else:
pad_idx = self.params.special_tok_ids["unk_token"]
tk_ = [list(t.astype(int)) + [pad_idx] * (max_seq_len_ - len(t)) for t in token_ids]
assert len(tk_) == len(token_ids)
assert all(len(t) == max_seq_len_ for t in tk_)
tk_t = torch.tensor(tk_) # (bs, max_seq_len_)
lg_t = torch.tensor(lengths) # (bs)
return tk_t, lg_t
| transformers/examples/research_projects/distillation/lm_seqs_dataset.py/0 | {
"file_path": "transformers/examples/research_projects/distillation/lm_seqs_dataset.py",
"repo_id": "transformers",
"token_count": 2821
} | 289 |
import os
import jsonlines
import numpy as np
from tqdm import tqdm
DOC_STRIDE = 2048
MAX_LENGTH = 4096
SEED = 42
PROCESS_TRAIN = os.environ.pop("PROCESS_TRAIN", "false")
CATEGORY_MAPPING = {"null": 0, "short": 1, "long": 2, "yes": 3, "no": 4}
def _get_single_answer(example):
def choose_first(answer, is_long_answer=False):
assert isinstance(answer, list)
if len(answer) == 1:
answer = answer[0]
return {k: [answer[k]] for k in answer} if is_long_answer else answer
for a in answer:
if is_long_answer:
a = {k: [a[k]] for k in a}
if len(a["start_token"]) > 0:
break
return a
answer = {"id": example["id"]}
annotation = example["annotations"]
yes_no_answer = annotation["yes_no_answer"]
if 0 in yes_no_answer or 1 in yes_no_answer:
answer["category"] = ["yes"] if 1 in yes_no_answer else ["no"]
answer["start_token"] = answer["end_token"] = []
answer["start_byte"] = answer["end_byte"] = []
answer["text"] = ["<cls>"]
else:
answer["category"] = ["short"]
out = choose_first(annotation["short_answers"])
if len(out["start_token"]) == 0:
# answer will be long if short is not available
answer["category"] = ["long"]
out = choose_first(annotation["long_answer"], is_long_answer=True)
out["text"] = []
answer.update(out)
# disregard some samples
if len(answer["start_token"]) > 1 or answer["start_token"] == answer["end_token"]:
answer["remove_it"] = True
else:
answer["remove_it"] = False
cols = ["start_token", "end_token", "start_byte", "end_byte", "text"]
if not all(isinstance(answer[k], list) for k in cols):
raise ValueError("Issue in ID", example["id"])
return answer
def get_context_and_ans(example, assertion=False):
"""Gives new context after removing <html> & new answer tokens as per new context"""
answer = _get_single_answer(example)
# bytes are of no use
del answer["start_byte"]
del answer["end_byte"]
# handle yes_no answers explicitly
if answer["category"][0] in ["yes", "no"]: # category is list with one element
doc = example["document"]["tokens"]
context = []
for i in range(len(doc["token"])):
if not doc["is_html"][i]:
context.append(doc["token"][i])
return {
"context": " ".join(context),
"answer": {
"start_token": -100, # ignore index in cross-entropy
"end_token": -100, # ignore index in cross-entropy
"category": answer["category"],
"span": answer["category"], # extra
},
}
# later, help in removing all no answers
if answer["start_token"] == [-1]:
return {
"context": "None",
"answer": {
"start_token": -1,
"end_token": -1,
"category": "null",
"span": "None", # extra
},
}
# handling normal samples
cols = ["start_token", "end_token"]
answer.update({k: answer[k][0] if len(answer[k]) > 0 else answer[k] for k in cols}) # e.g. [10] == 10
doc = example["document"]["tokens"]
start_token = answer["start_token"]
end_token = answer["end_token"]
context = []
for i in range(len(doc["token"])):
if not doc["is_html"][i]:
context.append(doc["token"][i])
else:
if answer["start_token"] > i:
start_token -= 1
if answer["end_token"] > i:
end_token -= 1
new = " ".join(context[start_token:end_token])
# checking above code
if assertion:
"""checking if above code is working as expected for all the samples"""
is_html = doc["is_html"][answer["start_token"] : answer["end_token"]]
old = doc["token"][answer["start_token"] : answer["end_token"]]
old = " ".join([old[i] for i in range(len(old)) if not is_html[i]])
if new != old:
print("ID:", example["id"])
print("New:", new, end="\n")
print("Old:", old, end="\n\n")
return {
"context": " ".join(context),
"answer": {
"start_token": start_token,
"end_token": end_token - 1, # this makes it inclusive
"category": answer["category"], # either long or short
"span": new, # extra
},
}
def get_strided_contexts_and_ans(example, tokenizer, doc_stride=2048, max_length=4096, assertion=True):
# overlap will be of doc_stride - q_len
out = get_context_and_ans(example, assertion=assertion)
answer = out["answer"]
# later, removing these samples
if answer["start_token"] == -1:
return {
"example_id": example["id"],
"input_ids": [[-1]],
"labels": {
"start_token": [-1],
"end_token": [-1],
"category": ["null"],
},
}
input_ids = tokenizer(example["question"]["text"], out["context"]).input_ids
q_len = input_ids.index(tokenizer.sep_token_id) + 1
# return yes/no
if answer["category"][0] in ["yes", "no"]: # category is list with one element
inputs = []
category = []
q_indices = input_ids[:q_len]
doc_start_indices = range(q_len, len(input_ids), max_length - doc_stride)
for i in doc_start_indices:
end_index = i + max_length - q_len
slice = input_ids[i:end_index]
inputs.append(q_indices + slice)
category.append(answer["category"][0])
if slice[-1] == tokenizer.sep_token_id:
break
return {
"example_id": example["id"],
"input_ids": inputs,
"labels": {
"start_token": [-100] * len(category),
"end_token": [-100] * len(category),
"category": category,
},
}
splitted_context = out["context"].split()
complete_end_token = splitted_context[answer["end_token"]]
answer["start_token"] = len(
tokenizer(
" ".join(splitted_context[: answer["start_token"]]),
add_special_tokens=False,
).input_ids
)
answer["end_token"] = len(
tokenizer(" ".join(splitted_context[: answer["end_token"]]), add_special_tokens=False).input_ids
)
answer["start_token"] += q_len
answer["end_token"] += q_len
# fixing end token
num_sub_tokens = len(tokenizer(complete_end_token, add_special_tokens=False).input_ids)
if num_sub_tokens > 1:
answer["end_token"] += num_sub_tokens - 1
old = input_ids[answer["start_token"] : answer["end_token"] + 1] # right & left are inclusive
start_token = answer["start_token"]
end_token = answer["end_token"]
if assertion:
"""This won't match exactly because of extra gaps => visaully inspect everything"""
new = tokenizer.decode(old)
if answer["span"] != new:
print("ISSUE IN TOKENIZATION")
print("OLD:", answer["span"])
print("NEW:", new, end="\n\n")
if len(input_ids) <= max_length:
return {
"example_id": example["id"],
"input_ids": [input_ids],
"labels": {
"start_token": [answer["start_token"]],
"end_token": [answer["end_token"]],
"category": answer["category"],
},
}
q_indices = input_ids[:q_len]
doc_start_indices = range(q_len, len(input_ids), max_length - doc_stride)
inputs = []
answers_start_token = []
answers_end_token = []
answers_category = [] # null, yes, no, long, short
for i in doc_start_indices:
end_index = i + max_length - q_len
slice = input_ids[i:end_index]
inputs.append(q_indices + slice)
assert len(inputs[-1]) <= max_length, "Issue in truncating length"
if start_token >= i and end_token <= end_index - 1:
start_token = start_token - i + q_len
end_token = end_token - i + q_len
answers_category.append(answer["category"][0]) # ["short"] -> "short"
else:
start_token = -100
end_token = -100
answers_category.append("null")
new = inputs[-1][start_token : end_token + 1]
answers_start_token.append(start_token)
answers_end_token.append(end_token)
if assertion:
"""checking if above code is working as expected for all the samples"""
if new != old and new != [tokenizer.cls_token_id]:
print("ISSUE in strided for ID:", example["id"])
print("New:", tokenizer.decode(new))
print("Old:", tokenizer.decode(old), end="\n\n")
if slice[-1] == tokenizer.sep_token_id:
break
return {
"example_id": example["id"],
"input_ids": inputs,
"labels": {
"start_token": answers_start_token,
"end_token": answers_end_token,
"category": answers_category,
},
}
def prepare_inputs(example, tokenizer, doc_stride=2048, max_length=4096, assertion=False):
example = get_strided_contexts_and_ans(
example,
tokenizer,
doc_stride=doc_stride,
max_length=max_length,
assertion=assertion,
)
return example
def save_to_disk(hf_data, file_name):
with jsonlines.open(file_name, "a") as writer:
for example in tqdm(hf_data, total=len(hf_data), desc="Saving samples ... "):
labels = example["labels"]
for ids, start, end, cat in zip(
example["input_ids"],
labels["start_token"],
labels["end_token"],
labels["category"],
):
if start == -1 and end == -1:
continue # leave waste samples with no answer
if cat == "null" and np.random.rand() < 0.6:
continue # removing 50 % samples
writer.write(
{
"input_ids": ids,
"start_token": start,
"end_token": end,
"category": CATEGORY_MAPPING[cat],
}
)
if __name__ == "__main__":
"""Running area"""
from datasets import load_dataset
from transformers import BigBirdTokenizer
data = load_dataset("natural_questions")
tokenizer = BigBirdTokenizer.from_pretrained("google/bigbird-roberta-base")
data = data["train" if PROCESS_TRAIN == "true" else "validation"]
fn_kwargs = {
"tokenizer": tokenizer,
"doc_stride": DOC_STRIDE,
"max_length": MAX_LENGTH,
"assertion": False,
}
data = data.map(prepare_inputs, fn_kwargs=fn_kwargs)
data = data.remove_columns(["annotations", "document", "id", "question"])
print(data)
np.random.seed(SEED)
cache_file_name = "nq-training.jsonl" if PROCESS_TRAIN == "true" else "nq-validation.jsonl"
save_to_disk(data, file_name=cache_file_name)
| transformers/examples/research_projects/jax-projects/big_bird/prepare_natural_questions.py/0 | {
"file_path": "transformers/examples/research_projects/jax-projects/big_bird/prepare_natural_questions.py",
"repo_id": "transformers",
"token_count": 5324
} | 290 |
<!---
Copyright 2022 The HuggingFace Team. All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
# Token classification with LayoutLMv3 (PyTorch version)
This directory contains a script, `run_funsd_cord.py`, that can be used to fine-tune (or evaluate) LayoutLMv3 on form understanding datasets, such as [FUNSD](https://guillaumejaume.github.io/FUNSD/) and [CORD](https://github.com/clovaai/cord).
The script `run_funsd_cord.py` leverages the 🤗 Datasets library and the Trainer API. You can easily customize it to your needs.
## Fine-tuning on FUNSD
Fine-tuning LayoutLMv3 for token classification on [FUNSD](https://guillaumejaume.github.io/FUNSD/) can be done as follows:
```bash
python run_funsd_cord.py \
--model_name_or_path microsoft/layoutlmv3-base \
--dataset_name funsd \
--output_dir layoutlmv3-test \
--do_train \
--do_eval \
--max_steps 1000 \
--evaluation_strategy steps \
--eval_steps 100 \
--learning_rate 1e-5 \
--load_best_model_at_end \
--metric_for_best_model "eval_f1" \
--push_to_hub \
--push_to_hub°model_id layoutlmv3-finetuned-funsd
```
👀 The resulting model can be found here: https://huggingface.co/nielsr/layoutlmv3-finetuned-funsd. By specifying the `push_to_hub` flag, the model gets uploaded automatically to the hub (regularly), together with a model card, which includes metrics such as precision, recall and F1. Note that you can easily update the model card, as it's just a README file of the respective repo on the hub.
There's also the "Training metrics" [tab](https://huggingface.co/nielsr/layoutlmv3-finetuned-funsd/tensorboard), which shows Tensorboard logs over the course of training. Pretty neat, huh?
## Fine-tuning on CORD
Fine-tuning LayoutLMv3 for token classification on [CORD](https://github.com/clovaai/cord) can be done as follows:
```bash
python run_funsd_cord.py \
--model_name_or_path microsoft/layoutlmv3-base \
--dataset_name cord \
--output_dir layoutlmv3-test \
--do_train \
--do_eval \
--max_steps 1000 \
--evaluation_strategy steps \
--eval_steps 100 \
--learning_rate 5e-5 \
--load_best_model_at_end \
--metric_for_best_model "eval_f1" \
--push_to_hub \
--push_to_hub°model_id layoutlmv3-finetuned-cord
```
👀 The resulting model can be found here: https://huggingface.co/nielsr/layoutlmv3-finetuned-cord. Note that a model card gets generated automatically in case you specify the `push_to_hub` flag. | transformers/examples/research_projects/layoutlmv3/README.md/0 | {
"file_path": "transformers/examples/research_projects/layoutlmv3/README.md",
"repo_id": "transformers",
"token_count": 969
} | 291 |
"""
coding=utf-8
Copyright 2018, Antonio Mendoza Hao Tan, Mohit Bansal, Huggingface team :)
Adapted From Facebook Inc, Detectron2
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.import copy
"""
import copy
import fnmatch
import json
import os
import pickle as pkl
import shutil
import sys
import tarfile
import tempfile
from collections import OrderedDict
from contextlib import contextmanager
from functools import partial
from io import BytesIO
from pathlib import Path
from urllib.parse import urlparse
from zipfile import ZipFile, is_zipfile
import cv2
import numpy as np
import requests
import wget
from filelock import FileLock
from huggingface_hub.utils import insecure_hashlib
from PIL import Image
from tqdm.auto import tqdm
from yaml import Loader, dump, load
try:
import torch
_torch_available = True
except ImportError:
_torch_available = False
try:
from torch.hub import _get_torch_home
torch_cache_home = _get_torch_home()
except ImportError:
torch_cache_home = os.path.expanduser(
os.getenv("TORCH_HOME", os.path.join(os.getenv("XDG_CACHE_HOME", "~/.cache"), "torch"))
)
default_cache_path = os.path.join(torch_cache_home, "transformers")
CLOUDFRONT_DISTRIB_PREFIX = "https://cdn.huggingface.co"
S3_BUCKET_PREFIX = "https://s3.amazonaws.com/models.huggingface.co/bert"
PATH = "/".join(str(Path(__file__).resolve()).split("/")[:-1])
CONFIG = os.path.join(PATH, "config.yaml")
ATTRIBUTES = os.path.join(PATH, "attributes.txt")
OBJECTS = os.path.join(PATH, "objects.txt")
PYTORCH_PRETRAINED_BERT_CACHE = os.getenv("PYTORCH_PRETRAINED_BERT_CACHE", default_cache_path)
PYTORCH_TRANSFORMERS_CACHE = os.getenv("PYTORCH_TRANSFORMERS_CACHE", PYTORCH_PRETRAINED_BERT_CACHE)
TRANSFORMERS_CACHE = os.getenv("TRANSFORMERS_CACHE", PYTORCH_TRANSFORMERS_CACHE)
WEIGHTS_NAME = "pytorch_model.bin"
CONFIG_NAME = "config.yaml"
def load_labels(objs=OBJECTS, attrs=ATTRIBUTES):
vg_classes = []
with open(objs) as f:
for object in f.readlines():
vg_classes.append(object.split(",")[0].lower().strip())
vg_attrs = []
with open(attrs) as f:
for object in f.readlines():
vg_attrs.append(object.split(",")[0].lower().strip())
return vg_classes, vg_attrs
def load_checkpoint(ckp):
r = OrderedDict()
with open(ckp, "rb") as f:
ckp = pkl.load(f)["model"]
for k in copy.deepcopy(list(ckp.keys())):
v = ckp.pop(k)
if isinstance(v, np.ndarray):
v = torch.tensor(v)
else:
assert isinstance(v, torch.tensor), type(v)
r[k] = v
return r
class Config:
_pointer = {}
def __init__(self, dictionary: dict, name: str = "root", level=0):
self._name = name
self._level = level
d = {}
for k, v in dictionary.items():
if v is None:
raise ValueError()
k = copy.deepcopy(k)
v = copy.deepcopy(v)
if isinstance(v, dict):
v = Config(v, name=k, level=level + 1)
d[k] = v
setattr(self, k, v)
self._pointer = d
def __repr__(self):
return str(list((self._pointer.keys())))
def __setattr__(self, key, val):
self.__dict__[key] = val
self.__dict__[key.upper()] = val
levels = key.split(".")
last_level = len(levels) - 1
pointer = self._pointer
if len(levels) > 1:
for i, l in enumerate(levels):
if hasattr(self, l) and isinstance(getattr(self, l), Config):
setattr(getattr(self, l), ".".join(levels[i:]), val)
if l == last_level:
pointer[l] = val
else:
pointer = pointer[l]
def to_dict(self):
return self._pointer
def dump_yaml(self, data, file_name):
with open(f"{file_name}", "w") as stream:
dump(data, stream)
def dump_json(self, data, file_name):
with open(f"{file_name}", "w") as stream:
json.dump(data, stream)
@staticmethod
def load_yaml(config):
with open(config) as stream:
data = load(stream, Loader=Loader)
return data
def __str__(self):
t = " "
if self._name != "root":
r = f"{t * (self._level-1)}{self._name}:\n"
else:
r = ""
level = self._level
for i, (k, v) in enumerate(self._pointer.items()):
if isinstance(v, Config):
r += f"{t * (self._level)}{v}\n"
self._level += 1
else:
r += f"{t * (self._level)}{k}: {v} ({type(v).__name__})\n"
self._level = level
return r[:-1]
@classmethod
def from_pretrained(cls, pretrained_model_name_or_path: str, **kwargs):
config_dict, kwargs = cls.get_config_dict(pretrained_model_name_or_path, **kwargs)
return cls(config_dict)
@classmethod
def get_config_dict(cls, pretrained_model_name_or_path: str, **kwargs):
cache_dir = kwargs.pop("cache_dir", None)
force_download = kwargs.pop("force_download", False)
resume_download = kwargs.pop("resume_download", False)
proxies = kwargs.pop("proxies", None)
local_files_only = kwargs.pop("local_files_only", False)
if os.path.isdir(pretrained_model_name_or_path):
config_file = os.path.join(pretrained_model_name_or_path, CONFIG_NAME)
elif os.path.isfile(pretrained_model_name_or_path) or is_remote_url(pretrained_model_name_or_path):
config_file = pretrained_model_name_or_path
else:
config_file = hf_bucket_url(pretrained_model_name_or_path, filename=CONFIG_NAME, use_cdn=False)
try:
# Load from URL or cache if already cached
resolved_config_file = cached_path(
config_file,
cache_dir=cache_dir,
force_download=force_download,
proxies=proxies,
resume_download=resume_download,
local_files_only=local_files_only,
)
# Load config dict
if resolved_config_file is None:
raise EnvironmentError
config_file = Config.load_yaml(resolved_config_file)
except EnvironmentError:
msg = "Can't load config for"
raise EnvironmentError(msg)
if resolved_config_file == config_file:
print("loading configuration file from path")
else:
print("loading configuration file cache")
return Config.load_yaml(resolved_config_file), kwargs
# quick compare tensors
def compare(in_tensor):
out_tensor = torch.load("dump.pt", map_location=in_tensor.device)
n1 = in_tensor.numpy()
n2 = out_tensor.numpy()[0]
print(n1.shape, n1[0, 0, :5])
print(n2.shape, n2[0, 0, :5])
assert np.allclose(n1, n2, rtol=0.01, atol=0.1), (
f"{sum([1 for x in np.isclose(n1, n2, rtol=0.01, atol=0.1).flatten() if x is False])/len(n1.flatten())*100:.4f} %"
" element-wise mismatch"
)
raise Exception("tensors are all good")
# Hugging face functions below
def is_remote_url(url_or_filename):
parsed = urlparse(url_or_filename)
return parsed.scheme in ("http", "https")
def hf_bucket_url(model_id: str, filename: str, use_cdn=True) -> str:
endpoint = CLOUDFRONT_DISTRIB_PREFIX if use_cdn else S3_BUCKET_PREFIX
legacy_format = "/" not in model_id
if legacy_format:
return f"{endpoint}/{model_id}-{filename}"
else:
return f"{endpoint}/{model_id}/{filename}"
def http_get(
url,
temp_file,
proxies=None,
resume_size=0,
user_agent=None,
):
ua = "python/{}".format(sys.version.split()[0])
if _torch_available:
ua += "; torch/{}".format(torch.__version__)
if isinstance(user_agent, dict):
ua += "; " + "; ".join("{}/{}".format(k, v) for k, v in user_agent.items())
elif isinstance(user_agent, str):
ua += "; " + user_agent
headers = {"user-agent": ua}
if resume_size > 0:
headers["Range"] = "bytes=%d-" % (resume_size,)
response = requests.get(url, stream=True, proxies=proxies, headers=headers)
if response.status_code == 416: # Range not satisfiable
return
content_length = response.headers.get("Content-Length")
total = resume_size + int(content_length) if content_length is not None else None
progress = tqdm(
unit="B",
unit_scale=True,
total=total,
initial=resume_size,
desc="Downloading",
)
for chunk in response.iter_content(chunk_size=1024):
if chunk: # filter out keep-alive new chunks
progress.update(len(chunk))
temp_file.write(chunk)
progress.close()
def get_from_cache(
url,
cache_dir=None,
force_download=False,
proxies=None,
etag_timeout=10,
resume_download=False,
user_agent=None,
local_files_only=False,
):
if cache_dir is None:
cache_dir = TRANSFORMERS_CACHE
if isinstance(cache_dir, Path):
cache_dir = str(cache_dir)
os.makedirs(cache_dir, exist_ok=True)
etag = None
if not local_files_only:
try:
response = requests.head(url, allow_redirects=True, proxies=proxies, timeout=etag_timeout)
if response.status_code == 200:
etag = response.headers.get("ETag")
except (EnvironmentError, requests.exceptions.Timeout):
# etag is already None
pass
filename = url_to_filename(url, etag)
# get cache path to put the file
cache_path = os.path.join(cache_dir, filename)
# etag is None = we don't have a connection, or url doesn't exist, or is otherwise inaccessible.
# try to get the last downloaded one
if etag is None:
if os.path.exists(cache_path):
return cache_path
else:
matching_files = [
file
for file in fnmatch.filter(os.listdir(cache_dir), filename + ".*")
if not file.endswith(".json") and not file.endswith(".lock")
]
if len(matching_files) > 0:
return os.path.join(cache_dir, matching_files[-1])
else:
# If files cannot be found and local_files_only=True,
# the models might've been found if local_files_only=False
# Notify the user about that
if local_files_only:
raise ValueError(
"Cannot find the requested files in the cached path and outgoing traffic has been"
" disabled. To enable model look-ups and downloads online, set 'local_files_only'"
" to False."
)
return None
# From now on, etag is not None.
if os.path.exists(cache_path) and not force_download:
return cache_path
# Prevent parallel downloads of the same file with a lock.
lock_path = cache_path + ".lock"
with FileLock(lock_path):
# If the download just completed while the lock was activated.
if os.path.exists(cache_path) and not force_download:
# Even if returning early like here, the lock will be released.
return cache_path
if resume_download:
incomplete_path = cache_path + ".incomplete"
@contextmanager
def _resumable_file_manager():
with open(incomplete_path, "a+b") as f:
yield f
temp_file_manager = _resumable_file_manager
if os.path.exists(incomplete_path):
resume_size = os.stat(incomplete_path).st_size
else:
resume_size = 0
else:
temp_file_manager = partial(tempfile.NamedTemporaryFile, dir=cache_dir, delete=False)
resume_size = 0
# Download to temporary file, then copy to cache dir once finished.
# Otherwise you get corrupt cache entries if the download gets interrupted.
with temp_file_manager() as temp_file:
print(
"%s not found in cache or force_download set to True, downloading to %s",
url,
temp_file.name,
)
http_get(
url,
temp_file,
proxies=proxies,
resume_size=resume_size,
user_agent=user_agent,
)
os.replace(temp_file.name, cache_path)
meta = {"url": url, "etag": etag}
meta_path = cache_path + ".json"
with open(meta_path, "w") as meta_file:
json.dump(meta, meta_file)
return cache_path
def url_to_filename(url, etag=None):
url_bytes = url.encode("utf-8")
url_hash = insecure_hashlib.sha256(url_bytes)
filename = url_hash.hexdigest()
if etag:
etag_bytes = etag.encode("utf-8")
etag_hash = insecure_hashlib.sha256(etag_bytes)
filename += "." + etag_hash.hexdigest()
if url.endswith(".h5"):
filename += ".h5"
return filename
def cached_path(
url_or_filename,
cache_dir=None,
force_download=False,
proxies=None,
resume_download=False,
user_agent=None,
extract_compressed_file=False,
force_extract=False,
local_files_only=False,
):
if cache_dir is None:
cache_dir = TRANSFORMERS_CACHE
if isinstance(url_or_filename, Path):
url_or_filename = str(url_or_filename)
if isinstance(cache_dir, Path):
cache_dir = str(cache_dir)
if is_remote_url(url_or_filename):
# URL, so get it from the cache (downloading if necessary)
output_path = get_from_cache(
url_or_filename,
cache_dir=cache_dir,
force_download=force_download,
proxies=proxies,
resume_download=resume_download,
user_agent=user_agent,
local_files_only=local_files_only,
)
elif os.path.exists(url_or_filename):
# File, and it exists.
output_path = url_or_filename
elif urlparse(url_or_filename).scheme == "":
# File, but it doesn't exist.
raise EnvironmentError("file {} not found".format(url_or_filename))
else:
# Something unknown
raise ValueError("unable to parse {} as a URL or as a local path".format(url_or_filename))
if extract_compressed_file:
if not is_zipfile(output_path) and not tarfile.is_tarfile(output_path):
return output_path
# Path where we extract compressed archives
# We avoid '.' in dir name and add "-extracted" at the end: "./model.zip" => "./model-zip-extracted/"
output_dir, output_file = os.path.split(output_path)
output_extract_dir_name = output_file.replace(".", "-") + "-extracted"
output_path_extracted = os.path.join(output_dir, output_extract_dir_name)
if os.path.isdir(output_path_extracted) and os.listdir(output_path_extracted) and not force_extract:
return output_path_extracted
# Prevent parallel extractions
lock_path = output_path + ".lock"
with FileLock(lock_path):
shutil.rmtree(output_path_extracted, ignore_errors=True)
os.makedirs(output_path_extracted)
if is_zipfile(output_path):
with ZipFile(output_path, "r") as zip_file:
zip_file.extractall(output_path_extracted)
zip_file.close()
elif tarfile.is_tarfile(output_path):
tar_file = tarfile.open(output_path)
tar_file.extractall(output_path_extracted)
tar_file.close()
else:
raise EnvironmentError("Archive format of {} could not be identified".format(output_path))
return output_path_extracted
return output_path
def get_data(query, delim=","):
assert isinstance(query, str)
if os.path.isfile(query):
with open(query) as f:
data = eval(f.read())
else:
req = requests.get(query)
try:
data = requests.json()
except Exception:
data = req.content.decode()
assert data is not None, "could not connect"
try:
data = eval(data)
except Exception:
data = data.split("\n")
req.close()
return data
def get_image_from_url(url):
response = requests.get(url)
img = np.array(Image.open(BytesIO(response.content)))
return img
# to load legacy frcnn checkpoint from detectron
def load_frcnn_pkl_from_url(url):
fn = url.split("/")[-1]
if fn not in os.listdir(os.getcwd()):
wget.download(url)
with open(fn, "rb") as stream:
weights = pkl.load(stream)
model = weights.pop("model")
new = {}
for k, v in model.items():
new[k] = torch.from_numpy(v)
if "running_var" in k:
zero = torch.tensor([0])
k2 = k.replace("running_var", "num_batches_tracked")
new[k2] = zero
return new
def get_demo_path():
print(f"{os.path.abspath(os.path.join(PATH, os.pardir))}/demo.ipynb")
def img_tensorize(im, input_format="RGB"):
assert isinstance(im, str)
if os.path.isfile(im):
img = cv2.imread(im)
else:
img = get_image_from_url(im)
assert img is not None, f"could not connect to: {im}"
img = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)
if input_format == "RGB":
img = img[:, :, ::-1]
return img
def chunk(images, batch=1):
return (images[i : i + batch] for i in range(0, len(images), batch))
| transformers/examples/research_projects/lxmert/utils.py/0 | {
"file_path": "transformers/examples/research_projects/lxmert/utils.py",
"repo_id": "transformers",
"token_count": 8356
} | 292 |
from .binarizer import MagnitudeBinarizer, ThresholdBinarizer, TopKBinarizer
from .masked_nn import MaskedLinear
| transformers/examples/research_projects/movement-pruning/emmental/modules/__init__.py/0 | {
"file_path": "transformers/examples/research_projects/movement-pruning/emmental/modules/__init__.py",
"repo_id": "transformers",
"token_count": 35
} | 293 |
# End-to-End finetuning of RAG (including DPR retriever) for Question Answering.
This finetuning script is actively maintained by [Shamane Siri](https://github.com/shamanez). Feel free to ask questions on the [Forum](https://discuss.huggingface.co/) or post an issue on [GitHub](https://github.com/huggingface/transformers/issues/new/choose) and tag @shamanez.
Others that helped out: Patrick von Platen (@patrickvonplaten), Quentin Lhoest (@lhoestq), and Rivindu Weerasekera (@rivinduw)
The original RAG implementation is able to train the question encoder and generator end-to-end.
This extension enables complete end-to-end training of RAG including the context encoder in the retriever component.
Please read the [accompanying blog post](https://shamanesiri.medium.com/how-to-finetune-the-entire-rag-architecture-including-dpr-retriever-4b4385322552) for details on this implementation.
The original RAG code has also been modified to work with the latest versions of pytorch lightning (version 1.2.10) and RAY (version 1.3.0). All other implementation details remain the same as the [original RAG code](https://github.com/huggingface/transformers/tree/main/examples/research_projects/rag).
Read more about RAG at https://arxiv.org/abs/2005.11401.
This code can be modified to experiment with other research on retrival augmented models which include training of the retriever (e.g. [REALM](https://arxiv.org/abs/2002.08909) and [MARGE](https://arxiv.org/abs/2006.15020)).
To start training, use the bash script (finetune_rag_ray_end2end.sh) in this folder. This script also includes descriptions on each command-line argument used.
# Latest Update
⚠️ Updated the rag-end2end-retriever to be compatible with PL==1.6.4 and RAY==1.13.0 (latest versions to the date 2022-June-11)
# Note
⚠️ This project should be run with pytorch-lightning==1.3.1 which has a potential security vulnerability
# Testing
The following two bash scripts can be used to quickly test the implementation.
1. sh ./test_run/test_finetune.sh script
- Tests the full end-to-end fine-tuning ability with a dummy knowlendge-base and dummy training dataset (check test_dir directory).
- Users can replace the dummy dataset and knowledge-base with their own to do their own finetuning.
- Please read the comments in the test_finetune.sh file.
2. sh ./test_run/test_rag_new_features.sh
- Tests the newly added functions (set_context_encoder and set_context_encoder_tokenizer) related to modeling rag.
- This is sufficient to check the model's ability to use the set functions correctly.
# Comparison of end2end RAG (including DPR finetuning) VS original-RAG
We conducted a simple experiment to investigate the effectiveness of this end2end training extension using the SQuAD dataset. Please execute the following steps to reproduce the results.
- Create a knowledge-base using all the context passages in the SQuAD dataset with their respective titles.
- Use the question-answer pairs as training data.
- Train the system for 10 epochs.
- Test the Exact Match (EM) score with the SQuAD dataset's validation set.
- Training dataset, the knowledge-base, and hyperparameters used in experiments can be accessed from [here](https://drive.google.com/drive/folders/1qyzV-PaEARWvaU_jjpnU_NUS3U_dSjtG?usp=sharing).
# Results
- We train both models for 10 epochs.
| Model Type | EM-Score|
| --------------------| --------|
| RAG-original | 28.12 |
| RAG-end2end with DPR| 40.02 |
| transformers/examples/research_projects/rag-end2end-retriever/README.md/0 | {
"file_path": "transformers/examples/research_projects/rag-end2end-retriever/README.md",
"repo_id": "transformers",
"token_count": 1044
} | 294 |
# Add parent directory to python path to access lightning_base.py
export PYTHONPATH="../":"${PYTHONPATH}"
#creates the custom knowlegebase
python use_own_knowledge_dataset.py
# Start a single-node Ray cluster.
ray start --head
# A sample finetuning run, you need to specify data_dir, output_dir and model_name_or_path
# run ./examples/rag/finetune_rag_ray.sh --help to see all the possible options
python finetune_rag.py \
--model_name_or_path facebook/rag-token-base \
--model_type rag_token \
--fp16 \
--gpus 2 \
--profile \
--do_train \
--end2end \
--do_predict \
--n_val -1 \
--train_batch_size 1 \
--eval_batch_size 1 \
--max_source_length 128 \
--max_target_length 25 \
--val_max_target_length 25 \
--test_max_target_length 25 \
--label_smoothing 0.1 \
--dropout 0.1 \
--attention_dropout 0.1 \
--weight_decay 0.001 \
--adam_epsilon 1e-08 \
--max_grad_norm 0.1 \
--lr_scheduler polynomial \
--learning_rate 3e-05 \
--num_train_epochs 10 \
--warmup_steps 500 \
--gradient_accumulation_steps 1 \
--distributed_retriever ray \
--num_retrieval_workers 4 \
--index_name custom \
--context_encoder_name facebook/dpr-ctx_encoder-multiset-base \
--index_gpus 2 \
--gpu_order [2,3,4,5,6,7,8,9,0,1] \
--indexing_freq 5
# Stop the Ray cluster.
ray stop
#CUDA_VISIBLE_DEVICES=2,3,4,5,6,7,8,9,0,1 sh ./test_run/test_finetune.sh
#Make sure --gpu_order is same. | transformers/examples/research_projects/rag-end2end-retriever/test_run/test_finetune.sh/0 | {
"file_path": "transformers/examples/research_projects/rag-end2end-retriever/test_run/test_finetune.sh",
"repo_id": "transformers",
"token_count": 651
} | 295 |
"""
This script reads DPR retriever training data and parses each datapoint. We save a line per datapoint.
Each line consists of the query followed by a tab-separated list of Wikipedia page titles constituting
positive contexts for a given query.
"""
import argparse
import json
from tqdm import tqdm
def main():
parser = argparse.ArgumentParser()
# Required parameters
parser.add_argument(
"--src_path",
type=str,
default="biencoder-nq-dev.json",
help="Path to raw DPR training data",
)
parser.add_argument(
"--evaluation_set",
type=str,
help="where to store parsed evaluation_set file",
)
parser.add_argument(
"--gold_data_path",
type=str,
help="where to store parsed gold_data_path file",
)
args = parser.parse_args()
with open(args.src_path, "r") as src_file, open(args.evaluation_set, "w") as eval_file, open(
args.gold_data_path, "w"
) as gold_file:
dpr_records = json.load(src_file)
for dpr_record in tqdm(dpr_records):
question = dpr_record["question"]
contexts = [context["title"] for context in dpr_record["positive_ctxs"]]
eval_file.write(question + "\n")
gold_file.write("\t".join(contexts) + "\n")
if __name__ == "__main__":
main()
| transformers/examples/research_projects/rag/parse_dpr_relevance_data.py/0 | {
"file_path": "transformers/examples/research_projects/rag/parse_dpr_relevance_data.py",
"repo_id": "transformers",
"token_count": 559
} | 296 |
#!/usr/bin/env python
import argparse
import os
import sys
from unittest.mock import patch
import pytorch_lightning as pl
import timeout_decorator
import torch
from distillation import SummarizationDistiller, distill_main
from finetune import SummarizationModule, main
from transformers import MarianMTModel
from transformers.file_utils import cached_path
from transformers.testing_utils import TestCasePlus, require_torch_gpu, slow
from utils import load_json
MARIAN_MODEL = "sshleifer/mar_enro_6_3_student"
class TestMbartCc25Enro(TestCasePlus):
def setUp(self):
super().setUp()
data_cached = cached_path(
"https://cdn-datasets.huggingface.co/translation/wmt_en_ro-tr40k-va0.5k-te0.5k.tar.gz",
extract_compressed_file=True,
)
self.data_dir = f"{data_cached}/wmt_en_ro-tr40k-va0.5k-te0.5k"
@slow
@require_torch_gpu
def test_model_download(self):
"""This warms up the cache so that we can time the next test without including download time, which varies between machines."""
MarianMTModel.from_pretrained(MARIAN_MODEL)
# @timeout_decorator.timeout(1200)
@slow
@require_torch_gpu
def test_train_mbart_cc25_enro_script(self):
env_vars_to_replace = {
"$MAX_LEN": 64,
"$BS": 64,
"$GAS": 1,
"$ENRO_DIR": self.data_dir,
"facebook/mbart-large-cc25": MARIAN_MODEL,
# "val_check_interval=0.25": "val_check_interval=1.0",
"--learning_rate=3e-5": "--learning_rate 3e-4",
"--num_train_epochs 6": "--num_train_epochs 1",
}
# Clean up bash script
bash_script = (self.test_file_dir / "train_mbart_cc25_enro.sh").open().read().split("finetune.py")[1].strip()
bash_script = bash_script.replace("\\\n", "").strip().replace('"$@"', "")
for k, v in env_vars_to_replace.items():
bash_script = bash_script.replace(k, str(v))
output_dir = self.get_auto_remove_tmp_dir()
# bash_script = bash_script.replace("--fp16 ", "")
args = f"""
--output_dir {output_dir}
--tokenizer_name Helsinki-NLP/opus-mt-en-ro
--sortish_sampler
--do_predict
--gpus 1
--freeze_encoder
--n_train 40000
--n_val 500
--n_test 500
--fp16_opt_level O1
--num_sanity_val_steps 0
--eval_beams 2
""".split()
# XXX: args.gpus > 1 : handle multi_gpu in the future
testargs = ["finetune.py"] + bash_script.split() + args
with patch.object(sys, "argv", testargs):
parser = argparse.ArgumentParser()
parser = pl.Trainer.add_argparse_args(parser)
parser = SummarizationModule.add_model_specific_args(parser, os.getcwd())
args = parser.parse_args()
model = main(args)
# Check metrics
metrics = load_json(model.metrics_save_path)
first_step_stats = metrics["val"][0]
last_step_stats = metrics["val"][-1]
self.assertEqual(len(metrics["val"]), (args.max_epochs / args.val_check_interval))
assert isinstance(last_step_stats[f"val_avg_{model.val_metric}"], float)
self.assertGreater(last_step_stats["val_avg_gen_time"], 0.01)
# model hanging on generate. Maybe bad config was saved. (XXX: old comment/assert?)
self.assertLessEqual(last_step_stats["val_avg_gen_time"], 1.0)
# test learning requirements:
# 1. BLEU improves over the course of training by more than 2 pts
self.assertGreater(last_step_stats["val_avg_bleu"] - first_step_stats["val_avg_bleu"], 2)
# 2. BLEU finishes above 17
self.assertGreater(last_step_stats["val_avg_bleu"], 17)
# 3. test BLEU and val BLEU within ~1.1 pt.
self.assertLess(abs(metrics["val"][-1]["val_avg_bleu"] - metrics["test"][-1]["test_avg_bleu"]), 1.1)
# check lightning ckpt can be loaded and has a reasonable statedict
contents = os.listdir(output_dir)
ckpt_path = [x for x in contents if x.endswith(".ckpt")][0]
full_path = os.path.join(args.output_dir, ckpt_path)
ckpt = torch.load(full_path, map_location="cpu")
expected_key = "model.model.decoder.layers.0.encoder_attn_layer_norm.weight"
assert expected_key in ckpt["state_dict"]
assert ckpt["state_dict"]["model.model.decoder.layers.0.encoder_attn_layer_norm.weight"].dtype == torch.float32
# TODO: turn on args.do_predict when PL bug fixed.
if args.do_predict:
contents = {os.path.basename(p) for p in contents}
assert "test_generations.txt" in contents
assert "test_results.txt" in contents
# assert len(metrics["val"]) == desired_n_evals
assert len(metrics["test"]) == 1
class TestDistilMarianNoTeacher(TestCasePlus):
@timeout_decorator.timeout(600)
@slow
@require_torch_gpu
def test_opus_mt_distill_script(self):
data_dir = f"{self.test_file_dir_str}/test_data/wmt_en_ro"
env_vars_to_replace = {
"--fp16_opt_level=O1": "",
"$MAX_LEN": 128,
"$BS": 16,
"$GAS": 1,
"$ENRO_DIR": data_dir,
"$m": "sshleifer/student_marian_en_ro_6_1",
"val_check_interval=0.25": "val_check_interval=1.0",
}
# Clean up bash script
bash_script = (
(self.test_file_dir / "distil_marian_no_teacher.sh").open().read().split("distillation.py")[1].strip()
)
bash_script = bash_script.replace("\\\n", "").strip().replace('"$@"', "")
bash_script = bash_script.replace("--fp16 ", " ")
for k, v in env_vars_to_replace.items():
bash_script = bash_script.replace(k, str(v))
output_dir = self.get_auto_remove_tmp_dir()
bash_script = bash_script.replace("--fp16", "")
epochs = 6
testargs = (
["distillation.py"]
+ bash_script.split()
+ [
f"--output_dir={output_dir}",
"--gpus=1",
"--learning_rate=1e-3",
f"--num_train_epochs={epochs}",
"--warmup_steps=10",
"--val_check_interval=1.0",
"--do_predict",
]
)
with patch.object(sys, "argv", testargs):
parser = argparse.ArgumentParser()
parser = pl.Trainer.add_argparse_args(parser)
parser = SummarizationDistiller.add_model_specific_args(parser, os.getcwd())
args = parser.parse_args()
# assert args.gpus == gpus THIS BREAKS for multi_gpu
model = distill_main(args)
# Check metrics
metrics = load_json(model.metrics_save_path)
first_step_stats = metrics["val"][0]
last_step_stats = metrics["val"][-1]
assert len(metrics["val"]) >= (args.max_epochs / args.val_check_interval) # +1 accounts for val_sanity_check
assert last_step_stats["val_avg_gen_time"] >= 0.01
assert first_step_stats["val_avg_bleu"] < last_step_stats["val_avg_bleu"] # model learned nothing
assert 1.0 >= last_step_stats["val_avg_gen_time"] # model hanging on generate. Maybe bad config was saved.
assert isinstance(last_step_stats[f"val_avg_{model.val_metric}"], float)
# check lightning ckpt can be loaded and has a reasonable statedict
contents = os.listdir(output_dir)
ckpt_path = [x for x in contents if x.endswith(".ckpt")][0]
full_path = os.path.join(args.output_dir, ckpt_path)
ckpt = torch.load(full_path, map_location="cpu")
expected_key = "model.model.decoder.layers.0.encoder_attn_layer_norm.weight"
assert expected_key in ckpt["state_dict"]
assert ckpt["state_dict"]["model.model.decoder.layers.0.encoder_attn_layer_norm.weight"].dtype == torch.float32
# TODO: turn on args.do_predict when PL bug fixed.
if args.do_predict:
contents = {os.path.basename(p) for p in contents}
assert "test_generations.txt" in contents
assert "test_results.txt" in contents
# assert len(metrics["val"]) == desired_n_evals
assert len(metrics["test"]) == 1
| transformers/examples/research_projects/seq2seq-distillation/_test_bash_script.py/0 | {
"file_path": "transformers/examples/research_projects/seq2seq-distillation/_test_bash_script.py",
"repo_id": "transformers",
"token_count": 3934
} | 297 |
import warnings
from pathlib import Path
from typing import List, Tuple, Union
import fire
from torch import nn
from transformers import AutoModelForSeq2SeqLM, AutoTokenizer, PreTrainedModel
from transformers.utils import logging
logger = logging.get_logger(__name__)
def copy_layers(src_layers: nn.ModuleList, dest_layers: nn.ModuleList, layers_to_copy: List[int]) -> None:
layers_to_copy = nn.ModuleList([src_layers[i] for i in layers_to_copy])
assert len(dest_layers) == len(layers_to_copy), f"{len(dest_layers)} != {len(layers_to_copy)}"
dest_layers.load_state_dict(layers_to_copy.state_dict())
LAYERS_TO_COPY = {
# maps num layers in teacher -> num_layers in student -> which teacher layers to copy.
# 12: bart, 16: pegasus, 6: marian/Helsinki-NLP
12: {
1: [0], # This says that if the teacher has 12 layers and the student has 1, copy layer 0 of the teacher
2: [0, 6],
3: [0, 6, 11],
4: [0, 4, 8, 11],
6: [0, 2, 4, 7, 9, 11],
9: [0, 1, 2, 4, 5, 7, 9, 10, 11],
12: list(range(12)),
},
16: { # maps num layers in student -> which teacher layers to copy
1: [0],
2: [0, 15],
3: [0, 8, 15],
4: [0, 5, 10, 15],
6: [0, 3, 6, 9, 12, 15],
8: [0, 2, 4, 6, 8, 10, 12, 15],
9: [0, 1, 3, 5, 7, 9, 11, 13, 15],
12: [0, 1, 2, 3, 4, 5, 6, 7, 9, 11, 13, 15],
16: list(range(16)),
},
6: {1: [0], 2: [0, 5], 3: [0, 2, 5], 4: [0, 1, 3, 5], 6: list(range(6))},
}
LAYERS_TO_SUPERVISE = {
# maps num layers in student -> which teacher layers to copy.
6: {1: [5], 2: [3, 5], 3: [1, 4, 5], 4: [1, 2, 4, 5]},
12: {1: [11], 2: [5, 11], 3: [3, 7, 11], 6: [1, 3, 5, 8, 10, 11]},
16: {1: [15], 4: [4, 9, 12, 15], 8: [1, 3, 5, 7, 9, 11, 13, 15]},
}
def pick_layers_to_copy(n_student, n_teacher):
try:
val = LAYERS_TO_COPY[n_teacher][n_student]
return val
except KeyError:
if n_student != n_teacher:
warnings.warn(
f"no hardcoded layers to copy for teacher {n_teacher} -> student {n_student}, defaulting to first"
f" {n_student}"
)
return list(range(n_student))
def get_layers_to_supervise(n_student, n_teacher) -> List[int]:
"""Used or the --supervise_forward kwarg"""
if n_student > n_teacher:
raise ValueError(f"Cannot perform intermediate supervision for student {n_student} > teacher {n_teacher}")
elif n_teacher == n_student:
return list(range(n_teacher))
elif n_student == 1:
return [n_teacher - 1]
else:
return LAYERS_TO_SUPERVISE[n_teacher][n_student]
def create_student_by_copying_alternating_layers(
teacher: Union[str, PreTrainedModel],
save_path: Union[str, Path] = "student",
e: Union[int, None] = None,
d: Union[int, None] = None,
copy_first_teacher_layers=False,
e_layers_to_copy=None,
d_layers_to_copy=None,
**extra_config_kwargs,
) -> Tuple[PreTrainedModel, List[int], List[int]]:
"""Make a student by copying alternating layers from a teacher, save it to save_path.
Args:
teacher: str or PreTrainedModel if str, this will call AutoModelForSeq2SeqLM.from_pretrained(teacher) before
copying layers
save_path: where to save the student, defaults to student directory.
e: how many Encoder layers should the student have, default is fully copy of teacher
d: how many Decoder layers should the student have, default is fully copy of teacher
copy_first_teacher_layers: [bool] dont copy alternating layers, just the first e/d.
**extra_config_kwargs: extra kwargs to pass to the student, by default the teacher config is used.
Returns:
student: new, smaller model. (Also saves it to save_path)
e_layers_to_copy: list of which teacher encoder layers were used
d_layers_to_copy: list of which teacher decoder layers were used
"""
_msg = "encoder_layers and decoder_layers cannot be both None-- you would just have an identical teacher."
assert (e is not None) or (d is not None), _msg
if isinstance(teacher, str):
AutoTokenizer.from_pretrained(teacher).save_pretrained(save_path) # purely for convenience
teacher = AutoModelForSeq2SeqLM.from_pretrained(teacher).eval()
else:
assert isinstance(teacher, PreTrainedModel), f"teacher must be a model or string got type {type(teacher)}"
init_kwargs = teacher.config.to_diff_dict()
try:
teacher_e, teacher_d = teacher.config.encoder_layers, teacher.config.decoder_layers
if e is None:
e = teacher_e
if d is None:
d = teacher_d
init_kwargs.update({"encoder_layers": e, "decoder_layers": d})
except AttributeError: # T5
if hasattr(teacher.config, "num_encoder_layers"):
teacher_e, teacher_d = teacher.config.num_encoder_layers, teacher.config.num_decoder_layers
else:
teacher_e, teacher_d = teacher.config.num_layers, teacher.config.num_decoder_layers
if e is None:
e = teacher_e
if d is None:
d = teacher_d
if hasattr(teacher.config, "num_encoder_layers"):
init_kwargs.update({"num_encoder_layers": e, "num_decoder_layers": d})
else:
init_kwargs.update({"num_layers": e, "num_decoder_layers": d})
# Kwargs to instantiate student: teacher kwargs with updated layer numbers + **extra_config_kwargs
init_kwargs.update(extra_config_kwargs)
# Copy weights
student_cfg = teacher.config_class(**init_kwargs)
student = AutoModelForSeq2SeqLM.from_config(student_cfg)
# Start by copying the full teacher state dict this will copy the first N teacher layers to the student.
info = student.load_state_dict(teacher.state_dict(), strict=False)
assert info.missing_keys == [], info.missing_keys # every student key should have a teacher keys.
if copy_first_teacher_layers: # Our copying is done. We just log and save
e_layers_to_copy, d_layers_to_copy = list(range(e)), list(range(d))
logger.info(
f"Copied encoder layers {e_layers_to_copy} and decoder layers {d_layers_to_copy}. Saving them to"
f" {save_path}"
)
student.save_pretrained(save_path)
return student, e_layers_to_copy, d_layers_to_copy
# Decide which layers of the teacher to copy. Not exactly alternating -- we try to keep first and last layer.
if e_layers_to_copy is None:
e_layers_to_copy: List[int] = pick_layers_to_copy(e, teacher_e)
if d_layers_to_copy is None:
d_layers_to_copy: List[int] = pick_layers_to_copy(d, teacher_d)
try:
if hasattr(
teacher, "prophetnet"
): # For ProphetNet, student.model.encoder.layers is called student.prophetnet.encoder.layers
copy_layers(teacher.prophetnet.encoder.layers, student.prophetnet.encoder.layers, e_layers_to_copy)
copy_layers(teacher.prophetnet.decoder.layers, student.prophetnet.decoder.layers, d_layers_to_copy)
else:
copy_layers(teacher.model.encoder.layers, student.model.encoder.layers, e_layers_to_copy)
copy_layers(teacher.model.decoder.layers, student.model.decoder.layers, d_layers_to_copy)
except AttributeError: # For t5, student.model.encoder.layers is called student.encoder.block
copy_layers(teacher.encoder.block, student.encoder.block, e_layers_to_copy)
copy_layers(teacher.decoder.block, student.decoder.block, d_layers_to_copy)
logger.info(
f"Copied encoder layers {e_layers_to_copy} and decoder layers {d_layers_to_copy}. Saving them to {save_path}"
)
student.config.init_metadata = {
"teacher_type": teacher.config.model_type,
"copied_encoder_layers": e_layers_to_copy,
"copied_decoder_layers": d_layers_to_copy,
}
student.save_pretrained(save_path)
# Save information about copying for easier reproducibility
return student, e_layers_to_copy, d_layers_to_copy
if __name__ == "__main__":
fire.Fire(create_student_by_copying_alternating_layers)
| transformers/examples/research_projects/seq2seq-distillation/make_student.py/0 | {
"file_path": "transformers/examples/research_projects/seq2seq-distillation/make_student.py",
"repo_id": "transformers",
"token_count": 3522
} | 298 |
<jupyter_start><jupyter_code># %pip install-r requirements.txt<jupyter_output><empty_output><jupyter_text>**Note**: This demo is adapted from the LXMERT Demo present here: https://github.com/huggingface/transformers/tree/main/examples/research_projects/lxmert<jupyter_code>from IPython.display import Image, display
import PIL.Image
import io
import torch
import numpy as np
from processing_image import Preprocess
from visualizing_image import SingleImageViz
from modeling_frcnn import GeneralizedRCNN
from utils import Config
import utils
from transformers import VisualBertForQuestionAnswering, BertTokenizerFast
# URL = "https://raw.githubusercontent.com/airsplay/py-bottom-up-attention/master/demo/data/images/input.jpg"
URL = "https://vqa.cloudcv.org/media/test2014/COCO_test2014_000000262567.jpg"
OBJ_URL = "https://raw.githubusercontent.com/airsplay/py-bottom-up-attention/master/demo/data/genome/1600-400-20/objects_vocab.txt"
ATTR_URL = "https://raw.githubusercontent.com/airsplay/py-bottom-up-attention/master/demo/data/genome/1600-400-20/attributes_vocab.txt"
VQA_URL = "https://dl.fbaipublicfiles.com/pythia/data/answers_vqa.txt"
# for visualizing output
def showarray(a, fmt="jpeg"):
a = np.uint8(np.clip(a, 0, 255))
f = io.BytesIO()
PIL.Image.fromarray(a).save(f, fmt)
display(Image(data=f.getvalue()))
# load object, attribute, and answer labels
objids = utils.get_data(OBJ_URL)
attrids = utils.get_data(ATTR_URL)
vqa_answers = utils.get_data(VQA_URL)
# load models and model components
frcnn_cfg = Config.from_pretrained("unc-nlp/frcnn-vg-finetuned")
frcnn = GeneralizedRCNN.from_pretrained("unc-nlp/frcnn-vg-finetuned", config=frcnn_cfg)
image_preprocess = Preprocess(frcnn_cfg)
bert_tokenizer = BertTokenizerFast.from_pretrained("bert-base-uncased")
visualbert_vqa = VisualBertForQuestionAnswering.from_pretrained("uclanlp/visualbert-vqa")
# image viz
frcnn_visualizer = SingleImageViz(URL, id2obj=objids, id2attr=attrids)
# run frcnn
images, sizes, scales_yx = image_preprocess(URL)
output_dict = frcnn(
images,
sizes,
scales_yx=scales_yx,
padding="max_detections",
max_detections=frcnn_cfg.max_detections,
return_tensors="pt",
)
# add boxes and labels to the image
frcnn_visualizer.draw_boxes(
output_dict.get("boxes"),
output_dict.pop("obj_ids"),
output_dict.pop("obj_probs"),
output_dict.pop("attr_ids"),
output_dict.pop("attr_probs"),
)
showarray(frcnn_visualizer._get_buffer())
# test_questions_for_url1 = [
# "Where is this scene?",
# "what is the man riding?",
# "What is the man wearing?",
# "What is the color of the horse?"
# ]
test_questions_for_url2 = [
"Where is the cat?",
"What is near the disk?",
"What is the color of the table?",
"What is the color of the cat?",
"What is the shape of the monitor?",
]
# Very important that the boxes are normalized
# normalized_boxes = output_dict.get("normalized_boxes")
features = output_dict.get("roi_features")
for test_question in test_questions_for_url2:
test_question = [test_question]
inputs = bert_tokenizer(
test_question,
padding="max_length",
max_length=20,
truncation=True,
return_token_type_ids=True,
return_attention_mask=True,
add_special_tokens=True,
return_tensors="pt",
)
output_vqa = visualbert_vqa(
input_ids=inputs.input_ids,
attention_mask=inputs.attention_mask,
visual_embeds=features,
visual_attention_mask=torch.ones(features.shape[:-1]),
token_type_ids=inputs.token_type_ids,
output_attentions=False,
)
# get prediction
pred_vqa = output_vqa["logits"].argmax(-1)
print("Question:", test_question)
print("prediction from VisualBert VQA:", vqa_answers[pred_vqa])<jupyter_output>Question: ['Where is the cat?']
prediction from VisualBert VQA: outside
Question: ['What is near the disk?']
prediction from VisualBert VQA: nothing
Question: ['What is the color of the table?']
prediction from VisualBert VQA: brown
Question: ['What is the color of the cat?']
prediction from VisualBert VQA: gray
Question: ['What is the shape of the monitor?']
prediction from VisualBert VQA: square | transformers/examples/research_projects/visual_bert/demo.ipynb/0 | {
"file_path": "transformers/examples/research_projects/visual_bert/demo.ipynb",
"repo_id": "transformers",
"token_count": 1630
} | 299 |
#!/usr/bin/env python
# coding=utf-8
# Copyright 2022 The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
"""
Fine-tuning a 🤗 Transformers model for image classification.
Here is the full list of checkpoints on the hub that can be fine-tuned by this script:
https://huggingface.co/models?filter=image-classification
"""
import json
import logging
import os
import sys
import warnings
from dataclasses import dataclass, field
from typing import Optional
import evaluate
import numpy as np
import tensorflow as tf
from datasets import load_dataset
from PIL import Image
import transformers
from transformers import (
TF_MODEL_FOR_IMAGE_CLASSIFICATION_MAPPING,
AutoConfig,
AutoImageProcessor,
DefaultDataCollator,
HfArgumentParser,
PushToHubCallback,
TFAutoModelForImageClassification,
TFTrainingArguments,
create_optimizer,
set_seed,
)
from transformers.keras_callbacks import KerasMetricCallback
from transformers.modeling_tf_utils import keras
from transformers.trainer_utils import get_last_checkpoint, is_main_process
from transformers.utils import check_min_version, send_example_telemetry
from transformers.utils.versions import require_version
logger = logging.getLogger(__name__)
# Will error if the minimal version of Transformers is not installed. Remove at your own risks.
check_min_version("4.40.0.dev0")
require_version("datasets>=1.8.0", "To fix: pip install -r examples/pytorch/image-classification/requirements.txt")
MODEL_CONFIG_CLASSES = list(TF_MODEL_FOR_IMAGE_CLASSIFICATION_MAPPING.keys())
MODEL_TYPES = tuple(conf.model_type for conf in MODEL_CONFIG_CLASSES)
def pil_loader(path: str):
with open(path, "rb") as f:
im = Image.open(f)
return im.convert("RGB")
@dataclass
class DataTrainingArguments:
"""
Arguments pertaining to what data we are going to input our model for training and eval.
Using `HfArgumentParser` we can turn this class into argparse arguments to be able to specify
them on the command line.
"""
dataset_name: Optional[str] = field(
default=None,
metadata={
"help": "Name of a dataset from the hub (could be your own, possibly private dataset hosted on the hub)."
},
)
dataset_config_name: Optional[str] = field(
default=None, metadata={"help": "The configuration name of the dataset to use (via the datasets library)."}
)
train_dir: Optional[str] = field(default=None, metadata={"help": "A folder containing the training data."})
validation_dir: Optional[str] = field(default=None, metadata={"help": "A folder containing the validation data."})
train_val_split: Optional[float] = field(
default=0.15, metadata={"help": "Percent to split off of train for validation."}
)
overwrite_cache: bool = field(
default=False, metadata={"help": "Overwrite the cached training and evaluation sets"}
)
preprocessing_num_workers: Optional[int] = field(
default=None,
metadata={"help": "The number of processes to use for the preprocessing."},
)
max_train_samples: Optional[int] = field(
default=None,
metadata={
"help": (
"For debugging purposes or quicker training, truncate the number of training examples to this "
"value if set."
)
},
)
max_eval_samples: Optional[int] = field(
default=None,
metadata={
"help": (
"For debugging purposes or quicker training, truncate the number of evaluation examples to this "
"value if set."
)
},
)
max_predict_samples: Optional[int] = field(
default=None,
metadata={
"help": (
"For debugging purposes or quicker training, truncate the number of prediction examples to this "
"value if set."
)
},
)
def __post_init__(self):
if self.dataset_name is None and (self.train_dir is None and self.validation_dir is None):
raise ValueError(
"You must specify either a dataset name from the hub or a train and/or validation directory."
)
@dataclass
class ModelArguments:
"""
Arguments pertaining to which model/config/tokenizer we are going to fine-tune from.
"""
model_name_or_path: str = field(
default="google/vit-base-patch16-224-in21k",
metadata={"help": "Path to pretrained model or model identifier from huggingface.co/models"},
)
model_type: Optional[str] = field(
default=None,
metadata={"help": "If training from scratch, pass a model type from the list: " + ", ".join(MODEL_TYPES)},
)
config_name: Optional[str] = field(
default=None, metadata={"help": "Pretrained config name or path if not the same as model_name"}
)
cache_dir: Optional[str] = field(
default=None, metadata={"help": "Where do you want to store the pretrained models downloaded from s3"}
)
model_revision: str = field(
default="main",
metadata={"help": "The specific model version to use (can be a branch name, tag name or commit id)."},
)
image_processor_name: str = field(default=None, metadata={"help": "Name or path of preprocessor config."})
token: str = field(
default=None,
metadata={
"help": (
"The token to use as HTTP bearer authorization for remote files. If not specified, will use the token "
"generated when running `huggingface-cli login` (stored in `~/.huggingface`)."
)
},
)
use_auth_token: bool = field(
default=None,
metadata={
"help": "The `use_auth_token` argument is deprecated and will be removed in v4.34. Please use `token` instead."
},
)
trust_remote_code: bool = field(
default=False,
metadata={
"help": (
"Whether or not to allow for custom models defined on the Hub in their own modeling files. This option "
"should only be set to `True` for repositories you trust and in which you have read the code, as it will "
"execute code present on the Hub on your local machine."
)
},
)
ignore_mismatched_sizes: bool = field(
default=False,
metadata={"help": "Will enable to load a pretrained model whose head dimensions are different."},
)
def center_crop(image, size):
size = (size, size) if isinstance(size, int) else size
orig_height, orig_width, _ = image.shape
crop_height, crop_width = size
top = (orig_height - orig_width) // 2
left = (orig_width - crop_width) // 2
image = tf.image.crop_to_bounding_box(image, top, left, crop_height, crop_width)
return image
# Numpy and TensorFlow compatible version of PyTorch RandomResizedCrop. Code adapted from:
# https://pytorch.org/vision/main/_modules/torchvision/transforms/transforms.html#RandomResizedCrop
def random_crop(image, scale=(0.08, 1.0), ratio=(3.0 / 4.0, 4.0 / 3.0)):
height, width, _ = image.shape
area = height * width
log_ratio = np.log(ratio)
for _ in range(10):
target_area = np.random.uniform(*scale) * area
aspect_ratio = np.exp(np.random.uniform(*log_ratio))
w = int(round(np.sqrt(target_area * aspect_ratio)))
h = int(round(np.sqrt(target_area / aspect_ratio)))
if 0 < w <= width and 0 < h <= height:
i = np.random.randint(0, height - h + 1)
j = np.random.randint(0, width - w + 1)
return image[i : i + h, j : j + w, :]
# Fallback to central crop
in_ratio = float(width) / float(height)
w = width if in_ratio < min(ratio) else int(round(height * max(ratio)))
h = height if in_ratio > max(ratio) else int(round(width / min(ratio)))
i = (height - h) // 2
j = (width - w) // 2
return image[i : i + h, j : j + w, :]
def random_resized_crop(image, size, scale=(0.08, 1.0), ratio=(3.0 / 4.0, 4.0 / 3.0)):
size = (size, size) if isinstance(size, int) else size
image = random_crop(image, scale, ratio)
image = tf.image.resize(image, size)
return image
def main():
# See all possible arguments in src/transformers/training_args.py
# or by passing the --help flag to this script.
# We now keep distinct sets of args, for a cleaner separation of concerns.
parser = HfArgumentParser((ModelArguments, DataTrainingArguments, TFTrainingArguments))
if len(sys.argv) == 2 and sys.argv[1].endswith(".json"):
# If we pass only one argument to the script and it's the path to a json file,
# let's parse it to get our arguments.
model_args, data_args, training_args = parser.parse_json_file(json_file=os.path.abspath(sys.argv[1]))
else:
model_args, data_args, training_args = parser.parse_args_into_dataclasses()
if model_args.use_auth_token is not None:
warnings.warn(
"The `use_auth_token` argument is deprecated and will be removed in v4.34. Please use `token` instead.",
FutureWarning,
)
if model_args.token is not None:
raise ValueError("`token` and `use_auth_token` are both specified. Please set only the argument `token`.")
model_args.token = model_args.use_auth_token
if not (training_args.do_train or training_args.do_eval or training_args.do_predict):
exit("Must specify at least one of --do_train, --do_eval or --do_predict!")
# Sending telemetry. Tracking the example usage helps us better allocate resources to maintain them. The
# information sent is the one passed as arguments along with your Python/TensorFlow versions.
send_example_telemetry("run_image_classification", model_args, data_args, framework="tensorflow")
# Checkpoints. Find the checkpoint the use when loading the model.
checkpoint = None
if os.path.isdir(training_args.output_dir) and training_args.do_train and not training_args.overwrite_output_dir:
checkpoint = get_last_checkpoint(training_args.output_dir)
if checkpoint is None and len(os.listdir(training_args.output_dir)) > 0:
raise ValueError(
f"Output directory ({training_args.output_dir}) already exists and is not empty. "
"Use --overwrite_output_dir to overcome."
)
elif checkpoint is not None and training_args.resume_from_checkpoint is None:
logger.info(
f"Checkpoint detected, resuming training at {checkpoint}. To avoid this behavior, change "
"the `--output_dir` or add `--overwrite_output_dir` to train from scratch."
)
# Setup logging
logging.basicConfig(
format="%(asctime)s - %(levelname)s - %(name)s - %(message)s",
datefmt="%m/%d/%Y %H:%M:%S",
handlers=[logging.StreamHandler(sys.stdout)],
)
log_level = training_args.get_process_log_level()
logger.setLevel(log_level)
# Set the verbosity to info of the Transformers logger (on main process only):
if is_main_process(training_args.local_rank):
transformers.utils.logging.set_verbosity_info()
transformers.utils.logging.enable_default_handler()
transformers.utils.logging.enable_explicit_format()
logger.info(f"Training/evaluation parameters {training_args}")
# region Dataset and labels
# Set seed before initializing model.
set_seed(training_args.seed)
# Initialize our dataset and prepare it for the 'image-classification' task.
if data_args.dataset_name is not None:
dataset = load_dataset(
data_args.dataset_name,
data_args.dataset_config_name,
cache_dir=model_args.cache_dir,
task="image-classification",
token=model_args.token,
)
else:
data_files = {}
if data_args.train_dir is not None:
data_files["train"] = os.path.join(data_args.train_dir, "**")
if data_args.validation_dir is not None:
data_files["validation"] = os.path.join(data_args.validation_dir, "**")
dataset = load_dataset(
"imagefolder",
data_files=data_files,
cache_dir=model_args.cache_dir,
task="image-classification",
)
# See more about loading any type of standard or custom dataset (from files, python dict, pandas DataFrame, etc) at
# https://huggingface.co/docs/datasets/loading_datasets.
# Prepare label mappings.
# We'll include these in the model's config to get human readable labels in the Inference API.
labels = dataset["train"].features["labels"].names
label2id, id2label = {}, {}
for i, label in enumerate(labels):
label2id[label] = str(i)
id2label[str(i)] = label
# Load model image processor and configuration
config = AutoConfig.from_pretrained(
model_args.config_name or model_args.model_name_or_path,
num_labels=len(labels),
label2id=label2id,
id2label=id2label,
finetuning_task="image-classification",
cache_dir=model_args.cache_dir,
revision=model_args.model_revision,
token=model_args.token,
trust_remote_code=model_args.trust_remote_code,
)
image_processor = AutoImageProcessor.from_pretrained(
model_args.image_processor_name or model_args.model_name_or_path,
cache_dir=model_args.cache_dir,
revision=model_args.model_revision,
token=model_args.token,
trust_remote_code=model_args.trust_remote_code,
)
# If we don't have a validation split, split off a percentage of train as validation.
data_args.train_val_split = None if "validation" in dataset.keys() else data_args.train_val_split
if isinstance(data_args.train_val_split, float) and data_args.train_val_split > 0.0:
split = dataset["train"].train_test_split(data_args.train_val_split)
dataset["train"] = split["train"]
dataset["validation"] = split["test"]
# Define our data preprocessing function. It takes an image file path as input and returns
# Write a note describing the resizing behaviour.
if "shortest_edge" in image_processor.size:
# We instead set the target size as (shortest_edge, shortest_edge) to here to ensure all images are batchable.
image_size = (image_processor.size["shortest_edge"], image_processor.size["shortest_edge"])
else:
image_size = (image_processor.size["height"], image_processor.size["width"])
def _train_transforms(image):
img_size = image_size
image = keras.utils.img_to_array(image)
image = random_resized_crop(image, size=img_size)
image = tf.image.random_flip_left_right(image)
image /= 255.0
image = (image - image_processor.image_mean) / image_processor.image_std
image = tf.transpose(image, perm=[2, 0, 1])
return image
def _val_transforms(image):
image = keras.utils.img_to_array(image)
image = tf.image.resize(image, size=image_size)
# image = np.array(image) # FIXME - use tf.image function
image = center_crop(image, size=image_size)
image /= 255.0
image = (image - image_processor.image_mean) / image_processor.image_std
image = tf.transpose(image, perm=[2, 0, 1])
return image
def train_transforms(example_batch):
"""Apply _train_transforms across a batch."""
example_batch["pixel_values"] = [
_train_transforms(pil_img.convert("RGB")) for pil_img in example_batch["image"]
]
return example_batch
def val_transforms(example_batch):
"""Apply _val_transforms across a batch."""
example_batch["pixel_values"] = [_val_transforms(pil_img.convert("RGB")) for pil_img in example_batch["image"]]
return example_batch
train_dataset = None
if training_args.do_train:
if "train" not in dataset:
raise ValueError("--do_train requires a train dataset")
train_dataset = dataset["train"]
if data_args.max_train_samples is not None:
train_dataset = train_dataset.shuffle(seed=training_args.seed).select(range(data_args.max_train_samples))
train_dataset = train_dataset.map(
train_transforms,
batched=True,
num_proc=data_args.preprocessing_num_workers,
load_from_cache_file=not data_args.overwrite_cache,
)
eval_dataset = None
if training_args.do_eval:
if "validation" not in dataset:
raise ValueError("--do_eval requires a validation dataset")
eval_dataset = dataset["validation"]
if data_args.max_eval_samples is not None:
eval_dataset = eval_dataset.select(range(data_args.max_eval_samples))
# Set the validation transforms
eval_dataset = eval_dataset.map(
val_transforms,
batched=True,
num_proc=data_args.preprocessing_num_workers,
load_from_cache_file=not data_args.overwrite_cache,
)
predict_dataset = None
if training_args.do_predict:
if "test" not in dataset:
raise ValueError("--do_predict requires a test dataset")
predict_dataset = dataset["test"]
if data_args.max_predict_samples is not None:
predict_dataset = predict_dataset.select(range(data_args.max_predict_samples))
# Set the test transforms
predict_dataset = predict_dataset.map(
val_transforms,
batched=True,
num_proc=data_args.preprocessing_num_workers,
load_from_cache_file=not data_args.overwrite_cache,
)
collate_fn = DefaultDataCollator(return_tensors="np")
# Load the accuracy metric from the datasets package
metric = evaluate.load("accuracy", cache_dir=model_args.cache_dir)
# Define our compute_metrics function. It takes an `EvalPrediction` object (a namedtuple with a
# predictions and label_ids field) and has to return a dictionary string to float.
def compute_metrics(p):
"""Computes accuracy on a batch of predictions"""
logits, label_ids = p
predictions = np.argmax(logits, axis=-1)
metrics = metric.compute(predictions=predictions, references=label_ids)
return metrics
with training_args.strategy.scope():
if checkpoint is None:
model_path = model_args.model_name_or_path
else:
model_path = checkpoint
model = TFAutoModelForImageClassification.from_pretrained(
model_path,
config=config,
from_pt=bool(".bin" in model_path),
cache_dir=model_args.cache_dir,
revision=model_args.model_revision,
token=model_args.token,
trust_remote_code=model_args.trust_remote_code,
ignore_mismatched_sizes=model_args.ignore_mismatched_sizes,
)
num_replicas = training_args.strategy.num_replicas_in_sync
total_train_batch_size = training_args.per_device_train_batch_size * num_replicas
total_eval_batch_size = training_args.per_device_eval_batch_size * num_replicas
dataset_options = tf.data.Options()
dataset_options.experimental_distribute.auto_shard_policy = tf.data.experimental.AutoShardPolicy.OFF
if training_args.do_train:
num_train_steps = int(len(train_dataset) * training_args.num_train_epochs)
if training_args.warmup_steps > 0:
num_warmpup_steps = int(training_args.warmup_steps)
elif training_args.warmup_ratio > 0:
num_warmpup_steps = int(training_args.warmup_ratio * num_train_steps)
else:
num_warmpup_steps = 0
optimizer, _ = create_optimizer(
init_lr=training_args.learning_rate,
num_train_steps=num_train_steps,
num_warmup_steps=num_warmpup_steps,
adam_beta1=training_args.adam_beta1,
adam_beta2=training_args.adam_beta2,
adam_epsilon=training_args.adam_epsilon,
weight_decay_rate=training_args.weight_decay,
adam_global_clipnorm=training_args.max_grad_norm,
)
# model.prepare_tf_dataset() wraps a Hugging Face dataset in a tf.data.Dataset which is ready to use in
# training. This is the recommended way to use a Hugging Face dataset when training with Keras. You can also
# use the lower-level dataset.to_tf_dataset() method, but you will have to specify things like column names
# yourself if you use this method, whereas they are automatically inferred from the model input names when
# using model.prepare_tf_dataset()
# For more info see the docs:
# https://huggingface.co/docs/transformers/main/en/main_classes/model#transformers.TFPreTrainedModel.prepare_tf_dataset
# https://huggingface.co/docs/datasets/main/en/package_reference/main_classes#datasets.Dataset.to_tf_dataset
train_dataset = model.prepare_tf_dataset(
train_dataset,
shuffle=True,
batch_size=total_train_batch_size,
collate_fn=collate_fn,
).with_options(dataset_options)
else:
optimizer = "sgd" # Just write anything because we won't be using it
if training_args.do_eval:
eval_dataset = model.prepare_tf_dataset(
eval_dataset,
shuffle=False,
batch_size=total_eval_batch_size,
collate_fn=collate_fn,
).with_options(dataset_options)
if training_args.do_predict:
predict_dataset = model.prepare_tf_dataset(
predict_dataset,
shuffle=False,
batch_size=total_eval_batch_size,
collate_fn=collate_fn,
).with_options(dataset_options)
# Transformers models compute the right loss for their task by default when labels are passed, and will
# use this for training unless you specify your own loss function in compile().
model.compile(optimizer=optimizer, jit_compile=training_args.xla, metrics=["accuracy"])
push_to_hub_model_id = training_args.push_to_hub_model_id
if not push_to_hub_model_id:
model_name = model_args.model_name_or_path.split("/")[-1]
push_to_hub_model_id = f"{model_name}-finetuned-image-classification"
model_card_kwargs = {
"finetuned_from": model_args.model_name_or_path,
"tasks": "image-classification",
"dataset": data_args.dataset_name,
"tags": ["image-classification", "tensorflow", "vision"],
}
callbacks = []
if eval_dataset is not None:
callbacks.append(KerasMetricCallback(metric_fn=compute_metrics, eval_dataset=eval_dataset))
if training_args.push_to_hub:
callbacks.append(
PushToHubCallback(
output_dir=training_args.output_dir,
hub_model_id=push_to_hub_model_id,
hub_token=training_args.push_to_hub_token,
tokenizer=image_processor,
**model_card_kwargs,
)
)
if training_args.do_train:
model.fit(
train_dataset,
validation_data=eval_dataset,
epochs=int(training_args.num_train_epochs),
callbacks=callbacks,
)
if training_args.do_eval:
n_eval_batches = len(eval_dataset)
eval_predictions = model.predict(eval_dataset, steps=n_eval_batches)
eval_labels = dataset["validation"]["labels"][: n_eval_batches * total_eval_batch_size]
eval_metrics = compute_metrics((eval_predictions.logits, eval_labels))
logging.info("Eval metrics:")
for metric_name, value in eval_metrics.items():
logging.info(f"{metric_name}: {value:.3f}")
if training_args.output_dir is not None:
os.makedirs(training_args.output_dir, exist_ok=True)
with open(os.path.join(training_args.output_dir, "all_results.json"), "w") as f:
f.write(json.dumps(eval_metrics))
if training_args.do_predict:
n_predict_batches = len(predict_dataset)
test_predictions = model.predict(predict_dataset, steps=n_predict_batches)
test_labels = dataset["validation"]["labels"][: n_predict_batches * total_eval_batch_size]
test_metrics = compute_metrics((test_predictions.logits, test_labels))
logging.info("Test metrics:")
for metric_name, value in test_metrics.items():
logging.info(f"{metric_name}: {value:.3f}")
if training_args.output_dir is not None and not training_args.push_to_hub:
# If we're not pushing to hub, at least save a local copy when we're done
model.save_pretrained(training_args.output_dir)
if __name__ == "__main__":
main()
| transformers/examples/tensorflow/image-classification/run_image_classification.py/0 | {
"file_path": "transformers/examples/tensorflow/image-classification/run_image_classification.py",
"repo_id": "transformers",
"token_count": 10750
} | 300 |
## 🔥 Model cards now live inside each huggingface.co model repo 🔥
For consistency, ease of use and scalability, `README.md` model cards now live directly inside each model repo on the HuggingFace model hub.
### How to update a model card
You can directly update a model card inside any model repo you have **write access** to, i.e.:
- a model under your username namespace
- a model under any organization you are a part of.
You can either:
- update it, commit and push using your usual git workflow (command line, GUI, etc.)
- or edit it directly from the website's UI.
**What if you want to create or update a model card for a model you don't have write access to?**
In that case, you can open a [Hub pull request](https://huggingface.co/docs/hub/repositories-pull-requests-discussions)! Check out the [announcement](https://huggingface.co/blog/community-update) of this feature for more details 🤗.
### What happened to the model cards here?
We migrated every model card from the repo to its corresponding huggingface.co model repo. Individual commits were preserved, and they link back to the original commit on GitHub.
| transformers/model_cards/README.md/0 | {
"file_path": "transformers/model_cards/README.md",
"repo_id": "transformers",
"token_count": 296
} | 301 |
#!/usr/bin/env python
# Copyright 2020 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# Usage:
# ./gen-card-facebook-wmt19.py
import os
from pathlib import Path
def write_model_card(model_card_dir, src_lang, tgt_lang):
texts = {
"en": "Machine learning is great, isn't it?",
"ru": "Машинное обучение - это здорово, не так ли?",
"de": "Maschinelles Lernen ist großartig, oder?",
}
# BLUE scores as follows:
# "pair": [fairseq, transformers]
scores = {
"ru-en": ["[41.3](http://matrix.statmt.org/matrix/output/1907?run_id=6937)", "39.20"],
"en-ru": ["[36.4](http://matrix.statmt.org/matrix/output/1914?run_id=6724)", "33.47"],
"en-de": ["[43.1](http://matrix.statmt.org/matrix/output/1909?run_id=6862)", "42.83"],
"de-en": ["[42.3](http://matrix.statmt.org/matrix/output/1902?run_id=6750)", "41.35"],
}
pair = f"{src_lang}-{tgt_lang}"
readme = f"""
---
language:
- {src_lang}
- {tgt_lang}
thumbnail:
tags:
- translation
- wmt19
- facebook
license: apache-2.0
datasets:
- wmt19
metrics:
- bleu
---
# FSMT
## Model description
This is a ported version of [fairseq wmt19 transformer](https://github.com/pytorch/fairseq/blob/master/examples/wmt19/README.md) for {src_lang}-{tgt_lang}.
For more details, please see, [Facebook FAIR's WMT19 News Translation Task Submission](https://arxiv.org/abs/1907.06616).
The abbreviation FSMT stands for FairSeqMachineTranslation
All four models are available:
* [wmt19-en-ru](https://huggingface.co/facebook/wmt19-en-ru)
* [wmt19-ru-en](https://huggingface.co/facebook/wmt19-ru-en)
* [wmt19-en-de](https://huggingface.co/facebook/wmt19-en-de)
* [wmt19-de-en](https://huggingface.co/facebook/wmt19-de-en)
## Intended uses & limitations
#### How to use
```python
from transformers import FSMTForConditionalGeneration, FSMTTokenizer
mname = "facebook/wmt19-{src_lang}-{tgt_lang}"
tokenizer = FSMTTokenizer.from_pretrained(mname)
model = FSMTForConditionalGeneration.from_pretrained(mname)
input = "{texts[src_lang]}"
input_ids = tokenizer.encode(input, return_tensors="pt")
outputs = model.generate(input_ids)
decoded = tokenizer.decode(outputs[0], skip_special_tokens=True)
print(decoded) # {texts[tgt_lang]}
```
#### Limitations and bias
- The original (and this ported model) doesn't seem to handle well inputs with repeated sub-phrases, [content gets truncated](https://discuss.huggingface.co/t/issues-with-translating-inputs-containing-repeated-phrases/981)
## Training data
Pretrained weights were left identical to the original model released by fairseq. For more details, please, see the [paper](https://arxiv.org/abs/1907.06616).
## Eval results
pair | fairseq | transformers
-------|---------|----------
{pair} | {scores[pair][0]} | {scores[pair][1]}
The score is slightly below the score reported by `fairseq`, since `transformers`` currently doesn't support:
- model ensemble, therefore the best performing checkpoint was ported (``model4.pt``).
- re-ranking
The score was calculated using this code:
```bash
git clone https://github.com/huggingface/transformers
cd transformers
export PAIR={pair}
export DATA_DIR=data/$PAIR
export SAVE_DIR=data/$PAIR
export BS=8
export NUM_BEAMS=15
mkdir -p $DATA_DIR
sacrebleu -t wmt19 -l $PAIR --echo src > $DATA_DIR/val.source
sacrebleu -t wmt19 -l $PAIR --echo ref > $DATA_DIR/val.target
echo $PAIR
PYTHONPATH="src:examples/seq2seq" python examples/seq2seq/run_eval.py facebook/wmt19-$PAIR $DATA_DIR/val.source $SAVE_DIR/test_translations.txt --reference_path $DATA_DIR/val.target --score_path $SAVE_DIR/test_bleu.json --bs $BS --task translation --num_beams $NUM_BEAMS
```
note: fairseq reports using a beam of 50, so you should get a slightly higher score if re-run with `--num_beams 50`.
## Data Sources
- [training, etc.](http://www.statmt.org/wmt19/)
- [test set](http://matrix.statmt.org/test_sets/newstest2019.tgz?1556572561)
### BibTeX entry and citation info
```bibtex
@inproceedings{{...,
year={{2020}},
title={{Facebook FAIR's WMT19 News Translation Task Submission}},
author={{Ng, Nathan and Yee, Kyra and Baevski, Alexei and Ott, Myle and Auli, Michael and Edunov, Sergey}},
booktitle={{Proc. of WMT}},
}}
```
## TODO
- port model ensemble (fairseq uses 4 model checkpoints)
"""
os.makedirs(model_card_dir, exist_ok=True)
path = os.path.join(model_card_dir, "README.md")
print(f"Generating {path}")
with open(path, "w", encoding="utf-8") as f:
f.write(readme)
# make sure we are under the root of the project
repo_dir = Path(__file__).resolve().parent.parent.parent
model_cards_dir = repo_dir / "model_cards"
for model_name in ["wmt19-ru-en", "wmt19-en-ru", "wmt19-en-de", "wmt19-de-en"]:
base, src_lang, tgt_lang = model_name.split("-")
model_card_dir = model_cards_dir / "facebook" / model_name
write_model_card(model_card_dir, src_lang=src_lang, tgt_lang=tgt_lang)
| transformers/scripts/fsmt/gen-card-facebook-wmt19.py/0 | {
"file_path": "transformers/scripts/fsmt/gen-card-facebook-wmt19.py",
"repo_id": "transformers",
"token_count": 2078
} | 302 |
# coding=utf-8
# Copyright 2018 The HuggingFace Inc. team.
# Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import dataclasses
import json
import warnings
from dataclasses import dataclass, field
from time import time
from typing import List
from ..utils import logging
logger = logging.get_logger(__name__)
def list_field(default=None, metadata=None):
return field(default_factory=lambda: default, metadata=metadata)
@dataclass
class BenchmarkArguments:
"""
BenchMarkArguments are arguments we use in our benchmark scripts **which relate to the training loop itself**.
Using `HfArgumentParser` we can turn this class into argparse arguments to be able to specify them on the command
line.
"""
models: List[str] = list_field(
default=[],
metadata={
"help": (
"Model checkpoints to be provided to the AutoModel classes. Leave blank to benchmark the base version"
" of all available models"
)
},
)
batch_sizes: List[int] = list_field(
default=[8], metadata={"help": "List of batch sizes for which memory and time performance will be evaluated"}
)
sequence_lengths: List[int] = list_field(
default=[8, 32, 128, 512],
metadata={"help": "List of sequence lengths for which memory and time performance will be evaluated"},
)
inference: bool = field(
default=True,
metadata={"help": "Whether to benchmark inference of model. Inference can be disabled via --no-inference."},
)
cuda: bool = field(
default=True,
metadata={"help": "Whether to run on available cuda devices. Cuda can be disabled via --no-cuda."},
)
tpu: bool = field(
default=True, metadata={"help": "Whether to run on available tpu devices. TPU can be disabled via --no-tpu."}
)
fp16: bool = field(default=False, metadata={"help": "Use FP16 to accelerate inference."})
training: bool = field(default=False, metadata={"help": "Benchmark training of model"})
verbose: bool = field(default=False, metadata={"help": "Verbose memory tracing"})
speed: bool = field(
default=True,
metadata={"help": "Whether to perform speed measurements. Speed measurements can be disabled via --no-speed."},
)
memory: bool = field(
default=True,
metadata={
"help": "Whether to perform memory measurements. Memory measurements can be disabled via --no-memory"
},
)
trace_memory_line_by_line: bool = field(default=False, metadata={"help": "Trace memory line by line"})
save_to_csv: bool = field(default=False, metadata={"help": "Save result to a CSV file"})
log_print: bool = field(default=False, metadata={"help": "Save all print statements in a log file"})
env_print: bool = field(default=False, metadata={"help": "Whether to print environment information"})
multi_process: bool = field(
default=True,
metadata={
"help": (
"Whether to use multiprocessing for memory and speed measurement. It is highly recommended to use"
" multiprocessing for accurate CPU and GPU memory measurements. This option should only be disabled"
" for debugging / testing and on TPU."
)
},
)
inference_time_csv_file: str = field(
default=f"inference_time_{round(time())}.csv",
metadata={"help": "CSV filename used if saving time results to csv."},
)
inference_memory_csv_file: str = field(
default=f"inference_memory_{round(time())}.csv",
metadata={"help": "CSV filename used if saving memory results to csv."},
)
train_time_csv_file: str = field(
default=f"train_time_{round(time())}.csv",
metadata={"help": "CSV filename used if saving time results to csv for training."},
)
train_memory_csv_file: str = field(
default=f"train_memory_{round(time())}.csv",
metadata={"help": "CSV filename used if saving memory results to csv for training."},
)
env_info_csv_file: str = field(
default=f"env_info_{round(time())}.csv",
metadata={"help": "CSV filename used if saving environment information."},
)
log_filename: str = field(
default=f"log_{round(time())}.csv",
metadata={"help": "Log filename used if print statements are saved in log."},
)
repeat: int = field(default=3, metadata={"help": "Times an experiment will be run."})
only_pretrain_model: bool = field(
default=False,
metadata={
"help": (
"Instead of loading the model as defined in `config.architectures` if exists, just load the pretrain"
" model weights."
)
},
)
def __post_init__(self):
warnings.warn(
f"The class {self.__class__} is deprecated. Hugging Face Benchmarking utils"
" are deprecated in general and it is advised to use external Benchmarking libraries "
" to benchmark Transformer models.",
FutureWarning,
)
def to_json_string(self):
"""
Serializes this instance to a JSON string.
"""
return json.dumps(dataclasses.asdict(self), indent=2)
@property
def model_names(self) -> List[str]:
if len(self.models) <= 0:
raise ValueError(
"Please make sure you provide at least one model name / model identifier, *e.g.* `--models"
" google-bert/bert-base-cased` or `args.models = ['google-bert/bert-base-cased']."
)
return self.models
@property
def do_multi_processing(self):
if not self.multi_process:
return False
elif self.is_tpu:
logger.info("Multiprocessing is currently not possible on TPU.")
return False
else:
return True
| transformers/src/transformers/benchmark/benchmark_args_utils.py/0 | {
"file_path": "transformers/src/transformers/benchmark/benchmark_args_utils.py",
"repo_id": "transformers",
"token_count": 2424
} | 303 |
# Copyright 2020 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import subprocess
from argparse import ArgumentParser
from typing import List, Union
from huggingface_hub.hf_api import HfFolder, create_repo, whoami
from requests.exceptions import HTTPError
from . import BaseTransformersCLICommand
class UserCommands(BaseTransformersCLICommand):
@staticmethod
def register_subcommand(parser: ArgumentParser):
login_parser = parser.add_parser("login", help="Log in using the same credentials as on huggingface.co")
login_parser.set_defaults(func=lambda args: LoginCommand(args))
whoami_parser = parser.add_parser("whoami", help="Find out which huggingface.co account you are logged in as.")
whoami_parser.set_defaults(func=lambda args: WhoamiCommand(args))
logout_parser = parser.add_parser("logout", help="Log out")
logout_parser.set_defaults(func=lambda args: LogoutCommand(args))
# new system: git-based repo system
repo_parser = parser.add_parser(
"repo",
help="Deprecated: use `huggingface-cli` instead. Commands to interact with your huggingface.co repos.",
)
repo_subparsers = repo_parser.add_subparsers(
help="Deprecated: use `huggingface-cli` instead. huggingface.co repos related commands"
)
repo_create_parser = repo_subparsers.add_parser(
"create", help="Deprecated: use `huggingface-cli` instead. Create a new repo on huggingface.co"
)
repo_create_parser.add_argument(
"name",
type=str,
help="Name for your model's repo. Will be namespaced under your username to build the model id.",
)
repo_create_parser.add_argument("--organization", type=str, help="Optional: organization namespace.")
repo_create_parser.add_argument("-y", "--yes", action="store_true", help="Optional: answer Yes to the prompt")
repo_create_parser.set_defaults(func=lambda args: RepoCreateCommand(args))
class ANSI:
"""
Helper for en.wikipedia.org/wiki/ANSI_escape_code
"""
_bold = "\u001b[1m"
_red = "\u001b[31m"
_gray = "\u001b[90m"
_reset = "\u001b[0m"
@classmethod
def bold(cls, s):
return f"{cls._bold}{s}{cls._reset}"
@classmethod
def red(cls, s):
return f"{cls._bold}{cls._red}{s}{cls._reset}"
@classmethod
def gray(cls, s):
return f"{cls._gray}{s}{cls._reset}"
def tabulate(rows: List[List[Union[str, int]]], headers: List[str]) -> str:
"""
Inspired by:
- stackoverflow.com/a/8356620/593036
- stackoverflow.com/questions/9535954/printing-lists-as-tabular-data
"""
col_widths = [max(len(str(x)) for x in col) for col in zip(*rows, headers)]
row_format = ("{{:{}}} " * len(headers)).format(*col_widths)
lines = []
lines.append(row_format.format(*headers))
lines.append(row_format.format(*["-" * w for w in col_widths]))
for row in rows:
lines.append(row_format.format(*row))
return "\n".join(lines)
class BaseUserCommand:
def __init__(self, args):
self.args = args
class LoginCommand(BaseUserCommand):
def run(self):
print(
ANSI.red(
"ERROR! `huggingface-cli login` uses an outdated login mechanism "
"that is not compatible with the Hugging Face Hub backend anymore. "
"Please use `huggingface-cli login instead."
)
)
class WhoamiCommand(BaseUserCommand):
def run(self):
print(
ANSI.red(
"WARNING! `transformers-cli whoami` is deprecated and will be removed in v5. Please use "
"`huggingface-cli whoami` instead."
)
)
token = HfFolder.get_token()
if token is None:
print("Not logged in")
exit()
try:
user, orgs = whoami(token)
print(user)
if orgs:
print(ANSI.bold("orgs: "), ",".join(orgs))
except HTTPError as e:
print(e)
print(ANSI.red(e.response.text))
exit(1)
class LogoutCommand(BaseUserCommand):
def run(self):
print(
ANSI.red(
"ERROR! `transformers-cli logout` uses an outdated logout mechanism "
"that is not compatible with the Hugging Face Hub backend anymore. "
"Please use `huggingface-cli logout instead."
)
)
class RepoCreateCommand(BaseUserCommand):
def run(self):
print(
ANSI.red(
"WARNING! Managing repositories through transformers-cli is deprecated. "
"Please use `huggingface-cli` instead."
)
)
token = HfFolder.get_token()
if token is None:
print("Not logged in")
exit(1)
try:
stdout = subprocess.check_output(["git", "--version"]).decode("utf-8")
print(ANSI.gray(stdout.strip()))
except FileNotFoundError:
print("Looks like you do not have git installed, please install.")
try:
stdout = subprocess.check_output(["git-lfs", "--version"]).decode("utf-8")
print(ANSI.gray(stdout.strip()))
except FileNotFoundError:
print(
ANSI.red(
"Looks like you do not have git-lfs installed, please install."
" You can install from https://git-lfs.github.com/."
" Then run `git lfs install` (you only have to do this once)."
)
)
print("")
user, _ = whoami(token)
namespace = self.args.organization if self.args.organization is not None else user
full_name = f"{namespace}/{self.args.name}"
print(f"You are about to create {ANSI.bold(full_name)}")
if not self.args.yes:
choice = input("Proceed? [Y/n] ").lower()
if not (choice == "" or choice == "y" or choice == "yes"):
print("Abort")
exit()
try:
url = create_repo(token, name=self.args.name, organization=self.args.organization)
except HTTPError as e:
print(e)
print(ANSI.red(e.response.text))
exit(1)
print("\nYour repo now lives at:")
print(f" {ANSI.bold(url)}")
print("\nYou can clone it locally with the command below, and commit/push as usual.")
print(f"\n git clone {url}")
print("")
| transformers/src/transformers/commands/user.py/0 | {
"file_path": "transformers/src/transformers/commands/user.py",
"repo_id": "transformers",
"token_count": 3107
} | 304 |
# coding=utf-8
# Copyright 2018 The Google AI Language Team Authors and The HuggingFace Inc. team.
# Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
""" GLUE processors and helpers"""
import os
import warnings
from dataclasses import asdict
from enum import Enum
from typing import List, Optional, Union
from ...tokenization_utils import PreTrainedTokenizer
from ...utils import is_tf_available, logging
from .utils import DataProcessor, InputExample, InputFeatures
if is_tf_available():
import tensorflow as tf
logger = logging.get_logger(__name__)
DEPRECATION_WARNING = (
"This {0} will be removed from the library soon, preprocessing should be handled with the 🤗 Datasets "
"library. You can have a look at this example script for pointers: "
"https://github.com/huggingface/transformers/blob/main/examples/pytorch/text-classification/run_glue.py"
)
def glue_convert_examples_to_features(
examples: Union[List[InputExample], "tf.data.Dataset"],
tokenizer: PreTrainedTokenizer,
max_length: Optional[int] = None,
task=None,
label_list=None,
output_mode=None,
):
"""
Loads a data file into a list of `InputFeatures`
Args:
examples: List of `InputExamples` or `tf.data.Dataset` containing the examples.
tokenizer: Instance of a tokenizer that will tokenize the examples
max_length: Maximum example length. Defaults to the tokenizer's max_len
task: GLUE task
label_list: List of labels. Can be obtained from the processor using the `processor.get_labels()` method
output_mode: String indicating the output mode. Either `regression` or `classification`
Returns:
If the `examples` input is a `tf.data.Dataset`, will return a `tf.data.Dataset` containing the task-specific
features. If the input is a list of `InputExamples`, will return a list of task-specific `InputFeatures` which
can be fed to the model.
"""
warnings.warn(DEPRECATION_WARNING.format("function"), FutureWarning)
if is_tf_available() and isinstance(examples, tf.data.Dataset):
if task is None:
raise ValueError("When calling glue_convert_examples_to_features from TF, the task parameter is required.")
return _tf_glue_convert_examples_to_features(examples, tokenizer, max_length=max_length, task=task)
return _glue_convert_examples_to_features(
examples, tokenizer, max_length=max_length, task=task, label_list=label_list, output_mode=output_mode
)
if is_tf_available():
def _tf_glue_convert_examples_to_features(
examples: tf.data.Dataset,
tokenizer: PreTrainedTokenizer,
task=str,
max_length: Optional[int] = None,
) -> tf.data.Dataset:
"""
Returns:
A `tf.data.Dataset` containing the task-specific features.
"""
processor = glue_processors[task]()
examples = [processor.tfds_map(processor.get_example_from_tensor_dict(example)) for example in examples]
features = glue_convert_examples_to_features(examples, tokenizer, max_length=max_length, task=task)
label_type = tf.float32 if task == "sts-b" else tf.int64
def gen():
for ex in features:
d = {k: v for k, v in asdict(ex).items() if v is not None}
label = d.pop("label")
yield (d, label)
input_names = tokenizer.model_input_names
return tf.data.Dataset.from_generator(
gen,
({k: tf.int32 for k in input_names}, label_type),
({k: tf.TensorShape([None]) for k in input_names}, tf.TensorShape([])),
)
def _glue_convert_examples_to_features(
examples: List[InputExample],
tokenizer: PreTrainedTokenizer,
max_length: Optional[int] = None,
task=None,
label_list=None,
output_mode=None,
):
if max_length is None:
max_length = tokenizer.model_max_length
if task is not None:
processor = glue_processors[task]()
if label_list is None:
label_list = processor.get_labels()
logger.info(f"Using label list {label_list} for task {task}")
if output_mode is None:
output_mode = glue_output_modes[task]
logger.info(f"Using output mode {output_mode} for task {task}")
label_map = {label: i for i, label in enumerate(label_list)}
def label_from_example(example: InputExample) -> Union[int, float, None]:
if example.label is None:
return None
if output_mode == "classification":
return label_map[example.label]
elif output_mode == "regression":
return float(example.label)
raise KeyError(output_mode)
labels = [label_from_example(example) for example in examples]
batch_encoding = tokenizer(
[(example.text_a, example.text_b) for example in examples],
max_length=max_length,
padding="max_length",
truncation=True,
)
features = []
for i in range(len(examples)):
inputs = {k: batch_encoding[k][i] for k in batch_encoding}
feature = InputFeatures(**inputs, label=labels[i])
features.append(feature)
for i, example in enumerate(examples[:5]):
logger.info("*** Example ***")
logger.info(f"guid: {example.guid}")
logger.info(f"features: {features[i]}")
return features
class OutputMode(Enum):
classification = "classification"
regression = "regression"
class MrpcProcessor(DataProcessor):
"""Processor for the MRPC data set (GLUE version)."""
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
warnings.warn(DEPRECATION_WARNING.format("processor"), FutureWarning)
def get_example_from_tensor_dict(self, tensor_dict):
"""See base class."""
return InputExample(
tensor_dict["idx"].numpy(),
tensor_dict["sentence1"].numpy().decode("utf-8"),
tensor_dict["sentence2"].numpy().decode("utf-8"),
str(tensor_dict["label"].numpy()),
)
def get_train_examples(self, data_dir):
"""See base class."""
logger.info(f"LOOKING AT {os.path.join(data_dir, 'train.tsv')}")
return self._create_examples(self._read_tsv(os.path.join(data_dir, "train.tsv")), "train")
def get_dev_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "dev.tsv")), "dev")
def get_test_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "test.tsv")), "test")
def get_labels(self):
"""See base class."""
return ["0", "1"]
def _create_examples(self, lines, set_type):
"""Creates examples for the training, dev and test sets."""
examples = []
for i, line in enumerate(lines):
if i == 0:
continue
guid = f"{set_type}-{i}"
text_a = line[3]
text_b = line[4]
label = None if set_type == "test" else line[0]
examples.append(InputExample(guid=guid, text_a=text_a, text_b=text_b, label=label))
return examples
class MnliProcessor(DataProcessor):
"""Processor for the MultiNLI data set (GLUE version)."""
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
warnings.warn(DEPRECATION_WARNING.format("processor"), FutureWarning)
def get_example_from_tensor_dict(self, tensor_dict):
"""See base class."""
return InputExample(
tensor_dict["idx"].numpy(),
tensor_dict["premise"].numpy().decode("utf-8"),
tensor_dict["hypothesis"].numpy().decode("utf-8"),
str(tensor_dict["label"].numpy()),
)
def get_train_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "train.tsv")), "train")
def get_dev_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "dev_matched.tsv")), "dev_matched")
def get_test_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "test_matched.tsv")), "test_matched")
def get_labels(self):
"""See base class."""
return ["contradiction", "entailment", "neutral"]
def _create_examples(self, lines, set_type):
"""Creates examples for the training, dev and test sets."""
examples = []
for i, line in enumerate(lines):
if i == 0:
continue
guid = f"{set_type}-{line[0]}"
text_a = line[8]
text_b = line[9]
label = None if set_type.startswith("test") else line[-1]
examples.append(InputExample(guid=guid, text_a=text_a, text_b=text_b, label=label))
return examples
class MnliMismatchedProcessor(MnliProcessor):
"""Processor for the MultiNLI Mismatched data set (GLUE version)."""
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
warnings.warn(DEPRECATION_WARNING.format("processor"), FutureWarning)
def get_dev_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "dev_mismatched.tsv")), "dev_mismatched")
def get_test_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "test_mismatched.tsv")), "test_mismatched")
class ColaProcessor(DataProcessor):
"""Processor for the CoLA data set (GLUE version)."""
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
warnings.warn(DEPRECATION_WARNING.format("processor"), FutureWarning)
def get_example_from_tensor_dict(self, tensor_dict):
"""See base class."""
return InputExample(
tensor_dict["idx"].numpy(),
tensor_dict["sentence"].numpy().decode("utf-8"),
None,
str(tensor_dict["label"].numpy()),
)
def get_train_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "train.tsv")), "train")
def get_dev_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "dev.tsv")), "dev")
def get_test_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "test.tsv")), "test")
def get_labels(self):
"""See base class."""
return ["0", "1"]
def _create_examples(self, lines, set_type):
"""Creates examples for the training, dev and test sets."""
test_mode = set_type == "test"
if test_mode:
lines = lines[1:]
text_index = 1 if test_mode else 3
examples = []
for i, line in enumerate(lines):
guid = f"{set_type}-{i}"
text_a = line[text_index]
label = None if test_mode else line[1]
examples.append(InputExample(guid=guid, text_a=text_a, text_b=None, label=label))
return examples
class Sst2Processor(DataProcessor):
"""Processor for the SST-2 data set (GLUE version)."""
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
warnings.warn(DEPRECATION_WARNING.format("processor"), FutureWarning)
def get_example_from_tensor_dict(self, tensor_dict):
"""See base class."""
return InputExample(
tensor_dict["idx"].numpy(),
tensor_dict["sentence"].numpy().decode("utf-8"),
None,
str(tensor_dict["label"].numpy()),
)
def get_train_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "train.tsv")), "train")
def get_dev_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "dev.tsv")), "dev")
def get_test_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "test.tsv")), "test")
def get_labels(self):
"""See base class."""
return ["0", "1"]
def _create_examples(self, lines, set_type):
"""Creates examples for the training, dev and test sets."""
examples = []
text_index = 1 if set_type == "test" else 0
for i, line in enumerate(lines):
if i == 0:
continue
guid = f"{set_type}-{i}"
text_a = line[text_index]
label = None if set_type == "test" else line[1]
examples.append(InputExample(guid=guid, text_a=text_a, text_b=None, label=label))
return examples
class StsbProcessor(DataProcessor):
"""Processor for the STS-B data set (GLUE version)."""
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
warnings.warn(DEPRECATION_WARNING.format("processor"), FutureWarning)
def get_example_from_tensor_dict(self, tensor_dict):
"""See base class."""
return InputExample(
tensor_dict["idx"].numpy(),
tensor_dict["sentence1"].numpy().decode("utf-8"),
tensor_dict["sentence2"].numpy().decode("utf-8"),
str(tensor_dict["label"].numpy()),
)
def get_train_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "train.tsv")), "train")
def get_dev_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "dev.tsv")), "dev")
def get_test_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "test.tsv")), "test")
def get_labels(self):
"""See base class."""
return [None]
def _create_examples(self, lines, set_type):
"""Creates examples for the training, dev and test sets."""
examples = []
for i, line in enumerate(lines):
if i == 0:
continue
guid = f"{set_type}-{line[0]}"
text_a = line[7]
text_b = line[8]
label = None if set_type == "test" else line[-1]
examples.append(InputExample(guid=guid, text_a=text_a, text_b=text_b, label=label))
return examples
class QqpProcessor(DataProcessor):
"""Processor for the QQP data set (GLUE version)."""
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
warnings.warn(DEPRECATION_WARNING.format("processor"), FutureWarning)
def get_example_from_tensor_dict(self, tensor_dict):
"""See base class."""
return InputExample(
tensor_dict["idx"].numpy(),
tensor_dict["question1"].numpy().decode("utf-8"),
tensor_dict["question2"].numpy().decode("utf-8"),
str(tensor_dict["label"].numpy()),
)
def get_train_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "train.tsv")), "train")
def get_dev_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "dev.tsv")), "dev")
def get_test_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "test.tsv")), "test")
def get_labels(self):
"""See base class."""
return ["0", "1"]
def _create_examples(self, lines, set_type):
"""Creates examples for the training, dev and test sets."""
test_mode = set_type == "test"
q1_index = 1 if test_mode else 3
q2_index = 2 if test_mode else 4
examples = []
for i, line in enumerate(lines):
if i == 0:
continue
guid = f"{set_type}-{line[0]}"
try:
text_a = line[q1_index]
text_b = line[q2_index]
label = None if test_mode else line[5]
except IndexError:
continue
examples.append(InputExample(guid=guid, text_a=text_a, text_b=text_b, label=label))
return examples
class QnliProcessor(DataProcessor):
"""Processor for the QNLI data set (GLUE version)."""
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
warnings.warn(DEPRECATION_WARNING.format("processor"), FutureWarning)
def get_example_from_tensor_dict(self, tensor_dict):
"""See base class."""
return InputExample(
tensor_dict["idx"].numpy(),
tensor_dict["question"].numpy().decode("utf-8"),
tensor_dict["sentence"].numpy().decode("utf-8"),
str(tensor_dict["label"].numpy()),
)
def get_train_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "train.tsv")), "train")
def get_dev_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "dev.tsv")), "dev")
def get_test_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "test.tsv")), "test")
def get_labels(self):
"""See base class."""
return ["entailment", "not_entailment"]
def _create_examples(self, lines, set_type):
"""Creates examples for the training, dev and test sets."""
examples = []
for i, line in enumerate(lines):
if i == 0:
continue
guid = f"{set_type}-{line[0]}"
text_a = line[1]
text_b = line[2]
label = None if set_type == "test" else line[-1]
examples.append(InputExample(guid=guid, text_a=text_a, text_b=text_b, label=label))
return examples
class RteProcessor(DataProcessor):
"""Processor for the RTE data set (GLUE version)."""
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
warnings.warn(DEPRECATION_WARNING.format("processor"), FutureWarning)
def get_example_from_tensor_dict(self, tensor_dict):
"""See base class."""
return InputExample(
tensor_dict["idx"].numpy(),
tensor_dict["sentence1"].numpy().decode("utf-8"),
tensor_dict["sentence2"].numpy().decode("utf-8"),
str(tensor_dict["label"].numpy()),
)
def get_train_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "train.tsv")), "train")
def get_dev_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "dev.tsv")), "dev")
def get_test_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "test.tsv")), "test")
def get_labels(self):
"""See base class."""
return ["entailment", "not_entailment"]
def _create_examples(self, lines, set_type):
"""Creates examples for the training, dev and test sets."""
examples = []
for i, line in enumerate(lines):
if i == 0:
continue
guid = f"{set_type}-{line[0]}"
text_a = line[1]
text_b = line[2]
label = None if set_type == "test" else line[-1]
examples.append(InputExample(guid=guid, text_a=text_a, text_b=text_b, label=label))
return examples
class WnliProcessor(DataProcessor):
"""Processor for the WNLI data set (GLUE version)."""
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
warnings.warn(DEPRECATION_WARNING.format("processor"), FutureWarning)
def get_example_from_tensor_dict(self, tensor_dict):
"""See base class."""
return InputExample(
tensor_dict["idx"].numpy(),
tensor_dict["sentence1"].numpy().decode("utf-8"),
tensor_dict["sentence2"].numpy().decode("utf-8"),
str(tensor_dict["label"].numpy()),
)
def get_train_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "train.tsv")), "train")
def get_dev_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "dev.tsv")), "dev")
def get_test_examples(self, data_dir):
"""See base class."""
return self._create_examples(self._read_tsv(os.path.join(data_dir, "test.tsv")), "test")
def get_labels(self):
"""See base class."""
return ["0", "1"]
def _create_examples(self, lines, set_type):
"""Creates examples for the training, dev and test sets."""
examples = []
for i, line in enumerate(lines):
if i == 0:
continue
guid = f"{set_type}-{line[0]}"
text_a = line[1]
text_b = line[2]
label = None if set_type == "test" else line[-1]
examples.append(InputExample(guid=guid, text_a=text_a, text_b=text_b, label=label))
return examples
glue_tasks_num_labels = {
"cola": 2,
"mnli": 3,
"mrpc": 2,
"sst-2": 2,
"sts-b": 1,
"qqp": 2,
"qnli": 2,
"rte": 2,
"wnli": 2,
}
glue_processors = {
"cola": ColaProcessor,
"mnli": MnliProcessor,
"mnli-mm": MnliMismatchedProcessor,
"mrpc": MrpcProcessor,
"sst-2": Sst2Processor,
"sts-b": StsbProcessor,
"qqp": QqpProcessor,
"qnli": QnliProcessor,
"rte": RteProcessor,
"wnli": WnliProcessor,
}
glue_output_modes = {
"cola": "classification",
"mnli": "classification",
"mnli-mm": "classification",
"mrpc": "classification",
"sst-2": "classification",
"sts-b": "regression",
"qqp": "classification",
"qnli": "classification",
"rte": "classification",
"wnli": "classification",
}
| transformers/src/transformers/data/processors/glue.py/0 | {
"file_path": "transformers/src/transformers/data/processors/glue.py",
"repo_id": "transformers",
"token_count": 10214
} | 305 |
# coding=utf-8
# Copyright 2022 The HuggingFace Inc. team.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
""" Generation configuration class and utilities."""
import copy
import json
import os
import warnings
from typing import TYPE_CHECKING, Any, Dict, Optional, Union
from .. import __version__
from ..configuration_utils import PretrainedConfig
from ..utils import (
GENERATION_CONFIG_NAME,
ExplicitEnum,
PushToHubMixin,
cached_file,
download_url,
extract_commit_hash,
is_remote_url,
logging,
)
if TYPE_CHECKING:
from ..modeling_utils import PreTrainedModel
logger = logging.get_logger(__name__)
METADATA_FIELDS = ("_from_model_config", "_commit_hash", "_original_object_hash", "transformers_version")
class GenerationMode(ExplicitEnum):
"""
Possible generation modes, downstream of the [`~generation.GenerationMixin.generate`] method.
"""
# Non-beam methods
CONTRASTIVE_SEARCH = "contrastive_search"
GREEDY_SEARCH = "greedy_search"
SAMPLE = "sample"
ASSISTED_GENERATION = "assisted_generation"
# Beam methods
BEAM_SEARCH = "beam_search"
BEAM_SAMPLE = "beam_sample"
CONSTRAINED_BEAM_SEARCH = "constrained_beam_search"
GROUP_BEAM_SEARCH = "group_beam_search"
class GenerationConfig(PushToHubMixin):
# no-format
r"""
Class that holds a configuration for a generation task. A `generate` call supports the following generation methods
for text-decoder, text-to-text, speech-to-text, and vision-to-text models:
- *greedy decoding* by calling [`~generation.GenerationMixin._greedy_search`] if `num_beams=1` and
`do_sample=False`
- *contrastive search* by calling [`~generation.GenerationMixin._contrastive_search`] if `penalty_alpha>0.`
and `top_k>1`
- *multinomial sampling* by calling [`~generation.GenerationMixin._sample`] if `num_beams=1` and
`do_sample=True`
- *beam-search decoding* by calling [`~generation.GenerationMixin._beam_search`] if `num_beams>1` and
`do_sample=False`
- *beam-search multinomial sampling* by calling [`~generation.GenerationMixin._beam_sample`] if
`num_beams>1` and `do_sample=True`
- *diverse beam-search decoding* by calling [`~generation.GenerationMixin._group_beam_search`], if
`num_beams>1` and `num_beam_groups>1`
- *constrained beam-search decoding* by calling [`~generation.GenerationMixin._constrained_beam_search`], if
`constraints!=None` or `force_words_ids!=None`
- *assisted decoding* by calling [`~generation.GenerationMixin._assisted_decoding`], if
`assistant_model` or `prompt_lookup_num_tokens` is passed to `.generate()`
You do not need to call any of the above methods directly. Pass custom parameter values to '.generate()'. To learn
more about decoding strategies refer to the [text generation strategies guide](../generation_strategies).
<Tip>
A large number of these flags control the logits or the stopping criteria of the generation. Make sure you check
the [generate-related classes](https://huggingface.co/docs/transformers/internal/generation_utils) for a full
description of the possible manipulations, as well as examples of their usage.
</Tip>
Arg:
> Parameters that control the length of the output
max_length (`int`, *optional*, defaults to 20):
The maximum length the generated tokens can have. Corresponds to the length of the input prompt +
`max_new_tokens`. Its effect is overridden by `max_new_tokens`, if also set.
max_new_tokens (`int`, *optional*):
The maximum numbers of tokens to generate, ignoring the number of tokens in the prompt.
min_length (`int`, *optional*, defaults to 0):
The minimum length of the sequence to be generated. Corresponds to the length of the input prompt +
`min_new_tokens`. Its effect is overridden by `min_new_tokens`, if also set.
min_new_tokens (`int`, *optional*):
The minimum numbers of tokens to generate, ignoring the number of tokens in the prompt.
early_stopping (`bool` or `str`, *optional*, defaults to `False`):
Controls the stopping condition for beam-based methods, like beam-search. It accepts the following values:
`True`, where the generation stops as soon as there are `num_beams` complete candidates; `False`, where an
heuristic is applied and the generation stops when is it very unlikely to find better candidates;
`"never"`, where the beam search procedure only stops when there cannot be better candidates (canonical
beam search algorithm).
max_time(`float`, *optional*):
The maximum amount of time you allow the computation to run for in seconds. generation will still finish
the current pass after allocated time has been passed.
> Parameters that control the generation strategy used
do_sample (`bool`, *optional*, defaults to `False`):
Whether or not to use sampling ; use greedy decoding otherwise.
num_beams (`int`, *optional*, defaults to 1):
Number of beams for beam search. 1 means no beam search.
num_beam_groups (`int`, *optional*, defaults to 1):
Number of groups to divide `num_beams` into in order to ensure diversity among different groups of beams.
[this paper](https://arxiv.org/pdf/1610.02424.pdf) for more details.
penalty_alpha (`float`, *optional*):
The values balance the model confidence and the degeneration penalty in contrastive search decoding.
use_cache (`bool`, *optional*, defaults to `True`):
Whether or not the model should use the past last key/values attentions (if applicable to the model) to
speed up decoding.
> Parameters for manipulation of the model output logits
temperature (`float`, *optional*, defaults to 1.0):
The value used to modulate the next token probabilities.
top_k (`int`, *optional*, defaults to 50):
The number of highest probability vocabulary tokens to keep for top-k-filtering.
top_p (`float`, *optional*, defaults to 1.0):
If set to float < 1, only the smallest set of most probable tokens with probabilities that add up to
`top_p` or higher are kept for generation.
typical_p (`float`, *optional*, defaults to 1.0):
Local typicality measures how similar the conditional probability of predicting a target token next is to
the expected conditional probability of predicting a random token next, given the partial text already
generated. If set to float < 1, the smallest set of the most locally typical tokens with probabilities that
add up to `typical_p` or higher are kept for generation. See [this
paper](https://arxiv.org/pdf/2202.00666.pdf) for more details.
epsilon_cutoff (`float`, *optional*, defaults to 0.0):
If set to float strictly between 0 and 1, only tokens with a conditional probability greater than
`epsilon_cutoff` will be sampled. In the paper, suggested values range from 3e-4 to 9e-4, depending on the
size of the model. See [Truncation Sampling as Language Model
Desmoothing](https://arxiv.org/abs/2210.15191) for more details.
eta_cutoff (`float`, *optional*, defaults to 0.0):
Eta sampling is a hybrid of locally typical sampling and epsilon sampling. If set to float strictly between
0 and 1, a token is only considered if it is greater than either `eta_cutoff` or `sqrt(eta_cutoff) *
exp(-entropy(softmax(next_token_logits)))`. The latter term is intuitively the expected next token
probability, scaled by `sqrt(eta_cutoff)`. In the paper, suggested values range from 3e-4 to 2e-3,
depending on the size of the model. See [Truncation Sampling as Language Model
Desmoothing](https://arxiv.org/abs/2210.15191) for more details.
diversity_penalty (`float`, *optional*, defaults to 0.0):
This value is subtracted from a beam's score if it generates a token same as any beam from other group at a
particular time. Note that `diversity_penalty` is only effective if `group beam search` is enabled.
repetition_penalty (`float`, *optional*, defaults to 1.0):
The parameter for repetition penalty. 1.0 means no penalty. See [this
paper](https://arxiv.org/pdf/1909.05858.pdf) for more details.
encoder_repetition_penalty (`float`, *optional*, defaults to 1.0):
The paramater for encoder_repetition_penalty. An exponential penalty on sequences that are not in the
original input. 1.0 means no penalty.
length_penalty (`float`, *optional*, defaults to 1.0):
Exponential penalty to the length that is used with beam-based generation. It is applied as an exponent to
the sequence length, which in turn is used to divide the score of the sequence. Since the score is the log
likelihood of the sequence (i.e. negative), `length_penalty` > 0.0 promotes longer sequences, while
`length_penalty` < 0.0 encourages shorter sequences.
no_repeat_ngram_size (`int`, *optional*, defaults to 0):
If set to int > 0, all ngrams of that size can only occur once.
bad_words_ids(`List[List[int]]`, *optional*):
List of list of token ids that are not allowed to be generated. Check
[`~generation.NoBadWordsLogitsProcessor`] for further documentation and examples.
force_words_ids(`List[List[int]]` or `List[List[List[int]]]`, *optional*):
List of token ids that must be generated. If given a `List[List[int]]`, this is treated as a simple list of
words that must be included, the opposite to `bad_words_ids`. If given `List[List[List[int]]]`, this
triggers a [disjunctive constraint](https://github.com/huggingface/transformers/issues/14081), where one
can allow different forms of each word.
renormalize_logits (`bool`, *optional*, defaults to `False`):
Whether to renormalize the logits after applying all the logits processors or warpers (including the custom
ones). It's highly recommended to set this flag to `True` as the search algorithms suppose the score logits
are normalized but some logit processors or warpers break the normalization.
constraints (`List[Constraint]`, *optional*):
Custom constraints that can be added to the generation to ensure that the output will contain the use of
certain tokens as defined by `Constraint` objects, in the most sensible way possible.
forced_bos_token_id (`int`, *optional*, defaults to `model.config.forced_bos_token_id`):
The id of the token to force as the first generated token after the `decoder_start_token_id`. Useful for
multilingual models like [mBART](../model_doc/mbart) where the first generated token needs to be the target
language token.
forced_eos_token_id (`Union[int, List[int]]`, *optional*, defaults to `model.config.forced_eos_token_id`):
The id of the token to force as the last generated token when `max_length` is reached. Optionally, use a
list to set multiple *end-of-sequence* tokens.
remove_invalid_values (`bool`, *optional*, defaults to `model.config.remove_invalid_values`):
Whether to remove possible *nan* and *inf* outputs of the model to prevent the generation method to crash.
Note that using `remove_invalid_values` can slow down generation.
exponential_decay_length_penalty (`tuple(int, float)`, *optional*):
This Tuple adds an exponentially increasing length penalty, after a certain amount of tokens have been
generated. The tuple shall consist of: `(start_index, decay_factor)` where `start_index` indicates where
penalty starts and `decay_factor` represents the factor of exponential decay
suppress_tokens (`List[int]`, *optional*):
A list of tokens that will be suppressed at generation. The `SupressTokens` logit processor will set their
log probs to `-inf` so that they are not sampled.
begin_suppress_tokens (`List[int]`, *optional*):
A list of tokens that will be suppressed at the beginning of the generation. The `SupressBeginTokens` logit
processor will set their log probs to `-inf` so that they are not sampled.
forced_decoder_ids (`List[List[int]]`, *optional*):
A list of pairs of integers which indicates a mapping from generation indices to token indices that will be
forced before sampling. For example, `[[1, 123]]` means the second generated token will always be a token
of index 123.
sequence_bias (`Dict[Tuple[int], float]`, *optional*)):
Dictionary that maps a sequence of tokens to its bias term. Positive biases increase the odds of the
sequence being selected, while negative biases do the opposite. Check
[`~generation.SequenceBiasLogitsProcessor`] for further documentation and examples.
guidance_scale (`float`, *optional*):
The guidance scale for classifier free guidance (CFG). CFG is enabled by setting `guidance_scale > 1`.
Higher guidance scale encourages the model to generate samples that are more closely linked to the input
prompt, usually at the expense of poorer quality.
low_memory (`bool`, *optional*):
Switch to sequential beam search and sequential topk for contrastive search to reduce peak memory.
Used with beam search and contrastive search.
> Parameters that define the output variables of `generate`
num_return_sequences(`int`, *optional*, defaults to 1):
The number of independently computed returned sequences for each element in the batch.
output_attentions (`bool`, *optional*, defaults to `False`):
Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned
tensors for more details.
output_hidden_states (`bool`, *optional*, defaults to `False`):
Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for
more details.
output_scores (`bool`, *optional*, defaults to `False`):
Whether or not to return the prediction scores. See `scores` under returned tensors for more details.
output_logits (`bool`, *optional*):
Whether or not to return the unprocessed prediction logit scores. See `logits` under returned tensors for
more details.
return_dict_in_generate (`bool`, *optional*, defaults to `False`):
Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple.
> Special tokens that can be used at generation time
pad_token_id (`int`, *optional*):
The id of the *padding* token.
bos_token_id (`int`, *optional*):
The id of the *beginning-of-sequence* token.
eos_token_id (`Union[int, List[int]]`, *optional*):
The id of the *end-of-sequence* token. Optionally, use a list to set multiple *end-of-sequence* tokens.
> Generation parameters exclusive to encoder-decoder models
encoder_no_repeat_ngram_size (`int`, *optional*, defaults to 0):
If set to int > 0, all ngrams of that size that occur in the `encoder_input_ids` cannot occur in the
`decoder_input_ids`.
decoder_start_token_id (`Union[int, List[int]]`, *optional*):
If an encoder-decoder model starts decoding with a different token than *bos*, the id of that token or a list of length
`batch_size`. Indicating a list enables different start ids for each element in the batch
(e.g. multilingual models with different target languages in one batch)
> Generation parameters exclusive to [assistant generation](https://arxiv.org/abs/2211.17192)
num_assistant_tokens (`int`, *optional*, defaults to 5):
Defines the number of _speculative tokens_ that shall be generated by the assistant model before being
checked by the target model at each iteration. Higher values for `num_assistant_tokens` make the generation
more _speculative_ : If the assistant model is performant larger speed-ups can be reached, if the assistant
model requires lots of corrections, lower speed-ups are reached.
num_assistant_tokens_schedule (`str`, *optional*, defaults to `"heuristic"`):
Defines the schedule at which max assistant tokens shall be changed during inference.
- `"heuristic"`: When all speculative tokens are correct, increase `num_assistant_tokens` by 2 else
reduce by 1. `num_assistant_tokens` value is persistent over multiple generation calls with the same assistant model.
- `"heuristic_transient"`: Same as `"heuristic"` but `num_assistant_tokens` is reset to its initial value after each generation call.
- `"constant"`: `num_assistant_tokens` stays unchanged during generation
prompt_lookup_num_tokens (`int`, *optional*, default to `None`):
The number of tokens to be output as candidate tokens.
max_matching_ngram_size (`int`, *optional*, default to `None`):
The maximum ngram size to be considered for matching in the prompt. Default to 2 if not provided.
> Parameters specific to the caching mechanism:
cache_implementation (`str`, *optional*, default to `None`):
Cache class that should be used when generating.
> Wild card
generation_kwargs:
Additional generation kwargs will be forwarded to the `generate` function of the model. Kwargs that are not
present in `generate`'s signature will be used in the model forward pass.
"""
def __init__(self, **kwargs):
# Parameters that control the length of the output
self.max_length = kwargs.pop("max_length", 20)
self.max_new_tokens = kwargs.pop("max_new_tokens", None)
self.min_length = kwargs.pop("min_length", 0)
self.min_new_tokens = kwargs.pop("min_new_tokens", None)
self.early_stopping = kwargs.pop("early_stopping", False)
self.max_time = kwargs.pop("max_time", None)
# Parameters that control the generation strategy used
self.do_sample = kwargs.pop("do_sample", False)
self.num_beams = kwargs.pop("num_beams", 1)
self.num_beam_groups = kwargs.pop("num_beam_groups", 1)
self.penalty_alpha = kwargs.pop("penalty_alpha", None)
self.use_cache = kwargs.pop("use_cache", True)
# Parameters for manipulation of the model output logits
self.temperature = kwargs.pop("temperature", 1.0)
self.top_k = kwargs.pop("top_k", 50)
self.top_p = kwargs.pop("top_p", 1.0)
self.typical_p = kwargs.pop("typical_p", 1.0)
self.epsilon_cutoff = kwargs.pop("epsilon_cutoff", 0.0)
self.eta_cutoff = kwargs.pop("eta_cutoff", 0.0)
self.diversity_penalty = kwargs.pop("diversity_penalty", 0.0)
self.repetition_penalty = kwargs.pop("repetition_penalty", 1.0)
self.encoder_repetition_penalty = kwargs.pop("encoder_repetition_penalty", 1.0)
self.length_penalty = kwargs.pop("length_penalty", 1.0)
self.no_repeat_ngram_size = kwargs.pop("no_repeat_ngram_size", 0)
self.bad_words_ids = kwargs.pop("bad_words_ids", None)
self.force_words_ids = kwargs.pop("force_words_ids", None)
self.renormalize_logits = kwargs.pop("renormalize_logits", False)
self.constraints = kwargs.pop("constraints", None)
self.forced_bos_token_id = kwargs.pop("forced_bos_token_id", None)
self.forced_eos_token_id = kwargs.pop("forced_eos_token_id", None)
self.remove_invalid_values = kwargs.pop("remove_invalid_values", False)
self.exponential_decay_length_penalty = kwargs.pop("exponential_decay_length_penalty", None)
self.suppress_tokens = kwargs.pop("suppress_tokens", None)
self.begin_suppress_tokens = kwargs.pop("begin_suppress_tokens", None)
self.forced_decoder_ids = kwargs.pop("forced_decoder_ids", None)
self.sequence_bias = kwargs.pop("sequence_bias", None)
self.guidance_scale = kwargs.pop("guidance_scale", None)
self.low_memory = kwargs.pop("low_memory", None)
# Parameters that define the output variables of `generate`
self.num_return_sequences = kwargs.pop("num_return_sequences", 1)
self.output_attentions = kwargs.pop("output_attentions", False)
self.output_hidden_states = kwargs.pop("output_hidden_states", False)
self.output_scores = kwargs.pop("output_scores", False)
self.output_logits = kwargs.pop("output_logits", None)
self.return_dict_in_generate = kwargs.pop("return_dict_in_generate", False)
# Special tokens that can be used at generation time
self.pad_token_id = kwargs.pop("pad_token_id", None)
self.bos_token_id = kwargs.pop("bos_token_id", None)
self.eos_token_id = kwargs.pop("eos_token_id", None)
# Generation parameters exclusive to encoder-decoder models
self.encoder_no_repeat_ngram_size = kwargs.pop("encoder_no_repeat_ngram_size", 0)
self.decoder_start_token_id = kwargs.pop("decoder_start_token_id", None)
# Assistant generation
self.num_assistant_tokens = kwargs.pop("num_assistant_tokens", 5)
self.num_assistant_tokens_schedule = kwargs.pop("num_assistant_tokens_schedule", "heuristic")
# Cache implementation
self.cache_implementation = kwargs.pop("cache_implementation", None)
# Prompt lookup decoding
self.prompt_lookup_num_tokens = kwargs.pop("prompt_lookup_num_tokens", None)
self.max_matching_ngram_size = kwargs.pop("max_matching_ngram_size", None)
# Wild card
self.generation_kwargs = kwargs.pop("generation_kwargs", {})
# The remaining attributes do not parametrize `.generate()`, but are informative and/or used by the hub
# interface.
self._from_model_config = kwargs.pop("_from_model_config", False)
self._commit_hash = kwargs.pop("_commit_hash", None)
self.transformers_version = kwargs.pop("transformers_version", __version__)
# Additional attributes without default values
if not self._from_model_config:
# we don't want to copy values from the model config if we're initializing a `GenerationConfig` from a
# model's default configuration file
for key, value in kwargs.items():
try:
setattr(self, key, value)
except AttributeError as err:
logger.error(f"Can't set {key} with value {value} for {self}")
raise err
# Validate the values of the attributes
self.validate(is_init=True)
def __hash__(self):
return hash(self.to_json_string(ignore_metadata=True))
def __eq__(self, other):
if not isinstance(other, GenerationConfig):
return False
self_without_metadata = self.to_json_string(use_diff=False, ignore_metadata=True)
other_without_metadata = other.to_json_string(use_diff=False, ignore_metadata=True)
return self_without_metadata == other_without_metadata
def __repr__(self):
return f"{self.__class__.__name__} {self.to_json_string(ignore_metadata=True)}"
def get_generation_mode(self, assistant_model: Optional["PreTrainedModel"] = None) -> GenerationMode:
"""
Returns the generation mode triggered by the [`GenerationConfig`] instance.
Arg:
assistant_model (`PreTrainedModel`, *optional*):
The assistant model to be used for assisted generation. If set, the generation mode will be
assisted generation.
Returns:
`GenerationMode`: The generation mode triggered by the instance.
"""
# TODO joao: find out a way of not depending on external fields (e.g. `assistant_model`), then make this a
# property and part of the `__repr__`
if self.constraints is not None or self.force_words_ids is not None:
generation_mode = GenerationMode.CONSTRAINED_BEAM_SEARCH
elif self.num_beams == 1:
if self.do_sample is False:
if (
self.top_k is not None
and self.top_k > 1
and self.penalty_alpha is not None
and self.penalty_alpha > 0
):
generation_mode = GenerationMode.CONTRASTIVE_SEARCH
else:
generation_mode = GenerationMode.GREEDY_SEARCH
else:
generation_mode = GenerationMode.SAMPLE
else:
if self.num_beam_groups > 1:
generation_mode = GenerationMode.GROUP_BEAM_SEARCH
elif self.do_sample is True:
generation_mode = GenerationMode.BEAM_SAMPLE
else:
generation_mode = GenerationMode.BEAM_SEARCH
# Assisted generation may extend some generation modes
if assistant_model is not None or self.prompt_lookup_num_tokens is not None:
if generation_mode in ("greedy_search", "sample"):
generation_mode = GenerationMode.ASSISTED_GENERATION
else:
raise ValueError(
"You've set `assistant_model`, which triggers assisted generate. Currently, assisted generate "
"is only supported with Greedy Search and Sample."
)
return generation_mode
def validate(self, is_init=False):
"""
Validates the values of the attributes of the [`GenerationConfig`] instance. Raises exceptions in the presence
of parameterization that can be detected as incorrect from the configuration instance alone.
Note that some parameters not validated here are best validated at generate runtime, as they may depend on
other inputs and/or the model, such as parameters related to the generation length.
Arg:
is_init (`bool`, *optional*, defaults to `False`):
Whether the validation is performed during the initialization of the instance.
"""
# Validation of individual attributes
if self.early_stopping not in {True, False, "never"}:
raise ValueError(f"`early_stopping` must be a boolean or 'never', but is {self.early_stopping}.")
if self.max_new_tokens is not None and self.max_new_tokens <= 0:
raise ValueError(f"`max_new_tokens` must be greater than 0, but is {self.max_new_tokens}.")
# Validation of attribute relations:
fix_location = ""
if is_init:
fix_location = (
" This was detected when initializing the generation config instance, which means the corresponding "
"file may hold incorrect parameterization and should be fixed."
)
# 1. detect sampling-only parameterization when not in sampling mode
if self.do_sample is False:
greedy_wrong_parameter_msg = (
"`do_sample` is set to `False`. However, `{flag_name}` is set to `{flag_value}` -- this flag is only "
"used in sample-based generation modes. You should set `do_sample=True` or unset `{flag_name}`."
+ fix_location
)
if self.temperature is not None and self.temperature != 1.0:
warnings.warn(
greedy_wrong_parameter_msg.format(flag_name="temperature", flag_value=self.temperature),
UserWarning,
)
if self.top_p is not None and self.top_p != 1.0:
warnings.warn(
greedy_wrong_parameter_msg.format(flag_name="top_p", flag_value=self.top_p),
UserWarning,
)
if self.typical_p is not None and self.typical_p != 1.0:
warnings.warn(
greedy_wrong_parameter_msg.format(flag_name="typical_p", flag_value=self.typical_p),
UserWarning,
)
if (
self.top_k is not None and self.top_k != 50 and self.penalty_alpha is None
): # contrastive search uses top_k
warnings.warn(
greedy_wrong_parameter_msg.format(flag_name="top_k", flag_value=self.top_k),
UserWarning,
)
if self.epsilon_cutoff is not None and self.epsilon_cutoff != 0.0:
warnings.warn(
greedy_wrong_parameter_msg.format(flag_name="epsilon_cutoff", flag_value=self.epsilon_cutoff),
UserWarning,
)
if self.eta_cutoff is not None and self.eta_cutoff != 0.0:
warnings.warn(
greedy_wrong_parameter_msg.format(flag_name="eta_cutoff", flag_value=self.eta_cutoff),
UserWarning,
)
# 2. detect beam-only parameterization when not in beam mode
if self.num_beams is None:
warnings.warn("`num_beams` is set to None - defaulting to 1.", UserWarning)
self.num_beams = 1
if self.num_beams == 1:
single_beam_wrong_parameter_msg = (
"`num_beams` is set to 1. However, `{flag_name}` is set to `{flag_value}` -- this flag is only used "
"in beam-based generation modes. You should set `num_beams>1` or unset `{flag_name}`." + fix_location
)
if self.early_stopping is not False:
warnings.warn(
single_beam_wrong_parameter_msg.format(flag_name="early_stopping", flag_value=self.early_stopping),
UserWarning,
)
if self.num_beam_groups is not None and self.num_beam_groups != 1:
warnings.warn(
single_beam_wrong_parameter_msg.format(
flag_name="num_beam_groups", flag_value=self.num_beam_groups
),
UserWarning,
)
if self.diversity_penalty is not None and self.diversity_penalty != 0.0:
warnings.warn(
single_beam_wrong_parameter_msg.format(
flag_name="diversity_penalty", flag_value=self.diversity_penalty
),
UserWarning,
)
if self.length_penalty is not None and self.length_penalty != 1.0:
warnings.warn(
single_beam_wrong_parameter_msg.format(flag_name="length_penalty", flag_value=self.length_penalty),
UserWarning,
)
if self.constraints is not None:
warnings.warn(
single_beam_wrong_parameter_msg.format(flag_name="constraints", flag_value=self.constraints),
UserWarning,
)
# 3. detect incorrect paramaterization specific to advanced beam modes
else:
# constrained beam search
if self.constraints is not None or self.force_words_ids is not None:
constrained_wrong_parameter_msg = (
"one of `constraints`, `force_words_ids` is not `None`, triggering constrained beam search. However, "
"`{flag_name}` is set to `{flag_value}`, which is incompatible with this generation mode. Set "
"`constraints` and `force_words_ids` to `None` or unset `{flag_name}` to continue." + fix_location
)
if self.do_sample is True:
raise ValueError(
constrained_wrong_parameter_msg.format(flag_name="do_sample", flag_value=self.do_sample)
)
if self.num_beam_groups is not None and self.num_beam_groups != 1:
raise ValueError(
constrained_wrong_parameter_msg.format(
flag_name="num_beam_groups", flag_value=self.num_beam_groups
)
)
# group beam search
if self.diversity_penalty != 0.0 or self.num_beam_groups != 1:
group_error_prefix = (
"`diversity_penalty` is not 0.0 or `num_beam_groups` is not 1, triggering group beam search. In "
"this generation mode, "
)
if self.do_sample is True:
raise ValueError(group_error_prefix + "`do_sample` must be set to `False`")
if self.num_beams % self.num_beam_groups != 0:
raise ValueError(group_error_prefix + "`num_beams` should be divisible by `num_beam_groups`")
if self.diversity_penalty == 0.0:
raise ValueError(
group_error_prefix
+ "`diversity_penalty` should be greater than `0.0`, otherwise your groups will be identical."
)
# 4. check `num_return_sequences`
if self.num_return_sequences != 1:
if self.num_beams == 1:
if self.do_sample is False:
raise ValueError(
"Greedy methods without beam search do not support `num_return_sequences` different than 1 "
f"(got {self.num_return_sequences})."
)
elif self.num_return_sequences > self.num_beams:
raise ValueError(
f"`num_return_sequences` ({self.num_return_sequences}) has to be smaller or equal to `num_beams` "
f"({self.num_beams})."
)
# 5. check common issue: passing `generate` arguments inside the generation config
generate_arguments = (
"logits_processor",
"stopping_criteria",
"prefix_allowed_tokens_fn",
"synced_gpus",
"assistant_model",
"streamer",
"negative_prompt_ids",
"negative_prompt_attention_mask",
)
for arg in generate_arguments:
if hasattr(self, arg):
raise ValueError(
f"Argument `{arg}` is not a valid argument of `GenerationConfig`. It should be passed to "
"`generate()` (or a pipeline) directly."
)
def save_pretrained(
self,
save_directory: Union[str, os.PathLike],
config_file_name: Optional[Union[str, os.PathLike]] = None,
push_to_hub: bool = False,
**kwargs,
):
r"""
Save a generation configuration object to the directory `save_directory`, so that it can be re-loaded using the
[`~GenerationConfig.from_pretrained`] class method.
Args:
save_directory (`str` or `os.PathLike`):
Directory where the configuration JSON file will be saved (will be created if it does not exist).
config_file_name (`str` or `os.PathLike`, *optional*, defaults to `"generation_config.json"`):
Name of the generation configuration JSON file to be saved in `save_directory`.
push_to_hub (`bool`, *optional*, defaults to `False`):
Whether or not to push your model to the Hugging Face model hub after saving it. You can specify the
repository you want to push to with `repo_id` (will default to the name of `save_directory` in your
namespace).
kwargs (`Dict[str, Any]`, *optional*):
Additional key word arguments passed along to the [`~utils.PushToHubMixin.push_to_hub`] method.
"""
# At save time, validate the instance -- if any warning/exception is thrown, we refuse to save the instance.
# This strictness is enforced to prevent bad configurations from being saved and re-used.
try:
with warnings.catch_warnings(record=True) as caught_warnings:
self.validate()
if len(caught_warnings) > 0:
raise ValueError(str([w.message for w in caught_warnings]))
except ValueError as exc:
raise ValueError(
"The generation config instance is invalid -- `.validate()` throws warnings and/or exceptions. "
"Fix these issues to save the configuration.\n\nThrown during validation:\n" + str(exc)
)
use_auth_token = kwargs.pop("use_auth_token", None)
if use_auth_token is not None:
warnings.warn(
"The `use_auth_token` argument is deprecated and will be removed in v5 of Transformers. Please use `token` instead.",
FutureWarning,
)
if kwargs.get("token", None) is not None:
raise ValueError(
"`token` and `use_auth_token` are both specified. Please set only the argument `token`."
)
kwargs["token"] = use_auth_token
config_file_name = config_file_name if config_file_name is not None else GENERATION_CONFIG_NAME
if os.path.isfile(save_directory):
raise AssertionError(f"Provided path ({save_directory}) should be a directory, not a file")
os.makedirs(save_directory, exist_ok=True)
if push_to_hub:
commit_message = kwargs.pop("commit_message", None)
repo_id = kwargs.pop("repo_id", save_directory.split(os.path.sep)[-1])
repo_id = self._create_repo(repo_id, **kwargs)
files_timestamps = self._get_files_timestamps(save_directory)
output_config_file = os.path.join(save_directory, config_file_name)
self.to_json_file(output_config_file, use_diff=True)
logger.info(f"Configuration saved in {output_config_file}")
if push_to_hub:
self._upload_modified_files(
save_directory,
repo_id,
files_timestamps,
commit_message=commit_message,
token=kwargs.get("token"),
)
@classmethod
def from_pretrained(
cls,
pretrained_model_name: Union[str, os.PathLike],
config_file_name: Optional[Union[str, os.PathLike]] = None,
cache_dir: Optional[Union[str, os.PathLike]] = None,
force_download: bool = False,
local_files_only: bool = False,
token: Optional[Union[str, bool]] = None,
revision: str = "main",
**kwargs,
) -> "GenerationConfig":
r"""
Instantiate a [`GenerationConfig`] from a generation configuration file.
Args:
pretrained_model_name (`str` or `os.PathLike`):
This can be either:
- a string, the *model id* of a pretrained model configuration hosted inside a model repo on
huggingface.co.
- a path to a *directory* containing a configuration file saved using the
[`~GenerationConfig.save_pretrained`] method, e.g., `./my_model_directory/`.
config_file_name (`str` or `os.PathLike`, *optional*, defaults to `"generation_config.json"`):
Name of the generation configuration JSON file to be loaded from `pretrained_model_name`.
cache_dir (`str` or `os.PathLike`, *optional*):
Path to a directory in which a downloaded pretrained model configuration should be cached if the
standard cache should not be used.
force_download (`bool`, *optional*, defaults to `False`):
Whether or not to force to (re-)download the configuration files and override the cached versions if
they exist.
resume_download (`bool`, *optional*, defaults to `False`):
Whether or not to delete incompletely received file. Attempts to resume the download if such a file
exists.
proxies (`Dict[str, str]`, *optional*):
A dictionary of proxy servers to use by protocol or endpoint, e.g., `{'http': 'foo.bar:3128',
'http://hostname': 'foo.bar:4012'}.` The proxies are used on each request.
token (`str` or `bool`, *optional*):
The token to use as HTTP bearer authorization for remote files. If `True`, or not specified, will use
the token generated when running `huggingface-cli login` (stored in `~/.huggingface`).
revision (`str`, *optional*, defaults to `"main"`):
The specific model version to use. It can be a branch name, a tag name, or a commit id, since we use a
git-based system for storing models and other artifacts on huggingface.co, so `revision` can be any
identifier allowed by git.
<Tip>
To test a pull request you made on the Hub, you can pass `revision="refs/pr/<pr_number>".
</Tip>
return_unused_kwargs (`bool`, *optional*, defaults to `False`):
If `False`, then this function returns just the final configuration object.
If `True`, then this functions returns a `Tuple(config, unused_kwargs)` where *unused_kwargs* is a
dictionary consisting of the key/value pairs whose keys are not configuration attributes: i.e., the
part of `kwargs` which has not been used to update `config` and is otherwise ignored.
subfolder (`str`, *optional*, defaults to `""`):
In case the relevant files are located inside a subfolder of the model repo on huggingface.co, you can
specify the folder name here.
kwargs (`Dict[str, Any]`, *optional*):
The values in kwargs of any keys which are configuration attributes will be used to override the loaded
values. Behavior concerning key/value pairs whose keys are *not* configuration attributes is controlled
by the `return_unused_kwargs` keyword parameter.
Returns:
[`GenerationConfig`]: The configuration object instantiated from this pretrained model.
Examples:
```python
>>> from transformers import GenerationConfig
>>> # Download configuration from huggingface.co and cache.
>>> generation_config = GenerationConfig.from_pretrained("openai-community/gpt2")
>>> # E.g. config was saved using *save_pretrained('./test/saved_model/')*
>>> generation_config.save_pretrained("./test/saved_model/")
>>> generation_config = GenerationConfig.from_pretrained("./test/saved_model/")
>>> # You can also specify configuration names to your generation configuration file
>>> generation_config.save_pretrained("./test/saved_model/", config_file_name="my_configuration.json")
>>> generation_config = GenerationConfig.from_pretrained("./test/saved_model/", "my_configuration.json")
>>> # If you'd like to try a minor variation to an existing configuration, you can also pass generation
>>> # arguments to `.from_pretrained()`. Be mindful that typos and unused arguments will be ignored
>>> generation_config, unused_kwargs = GenerationConfig.from_pretrained(
... "openai-community/gpt2", top_k=1, foo=False, do_sample=True, return_unused_kwargs=True
... )
>>> generation_config.top_k
1
>>> unused_kwargs
{'foo': False}
```"""
config_file_name = config_file_name if config_file_name is not None else GENERATION_CONFIG_NAME
resume_download = kwargs.pop("resume_download", False)
proxies = kwargs.pop("proxies", None)
use_auth_token = kwargs.pop("use_auth_token", None)
subfolder = kwargs.pop("subfolder", "")
from_pipeline = kwargs.pop("_from_pipeline", None)
from_auto_class = kwargs.pop("_from_auto", False)
commit_hash = kwargs.pop("_commit_hash", None)
if use_auth_token is not None:
warnings.warn(
"The `use_auth_token` argument is deprecated and will be removed in v5 of Transformers. Please use `token` instead.",
FutureWarning,
)
if token is not None:
raise ValueError(
"`token` and `use_auth_token` are both specified. Please set only the argument `token`."
)
token = use_auth_token
user_agent = {"file_type": "config", "from_auto_class": from_auto_class}
if from_pipeline is not None:
user_agent["using_pipeline"] = from_pipeline
config_path = os.path.join(pretrained_model_name, config_file_name)
config_path = str(config_path)
is_local = os.path.exists(config_path)
if os.path.isfile(os.path.join(subfolder, config_path)):
# Special case when config_path is a local file
resolved_config_file = config_path
is_local = True
elif is_remote_url(config_path):
configuration_file = config_path
resolved_config_file = download_url(config_path)
else:
configuration_file = config_file_name
try:
# Load from local folder or from cache or download from model Hub and cache
resolved_config_file = cached_file(
pretrained_model_name,
configuration_file,
cache_dir=cache_dir,
force_download=force_download,
proxies=proxies,
resume_download=resume_download,
local_files_only=local_files_only,
token=token,
user_agent=user_agent,
revision=revision,
subfolder=subfolder,
_commit_hash=commit_hash,
)
commit_hash = extract_commit_hash(resolved_config_file, commit_hash)
except EnvironmentError:
# Raise any environment error raise by `cached_file`. It will have a helpful error message adapted to
# the original exception.
raise
except Exception:
# For any other exception, we throw a generic error.
raise EnvironmentError(
f"Can't load the configuration of '{pretrained_model_name}'. If you were trying to load it"
" from 'https://huggingface.co/models', make sure you don't have a local directory with the same"
f" name. Otherwise, make sure '{pretrained_model_name}' is the correct path to a directory"
f" containing a {configuration_file} file"
)
try:
# Load config dict
config_dict = cls._dict_from_json_file(resolved_config_file)
config_dict["_commit_hash"] = commit_hash
except (json.JSONDecodeError, UnicodeDecodeError):
raise EnvironmentError(
f"It looks like the config file at '{resolved_config_file}' is not a valid JSON file."
)
if is_local:
logger.info(f"loading configuration file {resolved_config_file}")
else:
logger.info(f"loading configuration file {configuration_file} from cache at {resolved_config_file}")
if kwargs.get("return_unused_kwargs") is True:
config, unused_kwargs = cls.from_dict(config_dict, **kwargs)
config._original_object_hash = hash(config) # Hash to detect whether the instance was modified
return config, unused_kwargs
else:
config = cls.from_dict(config_dict, **kwargs)
config._original_object_hash = hash(config) # Hash to detect whether the instance was modified
return config
@classmethod
def _dict_from_json_file(cls, json_file: Union[str, os.PathLike]):
with open(json_file, "r", encoding="utf-8") as reader:
text = reader.read()
return json.loads(text)
@classmethod
def from_dict(cls, config_dict: Dict[str, Any], **kwargs) -> "GenerationConfig":
"""
Instantiates a [`GenerationConfig`] from a Python dictionary of parameters.
Args:
config_dict (`Dict[str, Any]`):
Dictionary that will be used to instantiate the configuration object.
kwargs (`Dict[str, Any]`):
Additional parameters from which to initialize the configuration object.
Returns:
[`GenerationConfig`]: The configuration object instantiated from those parameters.
"""
return_unused_kwargs = kwargs.pop("return_unused_kwargs", False)
# Those arguments may be passed along for our internal telemetry.
# We remove them so they don't appear in `return_unused_kwargs`.
kwargs.pop("_from_auto", None)
kwargs.pop("_from_pipeline", None)
# The commit hash might have been updated in the `config_dict`, we don't want the kwargs to erase that update.
if "_commit_hash" in kwargs and "_commit_hash" in config_dict:
kwargs["_commit_hash"] = config_dict["_commit_hash"]
# The line below allows model-specific config to be loaded as well through kwargs, with safety checks.
# See https://github.com/huggingface/transformers/pull/21269
config = cls(**{**config_dict, **kwargs})
unused_kwargs = config.update(**kwargs)
logger.info(f"Generate config {config}")
if return_unused_kwargs:
return config, unused_kwargs
else:
return config
def dict_torch_dtype_to_str(self, d: Dict[str, Any]) -> None:
"""
Checks whether the passed dictionary and its nested dicts have a *torch_dtype* key and if it's not None,
converts torch.dtype to a string of just the type. For example, `torch.float32` get converted into *"float32"*
string, which can then be stored in the json format.
"""
if d.get("torch_dtype", None) is not None and not isinstance(d["torch_dtype"], str):
d["torch_dtype"] = str(d["torch_dtype"]).split(".")[1]
for value in d.values():
if isinstance(value, dict):
self.dict_torch_dtype_to_str(value)
def to_diff_dict(self) -> Dict[str, Any]:
"""
Removes all attributes from config which correspond to the default config attributes for better readability and
serializes to a Python dictionary.
Returns:
`Dict[str, Any]`: Dictionary of all the attributes that make up this configuration instance,
"""
config_dict = self.to_dict()
# get the default config dict
default_config_dict = GenerationConfig().to_dict()
serializable_config_dict = {}
# only serialize values that differ from the default config
for key, value in config_dict.items():
if key not in default_config_dict or key == "transformers_version" or value != default_config_dict[key]:
serializable_config_dict[key] = value
self.dict_torch_dtype_to_str(serializable_config_dict)
return serializable_config_dict
def to_dict(self) -> Dict[str, Any]:
"""
Serializes this instance to a Python dictionary.
Returns:
`Dict[str, Any]`: Dictionary of all the attributes that make up this configuration instance.
"""
output = copy.deepcopy(self.__dict__)
# Fields to ignore at serialization time
if "_commit_hash" in output:
del output["_commit_hash"]
if "_original_object_hash" in output:
del output["_original_object_hash"]
# Transformers version when serializing this file
output["transformers_version"] = __version__
self.dict_torch_dtype_to_str(output)
return output
def to_json_string(self, use_diff: bool = True, ignore_metadata: bool = False) -> str:
"""
Serializes this instance to a JSON string.
Args:
use_diff (`bool`, *optional*, defaults to `True`):
If set to `True`, only the difference between the config instance and the default `GenerationConfig()`
is serialized to JSON string.
ignore_metadata (`bool`, *optional*, defaults to `False`):
Whether to ignore the metadata fields present in the instance
Returns:
`str`: String containing all the attributes that make up this configuration instance in JSON format.
"""
if use_diff is True:
config_dict = self.to_diff_dict()
else:
config_dict = self.to_dict()
if ignore_metadata:
for metadata_field in METADATA_FIELDS:
config_dict.pop(metadata_field, None)
def convert_keys_to_string(obj):
if isinstance(obj, dict):
return {str(key): convert_keys_to_string(value) for key, value in obj.items()}
elif isinstance(obj, list):
return [convert_keys_to_string(item) for item in obj]
else:
return obj
config_dict = convert_keys_to_string(config_dict)
return json.dumps(config_dict, indent=2, sort_keys=True) + "\n"
def to_json_file(self, json_file_path: Union[str, os.PathLike], use_diff: bool = True):
"""
Save this instance to a JSON file.
Args:
json_file_path (`str` or `os.PathLike`):
Path to the JSON file in which this configuration instance's parameters will be saved.
use_diff (`bool`, *optional*, defaults to `True`):
If set to `True`, only the difference between the config instance and the default `GenerationConfig()`
is serialized to JSON file.
"""
with open(json_file_path, "w", encoding="utf-8") as writer:
writer.write(self.to_json_string(use_diff=use_diff))
@classmethod
def from_model_config(cls, model_config: PretrainedConfig) -> "GenerationConfig":
"""
Instantiates a [`GenerationConfig`] from a [`PretrainedConfig`]. This function is useful to convert legacy
[`PretrainedConfig`] objects, which may contain generation parameters, into a stand-alone [`GenerationConfig`].
Args:
model_config (`PretrainedConfig`):
The model config that will be used to instantiate the generation config.
Returns:
[`GenerationConfig`]: The configuration object instantiated from those parameters.
"""
config_dict = model_config.to_dict()
config_dict.pop("_from_model_config", None)
config = cls.from_dict(config_dict, return_unused_kwargs=False, _from_model_config=True)
# Special case: some models have generation attributes set in the decoder. Use them if still unset in the
# generation config.
for decoder_name in ("decoder", "generator", "text_config"):
if decoder_name in config_dict:
default_generation_config = GenerationConfig()
decoder_config = config_dict[decoder_name]
for attr in config.to_dict().keys():
if attr in decoder_config and getattr(config, attr) == getattr(default_generation_config, attr):
setattr(config, attr, decoder_config[attr])
config._original_object_hash = hash(config) # Hash to detect whether the instance was modified
return config
def update(self, **kwargs):
"""
Updates attributes of this class instance with attributes from `kwargs` if they match existing atributtes,
returning all the unused kwargs.
Args:
kwargs (`Dict[str, Any]`):
Dictionary of attributes to tentatively update this class.
Returns:
`Dict[str, Any]`: Dictionary containing all the key-value pairs that were not used to update the instance.
"""
to_remove = []
for key, value in kwargs.items():
if hasattr(self, key):
setattr(self, key, value)
to_remove.append(key)
# Confirm that the updated instance is still valid
self.validate()
# Remove all the attributes that were updated, without modifying the input dict
unused_kwargs = {key: value for key, value in kwargs.items() if key not in to_remove}
return unused_kwargs
| transformers/src/transformers/generation/configuration_utils.py/0 | {
"file_path": "transformers/src/transformers/generation/configuration_utils.py",
"repo_id": "transformers",
"token_count": 23873
} | 306 |
# coding=utf-8
# Copyright 2021 The HuggingFace Inc. team.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import base64
import os
from io import BytesIO
from typing import TYPE_CHECKING, Dict, Iterable, List, Optional, Tuple, Union
import numpy as np
import requests
from packaging import version
from .utils import (
ExplicitEnum,
is_jax_tensor,
is_tf_tensor,
is_torch_available,
is_torch_tensor,
is_vision_available,
logging,
requires_backends,
to_numpy,
)
from .utils.constants import ( # noqa: F401
IMAGENET_DEFAULT_MEAN,
IMAGENET_DEFAULT_STD,
IMAGENET_STANDARD_MEAN,
IMAGENET_STANDARD_STD,
OPENAI_CLIP_MEAN,
OPENAI_CLIP_STD,
)
if is_vision_available():
import PIL.Image
import PIL.ImageOps
if version.parse(version.parse(PIL.__version__).base_version) >= version.parse("9.1.0"):
PILImageResampling = PIL.Image.Resampling
else:
PILImageResampling = PIL.Image
if TYPE_CHECKING:
if is_torch_available():
import torch
logger = logging.get_logger(__name__)
ImageInput = Union[
"PIL.Image.Image", np.ndarray, "torch.Tensor", List["PIL.Image.Image"], List[np.ndarray], List["torch.Tensor"]
] # noqa
class ChannelDimension(ExplicitEnum):
FIRST = "channels_first"
LAST = "channels_last"
class AnnotationFormat(ExplicitEnum):
COCO_DETECTION = "coco_detection"
COCO_PANOPTIC = "coco_panoptic"
class AnnotionFormat(ExplicitEnum):
COCO_DETECTION = AnnotationFormat.COCO_DETECTION.value
COCO_PANOPTIC = AnnotationFormat.COCO_PANOPTIC.value
AnnotationType = Dict[str, Union[int, str, List[Dict]]]
def is_pil_image(img):
return is_vision_available() and isinstance(img, PIL.Image.Image)
def is_valid_image(img):
return (
(is_vision_available() and isinstance(img, PIL.Image.Image))
or isinstance(img, np.ndarray)
or is_torch_tensor(img)
or is_tf_tensor(img)
or is_jax_tensor(img)
)
def valid_images(imgs):
# If we have an list of images, make sure every image is valid
if isinstance(imgs, (list, tuple)):
for img in imgs:
if not valid_images(img):
return False
# If not a list of tuple, we have been given a single image or batched tensor of images
elif not is_valid_image(imgs):
return False
return True
def is_batched(img):
if isinstance(img, (list, tuple)):
return is_valid_image(img[0])
return False
def is_scaled_image(image: np.ndarray) -> bool:
"""
Checks to see whether the pixel values have already been rescaled to [0, 1].
"""
if image.dtype == np.uint8:
return False
# It's possible the image has pixel values in [0, 255] but is of floating type
return np.min(image) >= 0 and np.max(image) <= 1
def make_list_of_images(images, expected_ndims: int = 3) -> List[ImageInput]:
"""
Ensure that the input is a list of images. If the input is a single image, it is converted to a list of length 1.
If the input is a batch of images, it is converted to a list of images.
Args:
images (`ImageInput`):
Image of images to turn into a list of images.
expected_ndims (`int`, *optional*, defaults to 3):
Expected number of dimensions for a single input image. If the input image has a different number of
dimensions, an error is raised.
"""
if is_batched(images):
return images
# Either the input is a single image, in which case we create a list of length 1
if isinstance(images, PIL.Image.Image):
# PIL images are never batched
return [images]
if is_valid_image(images):
if images.ndim == expected_ndims + 1:
# Batch of images
images = list(images)
elif images.ndim == expected_ndims:
# Single image
images = [images]
else:
raise ValueError(
f"Invalid image shape. Expected either {expected_ndims + 1} or {expected_ndims} dimensions, but got"
f" {images.ndim} dimensions."
)
return images
raise ValueError(
"Invalid image type. Expected either PIL.Image.Image, numpy.ndarray, torch.Tensor, tf.Tensor or "
f"jax.ndarray, but got {type(images)}."
)
def to_numpy_array(img) -> np.ndarray:
if not is_valid_image(img):
raise ValueError(f"Invalid image type: {type(img)}")
if is_vision_available() and isinstance(img, PIL.Image.Image):
return np.array(img)
return to_numpy(img)
def infer_channel_dimension_format(
image: np.ndarray, num_channels: Optional[Union[int, Tuple[int, ...]]] = None
) -> ChannelDimension:
"""
Infers the channel dimension format of `image`.
Args:
image (`np.ndarray`):
The image to infer the channel dimension of.
num_channels (`int` or `Tuple[int, ...]`, *optional*, defaults to `(1, 3)`):
The number of channels of the image.
Returns:
The channel dimension of the image.
"""
num_channels = num_channels if num_channels is not None else (1, 3)
num_channels = (num_channels,) if isinstance(num_channels, int) else num_channels
if image.ndim == 3:
first_dim, last_dim = 0, 2
elif image.ndim == 4:
first_dim, last_dim = 1, 3
else:
raise ValueError(f"Unsupported number of image dimensions: {image.ndim}")
if image.shape[first_dim] in num_channels:
return ChannelDimension.FIRST
elif image.shape[last_dim] in num_channels:
return ChannelDimension.LAST
raise ValueError("Unable to infer channel dimension format")
def get_channel_dimension_axis(
image: np.ndarray, input_data_format: Optional[Union[ChannelDimension, str]] = None
) -> int:
"""
Returns the channel dimension axis of the image.
Args:
image (`np.ndarray`):
The image to get the channel dimension axis of.
input_data_format (`ChannelDimension` or `str`, *optional*):
The channel dimension format of the image. If `None`, will infer the channel dimension from the image.
Returns:
The channel dimension axis of the image.
"""
if input_data_format is None:
input_data_format = infer_channel_dimension_format(image)
if input_data_format == ChannelDimension.FIRST:
return image.ndim - 3
elif input_data_format == ChannelDimension.LAST:
return image.ndim - 1
raise ValueError(f"Unsupported data format: {input_data_format}")
def get_image_size(image: np.ndarray, channel_dim: ChannelDimension = None) -> Tuple[int, int]:
"""
Returns the (height, width) dimensions of the image.
Args:
image (`np.ndarray`):
The image to get the dimensions of.
channel_dim (`ChannelDimension`, *optional*):
Which dimension the channel dimension is in. If `None`, will infer the channel dimension from the image.
Returns:
A tuple of the image's height and width.
"""
if channel_dim is None:
channel_dim = infer_channel_dimension_format(image)
if channel_dim == ChannelDimension.FIRST:
return image.shape[-2], image.shape[-1]
elif channel_dim == ChannelDimension.LAST:
return image.shape[-3], image.shape[-2]
else:
raise ValueError(f"Unsupported data format: {channel_dim}")
def is_valid_annotation_coco_detection(annotation: Dict[str, Union[List, Tuple]]) -> bool:
if (
isinstance(annotation, dict)
and "image_id" in annotation
and "annotations" in annotation
and isinstance(annotation["annotations"], (list, tuple))
and (
# an image can have no annotations
len(annotation["annotations"]) == 0 or isinstance(annotation["annotations"][0], dict)
)
):
return True
return False
def is_valid_annotation_coco_panoptic(annotation: Dict[str, Union[List, Tuple]]) -> bool:
if (
isinstance(annotation, dict)
and "image_id" in annotation
and "segments_info" in annotation
and "file_name" in annotation
and isinstance(annotation["segments_info"], (list, tuple))
and (
# an image can have no segments
len(annotation["segments_info"]) == 0 or isinstance(annotation["segments_info"][0], dict)
)
):
return True
return False
def valid_coco_detection_annotations(annotations: Iterable[Dict[str, Union[List, Tuple]]]) -> bool:
return all(is_valid_annotation_coco_detection(ann) for ann in annotations)
def valid_coco_panoptic_annotations(annotations: Iterable[Dict[str, Union[List, Tuple]]]) -> bool:
return all(is_valid_annotation_coco_panoptic(ann) for ann in annotations)
def load_image(image: Union[str, "PIL.Image.Image"], timeout: Optional[float] = None) -> "PIL.Image.Image":
"""
Loads `image` to a PIL Image.
Args:
image (`str` or `PIL.Image.Image`):
The image to convert to the PIL Image format.
timeout (`float`, *optional*):
The timeout value in seconds for the URL request.
Returns:
`PIL.Image.Image`: A PIL Image.
"""
requires_backends(load_image, ["vision"])
if isinstance(image, str):
if image.startswith("http://") or image.startswith("https://"):
# We need to actually check for a real protocol, otherwise it's impossible to use a local file
# like http_huggingface_co.png
image = PIL.Image.open(requests.get(image, stream=True, timeout=timeout).raw)
elif os.path.isfile(image):
image = PIL.Image.open(image)
else:
if image.startswith("data:image/"):
image = image.split(",")[1]
# Try to load as base64
try:
b64 = base64.b64decode(image, validate=True)
image = PIL.Image.open(BytesIO(b64))
except Exception as e:
raise ValueError(
f"Incorrect image source. Must be a valid URL starting with `http://` or `https://`, a valid path to an image file, or a base64 encoded string. Got {image}. Failed with {e}"
)
elif isinstance(image, PIL.Image.Image):
image = image
else:
raise ValueError(
"Incorrect format used for image. Should be an url linking to an image, a base64 string, a local path, or a PIL image."
)
image = PIL.ImageOps.exif_transpose(image)
image = image.convert("RGB")
return image
def validate_preprocess_arguments(
do_rescale: Optional[bool] = None,
rescale_factor: Optional[float] = None,
do_normalize: Optional[bool] = None,
image_mean: Optional[Union[float, List[float]]] = None,
image_std: Optional[Union[float, List[float]]] = None,
do_pad: Optional[bool] = None,
size_divisibility: Optional[int] = None,
do_center_crop: Optional[bool] = None,
crop_size: Optional[Dict[str, int]] = None,
do_resize: Optional[bool] = None,
size: Optional[Dict[str, int]] = None,
resample: Optional["PILImageResampling"] = None,
):
"""
Checks validity of typically used arguments in an `ImageProcessor` `preprocess` method.
Raises `ValueError` if arguments incompatibility is caught.
Many incompatibilities are model-specific. `do_pad` sometimes needs `size_divisor`,
sometimes `size_divisibility`, and sometimes `size`. New models and processors added should follow
existing arguments when possible.
"""
if do_rescale and rescale_factor is None:
raise ValueError("rescale_factor must be specified if do_rescale is True.")
if do_pad and size_divisibility is None:
# Here, size_divisor might be passed as the value of size
raise ValueError(
"Depending on moel, size_divisibility, size_divisor, pad_size or size must be specified if do_pad is True."
)
if do_normalize and (image_mean is None or image_std is None):
raise ValueError("image_mean and image_std must both be specified if do_normalize is True.")
if do_center_crop and crop_size is None:
raise ValueError("crop_size must be specified if do_center_crop is True.")
if do_resize and (size is None or resample is None):
raise ValueError("size and resample must be specified if do_resize is True.")
# In the future we can add a TF implementation here when we have TF models.
class ImageFeatureExtractionMixin:
"""
Mixin that contain utilities for preparing image features.
"""
def _ensure_format_supported(self, image):
if not isinstance(image, (PIL.Image.Image, np.ndarray)) and not is_torch_tensor(image):
raise ValueError(
f"Got type {type(image)} which is not supported, only `PIL.Image.Image`, `np.array` and "
"`torch.Tensor` are."
)
def to_pil_image(self, image, rescale=None):
"""
Converts `image` to a PIL Image. Optionally rescales it and puts the channel dimension back as the last axis if
needed.
Args:
image (`PIL.Image.Image` or `numpy.ndarray` or `torch.Tensor`):
The image to convert to the PIL Image format.
rescale (`bool`, *optional*):
Whether or not to apply the scaling factor (to make pixel values integers between 0 and 255). Will
default to `True` if the image type is a floating type, `False` otherwise.
"""
self._ensure_format_supported(image)
if is_torch_tensor(image):
image = image.numpy()
if isinstance(image, np.ndarray):
if rescale is None:
# rescale default to the array being of floating type.
rescale = isinstance(image.flat[0], np.floating)
# If the channel as been moved to first dim, we put it back at the end.
if image.ndim == 3 and image.shape[0] in [1, 3]:
image = image.transpose(1, 2, 0)
if rescale:
image = image * 255
image = image.astype(np.uint8)
return PIL.Image.fromarray(image)
return image
def convert_rgb(self, image):
"""
Converts `PIL.Image.Image` to RGB format.
Args:
image (`PIL.Image.Image`):
The image to convert.
"""
self._ensure_format_supported(image)
if not isinstance(image, PIL.Image.Image):
return image
return image.convert("RGB")
def rescale(self, image: np.ndarray, scale: Union[float, int]) -> np.ndarray:
"""
Rescale a numpy image by scale amount
"""
self._ensure_format_supported(image)
return image * scale
def to_numpy_array(self, image, rescale=None, channel_first=True):
"""
Converts `image` to a numpy array. Optionally rescales it and puts the channel dimension as the first
dimension.
Args:
image (`PIL.Image.Image` or `np.ndarray` or `torch.Tensor`):
The image to convert to a NumPy array.
rescale (`bool`, *optional*):
Whether or not to apply the scaling factor (to make pixel values floats between 0. and 1.). Will
default to `True` if the image is a PIL Image or an array/tensor of integers, `False` otherwise.
channel_first (`bool`, *optional*, defaults to `True`):
Whether or not to permute the dimensions of the image to put the channel dimension first.
"""
self._ensure_format_supported(image)
if isinstance(image, PIL.Image.Image):
image = np.array(image)
if is_torch_tensor(image):
image = image.numpy()
rescale = isinstance(image.flat[0], np.integer) if rescale is None else rescale
if rescale:
image = self.rescale(image.astype(np.float32), 1 / 255.0)
if channel_first and image.ndim == 3:
image = image.transpose(2, 0, 1)
return image
def expand_dims(self, image):
"""
Expands 2-dimensional `image` to 3 dimensions.
Args:
image (`PIL.Image.Image` or `np.ndarray` or `torch.Tensor`):
The image to expand.
"""
self._ensure_format_supported(image)
# Do nothing if PIL image
if isinstance(image, PIL.Image.Image):
return image
if is_torch_tensor(image):
image = image.unsqueeze(0)
else:
image = np.expand_dims(image, axis=0)
return image
def normalize(self, image, mean, std, rescale=False):
"""
Normalizes `image` with `mean` and `std`. Note that this will trigger a conversion of `image` to a NumPy array
if it's a PIL Image.
Args:
image (`PIL.Image.Image` or `np.ndarray` or `torch.Tensor`):
The image to normalize.
mean (`List[float]` or `np.ndarray` or `torch.Tensor`):
The mean (per channel) to use for normalization.
std (`List[float]` or `np.ndarray` or `torch.Tensor`):
The standard deviation (per channel) to use for normalization.
rescale (`bool`, *optional*, defaults to `False`):
Whether or not to rescale the image to be between 0 and 1. If a PIL image is provided, scaling will
happen automatically.
"""
self._ensure_format_supported(image)
if isinstance(image, PIL.Image.Image):
image = self.to_numpy_array(image, rescale=True)
# If the input image is a PIL image, it automatically gets rescaled. If it's another
# type it may need rescaling.
elif rescale:
if isinstance(image, np.ndarray):
image = self.rescale(image.astype(np.float32), 1 / 255.0)
elif is_torch_tensor(image):
image = self.rescale(image.float(), 1 / 255.0)
if isinstance(image, np.ndarray):
if not isinstance(mean, np.ndarray):
mean = np.array(mean).astype(image.dtype)
if not isinstance(std, np.ndarray):
std = np.array(std).astype(image.dtype)
elif is_torch_tensor(image):
import torch
if not isinstance(mean, torch.Tensor):
mean = torch.tensor(mean)
if not isinstance(std, torch.Tensor):
std = torch.tensor(std)
if image.ndim == 3 and image.shape[0] in [1, 3]:
return (image - mean[:, None, None]) / std[:, None, None]
else:
return (image - mean) / std
def resize(self, image, size, resample=None, default_to_square=True, max_size=None):
"""
Resizes `image`. Enforces conversion of input to PIL.Image.
Args:
image (`PIL.Image.Image` or `np.ndarray` or `torch.Tensor`):
The image to resize.
size (`int` or `Tuple[int, int]`):
The size to use for resizing the image. If `size` is a sequence like (h, w), output size will be
matched to this.
If `size` is an int and `default_to_square` is `True`, then image will be resized to (size, size). If
`size` is an int and `default_to_square` is `False`, then smaller edge of the image will be matched to
this number. i.e, if height > width, then image will be rescaled to (size * height / width, size).
resample (`int`, *optional*, defaults to `PILImageResampling.BILINEAR`):
The filter to user for resampling.
default_to_square (`bool`, *optional*, defaults to `True`):
How to convert `size` when it is a single int. If set to `True`, the `size` will be converted to a
square (`size`,`size`). If set to `False`, will replicate
[`torchvision.transforms.Resize`](https://pytorch.org/vision/stable/transforms.html#torchvision.transforms.Resize)
with support for resizing only the smallest edge and providing an optional `max_size`.
max_size (`int`, *optional*, defaults to `None`):
The maximum allowed for the longer edge of the resized image: if the longer edge of the image is
greater than `max_size` after being resized according to `size`, then the image is resized again so
that the longer edge is equal to `max_size`. As a result, `size` might be overruled, i.e the smaller
edge may be shorter than `size`. Only used if `default_to_square` is `False`.
Returns:
image: A resized `PIL.Image.Image`.
"""
resample = resample if resample is not None else PILImageResampling.BILINEAR
self._ensure_format_supported(image)
if not isinstance(image, PIL.Image.Image):
image = self.to_pil_image(image)
if isinstance(size, list):
size = tuple(size)
if isinstance(size, int) or len(size) == 1:
if default_to_square:
size = (size, size) if isinstance(size, int) else (size[0], size[0])
else:
width, height = image.size
# specified size only for the smallest edge
short, long = (width, height) if width <= height else (height, width)
requested_new_short = size if isinstance(size, int) else size[0]
if short == requested_new_short:
return image
new_short, new_long = requested_new_short, int(requested_new_short * long / short)
if max_size is not None:
if max_size <= requested_new_short:
raise ValueError(
f"max_size = {max_size} must be strictly greater than the requested "
f"size for the smaller edge size = {size}"
)
if new_long > max_size:
new_short, new_long = int(max_size * new_short / new_long), max_size
size = (new_short, new_long) if width <= height else (new_long, new_short)
return image.resize(size, resample=resample)
def center_crop(self, image, size):
"""
Crops `image` to the given size using a center crop. Note that if the image is too small to be cropped to the
size given, it will be padded (so the returned result has the size asked).
Args:
image (`PIL.Image.Image` or `np.ndarray` or `torch.Tensor` of shape (n_channels, height, width) or (height, width, n_channels)):
The image to resize.
size (`int` or `Tuple[int, int]`):
The size to which crop the image.
Returns:
new_image: A center cropped `PIL.Image.Image` or `np.ndarray` or `torch.Tensor` of shape: (n_channels,
height, width).
"""
self._ensure_format_supported(image)
if not isinstance(size, tuple):
size = (size, size)
# PIL Image.size is (width, height) but NumPy array and torch Tensors have (height, width)
if is_torch_tensor(image) or isinstance(image, np.ndarray):
if image.ndim == 2:
image = self.expand_dims(image)
image_shape = image.shape[1:] if image.shape[0] in [1, 3] else image.shape[:2]
else:
image_shape = (image.size[1], image.size[0])
top = (image_shape[0] - size[0]) // 2
bottom = top + size[0] # In case size is odd, (image_shape[0] + size[0]) // 2 won't give the proper result.
left = (image_shape[1] - size[1]) // 2
right = left + size[1] # In case size is odd, (image_shape[1] + size[1]) // 2 won't give the proper result.
# For PIL Images we have a method to crop directly.
if isinstance(image, PIL.Image.Image):
return image.crop((left, top, right, bottom))
# Check if image is in (n_channels, height, width) or (height, width, n_channels) format
channel_first = True if image.shape[0] in [1, 3] else False
# Transpose (height, width, n_channels) format images
if not channel_first:
if isinstance(image, np.ndarray):
image = image.transpose(2, 0, 1)
if is_torch_tensor(image):
image = image.permute(2, 0, 1)
# Check if cropped area is within image boundaries
if top >= 0 and bottom <= image_shape[0] and left >= 0 and right <= image_shape[1]:
return image[..., top:bottom, left:right]
# Otherwise, we may need to pad if the image is too small. Oh joy...
new_shape = image.shape[:-2] + (max(size[0], image_shape[0]), max(size[1], image_shape[1]))
if isinstance(image, np.ndarray):
new_image = np.zeros_like(image, shape=new_shape)
elif is_torch_tensor(image):
new_image = image.new_zeros(new_shape)
top_pad = (new_shape[-2] - image_shape[0]) // 2
bottom_pad = top_pad + image_shape[0]
left_pad = (new_shape[-1] - image_shape[1]) // 2
right_pad = left_pad + image_shape[1]
new_image[..., top_pad:bottom_pad, left_pad:right_pad] = image
top += top_pad
bottom += top_pad
left += left_pad
right += left_pad
new_image = new_image[
..., max(0, top) : min(new_image.shape[-2], bottom), max(0, left) : min(new_image.shape[-1], right)
]
return new_image
def flip_channel_order(self, image):
"""
Flips the channel order of `image` from RGB to BGR, or vice versa. Note that this will trigger a conversion of
`image` to a NumPy array if it's a PIL Image.
Args:
image (`PIL.Image.Image` or `np.ndarray` or `torch.Tensor`):
The image whose color channels to flip. If `np.ndarray` or `torch.Tensor`, the channel dimension should
be first.
"""
self._ensure_format_supported(image)
if isinstance(image, PIL.Image.Image):
image = self.to_numpy_array(image)
return image[::-1, :, :]
def rotate(self, image, angle, resample=None, expand=0, center=None, translate=None, fillcolor=None):
"""
Returns a rotated copy of `image`. This method returns a copy of `image`, rotated the given number of degrees
counter clockwise around its centre.
Args:
image (`PIL.Image.Image` or `np.ndarray` or `torch.Tensor`):
The image to rotate. If `np.ndarray` or `torch.Tensor`, will be converted to `PIL.Image.Image` before
rotating.
Returns:
image: A rotated `PIL.Image.Image`.
"""
resample = resample if resample is not None else PIL.Image.NEAREST
self._ensure_format_supported(image)
if not isinstance(image, PIL.Image.Image):
image = self.to_pil_image(image)
return image.rotate(
angle, resample=resample, expand=expand, center=center, translate=translate, fillcolor=fillcolor
)
def promote_annotation_format(annotation_format: Union[AnnotionFormat, AnnotationFormat]) -> AnnotationFormat:
# can be removed when `AnnotionFormat` is fully deprecated
return AnnotationFormat(annotation_format.value)
def validate_annotations(
annotation_format: AnnotationFormat,
supported_annotation_formats: Tuple[AnnotationFormat, ...],
annotations: List[Dict],
) -> None:
if isinstance(annotation_format, AnnotionFormat):
logger.warning_once(
f"`{annotation_format.__class__.__name__}` is deprecated and will be removed in v4.38. "
f"Please use `{AnnotationFormat.__name__}` instead."
)
annotation_format = promote_annotation_format(annotation_format)
if annotation_format not in supported_annotation_formats:
raise ValueError(f"Unsupported annotation format: {format} must be one of {supported_annotation_formats}")
if annotation_format is AnnotationFormat.COCO_DETECTION:
if not valid_coco_detection_annotations(annotations):
raise ValueError(
"Invalid COCO detection annotations. Annotations must a dict (single image) or list of dicts "
"(batch of images) with the following keys: `image_id` and `annotations`, with the latter "
"being a list of annotations in the COCO format."
)
if annotation_format is AnnotationFormat.COCO_PANOPTIC:
if not valid_coco_panoptic_annotations(annotations):
raise ValueError(
"Invalid COCO panoptic annotations. Annotations must a dict (single image) or list of dicts "
"(batch of images) with the following keys: `image_id`, `file_name` and `segments_info`, with "
"the latter being a list of annotations in the COCO format."
)
def validate_kwargs(valid_processor_keys: List[str], captured_kwargs: List[str]):
unused_keys = set(captured_kwargs).difference(set(valid_processor_keys))
if unused_keys:
unused_key_str = ", ".join(unused_keys)
# TODO raise a warning here instead of simply logging?
logger.warning(f"Unused or unrecognized kwargs: {unused_key_str}.")
| transformers/src/transformers/image_utils.py/0 | {
"file_path": "transformers/src/transformers/image_utils.py",
"repo_id": "transformers",
"token_count": 12650
} | 307 |
#include <stdio.h>
#include <assert.h>
#define MIN_VALUE (-1e38)
template <typename F>
__global__ void kernel_forward(
const int B, const int T, const int C, const F *__restrict__ const _w, const F *__restrict__ const _u,
const F *__restrict__ const _k, const F *__restrict__ const _v, F *__restrict__ const _y
) {
const int idx = blockIdx.x * blockDim.x + threadIdx.x;
const int _b = idx / C;
const int _c = idx % C;
const int _offset = _b * T * C + _c;
F u = _u[_c];
F w = _w[_c];
const F *__restrict__ const k = _k + _offset;
const F *__restrict__ const v = _v + _offset;
F *__restrict__ const y = _y + _offset;
// aa and bb are running sums divided by exp(pp) (to avoid overflow)
F aa = 0, bb = 0, pp = MIN_VALUE;
for (int i = 0; i < T; i++) {
const int ii = i * C;
const F kk = k[ii];
const F vv = v[ii];
F ww = u + kk;
F p = max(pp, ww);
F e1 = exp(pp - p);
F e2 = exp(ww - p);
y[ii] = (e1 * aa + e2 * vv) / (e1 * bb + e2);
ww = w + pp;
p = max(ww, kk);
e1 = exp(ww - p);
e2 = exp(kk - p);
aa = e1 * aa + e2 * vv;
bb = e1 * bb + e2;
pp = p;
}
}
template <typename F>
__global__ void kernel_forward_with_state(
const int B, const int T, const int C, const F *__restrict__ const _w, const F *__restrict__ const _u,
const F *__restrict__ const _k, const F *__restrict__ const _v, F *__restrict__ const _y, F *__restrict__ const _s
) {
const int idx = blockIdx.x * blockDim.x + threadIdx.x;
const int _b = idx / C;
const int _c = idx % C;
const int _offset_s = _b * C * 3 + _c * 3;
const int _offset = _b * T * C + _c;
F u = _u[_c];
F w = _w[_c];
const F *__restrict__ const k = _k + _offset;
const F *__restrict__ const v = _v + _offset;
F *__restrict__ const y = _y + _offset;
F *__restrict__ const s = _s + _offset_s;
// aa and bb are running sums divided by exp(pp) (to avoid overflow)
F aa = s[0], bb = s[1], pp = s[2];
for (int i = 0; i < T; i++) {
const int ii = i * C;
const F kk = k[ii];
const F vv = v[ii];
F ww = u + kk;
F p = max(pp, ww);
F e1 = exp(pp - p);
F e2 = exp(ww - p);
y[ii] = (e1 * aa + e2 * vv) / (e1 * bb + e2);
ww = w + pp;
p = max(ww, kk);
e1 = exp(ww - p);
e2 = exp(kk - p);
aa = e1 * aa + e2 * vv;
bb = e1 * bb + e2;
pp = p;
}
s[0] = aa;
s[1] = bb;
s[2] = pp;
}
template <typename F>
__global__ void kernel_backward(
const int B, const int T, const int C, const F *__restrict__ const _w, const F *__restrict__ const _u,
const F *__restrict__ const _k, const F *__restrict__ const _v, const F *__restrict__ const _y,
const F *__restrict__ const _gy, F *__restrict__ const _gw, F *__restrict__ const _gu, F *__restrict__ const _gk,
F *__restrict__ const _gv
) {
const int idx = blockIdx.x * blockDim.x + threadIdx.x;
const int _b = idx / C;
const int _c = idx % C;
const int _offset = _b * T * C + _c;
F u = _u[_c];
F w = _w[_c];
const F *__restrict__ const k = _k + _offset;
const F *__restrict__ const v = _v + _offset;
const F *__restrict__ const y = _y + _offset;
const F *__restrict__ const gy = _gy + _offset;
F *__restrict__ const gk = _gk + _offset;
F *__restrict__ const gv = _gv + _offset;
F q[Tmax], r[Tmax];
F gw = 0, gu = 0, aa = 0, bb = 0, ga = 0, gb = 0, pp = MIN_VALUE;
for (int i = 0; i < T; i++) {
const int ii = i * C;
const F kk = k[ii];
const F vv = v[ii];
const F yy = y[ii];
F ww = u + kk;
F p = max(pp, ww);
F e1 = exp(pp - p);
F e2 = exp(ww - p);
const F qq = gy[ii] / (e1 * bb + e2);
gw += (ga - gb * yy) * e1 * qq;
gu += (vv - yy) * e2 * qq;
q[i] = qq;
r[i] = ww - p;
ww = w + pp;
p = max(ww, kk);
e1 = exp(ww - p);
e2 = exp(kk - p);
ga = e1 * (aa + ga);
gb = e1 * (bb + gb);
aa = e1 * aa + e2 * vv;
bb = e1 * bb + e2;
pp = p;
}
const int _offsetBC = _b * C + _c;
_gw[_offsetBC] = gw * _w[_c]; // multiply by w because of w -> -exp(w) in python forward()
_gu[_offsetBC] = gu;
aa = 0, bb = 0, pp = MIN_VALUE;
for (int i = T - 1; i >= 0; i--) {
const int ii = i * C;
const F kk = k[ii];
const F vv = v[ii];
const F yy = y[ii];
const F qq = q[i];
const F rr = r[i];
F e1 = qq * exp(rr);
F e2 = exp(kk + pp);
gk[ii] = e1 * (vv - yy) + e2 * (aa * vv + bb);
gv[ii] = e1 + e2 * aa;
const F ww = w + pp;
const F www = rr - u - kk;
const F p = max(ww, www);
e1 = exp(ww - p);
e2 = qq * exp(www - p);
aa = e1 * aa + e2;
bb = e1 * bb - e2 * yy;
pp = p;
}
}
void cuda_forward(int B, int T, int C, float *w, float *u, float *k, float *v, float *y) {
dim3 threadsPerBlock( min(C, 32) ); // requires --maxrregcount 60 for optimal performance
assert(B * C % threadsPerBlock.x == 0);
dim3 numBlocks(B * C / threadsPerBlock.x);
kernel_forward<<<numBlocks, threadsPerBlock>>>(B, T, C, w, u, k, v, y);
}
void cuda_forward_with_state(int B, int T, int C, float *w, float *u, float *k, float *v, float *y, float *s) {
dim3 threadsPerBlock( min(C, 32) ); // requires --maxrregcount 60 for optimal performance
assert(B * C % threadsPerBlock.x == 0);
dim3 numBlocks(B * C / threadsPerBlock.x);
kernel_forward_with_state<<<numBlocks, threadsPerBlock>>>(B, T, C, w, u, k, v, y, s);
}
void cuda_backward(int B, int T, int C, float *w, float *u, float *k, float *v, float *y, float *gy, float *gw, float *gu, float *gk, float *gv) {
dim3 threadsPerBlock( min(C, 32) ); // requires --maxrregcount 60 for optimal performance
assert(B * C % threadsPerBlock.x == 0);
dim3 numBlocks(B * C / threadsPerBlock.x);
kernel_backward<<<numBlocks, threadsPerBlock>>>(B, T, C, w, u, k, v, y, gy, gw, gu, gk, gv);
}
| transformers/src/transformers/kernels/rwkv/wkv_cuda.cu/0 | {
"file_path": "transformers/src/transformers/kernels/rwkv/wkv_cuda.cu",
"repo_id": "transformers",
"token_count": 3131
} | 308 |
# Copyright 2020 The HuggingFace Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import warnings
from dataclasses import dataclass
from typing import Optional, Tuple
import torch
from .utils import ModelOutput
@dataclass
class BaseModelOutput(ModelOutput):
"""
Base class for model's outputs, with potential hidden states and attentions.
Args:
last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`):
Sequence of hidden-states at the output of the last layer of the model.
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
"""
last_hidden_state: torch.FloatTensor = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class BaseModelOutputWithNoAttention(ModelOutput):
"""
Base class for model's outputs, with potential hidden states.
Args:
last_hidden_state (`torch.FloatTensor` of shape `(batch_size, num_channels, height, width)`):
Sequence of hidden-states at the output of the last layer of the model.
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, num_channels, height, width)`.
Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.
"""
last_hidden_state: torch.FloatTensor = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class BaseModelOutputWithPooling(ModelOutput):
"""
Base class for model's outputs that also contains a pooling of the last hidden states.
Args:
last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`):
Sequence of hidden-states at the output of the last layer of the model.
pooler_output (`torch.FloatTensor` of shape `(batch_size, hidden_size)`):
Last layer hidden-state of the first token of the sequence (classification token) after further processing
through the layers used for the auxiliary pretraining task. E.g. for BERT-family of models, this returns
the classification token after processing through a linear layer and a tanh activation function. The linear
layer weights are trained from the next sentence prediction (classification) objective during pretraining.
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
"""
last_hidden_state: torch.FloatTensor = None
pooler_output: torch.FloatTensor = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class BaseModelOutputWithPoolingAndNoAttention(ModelOutput):
"""
Base class for model's outputs that also contains a pooling of the last hidden states.
Args:
last_hidden_state (`torch.FloatTensor` of shape `(batch_size, num_channels, height, width)`):
Sequence of hidden-states at the output of the last layer of the model.
pooler_output (`torch.FloatTensor` of shape `(batch_size, hidden_size)`):
Last layer hidden-state after a pooling operation on the spatial dimensions.
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, num_channels, height, width)`.
Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.
"""
last_hidden_state: torch.FloatTensor = None
pooler_output: torch.FloatTensor = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class BaseModelOutputWithPast(ModelOutput):
"""
Base class for model's outputs that may also contain a past key/values (to speed up sequential decoding).
Args:
last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`):
Sequence of hidden-states at the output of the last layer of the model.
If `past_key_values` is used only the last hidden-state of the sequences of shape `(batch_size, 1,
hidden_size)` is output.
past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`):
Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape
`(batch_size, num_heads, sequence_length, embed_size_per_head)`) and optionally if
`config.is_encoder_decoder=True` 2 additional tensors of shape `(batch_size, num_heads,
encoder_sequence_length, embed_size_per_head)`.
Contains pre-computed hidden-states (key and values in the self-attention blocks and optionally if
`config.is_encoder_decoder=True` in the cross-attention blocks) that can be used (see `past_key_values`
input) to speed up sequential decoding.
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
"""
last_hidden_state: torch.FloatTensor = None
past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class BaseModelOutputWithCrossAttentions(ModelOutput):
"""
Base class for model's outputs, with potential hidden states and attentions.
Args:
last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`):
Sequence of hidden-states at the output of the last layer of the model.
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
cross_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` and `config.add_cross_attention=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the decoder's cross-attention layer, after the attention softmax, used to compute the
weighted average in the cross-attention heads.
"""
last_hidden_state: torch.FloatTensor = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
cross_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class BaseModelOutputWithPoolingAndCrossAttentions(ModelOutput):
"""
Base class for model's outputs that also contains a pooling of the last hidden states.
Args:
last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`):
Sequence of hidden-states at the output of the last layer of the model.
pooler_output (`torch.FloatTensor` of shape `(batch_size, hidden_size)`):
Last layer hidden-state of the first token of the sequence (classification token) after further processing
through the layers used for the auxiliary pretraining task. E.g. for BERT-family of models, this returns
the classification token after processing through a linear layer and a tanh activation function. The linear
layer weights are trained from the next sentence prediction (classification) objective during pretraining.
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
cross_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` and `config.add_cross_attention=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the decoder's cross-attention layer, after the attention softmax, used to compute the
weighted average in the cross-attention heads.
past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`):
Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape
`(batch_size, num_heads, sequence_length, embed_size_per_head)`) and optionally if
`config.is_encoder_decoder=True` 2 additional tensors of shape `(batch_size, num_heads,
encoder_sequence_length, embed_size_per_head)`.
Contains pre-computed hidden-states (key and values in the self-attention blocks and optionally if
`config.is_encoder_decoder=True` in the cross-attention blocks) that can be used (see `past_key_values`
input) to speed up sequential decoding.
"""
last_hidden_state: torch.FloatTensor = None
pooler_output: torch.FloatTensor = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
cross_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class BaseModelOutputWithPastAndCrossAttentions(ModelOutput):
"""
Base class for model's outputs that may also contain a past key/values (to speed up sequential decoding).
Args:
last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`):
Sequence of hidden-states at the output of the last layer of the model.
If `past_key_values` is used only the last hidden-state of the sequences of shape `(batch_size, 1,
hidden_size)` is output.
past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`):
Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape
`(batch_size, num_heads, sequence_length, embed_size_per_head)`) and optionally if
`config.is_encoder_decoder=True` 2 additional tensors of shape `(batch_size, num_heads,
encoder_sequence_length, embed_size_per_head)`.
Contains pre-computed hidden-states (key and values in the self-attention blocks and optionally if
`config.is_encoder_decoder=True` in the cross-attention blocks) that can be used (see `past_key_values`
input) to speed up sequential decoding.
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
cross_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` and `config.add_cross_attention=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the decoder's cross-attention layer, after the attention softmax, used to compute the
weighted average in the cross-attention heads.
"""
last_hidden_state: torch.FloatTensor = None
past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
cross_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class MoECausalLMOutputWithPast(ModelOutput):
"""
Base class for causal language model (or autoregressive) outputs as well as Mixture of Expert's router hidden
states terms, to train a MoE model.
Args:
loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided):
Language modeling loss (for next-token prediction).
logits (`torch.FloatTensor` of shape `(batch_size, sequence_length, config.vocab_size)`):
Prediction scores of the language modeling head (scores for each vocabulary token before SoftMax).
past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`):
Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape
`(batch_size, num_heads, sequence_length, embed_size_per_head)`)
Contains pre-computed hidden-states (key and values in the self-attention blocks) that can be used (see
`past_key_values` input) to speed up sequential decoding.
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
z_loss (`torch.FloatTensor`, *optional*, returned when `labels` is provided):
z_loss for the sparse modules.
aux_loss (`torch.FloatTensor`, *optional*, returned when `labels` is provided):
aux_loss for the sparse modules.
router_logits (`tuple(torch.FloatTensor)`, *optional*, returned when `output_router_logits=True` is passed or when `config.add_router_probs=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, sequence_length, num_experts)`.
Router logits of the encoder model, useful to compute the auxiliary loss and the z_loss for the sparse
modules.
"""
loss: Optional[torch.FloatTensor] = None
logits: torch.FloatTensor = None
past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
z_loss: torch.FloatTensor = None
aux_loss: torch.FloatTensor = None
router_logits: Optional[Tuple[torch.FloatTensor]] = None
@dataclass
class MoEModelOutput(ModelOutput):
"""
Base class for model's outputs, with potential hidden states and attentions.
Args:
last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`):
Sequence of hidden-states at the output of the last layer of the model.
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
router_probs (`tuple(torch.FloatTensor)`, *optional*, returned when `output_router_probs=True` and `config.add_router_probs=True` is passed or when `config.output_router_probs=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, sequence_length, num_experts)`.
Raw router probabilities that are computed by MoE routers, these terms are used to compute the auxiliary
loss and the z_loss for Mixture of Experts models.
"""
last_hidden_state: torch.FloatTensor = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
router_probs: Optional[Tuple[torch.FloatTensor]] = None
@dataclass
class MoeModelOutputWithPast(ModelOutput):
"""
Base class for model's outputs, with potential hidden states and attentions.
Args:
last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`):
Sequence of hidden-states at the output of the last layer of the model.
past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`):
Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape
`(batch_size, num_heads, sequence_length, embed_size_per_head)`) and optionally if
`config.is_encoder_decoder=True` 2 additional tensors of shape `(batch_size, num_heads,
encoder_sequence_length, embed_size_per_head)`.
Contains pre-computed hidden-states (key and values in the self-attention blocks and optionally if
`config.is_encoder_decoder=True` in the cross-attention blocks) that can be used (see `past_key_values`
input) to speed up sequential decoding.
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
router_logits (`tuple(torch.FloatTensor)`, *optional*, returned when `output_router_probs=True` and `config.add_router_probs=True` is passed or when `config.output_router_probs=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, sequence_length, num_experts)`.
Raw router logtis (post-softmax) that are computed by MoE routers, these terms are used to compute the auxiliary
loss for Mixture of Experts models.
"""
last_hidden_state: torch.FloatTensor = None
past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
router_logits: Optional[Tuple[torch.FloatTensor]] = None
@dataclass
class MoeCausalLMOutputWithPast(ModelOutput):
"""
Base class for causal language model (or autoregressive) with mixture of experts outputs.
Args:
loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided):
Language modeling loss (for next-token prediction).
logits (`torch.FloatTensor` of shape `(batch_size, sequence_length, config.vocab_size)`):
Prediction scores of the language modeling head (scores for each vocabulary token before SoftMax).
aux_loss (`torch.FloatTensor`, *optional*, returned when `labels` is provided):
aux_loss for the sparse modules.
router_logits (`tuple(torch.FloatTensor)`, *optional*, returned when `output_router_probs=True` and `config.add_router_probs=True` is passed or when `config.output_router_probs=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, sequence_length, num_experts)`.
Raw router logtis (post-softmax) that are computed by MoE routers, these terms are used to compute the auxiliary
loss for Mixture of Experts models.
past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`):
Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape
`(batch_size, num_heads, sequence_length, embed_size_per_head)`)
Contains pre-computed hidden-states (key and values in the self-attention blocks) that can be used (see
`past_key_values` input) to speed up sequential decoding.
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
"""
loss: Optional[torch.FloatTensor] = None
aux_loss: Optional[torch.FloatTensor] = None
logits: torch.FloatTensor = None
past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
router_logits: Optional[Tuple[torch.FloatTensor]] = None
@dataclass
class MoEModelOutputWithPastAndCrossAttentions(ModelOutput):
"""
Base class for model's outputs that may also contain a past key/values (to speed up sequential decoding) as well as
Mixture of Expert's router hidden states terms, to train a MoE model.
Args:
last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`):
Sequence of hidden-states at the output of the last layer of the model.
If `past_key_values` is used only the last hidden-state of the sequences of shape `(batch_size, 1,
hidden_size)` is output.
past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`):
Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape
`(batch_size, num_heads, sequence_length, embed_size_per_head)`) and optionally if
`config.is_encoder_decoder=True` 2 additional tensors of shape `(batch_size, num_heads,
encoder_sequence_length, embed_size_per_head)`.
Contains pre-computed hidden-states (key and values in the self-attention blocks and optionally if
`config.is_encoder_decoder=True` in the cross-attention blocks) that can be used (see `past_key_values`
input) to speed up sequential decoding.
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
cross_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` and `config.add_cross_attention=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the decoder's cross-attention layer, after the attention softmax, used to compute the
weighted average in the cross-attention heads.
router_probs (`tuple(torch.FloatTensor)`, *optional*, returned when `output_router_probs=True` and `config.add_router_probs=True` is passed or when `config.output_router_probs=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, sequence_length, num_experts)`.
Raw router probabilities that are computed by MoE routers, these terms are used to compute the auxiliary
loss and the z_loss for Mixture of Experts models.
"""
last_hidden_state: torch.FloatTensor = None
past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
cross_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
router_probs: Optional[Tuple[torch.FloatTensor]] = None
@dataclass
class Seq2SeqModelOutput(ModelOutput):
"""
Base class for model encoder's outputs that also contains : pre-computed hidden states that can speed up sequential
decoding.
Args:
last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`):
Sequence of hidden-states at the output of the last layer of the decoder of the model.
If `past_key_values` is used only the last hidden-state of the sequences of shape `(batch_size, 1,
hidden_size)` is output.
past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`):
Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape
`(batch_size, num_heads, sequence_length, embed_size_per_head)`) and 2 additional tensors of shape
`(batch_size, num_heads, encoder_sequence_length, embed_size_per_head)`.
Contains pre-computed hidden-states (key and values in the self-attention blocks and in the cross-attention
blocks) that can be used (see `past_key_values` input) to speed up sequential decoding.
decoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the decoder at the output of each layer plus the optional initial embedding outputs.
decoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the decoder, after the attention softmax, used to compute the weighted average in the
self-attention heads.
cross_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the decoder's cross-attention layer, after the attention softmax, used to compute the
weighted average in the cross-attention heads.
encoder_last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*):
Sequence of hidden-states at the output of the last layer of the encoder of the model.
encoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the encoder at the output of each layer plus the optional initial embedding outputs.
encoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the encoder, after the attention softmax, used to compute the weighted average in the
self-attention heads.
"""
last_hidden_state: torch.FloatTensor = None
past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None
decoder_hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
decoder_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
cross_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
encoder_last_hidden_state: Optional[torch.FloatTensor] = None
encoder_hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
encoder_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class Seq2SeqMoEModelOutput(ModelOutput):
"""
Base class for model encoder's outputs that also contains : pre-computed hidden states that can speed up sequential
decoding.
Args:
last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`):
Sequence of hidden-states at the output of the last layer of the decoder of the model.
If `past_key_values` is used only the last hidden-state of the sequences of shape `(batch_size, 1,
hidden_size)` is output.
past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`):
Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape
`(batch_size, num_heads, sequence_length, embed_size_per_head)`) and 2 additional tensors of shape
`(batch_size, num_heads, encoder_sequence_length, embed_size_per_head)`.
Contains pre-computed hidden-states (key and values in the self-attention blocks and in the cross-attention
blocks) that can be used (see `past_key_values` input) to speed up sequential decoding.
decoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the decoder at the output of each layer plus the optional initial embedding outputs.
decoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the decoder, after the attention softmax, used to compute the weighted average in the
self-attention heads.
decoder_router_logits (`tuple(torch.FloatTensor)`, *optional*, returned when `output_router_logits=True` is passed or when `config.add_router_probs=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, sequence_length, num_experts)`.
Router logits of the decoder model, useful to compute the auxiliary loss for Mixture of Experts models.
cross_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the decoder's cross-attention layer, after the attention softmax, used to compute the
weighted average in the cross-attention heads.
encoder_last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*):
Sequence of hidden-states at the output of the last layer of the encoder of the model.
encoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the encoder at the output of each layer plus the optional initial embedding outputs.
encoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the encoder, after the attention softmax, used to compute the weighted average in the
self-attention heads.
encoder_router_logits (`tuple(torch.FloatTensor)`, *optional*, returned when `output_router_logits=True` is passed or when `config.add_router_probs=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, sequence_length, num_experts)`.
Router logits of the encoder model, useful to compute the auxiliary loss and the z_loss for the sparse
modules.
"""
last_hidden_state: torch.FloatTensor = None
past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None
decoder_hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
decoder_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
decoder_router_logits: Optional[Tuple[torch.FloatTensor]] = None
cross_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
encoder_last_hidden_state: Optional[torch.FloatTensor] = None
encoder_hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
encoder_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
encoder_router_logits: Optional[Tuple[torch.FloatTensor]] = None
@dataclass
class CausalLMOutput(ModelOutput):
"""
Base class for causal language model (or autoregressive) outputs.
Args:
loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided):
Language modeling loss (for next-token prediction).
logits (`torch.FloatTensor` of shape `(batch_size, sequence_length, config.vocab_size)`):
Prediction scores of the language modeling head (scores for each vocabulary token before SoftMax).
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
"""
loss: Optional[torch.FloatTensor] = None
logits: torch.FloatTensor = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class CausalLMOutputWithPast(ModelOutput):
"""
Base class for causal language model (or autoregressive) outputs.
Args:
loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided):
Language modeling loss (for next-token prediction).
logits (`torch.FloatTensor` of shape `(batch_size, sequence_length, config.vocab_size)`):
Prediction scores of the language modeling head (scores for each vocabulary token before SoftMax).
past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`):
Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape
`(batch_size, num_heads, sequence_length, embed_size_per_head)`)
Contains pre-computed hidden-states (key and values in the self-attention blocks) that can be used (see
`past_key_values` input) to speed up sequential decoding.
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
"""
loss: Optional[torch.FloatTensor] = None
logits: torch.FloatTensor = None
past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class CausalLMOutputWithCrossAttentions(ModelOutput):
"""
Base class for causal language model (or autoregressive) outputs.
Args:
loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided):
Language modeling loss (for next-token prediction).
logits (`torch.FloatTensor` of shape `(batch_size, sequence_length, config.vocab_size)`):
Prediction scores of the language modeling head (scores for each vocabulary token before SoftMax).
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
cross_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Cross attentions weights after the attention softmax, used to compute the weighted average in the
cross-attention heads.
past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`):
Tuple of `torch.FloatTensor` tuples of length `config.n_layers`, with each tuple containing the cached key,
value states of the self-attention and the cross-attention layers if model is used in encoder-decoder
setting. Only relevant if `config.is_decoder = True`.
Contains pre-computed hidden-states (key and values in the attention blocks) that can be used (see
`past_key_values` input) to speed up sequential decoding.
"""
loss: Optional[torch.FloatTensor] = None
logits: torch.FloatTensor = None
past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
cross_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class SequenceClassifierOutputWithPast(ModelOutput):
"""
Base class for outputs of sentence classification models.
Args:
loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided):
Classification (or regression if config.num_labels==1) loss.
logits (`torch.FloatTensor` of shape `(batch_size, config.num_labels)`):
Classification (or regression if config.num_labels==1) scores (before SoftMax).
past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`):
Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape
`(batch_size, num_heads, sequence_length, embed_size_per_head)`)
Contains pre-computed hidden-states (key and values in the self-attention blocks) that can be used (see
`past_key_values` input) to speed up sequential decoding.
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
"""
loss: Optional[torch.FloatTensor] = None
logits: torch.FloatTensor = None
past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class MaskedLMOutput(ModelOutput):
"""
Base class for masked language models outputs.
Args:
loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided):
Masked language modeling (MLM) loss.
logits (`torch.FloatTensor` of shape `(batch_size, sequence_length, config.vocab_size)`):
Prediction scores of the language modeling head (scores for each vocabulary token before SoftMax).
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
"""
loss: Optional[torch.FloatTensor] = None
logits: torch.FloatTensor = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class Seq2SeqLMOutput(ModelOutput):
"""
Base class for sequence-to-sequence language models outputs.
Args:
loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided):
Language modeling loss.
logits (`torch.FloatTensor` of shape `(batch_size, sequence_length, config.vocab_size)`):
Prediction scores of the language modeling head (scores for each vocabulary token before SoftMax).
past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`):
Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape
`(batch_size, num_heads, sequence_length, embed_size_per_head)`) and 2 additional tensors of shape
`(batch_size, num_heads, encoder_sequence_length, embed_size_per_head)`.
Contains pre-computed hidden-states (key and values in the self-attention blocks and in the cross-attention
blocks) that can be used (see `past_key_values` input) to speed up sequential decoding.
decoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the decoder at the output of each layer plus the initial embedding outputs.
decoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the decoder, after the attention softmax, used to compute the weighted average in the
self-attention heads.
cross_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the decoder's cross-attention layer, after the attention softmax, used to compute the
weighted average in the cross-attention heads.
encoder_last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*):
Sequence of hidden-states at the output of the last layer of the encoder of the model.
encoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the encoder at the output of each layer plus the initial embedding outputs.
encoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the encoder, after the attention softmax, used to compute the weighted average in the
self-attention heads.
"""
loss: Optional[torch.FloatTensor] = None
logits: torch.FloatTensor = None
past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None
decoder_hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
decoder_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
cross_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
encoder_last_hidden_state: Optional[torch.FloatTensor] = None
encoder_hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
encoder_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class Seq2SeqMoEOutput(ModelOutput):
"""
Base class for sequence-to-sequence language models outputs.
Args:
loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided):
Language modeling loss.
logits (`torch.FloatTensor` of shape `(batch_size, sequence_length, config.vocab_size)`):
Prediction scores of the language modeling head (scores for each vocabulary token before SoftMax).
past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`):
Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape
`(batch_size, num_heads, sequence_length, embed_size_per_head)`) and 2 additional tensors of shape
`(batch_size, num_heads, encoder_sequence_length, embed_size_per_head)`.
Contains pre-computed hidden-states (key and values in the self-attention blocks and in the cross-attention
blocks) that can be used (see `past_key_values` input) to speed up sequential decoding.
decoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the decoder at the output of each layer plus the initial embedding outputs.
decoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the decoder, after the attention softmax, used to compute the weighted average in the
self-attention heads.
decoder_router_logits (`tuple(torch.FloatTensor)`, *optional*, returned when `output_router_logits=True` is passed or when `config.add_router_probs=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, sequence_length, num_experts)`.
Router logits of the decoder model, useful to compute the auxiliary loss for Mixture of Experts models.
cross_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the decoder's cross-attention layer, after the attention softmax, used to compute the
weighted average in the cross-attention heads.
encoder_last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*):
Sequence of hidden-states at the output of the last layer of the encoder of the model.
encoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the encoder at the output of each layer plus the initial embedding outputs.
encoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the encoder, after the attention softmax, used to compute the weighted average in the
self-attention heads.
encoder_router_logits (`tuple(torch.FloatTensor)`, *optional*, returned when `output_router_logits=True` is passed or when `config.add_router_probs=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, sequence_length, num_experts)`.
Router logits of the encoder model, useful to compute the auxiliary loss and z_loss for Mixture of Experts
models.
"""
loss: Optional[torch.FloatTensor] = None
logits: torch.FloatTensor = None
encoder_z_loss: torch.FloatTensor = None
decoder_z_loss: torch.FloatTensor = None
encoder_aux_loss: torch.FloatTensor = None
decoder_aux_loss: torch.FloatTensor = None
past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None
decoder_hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
decoder_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
decoder_router_logits: Optional[Tuple[torch.FloatTensor]] = None
cross_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
encoder_last_hidden_state: Optional[torch.FloatTensor] = None
encoder_hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
encoder_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
encoder_router_logits: Optional[Tuple[torch.FloatTensor]] = None
@dataclass
class NextSentencePredictorOutput(ModelOutput):
"""
Base class for outputs of models predicting if two sentences are consecutive or not.
Args:
loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `next_sentence_label` is provided):
Next sequence prediction (classification) loss.
logits (`torch.FloatTensor` of shape `(batch_size, 2)`):
Prediction scores of the next sequence prediction (classification) head (scores of True/False continuation
before SoftMax).
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
"""
loss: Optional[torch.FloatTensor] = None
logits: torch.FloatTensor = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class SequenceClassifierOutput(ModelOutput):
"""
Base class for outputs of sentence classification models.
Args:
loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided):
Classification (or regression if config.num_labels==1) loss.
logits (`torch.FloatTensor` of shape `(batch_size, config.num_labels)`):
Classification (or regression if config.num_labels==1) scores (before SoftMax).
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
"""
loss: Optional[torch.FloatTensor] = None
logits: torch.FloatTensor = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class Seq2SeqSequenceClassifierOutput(ModelOutput):
"""
Base class for outputs of sequence-to-sequence sentence classification models.
Args:
loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `label` is provided):
Classification (or regression if config.num_labels==1) loss.
logits (`torch.FloatTensor` of shape `(batch_size, config.num_labels)`):
Classification (or regression if config.num_labels==1) scores (before SoftMax).
past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`):
Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape
`(batch_size, num_heads, sequence_length, embed_size_per_head)`) and 2 additional tensors of shape
`(batch_size, num_heads, encoder_sequence_length, embed_size_per_head)`.
Contains pre-computed hidden-states (key and values in the self-attention blocks and in the cross-attention
blocks) that can be used (see `past_key_values` input) to speed up sequential decoding.
decoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the decoder at the output of each layer plus the initial embedding outputs.
decoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the decoder, after the attention softmax, used to compute the weighted average in the
self-attention heads.
cross_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the decoder's cross-attention layer, after the attention softmax, used to compute the
weighted average in the cross-attention heads.
encoder_last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*):
Sequence of hidden-states at the output of the last layer of the encoder of the model.
encoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the encoder at the output of each layer plus the initial embedding outputs.
encoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the encoder, after the attention softmax, used to compute the weighted average in the
self-attention heads.
"""
loss: Optional[torch.FloatTensor] = None
logits: torch.FloatTensor = None
past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None
decoder_hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
decoder_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
cross_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
encoder_last_hidden_state: Optional[torch.FloatTensor] = None
encoder_hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
encoder_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class MultipleChoiceModelOutput(ModelOutput):
"""
Base class for outputs of multiple choice models.
Args:
loss (`torch.FloatTensor` of shape *(1,)*, *optional*, returned when `labels` is provided):
Classification loss.
logits (`torch.FloatTensor` of shape `(batch_size, num_choices)`):
*num_choices* is the second dimension of the input tensors. (see *input_ids* above).
Classification scores (before SoftMax).
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
"""
loss: Optional[torch.FloatTensor] = None
logits: torch.FloatTensor = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class TokenClassifierOutput(ModelOutput):
"""
Base class for outputs of token classification models.
Args:
loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided) :
Classification loss.
logits (`torch.FloatTensor` of shape `(batch_size, sequence_length, config.num_labels)`):
Classification scores (before SoftMax).
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
"""
loss: Optional[torch.FloatTensor] = None
logits: torch.FloatTensor = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class QuestionAnsweringModelOutput(ModelOutput):
"""
Base class for outputs of question answering models.
Args:
loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided):
Total span extraction loss is the sum of a Cross-Entropy for the start and end positions.
start_logits (`torch.FloatTensor` of shape `(batch_size, sequence_length)`):
Span-start scores (before SoftMax).
end_logits (`torch.FloatTensor` of shape `(batch_size, sequence_length)`):
Span-end scores (before SoftMax).
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
"""
loss: Optional[torch.FloatTensor] = None
start_logits: torch.FloatTensor = None
end_logits: torch.FloatTensor = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class Seq2SeqQuestionAnsweringModelOutput(ModelOutput):
"""
Base class for outputs of sequence-to-sequence question answering models.
Args:
loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided):
Total span extraction loss is the sum of a Cross-Entropy for the start and end positions.
start_logits (`torch.FloatTensor` of shape `(batch_size, sequence_length)`):
Span-start scores (before SoftMax).
end_logits (`torch.FloatTensor` of shape `(batch_size, sequence_length)`):
Span-end scores (before SoftMax).
past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`):
Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape
`(batch_size, num_heads, sequence_length, embed_size_per_head)`) and 2 additional tensors of shape
`(batch_size, num_heads, encoder_sequence_length, embed_size_per_head)`.
Contains pre-computed hidden-states (key and values in the self-attention blocks and in the cross-attention
blocks) that can be used (see `past_key_values` input) to speed up sequential decoding.
decoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the decoder at the output of each layer plus the initial embedding outputs.
decoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the decoder, after the attention softmax, used to compute the weighted average in the
self-attention heads.
cross_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the decoder's cross-attention layer, after the attention softmax, used to compute the
weighted average in the cross-attention heads.
encoder_last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*):
Sequence of hidden-states at the output of the last layer of the encoder of the model.
encoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the encoder at the output of each layer plus the initial embedding outputs.
encoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the encoder, after the attention softmax, used to compute the weighted average in the
self-attention heads.
"""
loss: Optional[torch.FloatTensor] = None
start_logits: torch.FloatTensor = None
end_logits: torch.FloatTensor = None
past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None
decoder_hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
decoder_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
cross_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
encoder_last_hidden_state: Optional[torch.FloatTensor] = None
encoder_hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
encoder_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class SemanticSegmenterOutput(ModelOutput):
"""
Base class for outputs of semantic segmentation models.
Args:
loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided):
Classification (or regression if config.num_labels==1) loss.
logits (`torch.FloatTensor` of shape `(batch_size, config.num_labels, logits_height, logits_width)`):
Classification scores for each pixel.
<Tip warning={true}>
The logits returned do not necessarily have the same size as the `pixel_values` passed as inputs. This is
to avoid doing two interpolations and lose some quality when a user needs to resize the logits to the
original image size as post-processing. You should always check your logits shape and resize as needed.
</Tip>
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, patch_size, hidden_size)`.
Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, patch_size,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
"""
loss: Optional[torch.FloatTensor] = None
logits: torch.FloatTensor = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class ImageClassifierOutput(ModelOutput):
"""
Base class for outputs of image classification models.
Args:
loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided):
Classification (or regression if config.num_labels==1) loss.
logits (`torch.FloatTensor` of shape `(batch_size, config.num_labels)`):
Classification (or regression if config.num_labels==1) scores (before SoftMax).
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each stage) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states
(also called feature maps) of the model at the output of each stage.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, patch_size,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
"""
loss: Optional[torch.FloatTensor] = None
logits: torch.FloatTensor = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class ImageClassifierOutputWithNoAttention(ModelOutput):
"""
Base class for outputs of image classification models.
Args:
loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided):
Classification (or regression if config.num_labels==1) loss.
logits (`torch.FloatTensor` of shape `(batch_size, config.num_labels)`):
Classification (or regression if config.num_labels==1) scores (before SoftMax).
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each stage) of shape `(batch_size, num_channels, height, width)`. Hidden-states (also
called feature maps) of the model at the output of each stage.
"""
loss: Optional[torch.FloatTensor] = None
logits: torch.FloatTensor = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class DepthEstimatorOutput(ModelOutput):
"""
Base class for outputs of depth estimation models.
Args:
loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided):
Classification (or regression if config.num_labels==1) loss.
predicted_depth (`torch.FloatTensor` of shape `(batch_size, height, width)`):
Predicted depth for each pixel.
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, num_channels, height, width)`.
Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, patch_size,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
"""
loss: Optional[torch.FloatTensor] = None
predicted_depth: torch.FloatTensor = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class ImageSuperResolutionOutput(ModelOutput):
"""
Base class for outputs of image super resolution models.
Args:
loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided):
Reconstruction loss.
reconstruction (`torch.FloatTensor` of shape `(batch_size, num_channels, height, width)`):
Reconstructed images, possibly upscaled.
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each stage) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states
(also called feature maps) of the model at the output of each stage.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, patch_size,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
"""
loss: Optional[torch.FloatTensor] = None
reconstruction: torch.FloatTensor = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class Wav2Vec2BaseModelOutput(ModelOutput):
"""
Base class for models that have been trained with the Wav2Vec2 loss objective.
Args:
last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`):
Sequence of hidden-states at the output of the last layer of the model.
extract_features (`torch.FloatTensor` of shape `(batch_size, sequence_length, conv_dim[-1])`):
Sequence of extracted feature vectors of the last convolutional layer of the model.
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of
shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the model at the output of each layer plus the initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
"""
last_hidden_state: torch.FloatTensor = None
extract_features: torch.FloatTensor = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class XVectorOutput(ModelOutput):
"""
Output type of [`Wav2Vec2ForXVector`].
Args:
loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided):
Classification loss.
logits (`torch.FloatTensor` of shape `(batch_size, config.xvector_output_dim)`):
Classification hidden states before AMSoftmax.
embeddings (`torch.FloatTensor` of shape `(batch_size, config.xvector_output_dim)`):
Utterance embeddings used for vector similarity-based retrieval.
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of
shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the model at the output of each layer plus the initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
"""
loss: Optional[torch.FloatTensor] = None
logits: torch.FloatTensor = None
embeddings: torch.FloatTensor = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class BackboneOutput(ModelOutput):
"""
Base class for outputs of backbones.
Args:
feature_maps (`tuple(torch.FloatTensor)` of shape `(batch_size, num_channels, height, width)`):
Feature maps of the stages.
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of
shape `(batch_size, sequence_length, hidden_size)` or `(batch_size, num_channels, height, width)`,
depending on the backbone.
Hidden-states of the model at the output of each stage plus the initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`. Only applicable if the backbone uses attention.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
"""
feature_maps: Tuple[torch.FloatTensor] = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class BaseModelOutputWithPoolingAndProjection(ModelOutput):
"""
Base class for model's outputs that also contains a pooling of the last hidden states.
Args:
last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`):
Sequence of hidden-states at the output of the last layer of the model.
pooler_output (`torch.FloatTensor` of shape `(batch_size, hidden_size)`):
Last layer hidden-state of the first token of the sequence (classification token) after further processing
through the layers used for the auxiliary pretraining task. E.g. for BERT-family of models, this returns
the classification token after processing through a linear layer and a tanh activation function. The linear
layer weights are trained from the next sentence prediction (classification) objective during pretraining.
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the model at the output of each layer plus the optional initial embedding outputs.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights after the attention softmax, used to compute the weighted average in the self-attention
heads.
projection_state (`tuple(torch.FloatTensor)`, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` of shape `(batch_size,config.project_dim)`.
Text embeddings before the projection layer, used to mimic the last hidden state of the teacher encoder.
"""
last_hidden_state: torch.FloatTensor = None
pooler_output: torch.FloatTensor = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
projection_state: Optional[Tuple[torch.FloatTensor]] = None
@dataclass
class Seq2SeqSpectrogramOutput(ModelOutput):
"""
Base class for sequence-to-sequence spectrogram outputs.
Args:
loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `labels` is provided):
Spectrogram generation loss.
spectrogram (`torch.FloatTensor` of shape `(batch_size, sequence_length, num_bins)`):
The predicted spectrogram.
past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`):
Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape
`(batch_size, num_heads, sequence_length, embed_size_per_head)`) and 2 additional tensors of shape
`(batch_size, num_heads, encoder_sequence_length, embed_size_per_head)`.
Contains pre-computed hidden-states (key and values in the self-attention blocks and in the cross-attention
blocks) that can be used (see `past_key_values` input) to speed up sequential decoding.
decoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the decoder at the output of each layer plus the initial embedding outputs.
decoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the decoder, after the attention softmax, used to compute the weighted average in the
self-attention heads.
cross_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the decoder's cross-attention layer, after the attention softmax, used to compute the
weighted average in the cross-attention heads.
encoder_last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*):
Sequence of hidden-states at the output of the last layer of the encoder of the model.
encoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the encoder at the output of each layer plus the initial embedding outputs.
encoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the encoder, after the attention softmax, used to compute the weighted average in the
self-attention heads.
"""
loss: Optional[torch.FloatTensor] = None
spectrogram: torch.FloatTensor = None
past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None
decoder_hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
decoder_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
cross_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
encoder_last_hidden_state: Optional[torch.FloatTensor] = None
encoder_hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
encoder_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@dataclass
class Seq2SeqTSModelOutput(ModelOutput):
"""
Base class for time series model's encoder outputs that also contains pre-computed hidden states that can speed up
sequential decoding.
Args:
last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`):
Sequence of hidden-states at the output of the last layer of the decoder of the model.
If `past_key_values` is used only the last hidden-state of the sequences of shape `(batch_size, 1,
hidden_size)` is output.
past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`):
Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape
`(batch_size, num_heads, sequence_length, embed_size_per_head)`) and 2 additional tensors of shape
`(batch_size, num_heads, encoder_sequence_length, embed_size_per_head)`.
Contains pre-computed hidden-states (key and values in the self-attention blocks and in the cross-attention
blocks) that can be used (see `past_key_values` input) to speed up sequential decoding.
decoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the decoder at the output of each layer plus the optional initial embedding outputs.
decoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the decoder, after the attention softmax, used to compute the weighted average in the
self-attention heads.
cross_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the decoder's cross-attention layer, after the attention softmax, used to compute the
weighted average in the cross-attention heads.
encoder_last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*):
Sequence of hidden-states at the output of the last layer of the encoder of the model.
encoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the encoder at the output of each layer plus the optional initial embedding outputs.
encoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the encoder, after the attention softmax, used to compute the weighted average in the
self-attention heads.
loc (`torch.FloatTensor` of shape `(batch_size,)` or `(batch_size, input_size)`, *optional*):
Shift values of each time series' context window which is used to give the model inputs of the same
magnitude and then used to shift back to the original magnitude.
scale (`torch.FloatTensor` of shape `(batch_size,)` or `(batch_size, input_size)`, *optional*):
Scaling values of each time series' context window which is used to give the model inputs of the same
magnitude and then used to rescale back to the original magnitude.
static_features (`torch.FloatTensor` of shape `(batch_size, feature size)`, *optional*):
Static features of each time series' in a batch which are copied to the covariates at inference time.
"""
last_hidden_state: torch.FloatTensor = None
past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None
decoder_hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
decoder_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
cross_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
encoder_last_hidden_state: Optional[torch.FloatTensor] = None
encoder_hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
encoder_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
loc: Optional[torch.FloatTensor] = None
scale: Optional[torch.FloatTensor] = None
static_features: Optional[torch.FloatTensor] = None
@dataclass
class Seq2SeqTSPredictionOutput(ModelOutput):
"""
Base class for time series model's decoder outputs that also contain the loss as well as the parameters of the
chosen distribution.
Args:
loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when a `future_values` is provided):
Distributional loss.
params (`torch.FloatTensor` of shape `(batch_size, num_samples, num_params)`):
Parameters of the chosen distribution.
past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`):
Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape
`(batch_size, num_heads, sequence_length, embed_size_per_head)`) and 2 additional tensors of shape
`(batch_size, num_heads, encoder_sequence_length, embed_size_per_head)`.
Contains pre-computed hidden-states (key and values in the self-attention blocks and in the cross-attention
blocks) that can be used (see `past_key_values` input) to speed up sequential decoding.
decoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the decoder at the output of each layer plus the initial embedding outputs.
decoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the decoder, after the attention softmax, used to compute the weighted average in the
self-attention heads.
cross_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the decoder's cross-attention layer, after the attention softmax, used to compute the
weighted average in the cross-attention heads.
encoder_last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*):
Sequence of hidden-states at the output of the last layer of the encoder of the model.
encoder_hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each layer) of shape `(batch_size, sequence_length, hidden_size)`.
Hidden-states of the encoder at the output of each layer plus the initial embedding outputs.
encoder_attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when `config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, sequence_length,
sequence_length)`.
Attentions weights of the encoder, after the attention softmax, used to compute the weighted average in the
self-attention heads.
loc (`torch.FloatTensor` of shape `(batch_size,)` or `(batch_size, input_size)`, *optional*):
Shift values of each time series' context window which is used to give the model inputs of the same
magnitude and then used to shift back to the original magnitude.
scale (`torch.FloatTensor` of shape `(batch_size,)` or `(batch_size, input_size)`, *optional*):
Scaling values of each time series' context window which is used to give the model inputs of the same
magnitude and then used to rescale back to the original magnitude.
static_features (`torch.FloatTensor` of shape `(batch_size, feature size)`, *optional*):
Static features of each time series' in a batch which are copied to the covariates at inference time.
"""
loss: Optional[torch.FloatTensor] = None
params: Optional[Tuple[torch.FloatTensor]] = None
past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None
decoder_hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
decoder_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
cross_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
encoder_last_hidden_state: Optional[torch.FloatTensor] = None
encoder_hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
encoder_attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
loc: Optional[torch.FloatTensor] = None
scale: Optional[torch.FloatTensor] = None
static_features: Optional[torch.FloatTensor] = None
@dataclass
class SampleTSPredictionOutput(ModelOutput):
"""
Base class for time series model's predictions outputs that contains the sampled values from the chosen
distribution.
Args:
sequences (`torch.FloatTensor` of shape `(batch_size, num_samples, prediction_length)` or `(batch_size, num_samples, prediction_length, input_size)`):
Sampled values from the chosen distribution.
"""
sequences: torch.FloatTensor = None
@dataclass
class MaskedImageModelingOutput(ModelOutput):
"""
Base class for outputs of masked image completion / in-painting models.
Args:
loss (`torch.FloatTensor` of shape `(1,)`, *optional*, returned when `bool_masked_pos` is provided):
Reconstruction loss.
reconstruction (`torch.FloatTensor` of shape `(batch_size, num_channels, height, width)`):
Reconstructed / completed images.
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or
when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings, if the model has an embedding layer, +
one for the output of each stage) of shape `(batch_size, sequence_length, hidden_size)`. Hidden-states
(also called feature maps) of the model at the output of each stage.
attentions (`tuple(torch.FloatTensor)`, *optional*, returned when `output_attentions=True` is passed or when
`config.output_attentions=True`):
Tuple of `torch.FloatTensor` (one for each layer) of shape `(batch_size, num_heads, patch_size,
sequence_length)`. Attentions weights after the attention softmax, used to compute the weighted average in
the self-attention heads.
"""
loss: Optional[torch.FloatTensor] = None
reconstruction: torch.FloatTensor = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
attentions: Optional[Tuple[torch.FloatTensor, ...]] = None
@property
def logits(self):
warnings.warn(
"logits attribute is deprecated and will be removed in version 5 of Transformers."
" Please use the reconstruction attribute to retrieve the final output instead.",
FutureWarning,
)
return self.reconstruction
| transformers/src/transformers/modeling_outputs.py/0 | {
"file_path": "transformers/src/transformers/modeling_outputs.py",
"repo_id": "transformers",
"token_count": 40604
} | 309 |
# coding=utf-8
# Copyright 2023 The HuggingFace Inc. team.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Convert ALIGN checkpoints from the original repository."""
import argparse
import os
import align
import numpy as np
import requests
import tensorflow as tf
import torch
from PIL import Image
from tokenizer import Tokenizer
from transformers import (
AlignConfig,
AlignModel,
AlignProcessor,
BertConfig,
BertTokenizer,
EfficientNetConfig,
EfficientNetImageProcessor,
)
from transformers.utils import logging
logging.set_verbosity_info()
logger = logging.get_logger(__name__)
def preprocess(image):
image = tf.image.resize(image, (346, 346))
image = tf.image.crop_to_bounding_box(image, (346 - 289) // 2, (346 - 289) // 2, 289, 289)
return image
def get_align_config():
vision_config = EfficientNetConfig.from_pretrained("google/efficientnet-b7")
vision_config.image_size = 289
vision_config.hidden_dim = 640
vision_config.id2label = {"0": "LABEL_0", "1": "LABEL_1"}
vision_config.label2id = {"LABEL_0": 0, "LABEL_1": 1}
vision_config.depthwise_padding = []
text_config = BertConfig()
config = AlignConfig.from_text_vision_configs(
text_config=text_config, vision_config=vision_config, projection_dim=640
)
return config
# We will verify our results on an image of cute cats
def prepare_img():
url = "http://images.cocodataset.org/val2017/000000039769.jpg"
im = Image.open(requests.get(url, stream=True).raw)
return im
def get_processor():
image_processor = EfficientNetImageProcessor(
do_center_crop=True,
rescale_factor=1 / 127.5,
rescale_offset=True,
do_normalize=False,
include_top=False,
resample=Image.BILINEAR,
)
tokenizer = BertTokenizer.from_pretrained("google-bert/bert-base-uncased")
tokenizer.model_max_length = 64
processor = AlignProcessor(image_processor=image_processor, tokenizer=tokenizer)
return processor
# here we list all keys to be renamed (original name on the left, our name on the right)
def rename_keys(original_param_names):
# EfficientNet image encoder
block_names = [v.split("_")[0].split("block")[1] for v in original_param_names if v.startswith("block")]
block_names = list(set(block_names))
block_names = sorted(block_names)
num_blocks = len(block_names)
block_name_mapping = {b: str(i) for b, i in zip(block_names, range(num_blocks))}
rename_keys = []
rename_keys.append(("stem_conv/kernel:0", "embeddings.convolution.weight"))
rename_keys.append(("stem_bn/gamma:0", "embeddings.batchnorm.weight"))
rename_keys.append(("stem_bn/beta:0", "embeddings.batchnorm.bias"))
rename_keys.append(("stem_bn/moving_mean:0", "embeddings.batchnorm.running_mean"))
rename_keys.append(("stem_bn/moving_variance:0", "embeddings.batchnorm.running_var"))
for b in block_names:
hf_b = block_name_mapping[b]
rename_keys.append((f"block{b}_expand_conv/kernel:0", f"encoder.blocks.{hf_b}.expansion.expand_conv.weight"))
rename_keys.append((f"block{b}_expand_bn/gamma:0", f"encoder.blocks.{hf_b}.expansion.expand_bn.weight"))
rename_keys.append((f"block{b}_expand_bn/beta:0", f"encoder.blocks.{hf_b}.expansion.expand_bn.bias"))
rename_keys.append(
(f"block{b}_expand_bn/moving_mean:0", f"encoder.blocks.{hf_b}.expansion.expand_bn.running_mean")
)
rename_keys.append(
(f"block{b}_expand_bn/moving_variance:0", f"encoder.blocks.{hf_b}.expansion.expand_bn.running_var")
)
rename_keys.append(
(f"block{b}_dwconv/depthwise_kernel:0", f"encoder.blocks.{hf_b}.depthwise_conv.depthwise_conv.weight")
)
rename_keys.append((f"block{b}_bn/gamma:0", f"encoder.blocks.{hf_b}.depthwise_conv.depthwise_norm.weight"))
rename_keys.append((f"block{b}_bn/beta:0", f"encoder.blocks.{hf_b}.depthwise_conv.depthwise_norm.bias"))
rename_keys.append(
(f"block{b}_bn/moving_mean:0", f"encoder.blocks.{hf_b}.depthwise_conv.depthwise_norm.running_mean")
)
rename_keys.append(
(f"block{b}_bn/moving_variance:0", f"encoder.blocks.{hf_b}.depthwise_conv.depthwise_norm.running_var")
)
rename_keys.append((f"block{b}_se_reduce/kernel:0", f"encoder.blocks.{hf_b}.squeeze_excite.reduce.weight"))
rename_keys.append((f"block{b}_se_reduce/bias:0", f"encoder.blocks.{hf_b}.squeeze_excite.reduce.bias"))
rename_keys.append((f"block{b}_se_expand/kernel:0", f"encoder.blocks.{hf_b}.squeeze_excite.expand.weight"))
rename_keys.append((f"block{b}_se_expand/bias:0", f"encoder.blocks.{hf_b}.squeeze_excite.expand.bias"))
rename_keys.append(
(f"block{b}_project_conv/kernel:0", f"encoder.blocks.{hf_b}.projection.project_conv.weight")
)
rename_keys.append((f"block{b}_project_bn/gamma:0", f"encoder.blocks.{hf_b}.projection.project_bn.weight"))
rename_keys.append((f"block{b}_project_bn/beta:0", f"encoder.blocks.{hf_b}.projection.project_bn.bias"))
rename_keys.append(
(f"block{b}_project_bn/moving_mean:0", f"encoder.blocks.{hf_b}.projection.project_bn.running_mean")
)
rename_keys.append(
(f"block{b}_project_bn/moving_variance:0", f"encoder.blocks.{hf_b}.projection.project_bn.running_var")
)
key_mapping = {}
for item in rename_keys:
if item[0] in original_param_names:
key_mapping[item[0]] = "vision_model." + item[1]
# BERT text encoder
rename_keys = []
old = "tf_bert_model/bert"
new = "text_model"
for i in range(12):
rename_keys.append(
(
f"{old}/encoder/layer_._{i}/attention/self/query/kernel:0",
f"{new}.encoder.layer.{i}.attention.self.query.weight",
)
)
rename_keys.append(
(
f"{old}/encoder/layer_._{i}/attention/self/query/bias:0",
f"{new}.encoder.layer.{i}.attention.self.query.bias",
)
)
rename_keys.append(
(
f"{old}/encoder/layer_._{i}/attention/self/key/kernel:0",
f"{new}.encoder.layer.{i}.attention.self.key.weight",
)
)
rename_keys.append(
(
f"{old}/encoder/layer_._{i}/attention/self/key/bias:0",
f"{new}.encoder.layer.{i}.attention.self.key.bias",
)
)
rename_keys.append(
(
f"{old}/encoder/layer_._{i}/attention/self/value/kernel:0",
f"{new}.encoder.layer.{i}.attention.self.value.weight",
)
)
rename_keys.append(
(
f"{old}/encoder/layer_._{i}/attention/self/value/bias:0",
f"{new}.encoder.layer.{i}.attention.self.value.bias",
)
)
rename_keys.append(
(
f"{old}/encoder/layer_._{i}/attention/output/dense/kernel:0",
f"{new}.encoder.layer.{i}.attention.output.dense.weight",
)
)
rename_keys.append(
(
f"{old}/encoder/layer_._{i}/attention/output/dense/bias:0",
f"{new}.encoder.layer.{i}.attention.output.dense.bias",
)
)
rename_keys.append(
(
f"{old}/encoder/layer_._{i}/attention/output/LayerNorm/gamma:0",
f"{new}.encoder.layer.{i}.attention.output.LayerNorm.weight",
)
)
rename_keys.append(
(
f"{old}/encoder/layer_._{i}/attention/output/LayerNorm/beta:0",
f"{new}.encoder.layer.{i}.attention.output.LayerNorm.bias",
)
)
rename_keys.append(
(
f"{old}/encoder/layer_._{i}/intermediate/dense/kernel:0",
f"{new}.encoder.layer.{i}.intermediate.dense.weight",
)
)
rename_keys.append(
(
f"{old}/encoder/layer_._{i}/intermediate/dense/bias:0",
f"{new}.encoder.layer.{i}.intermediate.dense.bias",
)
)
rename_keys.append(
(f"{old}/encoder/layer_._{i}/output/dense/kernel:0", f"{new}.encoder.layer.{i}.output.dense.weight")
)
rename_keys.append(
(f"{old}/encoder/layer_._{i}/output/dense/bias:0", f"{new}.encoder.layer.{i}.output.dense.bias")
)
rename_keys.append(
(f"{old}/encoder/layer_._{i}/output/LayerNorm/gamma:0", f"{new}.encoder.layer.{i}.output.LayerNorm.weight")
)
rename_keys.append(
(f"{old}/encoder/layer_._{i}/output/LayerNorm/beta:0", f"{new}.encoder.layer.{i}.output.LayerNorm.bias")
)
rename_keys.append((f"{old}/embeddings/word_embeddings/weight:0", f"{new}.embeddings.word_embeddings.weight"))
rename_keys.append(
(f"{old}/embeddings/position_embeddings/embeddings:0", f"{new}.embeddings.position_embeddings.weight")
)
rename_keys.append(
(f"{old}/embeddings/token_type_embeddings/embeddings:0", f"{new}.embeddings.token_type_embeddings.weight")
)
rename_keys.append((f"{old}/embeddings/LayerNorm/gamma:0", f"{new}.embeddings.LayerNorm.weight"))
rename_keys.append((f"{old}/embeddings/LayerNorm/beta:0", f"{new}.embeddings.LayerNorm.bias"))
rename_keys.append((f"{old}/pooler/dense/kernel:0", f"{new}.pooler.dense.weight"))
rename_keys.append((f"{old}/pooler/dense/bias:0", f"{new}.pooler.dense.bias"))
rename_keys.append(("dense/kernel:0", "text_projection.weight"))
rename_keys.append(("dense/bias:0", "text_projection.bias"))
rename_keys.append(("dense/bias:0", "text_projection.bias"))
rename_keys.append(("temperature:0", "temperature"))
for item in rename_keys:
if item[0] in original_param_names:
key_mapping[item[0]] = item[1]
return key_mapping
def replace_params(hf_params, tf_params, key_mapping):
list(hf_params.keys())
for key, value in tf_params.items():
if key not in key_mapping:
continue
hf_key = key_mapping[key]
if "_conv" in key and "kernel" in key:
new_hf_value = torch.from_numpy(value).permute(3, 2, 0, 1)
elif "embeddings" in key:
new_hf_value = torch.from_numpy(value)
elif "depthwise_kernel" in key:
new_hf_value = torch.from_numpy(value).permute(2, 3, 0, 1)
elif "kernel" in key:
new_hf_value = torch.from_numpy(np.transpose(value))
elif "temperature" in key:
new_hf_value = value
elif "bn/gamma" or "bn/beta" in key:
new_hf_value = torch.from_numpy(np.transpose(value)).squeeze()
else:
new_hf_value = torch.from_numpy(value)
# Replace HF parameters with original TF model parameters
hf_params[hf_key].copy_(new_hf_value)
@torch.no_grad()
def convert_align_checkpoint(checkpoint_path, pytorch_dump_folder_path, save_model, push_to_hub):
"""
Copy/paste/tweak model's weights to our ALIGN structure.
"""
# Load original model
seq_length = 64
tok = Tokenizer(seq_length)
original_model = align.Align("efficientnet-b7", "bert-base", 640, seq_length, tok.get_vocab_size())
original_model.compile()
original_model.load_weights(checkpoint_path)
tf_params = original_model.trainable_variables
tf_non_train_params = original_model.non_trainable_variables
tf_params = {param.name: param.numpy() for param in tf_params}
for param in tf_non_train_params:
tf_params[param.name] = param.numpy()
tf_param_names = list(tf_params.keys())
# Load HuggingFace model
config = get_align_config()
hf_model = AlignModel(config).eval()
hf_params = hf_model.state_dict()
# Create src-to-dst parameter name mapping dictionary
print("Converting parameters...")
key_mapping = rename_keys(tf_param_names)
replace_params(hf_params, tf_params, key_mapping)
# Initialize processor
processor = get_processor()
inputs = processor(
images=prepare_img(), text="A picture of a cat", padding="max_length", max_length=64, return_tensors="pt"
)
# HF model inference
hf_model.eval()
with torch.no_grad():
outputs = hf_model(**inputs)
hf_image_features = outputs.image_embeds.detach().numpy()
hf_text_features = outputs.text_embeds.detach().numpy()
# Original model inference
original_model.trainable = False
tf_image_processor = EfficientNetImageProcessor(
do_center_crop=True,
do_rescale=False,
do_normalize=False,
include_top=False,
resample=Image.BILINEAR,
)
image = tf_image_processor(images=prepare_img(), return_tensors="tf", data_format="channels_last")["pixel_values"]
text = tok(tf.constant(["A picture of a cat"]))
image_features = original_model.image_encoder(image, training=False)
text_features = original_model.text_encoder(text, training=False)
image_features = tf.nn.l2_normalize(image_features, axis=-1)
text_features = tf.nn.l2_normalize(text_features, axis=-1)
# Check whether original and HF model outputs match -> np.allclose
if not np.allclose(image_features, hf_image_features, atol=1e-3):
raise ValueError("The predicted image features are not the same.")
if not np.allclose(text_features, hf_text_features, atol=1e-3):
raise ValueError("The predicted text features are not the same.")
print("Model outputs match!")
if save_model:
# Create folder to save model
if not os.path.isdir(pytorch_dump_folder_path):
os.mkdir(pytorch_dump_folder_path)
# Save converted model and image processor
hf_model.save_pretrained(pytorch_dump_folder_path)
processor.save_pretrained(pytorch_dump_folder_path)
if push_to_hub:
# Push model and image processor to hub
print("Pushing converted ALIGN to the hub...")
processor.push_to_hub("align-base")
hf_model.push_to_hub("align-base")
if __name__ == "__main__":
parser = argparse.ArgumentParser()
# Required parameters
parser.add_argument(
"--checkpoint_path",
default="./weights/model-weights",
type=str,
help="Path to the pretrained TF ALIGN checkpoint.",
)
parser.add_argument(
"--pytorch_dump_folder_path",
default="hf_model",
type=str,
help="Path to the output PyTorch model directory.",
)
parser.add_argument("--save_model", action="store_true", help="Save model to local")
parser.add_argument("--push_to_hub", action="store_true", help="Push model and image processor to the hub")
args = parser.parse_args()
convert_align_checkpoint(args.checkpoint_path, args.pytorch_dump_folder_path, args.save_model, args.push_to_hub)
| transformers/src/transformers/models/align/convert_align_tf_to_hf.py/0 | {
"file_path": "transformers/src/transformers/models/align/convert_align_tf_to_hf.py",
"repo_id": "transformers",
"token_count": 7042
} | 310 |
# coding=utf-8
# Copyright 2022 The HuggingFace Inc. team.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
""" AutoImageProcessor class."""
import importlib
import json
import os
import warnings
from collections import OrderedDict
from typing import Dict, Optional, Union
# Build the list of all image processors
from ...configuration_utils import PretrainedConfig
from ...dynamic_module_utils import get_class_from_dynamic_module, resolve_trust_remote_code
from ...image_processing_utils import ImageProcessingMixin
from ...utils import CONFIG_NAME, IMAGE_PROCESSOR_NAME, get_file_from_repo, logging
from .auto_factory import _LazyAutoMapping
from .configuration_auto import (
CONFIG_MAPPING_NAMES,
AutoConfig,
model_type_to_module_name,
replace_list_option_in_docstrings,
)
logger = logging.get_logger(__name__)
IMAGE_PROCESSOR_MAPPING_NAMES = OrderedDict(
[
("align", "EfficientNetImageProcessor"),
("beit", "BeitImageProcessor"),
("bit", "BitImageProcessor"),
("blip", "BlipImageProcessor"),
("blip-2", "BlipImageProcessor"),
("bridgetower", "BridgeTowerImageProcessor"),
("chinese_clip", "ChineseCLIPImageProcessor"),
("clip", "CLIPImageProcessor"),
("clipseg", "ViTImageProcessor"),
("conditional_detr", "ConditionalDetrImageProcessor"),
("convnext", "ConvNextImageProcessor"),
("convnextv2", "ConvNextImageProcessor"),
("cvt", "ConvNextImageProcessor"),
("data2vec-vision", "BeitImageProcessor"),
("deformable_detr", "DeformableDetrImageProcessor"),
("deit", "DeiTImageProcessor"),
("depth_anything", "DPTImageProcessor"),
("deta", "DetaImageProcessor"),
("detr", "DetrImageProcessor"),
("dinat", "ViTImageProcessor"),
("dinov2", "BitImageProcessor"),
("donut-swin", "DonutImageProcessor"),
("dpt", "DPTImageProcessor"),
("efficientformer", "EfficientFormerImageProcessor"),
("efficientnet", "EfficientNetImageProcessor"),
("flava", "FlavaImageProcessor"),
("focalnet", "BitImageProcessor"),
("fuyu", "FuyuImageProcessor"),
("git", "CLIPImageProcessor"),
("glpn", "GLPNImageProcessor"),
("groupvit", "CLIPImageProcessor"),
("idefics", "IdeficsImageProcessor"),
("imagegpt", "ImageGPTImageProcessor"),
("instructblip", "BlipImageProcessor"),
("kosmos-2", "CLIPImageProcessor"),
("layoutlmv2", "LayoutLMv2ImageProcessor"),
("layoutlmv3", "LayoutLMv3ImageProcessor"),
("levit", "LevitImageProcessor"),
("llava", "CLIPImageProcessor"),
("llava_next", "CLIPImageProcessor"),
("mask2former", "Mask2FormerImageProcessor"),
("maskformer", "MaskFormerImageProcessor"),
("mgp-str", "ViTImageProcessor"),
("mobilenet_v1", "MobileNetV1ImageProcessor"),
("mobilenet_v2", "MobileNetV2ImageProcessor"),
("mobilevit", "MobileViTImageProcessor"),
("mobilevit", "MobileViTImageProcessor"),
("mobilevitv2", "MobileViTImageProcessor"),
("nat", "ViTImageProcessor"),
("nougat", "NougatImageProcessor"),
("oneformer", "OneFormerImageProcessor"),
("owlv2", "Owlv2ImageProcessor"),
("owlvit", "OwlViTImageProcessor"),
("perceiver", "PerceiverImageProcessor"),
("pix2struct", "Pix2StructImageProcessor"),
("poolformer", "PoolFormerImageProcessor"),
("pvt", "PvtImageProcessor"),
("pvt_v2", "PvtImageProcessor"),
("regnet", "ConvNextImageProcessor"),
("resnet", "ConvNextImageProcessor"),
("sam", "SamImageProcessor"),
("segformer", "SegformerImageProcessor"),
("seggpt", "SegGptImageProcessor"),
("siglip", "SiglipImageProcessor"),
("swiftformer", "ViTImageProcessor"),
("swin", "ViTImageProcessor"),
("swin2sr", "Swin2SRImageProcessor"),
("swinv2", "ViTImageProcessor"),
("table-transformer", "DetrImageProcessor"),
("timesformer", "VideoMAEImageProcessor"),
("tvlt", "TvltImageProcessor"),
("tvp", "TvpImageProcessor"),
("udop", "LayoutLMv3ImageProcessor"),
("upernet", "SegformerImageProcessor"),
("van", "ConvNextImageProcessor"),
("videomae", "VideoMAEImageProcessor"),
("vilt", "ViltImageProcessor"),
("vipllava", "CLIPImageProcessor"),
("vit", "ViTImageProcessor"),
("vit_hybrid", "ViTHybridImageProcessor"),
("vit_mae", "ViTImageProcessor"),
("vit_msn", "ViTImageProcessor"),
("vitmatte", "VitMatteImageProcessor"),
("xclip", "CLIPImageProcessor"),
("yolos", "YolosImageProcessor"),
]
)
IMAGE_PROCESSOR_MAPPING = _LazyAutoMapping(CONFIG_MAPPING_NAMES, IMAGE_PROCESSOR_MAPPING_NAMES)
def image_processor_class_from_name(class_name: str):
for module_name, extractors in IMAGE_PROCESSOR_MAPPING_NAMES.items():
if class_name in extractors:
module_name = model_type_to_module_name(module_name)
module = importlib.import_module(f".{module_name}", "transformers.models")
try:
return getattr(module, class_name)
except AttributeError:
continue
for _, extractor in IMAGE_PROCESSOR_MAPPING._extra_content.items():
if getattr(extractor, "__name__", None) == class_name:
return extractor
# We did not fine the class, but maybe it's because a dep is missing. In that case, the class will be in the main
# init and we return the proper dummy to get an appropriate error message.
main_module = importlib.import_module("transformers")
if hasattr(main_module, class_name):
return getattr(main_module, class_name)
return None
def get_image_processor_config(
pretrained_model_name_or_path: Union[str, os.PathLike],
cache_dir: Optional[Union[str, os.PathLike]] = None,
force_download: bool = False,
resume_download: bool = False,
proxies: Optional[Dict[str, str]] = None,
token: Optional[Union[bool, str]] = None,
revision: Optional[str] = None,
local_files_only: bool = False,
**kwargs,
):
"""
Loads the image processor configuration from a pretrained model image processor configuration.
Args:
pretrained_model_name_or_path (`str` or `os.PathLike`):
This can be either:
- a string, the *model id* of a pretrained model configuration hosted inside a model repo on
huggingface.co.
- a path to a *directory* containing a configuration file saved using the
[`~PreTrainedTokenizer.save_pretrained`] method, e.g., `./my_model_directory/`.
cache_dir (`str` or `os.PathLike`, *optional*):
Path to a directory in which a downloaded pretrained model configuration should be cached if the standard
cache should not be used.
force_download (`bool`, *optional*, defaults to `False`):
Whether or not to force to (re-)download the configuration files and override the cached versions if they
exist.
resume_download (`bool`, *optional*, defaults to `False`):
Whether or not to delete incompletely received file. Attempts to resume the download if such a file exists.
proxies (`Dict[str, str]`, *optional*):
A dictionary of proxy servers to use by protocol or endpoint, e.g., `{'http': 'foo.bar:3128',
'http://hostname': 'foo.bar:4012'}.` The proxies are used on each request.
token (`str` or *bool*, *optional*):
The token to use as HTTP bearer authorization for remote files. If `True`, will use the token generated
when running `huggingface-cli login` (stored in `~/.huggingface`).
revision (`str`, *optional*, defaults to `"main"`):
The specific model version to use. It can be a branch name, a tag name, or a commit id, since we use a
git-based system for storing models and other artifacts on huggingface.co, so `revision` can be any
identifier allowed by git.
local_files_only (`bool`, *optional*, defaults to `False`):
If `True`, will only try to load the image processor configuration from local files.
<Tip>
Passing `token=True` is required when you want to use a private model.
</Tip>
Returns:
`Dict`: The configuration of the image processor.
Examples:
```python
# Download configuration from huggingface.co and cache.
image_processor_config = get_image_processor_config("google-bert/bert-base-uncased")
# This model does not have a image processor config so the result will be an empty dict.
image_processor_config = get_image_processor_config("FacebookAI/xlm-roberta-base")
# Save a pretrained image processor locally and you can reload its config
from transformers import AutoTokenizer
image_processor = AutoImageProcessor.from_pretrained("google/vit-base-patch16-224-in21k")
image_processor.save_pretrained("image-processor-test")
image_processor_config = get_image_processor_config("image-processor-test")
```"""
use_auth_token = kwargs.pop("use_auth_token", None)
if use_auth_token is not None:
warnings.warn(
"The `use_auth_token` argument is deprecated and will be removed in v5 of Transformers. Please use `token` instead.",
FutureWarning,
)
if token is not None:
raise ValueError("`token` and `use_auth_token` are both specified. Please set only the argument `token`.")
token = use_auth_token
resolved_config_file = get_file_from_repo(
pretrained_model_name_or_path,
IMAGE_PROCESSOR_NAME,
cache_dir=cache_dir,
force_download=force_download,
resume_download=resume_download,
proxies=proxies,
token=token,
revision=revision,
local_files_only=local_files_only,
)
if resolved_config_file is None:
logger.info(
"Could not locate the image processor configuration file, will try to use the model config instead."
)
return {}
with open(resolved_config_file, encoding="utf-8") as reader:
return json.load(reader)
class AutoImageProcessor:
r"""
This is a generic image processor class that will be instantiated as one of the image processor classes of the
library when created with the [`AutoImageProcessor.from_pretrained`] class method.
This class cannot be instantiated directly using `__init__()` (throws an error).
"""
def __init__(self):
raise EnvironmentError(
"AutoImageProcessor is designed to be instantiated "
"using the `AutoImageProcessor.from_pretrained(pretrained_model_name_or_path)` method."
)
@classmethod
@replace_list_option_in_docstrings(IMAGE_PROCESSOR_MAPPING_NAMES)
def from_pretrained(cls, pretrained_model_name_or_path, **kwargs):
r"""
Instantiate one of the image processor classes of the library from a pretrained model vocabulary.
The image processor class to instantiate is selected based on the `model_type` property of the config object
(either passed as an argument or loaded from `pretrained_model_name_or_path` if possible), or when it's
missing, by falling back to using pattern matching on `pretrained_model_name_or_path`:
List options
Params:
pretrained_model_name_or_path (`str` or `os.PathLike`):
This can be either:
- a string, the *model id* of a pretrained image_processor hosted inside a model repo on
huggingface.co.
- a path to a *directory* containing a image processor file saved using the
[`~image_processing_utils.ImageProcessingMixin.save_pretrained`] method, e.g.,
`./my_model_directory/`.
- a path or url to a saved image processor JSON *file*, e.g.,
`./my_model_directory/preprocessor_config.json`.
cache_dir (`str` or `os.PathLike`, *optional*):
Path to a directory in which a downloaded pretrained model image processor should be cached if the
standard cache should not be used.
force_download (`bool`, *optional*, defaults to `False`):
Whether or not to force to (re-)download the image processor files and override the cached versions if
they exist.
resume_download (`bool`, *optional*, defaults to `False`):
Whether or not to delete incompletely received file. Attempts to resume the download if such a file
exists.
proxies (`Dict[str, str]`, *optional*):
A dictionary of proxy servers to use by protocol or endpoint, e.g., `{'http': 'foo.bar:3128',
'http://hostname': 'foo.bar:4012'}.` The proxies are used on each request.
token (`str` or *bool*, *optional*):
The token to use as HTTP bearer authorization for remote files. If `True`, will use the token generated
when running `huggingface-cli login` (stored in `~/.huggingface`).
revision (`str`, *optional*, defaults to `"main"`):
The specific model version to use. It can be a branch name, a tag name, or a commit id, since we use a
git-based system for storing models and other artifacts on huggingface.co, so `revision` can be any
identifier allowed by git.
return_unused_kwargs (`bool`, *optional*, defaults to `False`):
If `False`, then this function returns just the final image processor object. If `True`, then this
functions returns a `Tuple(image_processor, unused_kwargs)` where *unused_kwargs* is a dictionary
consisting of the key/value pairs whose keys are not image processor attributes: i.e., the part of
`kwargs` which has not been used to update `image_processor` and is otherwise ignored.
trust_remote_code (`bool`, *optional*, defaults to `False`):
Whether or not to allow for custom models defined on the Hub in their own modeling files. This option
should only be set to `True` for repositories you trust and in which you have read the code, as it will
execute code present on the Hub on your local machine.
kwargs (`Dict[str, Any]`, *optional*):
The values in kwargs of any keys which are image processor attributes will be used to override the
loaded values. Behavior concerning key/value pairs whose keys are *not* image processor attributes is
controlled by the `return_unused_kwargs` keyword parameter.
<Tip>
Passing `token=True` is required when you want to use a private model.
</Tip>
Examples:
```python
>>> from transformers import AutoImageProcessor
>>> # Download image processor from huggingface.co and cache.
>>> image_processor = AutoImageProcessor.from_pretrained("google/vit-base-patch16-224-in21k")
>>> # If image processor files are in a directory (e.g. image processor was saved using *save_pretrained('./test/saved_model/')*)
>>> # image_processor = AutoImageProcessor.from_pretrained("./test/saved_model/")
```"""
use_auth_token = kwargs.pop("use_auth_token", None)
if use_auth_token is not None:
warnings.warn(
"The `use_auth_token` argument is deprecated and will be removed in v5 of Transformers. Please use `token` instead.",
FutureWarning,
)
if kwargs.get("token", None) is not None:
raise ValueError(
"`token` and `use_auth_token` are both specified. Please set only the argument `token`."
)
kwargs["token"] = use_auth_token
config = kwargs.pop("config", None)
trust_remote_code = kwargs.pop("trust_remote_code", None)
kwargs["_from_auto"] = True
config_dict, _ = ImageProcessingMixin.get_image_processor_dict(pretrained_model_name_or_path, **kwargs)
image_processor_class = config_dict.get("image_processor_type", None)
image_processor_auto_map = None
if "AutoImageProcessor" in config_dict.get("auto_map", {}):
image_processor_auto_map = config_dict["auto_map"]["AutoImageProcessor"]
# If we still don't have the image processor class, check if we're loading from a previous feature extractor config
# and if so, infer the image processor class from there.
if image_processor_class is None and image_processor_auto_map is None:
feature_extractor_class = config_dict.pop("feature_extractor_type", None)
if feature_extractor_class is not None:
logger.warning(
"Could not find image processor class in the image processor config or the model config. Loading "
"based on pattern matching with the model's feature extractor configuration. Please open a "
"PR/issue to update `preprocessor_config.json` to use `image_processor_type` instead of "
"`feature_extractor_type`. This warning will be removed in v4.40."
)
image_processor_class = feature_extractor_class.replace("FeatureExtractor", "ImageProcessor")
if "AutoFeatureExtractor" in config_dict.get("auto_map", {}):
feature_extractor_auto_map = config_dict["auto_map"]["AutoFeatureExtractor"]
image_processor_auto_map = feature_extractor_auto_map.replace("FeatureExtractor", "ImageProcessor")
logger.warning(
"Could not find image processor auto map in the image processor config or the model config. "
"Loading based on pattern matching with the model's feature extractor configuration. Please open a "
"PR/issue to update `preprocessor_config.json` to use `AutoImageProcessor` instead of "
"`AutoFeatureExtractor`. This warning will be removed in v4.40."
)
# If we don't find the image processor class in the image processor config, let's try the model config.
if image_processor_class is None and image_processor_auto_map is None:
if not isinstance(config, PretrainedConfig):
config = AutoConfig.from_pretrained(pretrained_model_name_or_path, **kwargs)
# It could be in `config.image_processor_type``
image_processor_class = getattr(config, "image_processor_type", None)
if hasattr(config, "auto_map") and "AutoImageProcessor" in config.auto_map:
image_processor_auto_map = config.auto_map["AutoImageProcessor"]
if image_processor_class is not None:
image_processor_class = image_processor_class_from_name(image_processor_class)
has_remote_code = image_processor_auto_map is not None
has_local_code = image_processor_class is not None or type(config) in IMAGE_PROCESSOR_MAPPING
trust_remote_code = resolve_trust_remote_code(
trust_remote_code, pretrained_model_name_or_path, has_local_code, has_remote_code
)
if has_remote_code and trust_remote_code:
image_processor_class = get_class_from_dynamic_module(
image_processor_auto_map, pretrained_model_name_or_path, **kwargs
)
_ = kwargs.pop("code_revision", None)
if os.path.isdir(pretrained_model_name_or_path):
image_processor_class.register_for_auto_class()
return image_processor_class.from_dict(config_dict, **kwargs)
elif image_processor_class is not None:
return image_processor_class.from_dict(config_dict, **kwargs)
# Last try: we use the IMAGE_PROCESSOR_MAPPING.
elif type(config) in IMAGE_PROCESSOR_MAPPING:
image_processor_class = IMAGE_PROCESSOR_MAPPING[type(config)]
return image_processor_class.from_dict(config_dict, **kwargs)
raise ValueError(
f"Unrecognized image processor in {pretrained_model_name_or_path}. Should have a "
f"`image_processor_type` key in its {IMAGE_PROCESSOR_NAME} of {CONFIG_NAME}, or one of the following "
f"`model_type` keys in its {CONFIG_NAME}: {', '.join(c for c in IMAGE_PROCESSOR_MAPPING_NAMES.keys())}"
)
@staticmethod
def register(config_class, image_processor_class, exist_ok=False):
"""
Register a new image processor for this class.
Args:
config_class ([`PretrainedConfig`]):
The configuration corresponding to the model to register.
image_processor_class ([`ImageProcessingMixin`]): The image processor to register.
"""
IMAGE_PROCESSOR_MAPPING.register(config_class, image_processor_class, exist_ok=exist_ok)
| transformers/src/transformers/models/auto/image_processing_auto.py/0 | {
"file_path": "transformers/src/transformers/models/auto/image_processing_auto.py",
"repo_id": "transformers",
"token_count": 8609
} | 311 |
# coding=utf-8
# Copyright 2021 The HuggingFace Inc. team.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import argparse
from typing import Dict
import tensorflow as tf
import torch
from tqdm import tqdm
from transformers import BigBirdPegasusConfig, BigBirdPegasusForConditionalGeneration
INIT_COMMON = [
# tf -> hf
("/", "."),
("layer_", "layers."),
("kernel", "weight"),
("beta", "bias"),
("gamma", "weight"),
("pegasus", "model"),
]
END_COMMON = [
(".output.dense", ".fc2"),
("intermediate.LayerNorm", "final_layer_norm"),
("intermediate.dense", "fc1"),
]
DECODER_PATTERNS = (
INIT_COMMON
+ [
("attention.self.LayerNorm", "self_attn_layer_norm"),
("attention.output.dense", "self_attn.out_proj"),
("attention.self", "self_attn"),
("attention.encdec.LayerNorm", "encoder_attn_layer_norm"),
("attention.encdec_output.dense", "encoder_attn.out_proj"),
("attention.encdec", "encoder_attn"),
("key", "k_proj"),
("value", "v_proj"),
("query", "q_proj"),
("decoder.LayerNorm", "decoder.layernorm_embedding"),
]
+ END_COMMON
)
REMAINING_PATTERNS = (
INIT_COMMON
+ [
("embeddings.word_embeddings", "shared.weight"),
("embeddings.position_embeddings", "embed_positions.weight"),
("attention.self.LayerNorm", "self_attn_layer_norm"),
("attention.output.dense", "self_attn.output"),
("attention.self", "self_attn.self"),
("encoder.LayerNorm", "encoder.layernorm_embedding"),
]
+ END_COMMON
)
KEYS_TO_IGNORE = [
"encdec/key/bias",
"encdec/query/bias",
"encdec/value/bias",
"self/key/bias",
"self/query/bias",
"self/value/bias",
"encdec_output/dense/bias",
"attention/output/dense/bias",
]
def rename_state_dict_key(k, patterns):
for tf_name, hf_name in patterns:
k = k.replace(tf_name, hf_name)
return k
def convert_bigbird_pegasus(tf_weights: dict, config_update: dict) -> BigBirdPegasusForConditionalGeneration:
cfg = BigBirdPegasusConfig(**config_update)
torch_model = BigBirdPegasusForConditionalGeneration(cfg)
state_dict = torch_model.state_dict()
mapping = {}
# separating decoder weights
decoder_weights = {k: tf_weights[k] for k in tf_weights if k.startswith("pegasus/decoder")}
remaining_weights = {k: tf_weights[k] for k in tf_weights if not k.startswith("pegasus/decoder")}
for k, v in tqdm(decoder_weights.items(), "tf -> hf conversion"):
conditions = [k.endswith(ending) for ending in KEYS_TO_IGNORE]
if any(conditions):
continue
patterns = DECODER_PATTERNS
new_k = rename_state_dict_key(k, patterns)
if new_k not in state_dict:
raise ValueError(f"could not find new key {new_k} in state dict. (converted from {k})")
if any(True if i in k else False for i in ["dense", "query", "key", "value"]):
v = v.T
mapping[new_k] = torch.from_numpy(v)
assert v.shape == state_dict[new_k].shape, f"{new_k}, {k}, {v.shape}, {state_dict[new_k].shape}"
for k, v in tqdm(remaining_weights.items(), "tf -> hf conversion"):
conditions = [k.endswith(ending) for ending in KEYS_TO_IGNORE]
if any(conditions):
continue
patterns = REMAINING_PATTERNS
new_k = rename_state_dict_key(k, patterns)
if new_k not in state_dict and k != "pegasus/embeddings/position_embeddings":
raise ValueError(f"could not find new key {new_k} in state dict. (converted from {k})")
if any(True if i in k else False for i in ["dense", "query", "key", "value"]):
v = v.T
mapping[new_k] = torch.from_numpy(v)
if k != "pegasus/embeddings/position_embeddings":
assert v.shape == state_dict[new_k].shape, f"{new_k}, {k}, {v.shape}, {state_dict[new_k].shape}"
mapping["model.encoder.embed_positions.weight"] = mapping["model.embed_positions.weight"]
mapping["model.decoder.embed_positions.weight"] = mapping.pop("model.embed_positions.weight")
missing, extra = torch_model.load_state_dict(mapping, strict=False)
unexpected_missing = [
k
for k in missing
if k
not in [
"final_logits_bias",
"model.encoder.embed_tokens.weight",
"model.decoder.embed_tokens.weight",
"lm_head.weight",
]
]
assert unexpected_missing == [], f"no matches found for the following torch keys {unexpected_missing}"
assert extra == [], f"no matches found for the following tf keys {extra}"
return torch_model
def get_tf_weights_as_numpy(path) -> Dict:
init_vars = tf.train.list_variables(path)
tf_weights = {}
ignore_name = ["global_step"]
for name, shape in tqdm(init_vars, desc="converting tf checkpoint to dict"):
skip_key = any(pat in name for pat in ignore_name)
if skip_key:
continue
array = tf.train.load_variable(path, name)
tf_weights[name] = array
return tf_weights
def convert_bigbird_pegasus_ckpt_to_pytorch(ckpt_path: str, save_dir: str, config_update: dict):
tf_weights = get_tf_weights_as_numpy(ckpt_path)
torch_model = convert_bigbird_pegasus(tf_weights, config_update)
torch_model.save_pretrained(save_dir)
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument("--tf_ckpt_path", type=str, help="passed to tf.train.list_variables")
parser.add_argument("--save_dir", default=None, type=str, help="Path to the output PyTorch model.")
args = parser.parse_args()
config_update = {}
convert_bigbird_pegasus_ckpt_to_pytorch(args.tf_ckpt_path, args.save_dir, config_update=config_update)
| transformers/src/transformers/models/bigbird_pegasus/convert_bigbird_pegasus_tf_to_pytorch.py/0 | {
"file_path": "transformers/src/transformers/models/bigbird_pegasus/convert_bigbird_pegasus_tf_to_pytorch.py",
"repo_id": "transformers",
"token_count": 2618
} | 312 |
# coding=utf-8
# Copyright 2022 The Salesforce Team Authors and The HuggingFace Team. All rights reserved.
#
# Licensed under the BSD-3-clause license (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://opensource.org/licenses/BSD-3-Clause
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import math
from typing import List, Optional, Tuple, Union
import torch
import torch.utils.checkpoint
from torch import Tensor, device, nn
from torch.nn import CrossEntropyLoss
from ...activations import ACT2FN
from ...modeling_outputs import (
BaseModelOutputWithPastAndCrossAttentions,
BaseModelOutputWithPoolingAndCrossAttentions,
CausalLMOutputWithCrossAttentions,
)
from ...modeling_utils import (
PreTrainedModel,
apply_chunking_to_forward,
find_pruneable_heads_and_indices,
prune_linear_layer,
)
from ...utils import logging
from .configuration_blip import BlipTextConfig
logger = logging.get_logger(__name__)
# Adapted from https://github.com/salesforce/BLIP/blob/main/models/med.py#L52
class BlipTextEmbeddings(nn.Module):
"""Construct the embeddings from word and position embeddings."""
def __init__(self, config):
super().__init__()
self.word_embeddings = nn.Embedding(config.vocab_size, config.hidden_size, padding_idx=config.pad_token_id)
self.position_embeddings = nn.Embedding(config.max_position_embeddings, config.hidden_size)
# self.LayerNorm is not snake-cased to stick with TensorFlow model variable name and be able to load
# any TensorFlow checkpoint file
self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps)
self.dropout = nn.Dropout(config.hidden_dropout_prob)
# position_ids (1, len position emb) is contiguous in memory and exported when serialized
self.register_buffer(
"position_ids", torch.arange(config.max_position_embeddings).expand((1, -1)), persistent=False
)
self.position_embedding_type = getattr(config, "position_embedding_type", "absolute")
self.config = config
def forward(
self,
input_ids: Optional[torch.LongTensor] = None,
position_ids: Optional[torch.LongTensor] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
past_key_values_length: int = 0,
) -> torch.Tensor:
if input_ids is not None:
input_shape = input_ids.size()
else:
input_shape = inputs_embeds.size()[:-1]
seq_length = input_shape[1]
if position_ids is None:
position_ids = self.position_ids[:, past_key_values_length : seq_length + past_key_values_length]
if inputs_embeds is None:
input_ids = input_ids.to(self.word_embeddings.weight.device)
inputs_embeds = self.word_embeddings(input_ids)
embeddings = inputs_embeds
if self.position_embedding_type == "absolute":
position_embeddings = self.position_embeddings(position_ids)
embeddings += position_embeddings
embeddings = self.LayerNorm(embeddings)
embeddings = self.dropout(embeddings)
return embeddings
# Adapted from https://github.com/salesforce/BLIP/blob/main/models/med.py#L97
class BlipTextSelfAttention(nn.Module):
def __init__(self, config, is_cross_attention):
super().__init__()
self.config = config
if config.hidden_size % config.num_attention_heads != 0 and not hasattr(config, "embedding_size"):
raise ValueError(
"The hidden size (%d) is not a multiple of the number of attention heads (%d)"
% (config.hidden_size, config.num_attention_heads)
)
self.num_attention_heads = config.num_attention_heads
self.attention_head_size = int(config.hidden_size / config.num_attention_heads)
self.all_head_size = self.num_attention_heads * self.attention_head_size
self.query = nn.Linear(config.hidden_size, self.all_head_size)
if is_cross_attention:
self.key = nn.Linear(config.encoder_hidden_size, self.all_head_size)
self.value = nn.Linear(config.encoder_hidden_size, self.all_head_size)
else:
self.key = nn.Linear(config.hidden_size, self.all_head_size)
self.value = nn.Linear(config.hidden_size, self.all_head_size)
self.dropout = nn.Dropout(config.attention_probs_dropout_prob)
self.position_embedding_type = getattr(config, "position_embedding_type", "absolute")
if self.position_embedding_type == "relative_key" or self.position_embedding_type == "relative_key_query":
self.max_position_embeddings = config.max_position_embeddings
self.distance_embedding = nn.Embedding(2 * config.max_position_embeddings - 1, self.attention_head_size)
def save_attn_gradients(self, attn_gradients):
self.attn_gradients = attn_gradients
def get_attn_gradients(self):
return self.attn_gradients
def save_attention_map(self, attention_map):
self.attention_map = attention_map
def get_attention_map(self):
return self.attention_map
def transpose_for_scores(self, x):
new_x_shape = x.size()[:-1] + (self.num_attention_heads, self.attention_head_size)
x = x.view(*new_x_shape)
return x.permute(0, 2, 1, 3)
def forward(
self,
hidden_states: torch.Tensor,
attention_mask: Optional[torch.FloatTensor] = None,
head_mask: Optional[torch.FloatTensor] = None,
encoder_hidden_states: Optional[torch.FloatTensor] = None,
encoder_attention_mask: Optional[torch.FloatTensor] = None,
past_key_value: Optional[Tuple[Tuple[torch.FloatTensor]]] = None,
output_attentions: Optional[bool] = False,
) -> Tuple[torch.Tensor]:
mixed_query_layer = self.query(hidden_states)
# If this is instantiated as a cross-attention module, the keys
# and values come from an encoder; the attention mask needs to be
# such that the encoder's padding tokens are not attended to.
is_cross_attention = encoder_hidden_states is not None
if is_cross_attention:
key_layer = self.transpose_for_scores(self.key(encoder_hidden_states))
value_layer = self.transpose_for_scores(self.value(encoder_hidden_states))
attention_mask = encoder_attention_mask
elif past_key_value is not None:
key_layer = self.transpose_for_scores(self.key(hidden_states))
value_layer = self.transpose_for_scores(self.value(hidden_states))
key_layer = torch.cat([past_key_value[0], key_layer], dim=2)
value_layer = torch.cat([past_key_value[1], value_layer], dim=2)
else:
key_layer = self.transpose_for_scores(self.key(hidden_states))
value_layer = self.transpose_for_scores(self.value(hidden_states))
query_layer = self.transpose_for_scores(mixed_query_layer)
past_key_value = (key_layer, value_layer)
# Take the dot product between "query" and "key" to get the raw attention scores.
attention_scores = torch.matmul(query_layer, key_layer.transpose(-1, -2))
if self.position_embedding_type == "relative_key" or self.position_embedding_type == "relative_key_query":
seq_length = hidden_states.size()[1]
position_ids_l = torch.arange(seq_length, dtype=torch.long, device=hidden_states.device).view(-1, 1)
position_ids_r = torch.arange(seq_length, dtype=torch.long, device=hidden_states.device).view(1, -1)
distance = position_ids_l - position_ids_r
positional_embedding = self.distance_embedding(distance + self.max_position_embeddings - 1)
positional_embedding = positional_embedding.to(dtype=query_layer.dtype) # fp16 compatibility
if self.position_embedding_type == "relative_key":
relative_position_scores = torch.einsum("bhld,lrd->bhlr", query_layer, positional_embedding)
attention_scores = attention_scores + relative_position_scores
elif self.position_embedding_type == "relative_key_query":
relative_position_scores_query = torch.einsum("bhld,lrd->bhlr", query_layer, positional_embedding)
relative_position_scores_key = torch.einsum("bhrd,lrd->bhlr", key_layer, positional_embedding)
attention_scores = attention_scores + relative_position_scores_query + relative_position_scores_key
attention_scores = attention_scores / math.sqrt(self.attention_head_size)
if attention_mask is not None:
# Apply the attention mask is (precomputed for all layers in BlipTextModel forward() function)
attention_scores = attention_scores + attention_mask.to(attention_scores.device)
# Normalize the attention scores to probabilities.
attention_probs = nn.Softmax(dim=-1)(attention_scores)
# This is actually dropping out entire tokens to attend to, which might
# seem a bit unusual, but is taken from the original Transformer paper.
attention_probs_dropped = self.dropout(attention_probs)
# Mask heads if we want to
if head_mask is not None:
attention_probs_dropped = attention_probs_dropped * head_mask
context_layer = torch.matmul(attention_probs_dropped, value_layer)
context_layer = context_layer.permute(0, 2, 1, 3).contiguous()
new_context_layer_shape = context_layer.size()[:-2] + (self.all_head_size,)
context_layer = context_layer.view(*new_context_layer_shape)
outputs = (context_layer, attention_probs) if output_attentions else (context_layer,)
outputs = outputs + (past_key_value,)
return outputs
# Copied from transformers.models.bert.modeling_bert.BertSelfOutput with Bert -> BlipText
class BlipTextSelfOutput(nn.Module):
def __init__(self, config):
super().__init__()
self.dense = nn.Linear(config.hidden_size, config.hidden_size)
self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps)
self.dropout = nn.Dropout(config.hidden_dropout_prob)
def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor:
hidden_states = self.dense(hidden_states)
hidden_states = self.dropout(hidden_states)
hidden_states = self.LayerNorm(hidden_states + input_tensor)
return hidden_states
# Adapted from https://github.com/salesforce/BLIP/blob/main/models/med.py#242
class BlipTextAttention(nn.Module):
def __init__(self, config, is_cross_attention=False):
super().__init__()
self.self = BlipTextSelfAttention(config, is_cross_attention)
self.output = BlipTextSelfOutput(config)
self.pruned_heads = set()
def prune_heads(self, heads):
if len(heads) == 0:
return
heads, index = find_pruneable_heads_and_indices(
heads, self.self.num_attention_heads, self.self.attention_head_size, self.pruned_heads
)
# Prune linear layers
self.self.query = prune_linear_layer(self.self.query, index)
self.self.key = prune_linear_layer(self.self.key, index)
self.self.value = prune_linear_layer(self.self.value, index)
self.output.dense = prune_linear_layer(self.output.dense, index, dim=1)
# Update hyper params and store pruned heads
self.self.num_attention_heads = self.self.num_attention_heads - len(heads)
self.self.all_head_size = self.self.attention_head_size * self.self.num_attention_heads
self.pruned_heads = self.pruned_heads.union(heads)
def forward(
self,
hidden_states: torch.Tensor,
attention_mask: Optional[torch.FloatTensor] = None,
head_mask: Optional[torch.FloatTensor] = None,
encoder_hidden_states: Optional[torch.FloatTensor] = None,
encoder_attention_mask: Optional[torch.FloatTensor] = None,
past_key_value: Optional[Tuple[Tuple[torch.FloatTensor]]] = None,
output_attentions: Optional[bool] = False,
) -> Tuple[torch.Tensor]:
self_outputs = self.self(
hidden_states,
attention_mask,
head_mask,
encoder_hidden_states,
encoder_attention_mask,
past_key_value,
output_attentions,
)
attention_output = self.output(self_outputs[0], hidden_states)
outputs = (attention_output,) + self_outputs[1:] # add attentions if we output them
return outputs
# Copied from transformers.models.bert.modeling_bert.BertIntermediate with Bert -> BlipText
class BlipTextIntermediate(nn.Module):
def __init__(self, config):
super().__init__()
self.dense = nn.Linear(config.hidden_size, config.intermediate_size)
if isinstance(config.hidden_act, str):
self.intermediate_act_fn = ACT2FN[config.hidden_act]
else:
self.intermediate_act_fn = config.hidden_act
def forward(self, hidden_states: torch.Tensor) -> torch.Tensor:
hidden_states = self.dense(hidden_states)
hidden_states = self.intermediate_act_fn(hidden_states)
return hidden_states
# Copied from transformers.models.bert.modeling_bert.BertOutput with Bert -> BlipText
class BlipTextOutput(nn.Module):
def __init__(self, config):
super().__init__()
self.dense = nn.Linear(config.intermediate_size, config.hidden_size)
self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps)
self.dropout = nn.Dropout(config.hidden_dropout_prob)
def forward(self, hidden_states: torch.Tensor, input_tensor: torch.Tensor) -> torch.Tensor:
hidden_states = self.dense(hidden_states)
hidden_states = self.dropout(hidden_states)
hidden_states = self.LayerNorm(hidden_states + input_tensor)
return hidden_states
class BlipTextLayer(nn.Module):
def __init__(self, config, layer_num):
super().__init__()
self.config = config
self.chunk_size_feed_forward = config.chunk_size_feed_forward
self.seq_len_dim = 1
self.attention = BlipTextAttention(config)
self.layer_num = layer_num
if self.config.is_decoder:
self.crossattention = BlipTextAttention(config, is_cross_attention=self.config.is_decoder)
self.intermediate = BlipTextIntermediate(config)
self.output = BlipTextOutput(config)
def forward(
self,
hidden_states: torch.Tensor,
attention_mask: Optional[torch.FloatTensor] = None,
head_mask: Optional[torch.FloatTensor] = None,
encoder_hidden_states: Optional[torch.FloatTensor] = None,
encoder_attention_mask: Optional[torch.FloatTensor] = None,
past_key_value: Optional[Tuple[Tuple[torch.FloatTensor]]] = None,
output_attentions: Optional[bool] = False,
) -> Tuple[torch.Tensor]:
# decoder uni-directional self-attention cached key/values tuple is at positions 1,2
self_attn_past_key_value = past_key_value[:2] if past_key_value is not None else None
self_attention_outputs = self.attention(
hidden_states,
attention_mask,
head_mask,
output_attentions=output_attentions,
past_key_value=self_attn_past_key_value,
)
attention_output = self_attention_outputs[0]
outputs = self_attention_outputs[1:-1]
present_key_value = self_attention_outputs[-1]
if encoder_hidden_states is not None:
cross_attention_outputs = self.crossattention(
attention_output,
attention_mask,
head_mask,
encoder_hidden_states,
encoder_attention_mask,
output_attentions=output_attentions,
)
attention_output = cross_attention_outputs[0]
outputs = outputs + cross_attention_outputs[1:-1] # add cross attentions if we output attention weights
layer_output = apply_chunking_to_forward(
self.feed_forward_chunk, self.chunk_size_feed_forward, self.seq_len_dim, attention_output
)
outputs = (layer_output,) + outputs
outputs = outputs + (present_key_value,)
return outputs
def feed_forward_chunk(self, attention_output):
intermediate_output = self.intermediate(attention_output)
layer_output = self.output(intermediate_output, attention_output)
return layer_output
# Adapted from https://github.com/salesforce/BLIP/blob/main/models/med.py#L386
class BlipTextEncoder(nn.Module):
def __init__(self, config):
super().__init__()
self.config = config
self.layer = nn.ModuleList([BlipTextLayer(config, i) for i in range(config.num_hidden_layers)])
self.gradient_checkpointing = False
def forward(
self,
hidden_states: torch.Tensor,
attention_mask: Optional[torch.FloatTensor] = None,
head_mask: Optional[torch.FloatTensor] = None,
encoder_hidden_states: Optional[torch.FloatTensor] = None,
encoder_attention_mask: Optional[torch.FloatTensor] = None,
past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None,
use_cache: Optional[bool] = None,
output_attentions: Optional[bool] = False,
output_hidden_states: Optional[bool] = False,
return_dict: Optional[bool] = True,
) -> Union[Tuple[torch.Tensor], BaseModelOutputWithPastAndCrossAttentions]:
if self.gradient_checkpointing and self.training:
if use_cache:
logger.warning(
"`use_cache=True` is incompatible with gradient checkpointing. Setting `use_cache=False`..."
)
use_cache = False
all_hidden_states = () if output_hidden_states else None
all_self_attentions = () if output_attentions else None
all_cross_attentions = () if output_attentions and self.config.is_decoder else None
next_decoder_cache = () if use_cache else None
for i in range(self.config.num_hidden_layers):
layer_module = self.layer[i]
if output_hidden_states:
all_hidden_states = all_hidden_states + (hidden_states,)
layer_head_mask = head_mask[i] if head_mask is not None else None
past_key_value = past_key_values[i] if past_key_values is not None else None
if self.gradient_checkpointing and self.training:
layer_outputs = self._gradient_checkpointing_func(
layer_module.__call__,
hidden_states,
attention_mask,
layer_head_mask,
encoder_hidden_states,
encoder_attention_mask,
past_key_value,
output_attentions,
)
else:
layer_outputs = layer_module(
hidden_states,
attention_mask,
layer_head_mask,
encoder_hidden_states,
encoder_attention_mask,
past_key_value,
output_attentions,
)
hidden_states = layer_outputs[0]
if use_cache:
next_decoder_cache += (layer_outputs[-1],)
if output_attentions:
all_self_attentions = all_self_attentions + (layer_outputs[1],)
all_cross_attentions = all_cross_attentions + (layer_outputs[2],)
if output_hidden_states:
all_hidden_states = all_hidden_states + (hidden_states,)
if not return_dict:
return tuple(
v
for v in [
hidden_states,
next_decoder_cache,
all_hidden_states,
all_self_attentions,
all_cross_attentions,
]
if v is not None
)
return BaseModelOutputWithPastAndCrossAttentions(
last_hidden_state=hidden_states,
past_key_values=next_decoder_cache,
hidden_states=all_hidden_states,
attentions=all_self_attentions,
cross_attentions=all_cross_attentions,
)
# Copied from transformers.models.bert.modeling_bert.BertPooler with Bert->BlipText
class BlipTextPooler(nn.Module):
def __init__(self, config):
super().__init__()
self.dense = nn.Linear(config.hidden_size, config.hidden_size)
self.activation = nn.Tanh()
def forward(self, hidden_states: torch.Tensor) -> torch.Tensor:
# We "pool" the model by simply taking the hidden state corresponding
# to the first token.
first_token_tensor = hidden_states[:, 0]
pooled_output = self.dense(first_token_tensor)
pooled_output = self.activation(pooled_output)
return pooled_output
# Copied from transformers.models.bert.modeling_bert.BertPredictionHeadTransform with Bert->BlipText
class BlipTextPredictionHeadTransform(nn.Module):
def __init__(self, config):
super().__init__()
self.dense = nn.Linear(config.hidden_size, config.hidden_size)
if isinstance(config.hidden_act, str):
self.transform_act_fn = ACT2FN[config.hidden_act]
else:
self.transform_act_fn = config.hidden_act
self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps)
def forward(self, hidden_states: torch.Tensor) -> torch.Tensor:
hidden_states = self.dense(hidden_states)
hidden_states = self.transform_act_fn(hidden_states)
hidden_states = self.LayerNorm(hidden_states)
return hidden_states
# Copied from transformers.models.bert.modeling_bert.BertLMPredictionHead with Bert->BlipText
class BlipTextLMPredictionHead(nn.Module):
def __init__(self, config):
super().__init__()
self.transform = BlipTextPredictionHeadTransform(config)
# The output weights are the same as the input embeddings, but there is
# an output-only bias for each token.
self.decoder = nn.Linear(config.hidden_size, config.vocab_size, bias=False)
self.bias = nn.Parameter(torch.zeros(config.vocab_size))
# Need a link between the two variables so that the bias is correctly resized with `resize_token_embeddings`
self.decoder.bias = self.bias
def forward(self, hidden_states):
hidden_states = self.transform(hidden_states)
hidden_states = self.decoder(hidden_states)
return hidden_states
# Copied from transformers.models.bert.modeling_bert.BertOnlyMLMHead with Bert->BlipText
class BlipTextOnlyMLMHead(nn.Module):
def __init__(self, config):
super().__init__()
self.predictions = BlipTextLMPredictionHead(config)
def forward(self, sequence_output: torch.Tensor) -> torch.Tensor:
prediction_scores = self.predictions(sequence_output)
return prediction_scores
# Adapted from https://github.com/salesforce/BLIP/blob/main/models/med.py#L548
class BlipTextPreTrainedModel(PreTrainedModel):
"""
An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained
models.
"""
config_class = BlipTextConfig
base_model_prefix = "bert"
def _init_weights(self, module):
"""Initialize the weights"""
if isinstance(module, (nn.Linear, nn.Embedding)):
# Slightly different from the TF version which uses truncated_normal for initialization
# cf https://github.com/pytorch/pytorch/pull/5617
module.weight.data.normal_(mean=0.0, std=self.config.initializer_range)
elif isinstance(module, nn.LayerNorm):
module.bias.data.zero_()
module.weight.data.fill_(1.0)
if isinstance(module, nn.Linear) and module.bias is not None:
module.bias.data.zero_()
# Adapted from https://github.com/salesforce/BLIP/blob/3a29b7410476bf5f2ba0955827390eb6ea1f4f9d/models/med.py#L571
class BlipTextModel(BlipTextPreTrainedModel):
"""
The model can behave as an encoder (with only self-attention) as well as a decoder, in which case a layer of
cross-attention is added between the self-attention layers, following the architecture described in [Attention is
all you need](https://arxiv.org/abs/1706.03762) by Ashish Vaswani, Noam Shazeer, Niki Parmar, Jakob Uszkoreit,
Llion Jones, Aidan N. Gomez, Lukasz Kaiser and Illia Polosukhin. argument and `is_decoder` set to `True`; an
`encoder_hidden_states` is then expected as an input to the forward pass.
"""
def __init__(self, config, add_pooling_layer=True):
super().__init__(config)
self.config = config
self.embeddings = BlipTextEmbeddings(config)
self.encoder = BlipTextEncoder(config)
self.pooler = BlipTextPooler(config) if add_pooling_layer else None
self.post_init()
def get_input_embeddings(self):
return self.embeddings.word_embeddings
def set_input_embeddings(self, value):
self.embeddings.word_embeddings = value
# Copied from transformers.models.bert.modeling_bert.BertModel._prune_heads
def _prune_heads(self, heads_to_prune):
"""
Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base
class PreTrainedModel
"""
for layer, heads in heads_to_prune.items():
self.encoder.layer[layer].attention.prune_heads(heads)
def get_extended_attention_mask(
self, attention_mask: Tensor, input_shape: Tuple[int], device: device, is_decoder: bool
) -> Tensor:
"""
Makes broadcastable attention and causal masks so that future and masked tokens are ignored.
Arguments:
attention_mask (`torch.Tensor`):
Mask with ones indicating tokens to attend to, zeros for tokens to ignore.
input_shape (`Tuple[int]`):
The shape of the input to the model.
device (`torch.device`):
The device of the input to the model.
Returns:
`torch.Tensor` The extended attention mask, with a the same dtype as `attention_mask.dtype`.
"""
# We can provide a self-attention mask of dimensions [batch_size, from_seq_length, to_seq_length]
# ourselves in which case we just need to make it broadcastable to all heads.
if attention_mask.dim() == 3:
extended_attention_mask = attention_mask[:, None, :, :]
elif attention_mask.dim() == 2:
# Provided a padding mask of dimensions [batch_size, seq_length]
# - if the model is a decoder, apply a causal mask in addition to the padding mask
# - if the model is an encoder, make the mask broadcastable to [batch_size, num_heads, seq_length, seq_length]
if is_decoder:
batch_size, seq_length = input_shape
seq_ids = torch.arange(seq_length, device=device)
causal_mask = seq_ids[None, None, :].repeat(batch_size, seq_length, 1) <= seq_ids[None, :, None]
# in case past_key_values are used we need to add a prefix ones mask to the causal mask
# causal and attention masks must have same type with pytorch version < 1.3
causal_mask = causal_mask.to(attention_mask.dtype)
if causal_mask.shape[1] < attention_mask.shape[1]:
prefix_seq_len = attention_mask.shape[1] - causal_mask.shape[1]
causal_mask = torch.cat(
[
torch.ones(
(batch_size, seq_length, prefix_seq_len), device=device, dtype=causal_mask.dtype
),
causal_mask,
],
axis=-1,
)
extended_attention_mask = causal_mask[:, None, :, :] * attention_mask[:, None, None, :]
else:
extended_attention_mask = attention_mask[:, None, None, :]
else:
raise ValueError(
"Wrong shape for input_ids (shape {}) or attention_mask (shape {})".format(
input_shape, attention_mask.shape
)
)
# Since attention_mask is 1.0 for positions we want to attend and 0.0 for
# masked positions, this operation will create a tensor which is 0.0 for
# positions we want to attend and -10000.0 for masked positions.
# Since we are adding it to the raw scores before the softmax, this is
# effectively the same as removing these entirely.
extended_attention_mask = extended_attention_mask.to(dtype=self.dtype) # fp16 compatibility
extended_attention_mask = (1.0 - extended_attention_mask) * -10000.0
return extended_attention_mask
def forward(
self,
input_ids: Optional[torch.Tensor] = None,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.Tensor] = None,
head_mask: Optional[torch.Tensor] = None,
inputs_embeds: Optional[torch.Tensor] = None,
encoder_embeds: Optional[torch.Tensor] = None,
encoder_hidden_states: Optional[torch.Tensor] = None,
encoder_attention_mask: Optional[torch.Tensor] = None,
past_key_values: Optional[List[torch.FloatTensor]] = None,
use_cache: Optional[bool] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
is_decoder: Optional[bool] = False,
) -> Union[Tuple[torch.Tensor], BaseModelOutputWithPoolingAndCrossAttentions]:
r"""
encoder_hidden_states (`torch.FloatTensor`, *optional*):
Sequence of hidden-states at the output of the last layer of the encoder. Used in the cross-attention if
the model is configured as a decoder.
encoder_attention_mask (`torch.FloatTensor`, *optional*):
Mask to avoid performing attention on the padding token indices of the encoder input. This mask is used in
the cross-attention if the model is configured as a decoder. Mask values selected in `[0, 1]`:
- 1 for tokens that are **not masked**,
- 0 for tokens that are **masked**.
past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*):
Contains precomputed key and value hidden states of the attention blocks. Can be used to speed up decoding.
If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that
don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all
`decoder_input_ids` of shape `(batch_size, sequence_length)`.
use_cache (`bool`, *optional*):
If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see
`past_key_values`).
"""
output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
output_hidden_states = (
output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
)
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
if is_decoder:
use_cache = use_cache if use_cache is not None else self.config.use_cache
else:
use_cache = False
if input_ids is not None and inputs_embeds is not None:
raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time")
elif input_ids is not None:
self.warn_if_padding_and_no_attention_mask(input_ids, attention_mask)
input_shape = input_ids.size()
batch_size, seq_length = input_shape
device = input_ids.device
elif inputs_embeds is not None:
input_shape = inputs_embeds.size()[:-1]
batch_size, seq_length = input_shape
device = inputs_embeds.device
elif encoder_embeds is not None:
input_shape = encoder_embeds.size()[:-1]
batch_size, seq_length = input_shape
device = encoder_embeds.device
else:
raise ValueError("You have to specify either input_ids or inputs_embeds or encoder_embeds")
# past_key_values_length
past_key_values_length = past_key_values[0][0].shape[2] if past_key_values is not None else 0
if attention_mask is None:
attention_mask = torch.ones(((batch_size, seq_length + past_key_values_length))).to(device)
# We can provide a self-attention mask of dimensions [batch_size, from_seq_length, to_seq_length]
# ourselves in which case we just need to make it broadcastable to all heads.
extended_attention_mask: torch.Tensor = self.get_extended_attention_mask(
attention_mask, input_shape, device, is_decoder
)
# If a 2D or 3D attention mask is provided for the cross-attention
# we need to make broadcastable to [batch_size, num_heads, seq_length, seq_length]
if encoder_hidden_states is not None:
if isinstance(encoder_hidden_states, list):
encoder_batch_size, encoder_sequence_length, _ = encoder_hidden_states[0].size()
else:
encoder_batch_size, encoder_sequence_length, _ = encoder_hidden_states.size()
encoder_hidden_shape = (encoder_batch_size, encoder_sequence_length)
if isinstance(encoder_attention_mask, list):
encoder_extended_attention_mask = [self.invert_attention_mask(mask) for mask in encoder_attention_mask]
elif encoder_attention_mask is None:
encoder_attention_mask = torch.ones(encoder_hidden_shape, device=device)
encoder_extended_attention_mask = self.invert_attention_mask(encoder_attention_mask)
else:
encoder_extended_attention_mask = self.invert_attention_mask(encoder_attention_mask)
else:
encoder_extended_attention_mask = None
# Prepare head mask if needed
# 1.0 in head_mask indicate we keep the head
# attention_probs has shape bsz x n_heads x N x N
# input head_mask has shape [num_heads] or [num_hidden_layers x num_heads]
# and head_mask is converted to shape [num_hidden_layers x batch x num_heads x seq_length x seq_length]
head_mask = self.get_head_mask(head_mask, self.config.num_hidden_layers)
if encoder_embeds is None:
embedding_output = self.embeddings(
input_ids=input_ids,
position_ids=position_ids,
inputs_embeds=inputs_embeds,
past_key_values_length=past_key_values_length,
)
else:
embedding_output = encoder_embeds
encoder_outputs = self.encoder(
embedding_output,
attention_mask=extended_attention_mask,
head_mask=head_mask,
encoder_hidden_states=encoder_hidden_states,
encoder_attention_mask=encoder_extended_attention_mask,
past_key_values=past_key_values,
use_cache=use_cache,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
)
sequence_output = encoder_outputs[0]
pooled_output = self.pooler(sequence_output) if self.pooler is not None else None
if not return_dict:
return (sequence_output, pooled_output) + encoder_outputs[1:]
return BaseModelOutputWithPoolingAndCrossAttentions(
last_hidden_state=sequence_output,
pooler_output=pooled_output,
past_key_values=encoder_outputs.past_key_values,
hidden_states=encoder_outputs.hidden_states,
attentions=encoder_outputs.attentions,
cross_attentions=encoder_outputs.cross_attentions,
)
# Adapted from https://github.com/salesforce/BLIP/blob/main/models/med.py#L811
class BlipTextLMHeadModel(BlipTextPreTrainedModel):
def __init__(self, config):
super().__init__(config)
self.bert = BlipTextModel(config, add_pooling_layer=False)
self.cls = BlipTextOnlyMLMHead(config)
self.label_smoothing = config.label_smoothing
def get_output_embeddings(self):
return self.cls.predictions.decoder
def set_output_embeddings(self, new_embeddings):
self.cls.predictions.decoder = new_embeddings
def forward(
self,
input_ids: Optional[torch.Tensor] = None,
attention_mask: Optional[torch.Tensor] = None,
position_ids: Optional[torch.Tensor] = None,
head_mask: Optional[torch.Tensor] = None,
inputs_embeds: Optional[torch.Tensor] = None,
encoder_hidden_states: Optional[torch.Tensor] = None,
encoder_attention_mask: Optional[torch.Tensor] = None,
labels: Optional[torch.Tensor] = None,
past_key_values: Optional[List[torch.Tensor]] = None,
use_cache: Optional[bool] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
return_logits: Optional[bool] = False,
is_decoder: Optional[bool] = True,
reduction: Optional[str] = "mean",
) -> Union[Tuple[torch.Tensor], CausalLMOutputWithCrossAttentions]:
r"""
encoder_hidden_states (`torch.FloatTensor`, *optional*): Sequence of
hidden-states at the output of the last layer of the encoder. Used in the cross-attention if the model is
configured as a decoder.
encoder_attention_mask (`torch.FloatTensor`, *optional*):
Mask to avoid performing attention on the padding token indices of the encoder input. This mask is used in
the cross-attention if the model is configured as a decoder. Mask values selected in `[0, 1]`:
- 1 for tokens that are **not masked**,
- 0 for tokens that are **masked**.
labels (`torch.LongTensor`, *optional*):
Labels for computing the left-to-right language modeling loss (next word prediction). Indices should be in
`[-100, 0, ..., config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are
ignored (masked), the loss is only computed for the tokens with labels n `[0, ..., config.vocab_size]`
past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*):
Contains precomputed key and value hidden states of the attention blocks. Can be used to speed up decoding.
If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that
don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all
`decoder_input_ids` of shape `(batch_size, sequence_length)`.
use_cache (`bool`, *optional*):
If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see
`past_key_values`).
"""
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
if labels is not None:
use_cache = False
outputs = self.bert(
input_ids,
attention_mask=attention_mask,
position_ids=position_ids,
head_mask=head_mask,
inputs_embeds=inputs_embeds,
encoder_hidden_states=encoder_hidden_states,
encoder_attention_mask=encoder_attention_mask,
past_key_values=past_key_values,
use_cache=use_cache,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
is_decoder=is_decoder,
)
sequence_output = outputs[0]
prediction_scores = self.cls(sequence_output)
if return_logits:
return prediction_scores[:, :-1, :].contiguous()
lm_loss = None
if labels is not None:
# we are doing next-token prediction; shift prediction scores and input ids by one
shifted_prediction_scores = prediction_scores[:, :-1, :].contiguous()
labels = labels[:, 1:].contiguous().to(shifted_prediction_scores.device)
loss_fct = CrossEntropyLoss(reduction=reduction, label_smoothing=self.label_smoothing)
lm_loss = loss_fct(shifted_prediction_scores.view(-1, self.config.vocab_size), labels.view(-1))
if reduction == "none":
lm_loss = lm_loss.view(prediction_scores.size(0), -1).sum(1)
if not return_dict:
output = (prediction_scores,) + outputs[2:]
return ((lm_loss,) + output) if lm_loss is not None else output
return CausalLMOutputWithCrossAttentions(
loss=lm_loss,
logits=prediction_scores,
past_key_values=outputs.past_key_values,
hidden_states=outputs.hidden_states,
attentions=outputs.attentions,
cross_attentions=outputs.cross_attentions,
)
def prepare_inputs_for_generation(self, input_ids, past_key_values=None, attention_mask=None, **model_kwargs):
input_shape = input_ids.shape
# if model is used as a decoder in encoder-decoder model, the decoder attention mask is created on the fly
if attention_mask is None:
attention_mask = input_ids.new_ones(input_shape)
# cut decoder_input_ids if past_key_values is used
if past_key_values is not None:
past_length = past_key_values[0][0].shape[2]
# Some generation methods already pass only the last input ID
if input_ids.shape[1] > past_length:
remove_prefix_length = past_length
else:
# Default to old behavior: keep only final ID
remove_prefix_length = input_ids.shape[1] - 1
input_ids = input_ids[:, remove_prefix_length:]
return {
"input_ids": input_ids,
"attention_mask": attention_mask,
"past_key_values": past_key_values,
"encoder_hidden_states": model_kwargs.get("encoder_hidden_states", None),
"encoder_attention_mask": model_kwargs.get("encoder_attention_mask", None),
"is_decoder": True,
}
def _reorder_cache(self, past_key_values, beam_idx):
reordered_past = ()
for layer_past in past_key_values:
reordered_past += (
tuple(past_state.index_select(0, beam_idx.to(past_state.device)) for past_state in layer_past),
)
return reordered_past
| transformers/src/transformers/models/blip/modeling_blip_text.py/0 | {
"file_path": "transformers/src/transformers/models/blip/modeling_blip_text.py",
"repo_id": "transformers",
"token_count": 18734
} | 313 |
# coding=utf-8
# Copyright 2023 The Intel Labs Team Authors, The Microsoft Research Team Authors and HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License=, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing=, software
# distributed under the License is distributed on an "AS IS" BASIS=,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND=, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
""" BridgeTower model configuration"""
import os
from typing import Union
from ...configuration_utils import PretrainedConfig
from ...utils import logging
logger = logging.get_logger(__name__)
BRIDGETOWER_PRETRAINED_CONFIG_ARCHIVE_MAP = {
"BridgeTower/bridgetower-base": "https://huggingface.co/BridgeTower/bridgetower-base/blob/main/config.json",
"BridgeTower/bridgetower-base-itm-mlm": (
"https://huggingface.co/BridgeTower/bridgetower-base-itm-mlm/blob/main/config.json"
),
}
class BridgeTowerVisionConfig(PretrainedConfig):
r"""
This is the configuration class to store the vision configuration of a [`BridgeTowerModel`]. Instantiating a
configuration with the defaults will yield a similar configuration to that of the bridgetower-base
[BridgeTower/bridgetower-base](https://huggingface.co/BridgeTower/bridgetower-base/) architecture.
Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
documentation from [`PretrainedConfig`] for more information.
Args:
hidden_size (`int`, *optional*, defaults to 768):
Dimensionality of the encoder layers and the pooler layer.
num_hidden_layers (`int`, *optional*, defaults to 12):
Number of hidden layers in visual encoder model.
patch_size (`int`, *optional*, defaults to 16):
The size (resolution) of each patch.
image_size (`int`, *optional*, defaults to 288):
The size (resolution) of each image.
initializer_factor (`float`, *optional*, defaults to 1):
A factor for initializing all weight matrices (should be kept to 1, used internally for initialization
testing).
layer_norm_eps (`float`, *optional*, defaults to 1e-05):
The epsilon used by the layer normalization layers.
stop_gradient (`bool`, *optional*, defaults to `False`):
Whether to stop gradient for training.
share_layernorm (`bool`, *optional*, defaults to `True`):
Whether LayerNorm layers are shared.
remove_last_layer (`bool`, *optional*, defaults to `False`):
Whether to remove the last layer from the vision encoder.
Example:
```python
>>> from transformers import BridgeTowerVisionConfig
>>> # Initializing a BridgeTower BridgeTower/bridgetower-base style configuration for the vision model
>>> configuration = BridgeTowerVisionConfig()
>>> # Accessing the configuration
>>> configuration
```"""
model_type = "bridgetower_vision_model"
def __init__(
self,
hidden_size=768,
num_hidden_layers=12,
num_channels=3,
patch_size=16,
image_size=288,
initializer_factor=1,
layer_norm_eps=1e-05,
stop_gradient=False,
share_layernorm=True,
remove_last_layer=False,
**kwargs,
):
super().__init__(**kwargs)
self.hidden_size = hidden_size
self.num_hidden_layers = num_hidden_layers
self.num_channels = num_channels
self.patch_size = patch_size
self.image_size = image_size
self.initializer_factor = initializer_factor
self.layer_norm_eps = layer_norm_eps
self.stop_gradient = stop_gradient
self.share_layernorm = share_layernorm
self.remove_last_layer = remove_last_layer
@classmethod
def from_pretrained(cls, pretrained_model_name_or_path: Union[str, os.PathLike], **kwargs) -> "PretrainedConfig":
config_dict, kwargs = cls.get_config_dict(pretrained_model_name_or_path, **kwargs)
if config_dict.get("model_type") == "bridgetower":
config_dict = config_dict["text_config"]
if "model_type" in config_dict and hasattr(cls, "model_type") and config_dict["model_type"] != cls.model_type:
logger.warning(
f"You are using a model of type {config_dict['model_type']} to instantiate a model of type "
f"{cls.model_type}. This is not supported for all configurations of models and can yield errors."
)
return cls.from_dict(config_dict, **kwargs)
class BridgeTowerTextConfig(PretrainedConfig):
r"""
This is the configuration class to store the text configuration of a [`BridgeTowerModel`]. The default values here
are copied from RoBERTa. Instantiating a configuration with the defaults will yield a similar configuration to that
of the bridgetower-base [BridegTower/bridgetower-base](https://huggingface.co/BridgeTower/bridgetower-base/)
architecture.
Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
documentation from [`PretrainedConfig`] for more information.
Args:
vocab_size (`int`, *optional*, defaults to 50265):
Vocabulary size of the text part of the model. Defines the number of different tokens that can be
represented by the `inputs_ids` passed when calling [`BridgeTowerModel`].
hidden_size (`int`, *optional*, defaults to 768):
Dimensionality of the encoder layers and the pooler layer.
num_hidden_layers (`int`, *optional*, defaults to 12):
Number of hidden layers in the Transformer encoder.
num_attention_heads (`int`, *optional*, defaults to 12):
Number of attention heads for each attention layer in the Transformer encoder.
intermediate_size (`int`, *optional*, defaults to 3072):
Dimensionality of the "intermediate" (often named feed-forward) layer in the Transformer encoder.
hidden_act (`str` or `Callable`, *optional*, defaults to `"gelu"`):
The non-linear activation function (function or string) in the encoder and pooler. If string, `"gelu"`,
`"relu"`, `"silu"` and `"gelu_new"` are supported.
hidden_dropout_prob (`float`, *optional*, defaults to 0.1):
The dropout probability for all fully connected layers in the embeddings, encoder, and pooler.
attention_probs_dropout_prob (`float`, *optional*, defaults to 0.1):
The dropout ratio for the attention probabilities.
max_position_embeddings (`int`, *optional*, defaults to 514):
The maximum sequence length that this model might ever be used with. Typically set this to something large
just in case (e.g., 512 or 1024 or 2048).
type_vocab_size (`int`, *optional*, defaults to 2):
The vocabulary size of the `token_type_ids`.
initializer_factor (`float`, *optional*, defaults to 1):
A factor for initializing all weight matrices (should be kept to 1, used internally for initialization
testing).
layer_norm_eps (`float`, *optional*, defaults to 1e-05):
The epsilon used by the layer normalization layers.
position_embedding_type (`str`, *optional*, defaults to `"absolute"`):
Type of position embedding. Choose one of `"absolute"`, `"relative_key"`, `"relative_key_query"`. For
positional embeddings use `"absolute"`. For more information on `"relative_key"`, please refer to
[Self-Attention with Relative Position Representations (Shaw et al.)](https://arxiv.org/abs/1803.02155).
For more information on `"relative_key_query"`, please refer to *Method 4* in [Improve Transformer Models
with Better Relative Position Embeddings (Huang et al.)](https://arxiv.org/abs/2009.13658).
is_decoder (`bool`, *optional*, defaults to `False`):
Whether the model is used as a decoder or not. If `False`, the model is used as an encoder.
use_cache (`bool`, *optional*, defaults to `True`):
Whether or not the model should return the last key/values attentions (not used by all models). Only
relevant if `config.is_decoder=True`.
Example:
```python
>>> from transformers import BridgeTowerTextConfig
>>> # Initializing a BridgeTower BridgeTower/bridgetower-base style configuration for the text model
>>> configuration = BridgeTowerTextConfig()
>>> # Accessing the configuration
>>> configuration
```"""
model_type = "bridgetower_text_model"
def __init__(
self,
vocab_size=50265,
hidden_size=768,
num_hidden_layers=12,
num_attention_heads=12,
initializer_factor=1,
intermediate_size=3072,
hidden_act="gelu",
hidden_dropout_prob=0.1,
attention_probs_dropout_prob=0.1,
max_position_embeddings=514,
type_vocab_size=1,
layer_norm_eps=1e-05,
pad_token_id=1,
bos_token_id=0,
eos_token_id=2,
position_embedding_type="absolute",
use_cache=True,
**kwargs,
):
super().__init__(**kwargs)
self.vocab_size = vocab_size
self.hidden_size = hidden_size
self.num_hidden_layers = num_hidden_layers
self.num_attention_heads = num_attention_heads
self.hidden_act = hidden_act
self.initializer_factor = initializer_factor
self.intermediate_size = intermediate_size
self.hidden_dropout_prob = hidden_dropout_prob
self.attention_probs_dropout_prob = attention_probs_dropout_prob
self.max_position_embeddings = max_position_embeddings
self.type_vocab_size = type_vocab_size
self.layer_norm_eps = layer_norm_eps
self.position_embedding_type = position_embedding_type
self.use_cache = use_cache
self.pad_token_id = pad_token_id
self.bos_token_id = bos_token_id
self.eos_token_id = eos_token_id
@classmethod
def from_pretrained(cls, pretrained_model_name_or_path: Union[str, os.PathLike], **kwargs) -> "PretrainedConfig":
config_dict, kwargs = cls.get_config_dict(pretrained_model_name_or_path, **kwargs)
if config_dict.get("model_type") == "bridgetower":
config_dict = config_dict["text_config"]
if "model_type" in config_dict and hasattr(cls, "model_type") and config_dict["model_type"] != cls.model_type:
logger.warning(
f"You are using a model of type {config_dict['model_type']} to instantiate a model of type "
f"{cls.model_type}. This is not supported for all configurations of models and can yield errors."
)
return cls.from_dict(config_dict, **kwargs)
class BridgeTowerConfig(PretrainedConfig):
r"""
This is the configuration class to store the configuration of a [`BridgeTowerModel`]. It is used to instantiate a
BridgeTower model according to the specified arguments, defining the model architecture. Instantiating a
configuration with the defaults will yield a similar configuration to that of the bridgetower-base
[BridgeTower/bridgetower-base](https://huggingface.co/BridgeTower/bridgetower-base/) architecture.
Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
documentation from [`PretrainedConfig`] for more information.
Args:
share_cross_modal_transformer_layers (`bool`, *optional*, defaults to `True`):
Whether cross modal transformer layers are shared.
hidden_act (`str` or `function`, *optional*, defaults to `"gelu"`):
The non-linear activation function (function or string) in the encoder and pooler.
hidden_size (`int`, *optional*, defaults to 768):
Dimensionality of the encoder layers and the pooler layer.
initializer_factor (`float`, *optional*, defaults to 1):
A factor for initializing all weight matrices (should be kept to 1, used internally for initialization
testing).
layer_norm_eps (`float`, *optional*, defaults to 1e-05):
The epsilon used by the layer normalization layers.
share_link_tower_layers (`bool`, *optional*, defaults to `False`):
Whether the bride/link tower layers are shared.
link_tower_type (`str`, *optional*, defaults to `"add"`):
Type of the bridge/link layer.
num_attention_heads (`int`, *optional*, defaults to 12):
Number of attention heads for each attention layer in the Transformer encoder.
num_hidden_layers (`int`, *optional*, defaults to 6):
Number of hidden layers in the Transformer encoder.
tie_word_embeddings (`bool`, *optional*, defaults to `False`):
Whether to tie input and output embeddings.
init_layernorm_from_vision_encoder (`bool`, *optional*, defaults to `False`):
Whether to init LayerNorm from the vision encoder.
text_config (`dict`, *optional*):
Dictionary of configuration options used to initialize [`BridgeTowerTextConfig`].
vision_config (`dict`, *optional*):
Dictionary of configuration options used to initialize [`BridgeTowerVisionConfig`].
Example:
```python
>>> from transformers import BridgeTowerModel, BridgeTowerConfig
>>> # Initializing a BridgeTower BridgeTower/bridgetower-base style configuration
>>> configuration = BridgeTowerConfig()
>>> # Initializing a model from the BridgeTower/bridgetower-base style configuration
>>> model = BridgeTowerModel(configuration)
>>> # Accessing the model configuration
>>> configuration = model.config
```"""
model_type = "bridgetower"
def __init__(
self,
share_cross_modal_transformer_layers=True,
hidden_act="gelu",
hidden_size=768,
initializer_factor=1,
layer_norm_eps=1e-05,
share_link_tower_layers=False,
link_tower_type="add",
num_attention_heads=12,
num_hidden_layers=6,
tie_word_embeddings=False,
init_layernorm_from_vision_encoder=False,
text_config=None,
vision_config=None,
**kwargs,
):
# TODO: remove this once the Hub files are updated.
_ = kwargs.pop("text_config_dict", None)
_ = kwargs.pop("vision_config_dict", None)
super().__init__(**kwargs)
self.share_cross_modal_transformer_layers = share_cross_modal_transformer_layers
self.hidden_act = hidden_act
self.hidden_size = hidden_size
self.initializer_factor = initializer_factor
self.layer_norm_eps = layer_norm_eps
self.share_link_tower_layers = share_link_tower_layers
self.link_tower_type = link_tower_type
self.num_attention_heads = num_attention_heads
self.num_hidden_layers = num_hidden_layers
self.tie_word_embeddings = tie_word_embeddings
self.init_layernorm_from_vision_encoder = init_layernorm_from_vision_encoder
if text_config is None:
text_config = {}
logger.info("`text_config` is `None`. Initializing the `BridgeTowerTextConfig` with default values.")
if vision_config is None:
vision_config = {}
logger.info("`vision_config` is `None`. Initializing the `BridgeTowerVisionConfig` with default values.")
self.text_config = BridgeTowerTextConfig(**text_config)
self.vision_config = BridgeTowerVisionConfig(**vision_config)
@classmethod
def from_text_vision_configs(
cls, text_config: BridgeTowerTextConfig, vision_config: BridgeTowerVisionConfig, **kwargs
):
r"""
Instantiate a [`BridgeTowerConfig`] (or a derived class) from BridgeTower text model configuration. Returns:
[`BridgeTowerConfig`]: An instance of a configuration object
"""
return cls(text_config=text_config.to_dict(), vision_config=vision_config.to_dict(), **kwargs)
| transformers/src/transformers/models/bridgetower/configuration_bridgetower.py/0 | {
"file_path": "transformers/src/transformers/models/bridgetower/configuration_bridgetower.py",
"repo_id": "transformers",
"token_count": 6247
} | 314 |
# coding=utf-8
# Copyright 2023 The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import argparse
import re
from laion_clap import CLAP_Module
from transformers import AutoFeatureExtractor, ClapConfig, ClapModel
KEYS_TO_MODIFY_MAPPING = {
"text_branch": "text_model",
"audio_branch": "audio_model.audio_encoder",
"attn": "attention.self",
"self.proj": "output.dense",
"attention.self_mask": "attn_mask",
"mlp.fc1": "intermediate.dense",
"mlp.fc2": "output.dense",
"norm1": "layernorm_before",
"norm2": "layernorm_after",
"bn0": "batch_norm",
}
processor = AutoFeatureExtractor.from_pretrained("laion/clap-htsat-unfused", truncation="rand_trunc")
def init_clap(checkpoint_path, model_type, enable_fusion=False):
model = CLAP_Module(
amodel=model_type,
enable_fusion=enable_fusion,
)
model.load_ckpt(checkpoint_path)
return model
def get_config_from_original(clap_model):
audio_config = {
"patch_embeds_hidden_size": clap_model.model.audio_branch.embed_dim,
"depths": clap_model.model.audio_branch.depths,
"hidden_size": clap_model.model.audio_projection[0].in_features,
}
text_config = {"hidden_size": clap_model.model.text_branch.pooler.dense.in_features}
return ClapConfig(audio_config=audio_config, text_config=text_config)
def rename_state_dict(state_dict):
model_state_dict = {}
sequential_layers_pattern = r".*sequential.(\d+).*"
text_projection_pattern = r".*_projection.(\d+).*"
for key, value in state_dict.items():
# check if any key needs to be modified
for key_to_modify, new_key in KEYS_TO_MODIFY_MAPPING.items():
if key_to_modify in key:
key = key.replace(key_to_modify, new_key)
if re.match(sequential_layers_pattern, key):
# replace sequential layers with list
sequential_layer = re.match(sequential_layers_pattern, key).group(1)
key = key.replace(f"sequential.{sequential_layer}.", f"layers.{int(sequential_layer)//3}.linear.")
elif re.match(text_projection_pattern, key):
projecton_layer = int(re.match(text_projection_pattern, key).group(1))
# Because in CLAP they use `nn.Sequential`...
transformers_projection_layer = 1 if projecton_layer == 0 else 2
key = key.replace(f"_projection.{projecton_layer}.", f"_projection.linear{transformers_projection_layer}.")
if "audio" and "qkv" in key:
# split qkv into query key and value
mixed_qkv = value
qkv_dim = mixed_qkv.size(0) // 3
query_layer = mixed_qkv[:qkv_dim]
key_layer = mixed_qkv[qkv_dim : qkv_dim * 2]
value_layer = mixed_qkv[qkv_dim * 2 :]
model_state_dict[key.replace("qkv", "query")] = query_layer
model_state_dict[key.replace("qkv", "key")] = key_layer
model_state_dict[key.replace("qkv", "value")] = value_layer
else:
model_state_dict[key] = value
return model_state_dict
def convert_clap_checkpoint(checkpoint_path, pytorch_dump_folder_path, config_path, model_type, enable_fusion=False):
clap_model = init_clap(checkpoint_path, model_type, enable_fusion=enable_fusion)
clap_model.eval()
state_dict = clap_model.model.state_dict()
state_dict = rename_state_dict(state_dict)
transformers_config = get_config_from_original(clap_model)
transformers_config.audio_config.enable_fusion = enable_fusion
model = ClapModel(transformers_config)
# ignore the spectrogram embedding layer
model.load_state_dict(state_dict, strict=False)
model.save_pretrained(pytorch_dump_folder_path)
transformers_config.save_pretrained(pytorch_dump_folder_path)
if __name__ == "__main__":
parser = argparse.ArgumentParser()
parser.add_argument("--pytorch_dump_folder_path", default=None, type=str, help="Path to the output PyTorch model.")
parser.add_argument("--checkpoint_path", default=None, type=str, help="Path to fairseq checkpoint")
parser.add_argument("--config_path", default=None, type=str, help="Path to hf config.json of model to convert")
parser.add_argument("--enable_fusion", action="store_true", help="Whether to enable fusion or not")
parser.add_argument("--model_type", default="HTSAT-tiny", type=str, help="Whether to enable fusion or not")
args = parser.parse_args()
convert_clap_checkpoint(
args.checkpoint_path, args.pytorch_dump_folder_path, args.config_path, args.model_type, args.enable_fusion
)
| transformers/src/transformers/models/clap/convert_clap_original_pytorch_to_hf.py/0 | {
"file_path": "transformers/src/transformers/models/clap/convert_clap_original_pytorch_to_hf.py",
"repo_id": "transformers",
"token_count": 2042
} | 315 |
# coding=utf-8
# Copyright 2022 The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
""" CLIPSeg model configuration"""
import os
from typing import Union
from ...configuration_utils import PretrainedConfig
from ...utils import logging
logger = logging.get_logger(__name__)
CLIPSEG_PRETRAINED_CONFIG_ARCHIVE_MAP = {
"CIDAS/clipseg-rd64": "https://huggingface.co/CIDAS/clipseg-rd64/resolve/main/config.json",
}
class CLIPSegTextConfig(PretrainedConfig):
r"""
This is the configuration class to store the configuration of a [`CLIPSegModel`]. It is used to instantiate an
CLIPSeg model according to the specified arguments, defining the model architecture. Instantiating a configuration
with the defaults will yield a similar configuration to that of the CLIPSeg
[CIDAS/clipseg-rd64](https://huggingface.co/CIDAS/clipseg-rd64) architecture.
Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
documentation from [`PretrainedConfig`] for more information.
Args:
vocab_size (`int`, *optional*, defaults to 49408):
Vocabulary size of the CLIPSeg text model. Defines the number of different tokens that can be represented
by the `inputs_ids` passed when calling [`CLIPSegModel`].
hidden_size (`int`, *optional*, defaults to 512):
Dimensionality of the encoder layers and the pooler layer.
intermediate_size (`int`, *optional*, defaults to 2048):
Dimensionality of the "intermediate" (i.e., feed-forward) layer in the Transformer encoder.
num_hidden_layers (`int`, *optional*, defaults to 12):
Number of hidden layers in the Transformer encoder.
num_attention_heads (`int`, *optional*, defaults to 8):
Number of attention heads for each attention layer in the Transformer encoder.
max_position_embeddings (`int`, *optional*, defaults to 77):
The maximum sequence length that this model might ever be used with. Typically set this to something large
just in case (e.g., 512 or 1024 or 2048).
hidden_act (`str` or `function`, *optional*, defaults to `"quick_gelu"`):
The non-linear activation function (function or string) in the encoder and pooler. If string, `"gelu"`,
`"relu"`, `"selu"` and `"gelu_new"` ``"quick_gelu"` are supported.
layer_norm_eps (`float`, *optional*, defaults to 1e-05):
The epsilon used by the layer normalization layers.
attention_dropout (`float`, *optional*, defaults to 0.0):
The dropout ratio for the attention probabilities.
initializer_range (`float`, *optional*, defaults to 0.02):
The standard deviation of the truncated_normal_initializer for initializing all weight matrices.
initializer_factor (`float`, *optional*, defaults to 1.0):
A factor for initializing all weight matrices (should be kept to 1, used internally for initialization
testing).
pad_token_id (`int`, *optional*, defaults to 1):
Padding token id.
bos_token_id (`int`, *optional*, defaults to 49406):
Beginning of stream token id.
eos_token_id (`int`, *optional*, defaults to 49407):
End of stream token id.
Example:
```python
>>> from transformers import CLIPSegTextConfig, CLIPSegTextModel
>>> # Initializing a CLIPSegTextConfig with CIDAS/clipseg-rd64 style configuration
>>> configuration = CLIPSegTextConfig()
>>> # Initializing a CLIPSegTextModel (with random weights) from the CIDAS/clipseg-rd64 style configuration
>>> model = CLIPSegTextModel(configuration)
>>> # Accessing the model configuration
>>> configuration = model.config
```"""
model_type = "clipseg_text_model"
def __init__(
self,
vocab_size=49408,
hidden_size=512,
intermediate_size=2048,
num_hidden_layers=12,
num_attention_heads=8,
max_position_embeddings=77,
hidden_act="quick_gelu",
layer_norm_eps=1e-5,
attention_dropout=0.0,
initializer_range=0.02,
initializer_factor=1.0,
pad_token_id=1,
bos_token_id=49406,
eos_token_id=49407,
**kwargs,
):
super().__init__(pad_token_id=pad_token_id, bos_token_id=bos_token_id, eos_token_id=eos_token_id, **kwargs)
self.vocab_size = vocab_size
self.hidden_size = hidden_size
self.intermediate_size = intermediate_size
self.num_hidden_layers = num_hidden_layers
self.num_attention_heads = num_attention_heads
self.max_position_embeddings = max_position_embeddings
self.layer_norm_eps = layer_norm_eps
self.hidden_act = hidden_act
self.initializer_range = initializer_range
self.initializer_factor = initializer_factor
self.attention_dropout = attention_dropout
@classmethod
def from_pretrained(cls, pretrained_model_name_or_path: Union[str, os.PathLike], **kwargs) -> "PretrainedConfig":
cls._set_token_in_kwargs(kwargs)
config_dict, kwargs = cls.get_config_dict(pretrained_model_name_or_path, **kwargs)
# get the text config dict if we are loading from CLIPSegConfig
if config_dict.get("model_type") == "clipseg":
config_dict = config_dict["text_config"]
if "model_type" in config_dict and hasattr(cls, "model_type") and config_dict["model_type"] != cls.model_type:
logger.warning(
f"You are using a model of type {config_dict['model_type']} to instantiate a model of type "
f"{cls.model_type}. This is not supported for all configurations of models and can yield errors."
)
return cls.from_dict(config_dict, **kwargs)
class CLIPSegVisionConfig(PretrainedConfig):
r"""
This is the configuration class to store the configuration of a [`CLIPSegModel`]. It is used to instantiate an
CLIPSeg model according to the specified arguments, defining the model architecture. Instantiating a configuration
with the defaults will yield a similar configuration to that of the CLIPSeg
[CIDAS/clipseg-rd64](https://huggingface.co/CIDAS/clipseg-rd64) architecture.
Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
documentation from [`PretrainedConfig`] for more information.
Args:
hidden_size (`int`, *optional*, defaults to 768):
Dimensionality of the encoder layers and the pooler layer.
intermediate_size (`int`, *optional*, defaults to 3072):
Dimensionality of the "intermediate" (i.e., feed-forward) layer in the Transformer encoder.
num_hidden_layers (`int`, *optional*, defaults to 12):
Number of hidden layers in the Transformer encoder.
num_attention_heads (`int`, *optional*, defaults to 12):
Number of attention heads for each attention layer in the Transformer encoder.
num_channels (`int`, *optional*, defaults to 3):
The number of input channels.
image_size (`int`, *optional*, defaults to 224):
The size (resolution) of each image.
patch_size (`int`, *optional*, defaults to 32):
The size (resolution) of each patch.
hidden_act (`str` or `function`, *optional*, defaults to `"quick_gelu"`):
The non-linear activation function (function or string) in the encoder and pooler. If string, `"gelu"`,
`"relu"`, `"selu"` and `"gelu_new"` ``"quick_gelu"` are supported.
layer_norm_eps (`float`, *optional*, defaults to 1e-05):
The epsilon used by the layer normalization layers.
attention_dropout (`float`, *optional*, defaults to 0.0):
The dropout ratio for the attention probabilities.
initializer_range (`float`, *optional*, defaults to 0.02):
The standard deviation of the truncated_normal_initializer for initializing all weight matrices.
initializer_factor (`float`, *optional*, defaults to 1.0):
A factor for initializing all weight matrices (should be kept to 1, used internally for initialization
testing).
Example:
```python
>>> from transformers import CLIPSegVisionConfig, CLIPSegVisionModel
>>> # Initializing a CLIPSegVisionConfig with CIDAS/clipseg-rd64 style configuration
>>> configuration = CLIPSegVisionConfig()
>>> # Initializing a CLIPSegVisionModel (with random weights) from the CIDAS/clipseg-rd64 style configuration
>>> model = CLIPSegVisionModel(configuration)
>>> # Accessing the model configuration
>>> configuration = model.config
```"""
model_type = "clipseg_vision_model"
def __init__(
self,
hidden_size=768,
intermediate_size=3072,
num_hidden_layers=12,
num_attention_heads=12,
num_channels=3,
image_size=224,
patch_size=32,
hidden_act="quick_gelu",
layer_norm_eps=1e-5,
attention_dropout=0.0,
initializer_range=0.02,
initializer_factor=1.0,
**kwargs,
):
super().__init__(**kwargs)
self.hidden_size = hidden_size
self.intermediate_size = intermediate_size
self.num_hidden_layers = num_hidden_layers
self.num_attention_heads = num_attention_heads
self.num_channels = num_channels
self.patch_size = patch_size
self.image_size = image_size
self.initializer_range = initializer_range
self.initializer_factor = initializer_factor
self.attention_dropout = attention_dropout
self.layer_norm_eps = layer_norm_eps
self.hidden_act = hidden_act
@classmethod
def from_pretrained(cls, pretrained_model_name_or_path: Union[str, os.PathLike], **kwargs) -> "PretrainedConfig":
cls._set_token_in_kwargs(kwargs)
config_dict, kwargs = cls.get_config_dict(pretrained_model_name_or_path, **kwargs)
# get the vision config dict if we are loading from CLIPSegConfig
if config_dict.get("model_type") == "clipseg":
config_dict = config_dict["vision_config"]
if "model_type" in config_dict and hasattr(cls, "model_type") and config_dict["model_type"] != cls.model_type:
logger.warning(
f"You are using a model of type {config_dict['model_type']} to instantiate a model of type "
f"{cls.model_type}. This is not supported for all configurations of models and can yield errors."
)
return cls.from_dict(config_dict, **kwargs)
class CLIPSegConfig(PretrainedConfig):
r"""
[`CLIPSegConfig`] is the configuration class to store the configuration of a [`CLIPSegModel`]. It is used to
instantiate a CLIPSeg model according to the specified arguments, defining the text model and vision model configs.
Instantiating a configuration with the defaults will yield a similar configuration to that of the CLIPSeg
[CIDAS/clipseg-rd64](https://huggingface.co/CIDAS/clipseg-rd64) architecture.
Configuration objects inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the
documentation from [`PretrainedConfig`] for more information.
Args:
text_config (`dict`, *optional*):
Dictionary of configuration options used to initialize [`CLIPSegTextConfig`].
vision_config (`dict`, *optional*):
Dictionary of configuration options used to initialize [`CLIPSegVisionConfig`].
projection_dim (`int`, *optional*, defaults to 512):
Dimensionality of text and vision projection layers.
logit_scale_init_value (`float`, *optional*, defaults to 2.6592):
The inital value of the *logit_scale* paramter. Default is used as per the original CLIPSeg implementation.
extract_layers (`List[int]`, *optional*, defaults to `[3, 6, 9]`):
Layers to extract when forwarding the query image through the frozen visual backbone of CLIP.
reduce_dim (`int`, *optional*, defaults to 64):
Dimensionality to reduce the CLIP vision embedding.
decoder_num_attention_heads (`int`, *optional*, defaults to 4):
Number of attention heads in the decoder of CLIPSeg.
decoder_attention_dropout (`float`, *optional*, defaults to 0.0):
The dropout ratio for the attention probabilities.
decoder_hidden_act (`str` or `function`, *optional*, defaults to `"quick_gelu"`):
The non-linear activation function (function or string) in the encoder and pooler. If string, `"gelu"`,
`"relu"`, `"selu"` and `"gelu_new"` ``"quick_gelu"` are supported.
decoder_intermediate_size (`int`, *optional*, defaults to 2048):
Dimensionality of the "intermediate" (i.e., feed-forward) layers in the Transformer decoder.
conditional_layer (`int`, *optional*, defaults to 0):
The layer to use of the Transformer encoder whose activations will be combined with the condition
embeddings using FiLM (Feature-wise Linear Modulation). If 0, the last layer is used.
use_complex_transposed_convolution (`bool`, *optional*, defaults to `False`):
Whether to use a more complex transposed convolution in the decoder, enabling more fine-grained
segmentation.
kwargs (*optional*):
Dictionary of keyword arguments.
Example:
```python
>>> from transformers import CLIPSegConfig, CLIPSegModel
>>> # Initializing a CLIPSegConfig with CIDAS/clipseg-rd64 style configuration
>>> configuration = CLIPSegConfig()
>>> # Initializing a CLIPSegModel (with random weights) from the CIDAS/clipseg-rd64 style configuration
>>> model = CLIPSegModel(configuration)
>>> # Accessing the model configuration
>>> configuration = model.config
>>> # We can also initialize a CLIPSegConfig from a CLIPSegTextConfig and a CLIPSegVisionConfig
>>> # Initializing a CLIPSegText and CLIPSegVision configuration
>>> config_text = CLIPSegTextConfig()
>>> config_vision = CLIPSegVisionConfig()
>>> config = CLIPSegConfig.from_text_vision_configs(config_text, config_vision)
```"""
model_type = "clipseg"
def __init__(
self,
text_config=None,
vision_config=None,
projection_dim=512,
logit_scale_init_value=2.6592,
extract_layers=[3, 6, 9],
reduce_dim=64,
decoder_num_attention_heads=4,
decoder_attention_dropout=0.0,
decoder_hidden_act="quick_gelu",
decoder_intermediate_size=2048,
conditional_layer=0,
use_complex_transposed_convolution=False,
**kwargs,
):
# If `_config_dict` exist, we use them for the backward compatibility.
# We pop out these 2 attributes before calling `super().__init__` to avoid them being saved (which causes a lot
# of confusion!).
text_config_dict = kwargs.pop("text_config_dict", None)
vision_config_dict = kwargs.pop("vision_config_dict", None)
super().__init__(**kwargs)
# Instead of simply assigning `[text|vision]_config_dict` to `[text|vision]_config`, we use the values in
# `[text|vision]_config_dict` to update the values in `[text|vision]_config`. The values should be same in most
# cases, but we don't want to break anything regarding `_config_dict` that existed before commit `8827e1b2`.
if text_config_dict is not None:
if text_config is None:
text_config = {}
# This is the complete result when using `text_config_dict`.
_text_config_dict = CLIPSegTextConfig(**text_config_dict).to_dict()
# Give a warning if the values exist in both `_text_config_dict` and `text_config` but being different.
for key, value in _text_config_dict.items():
if key in text_config and value != text_config[key] and key not in ["transformers_version"]:
# If specified in `text_config_dict`
if key in text_config_dict:
message = (
f"`{key}` is found in both `text_config_dict` and `text_config` but with different values. "
f'The value `text_config_dict["{key}"]` will be used instead.'
)
# If inferred from default argument values (just to be super careful)
else:
message = (
f"`text_config_dict` is provided which will be used to initialize `CLIPSegTextConfig`. The "
f'value `text_config["{key}"]` will be overriden.'
)
logger.info(message)
# Update all values in `text_config` with the ones in `_text_config_dict`.
text_config.update(_text_config_dict)
if vision_config_dict is not None:
if vision_config is None:
vision_config = {}
# This is the complete result when using `vision_config_dict`.
_vision_config_dict = CLIPSegVisionConfig(**vision_config_dict).to_dict()
# convert keys to string instead of integer
if "id2label" in _vision_config_dict:
_vision_config_dict["id2label"] = {
str(key): value for key, value in _vision_config_dict["id2label"].items()
}
# Give a warning if the values exist in both `_vision_config_dict` and `vision_config` but being different.
for key, value in _vision_config_dict.items():
if key in vision_config and value != vision_config[key] and key not in ["transformers_version"]:
# If specified in `vision_config_dict`
if key in vision_config_dict:
message = (
f"`{key}` is found in both `vision_config_dict` and `vision_config` but with different "
f'values. The value `vision_config_dict["{key}"]` will be used instead.'
)
# If inferred from default argument values (just to be super careful)
else:
message = (
f"`vision_config_dict` is provided which will be used to initialize `CLIPSegVisionConfig`. "
f'The value `vision_config["{key}"]` will be overriden.'
)
logger.info(message)
# Update all values in `vision_config` with the ones in `_vision_config_dict`.
vision_config.update(_vision_config_dict)
if text_config is None:
text_config = {}
logger.info("`text_config` is `None`. Initializing the `CLIPSegTextConfig` with default values.")
if vision_config is None:
vision_config = {}
logger.info("`vision_config` is `None`. initializing the `CLIPSegVisionConfig` with default values.")
self.text_config = CLIPSegTextConfig(**text_config)
self.vision_config = CLIPSegVisionConfig(**vision_config)
self.projection_dim = projection_dim
self.logit_scale_init_value = logit_scale_init_value
self.extract_layers = extract_layers
self.reduce_dim = reduce_dim
self.decoder_num_attention_heads = decoder_num_attention_heads
self.decoder_attention_dropout = decoder_attention_dropout
self.decoder_hidden_act = decoder_hidden_act
self.decoder_intermediate_size = decoder_intermediate_size
self.conditional_layer = conditional_layer
self.initializer_factor = 1.0
self.use_complex_transposed_convolution = use_complex_transposed_convolution
@classmethod
def from_text_vision_configs(cls, text_config: CLIPSegTextConfig, vision_config: CLIPSegVisionConfig, **kwargs):
r"""
Instantiate a [`CLIPSegConfig`] (or a derived class) from clipseg text model configuration and clipseg vision
model configuration.
Returns:
[`CLIPSegConfig`]: An instance of a configuration object
"""
return cls(text_config=text_config.to_dict(), vision_config=vision_config.to_dict(), **kwargs)
| transformers/src/transformers/models/clipseg/configuration_clipseg.py/0 | {
"file_path": "transformers/src/transformers/models/clipseg/configuration_clipseg.py",
"repo_id": "transformers",
"token_count": 8277
} | 316 |
# coding=utf-8
# Copyright 2022 Salesforce authors, The EleutherAI, and HuggingFace Teams. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
""" CodeGen model configuration"""
from collections import OrderedDict
from typing import Any, List, Mapping, Optional
from ... import PreTrainedTokenizer, TensorType, is_torch_available
from ...configuration_utils import PretrainedConfig
from ...onnx import OnnxConfigWithPast, PatchingSpec
from ...utils import logging
logger = logging.get_logger(__name__)
CODEGEN_PRETRAINED_CONFIG_ARCHIVE_MAP = {
"Salesforce/codegen-350M-nl": "https://huggingface.co/Salesforce/codegen-350M-nl/resolve/main/config.json",
"Salesforce/codegen-350M-multi": "https://huggingface.co/Salesforce/codegen-350M-multi/resolve/main/config.json",
"Salesforce/codegen-350M-mono": "https://huggingface.co/Salesforce/codegen-350M-mono/resolve/main/config.json",
"Salesforce/codegen-2B-nl": "https://huggingface.co/Salesforce/codegen-2B-nl/resolve/main/config.json",
"Salesforce/codegen-2B-multi": "https://huggingface.co/Salesforce/codegen-2B-multi/resolve/main/config.json",
"Salesforce/codegen-2B-mono": "https://huggingface.co/Salesforce/codegen-2B-mono/resolve/main/config.json",
"Salesforce/codegen-6B-nl": "https://huggingface.co/Salesforce/codegen-6B-nl/resolve/main/config.json",
"Salesforce/codegen-6B-multi": "https://huggingface.co/Salesforce/codegen-6B-multi/resolve/main/config.json",
"Salesforce/codegen-6B-mono": "https://huggingface.co/Salesforce/codegen-6B-mono/resolve/main/config.json",
"Salesforce/codegen-16B-nl": "https://huggingface.co/Salesforce/codegen-16B-nl/resolve/main/config.json",
"Salesforce/codegen-16B-multi": "https://huggingface.co/Salesforce/codegen-16B-multi/resolve/main/config.json",
"Salesforce/codegen-16B-mono": "https://huggingface.co/Salesforce/codegen-16B-mono/resolve/main/config.json",
}
class CodeGenConfig(PretrainedConfig):
r"""
This is the configuration class to store the configuration of a [`CodeGenModel`]. It is used to instantiate a
CodeGen model according to the specified arguments, defining the model architecture. Instantiating a configuration
with the defaults will yield a similar configuration to that of the CodeGen
[Salesforce/codegen-2B-mono](https://huggingface.co/Salesforce/codegen-2B-mono) architecture. Configuration objects
inherit from [`PretrainedConfig`] and can be used to control the model outputs. Read the documentation from
[`PretrainedConfig`] for more information.
Args:
vocab_size (`int`, *optional*, defaults to 50400):
Vocabulary size of the CodeGen model. Defines the number of different tokens that can be represented by the
`inputs_ids` passed when calling [`CodeGenModel`].
n_positions (`int`, *optional*, defaults to 2048):
The maximum sequence length that this model might ever be used with. Typically set this to something large
just in case (e.g., 512 or 1024 or 2048).
n_ctx (`int`, *optional*, defaults to 2048):
This attribute is used in `CodeGenModel.__init__` without any real effect.
n_embd (`int`, *optional*, defaults to 4096):
Dimensionality of the embeddings and hidden states.
n_layer (`int`, *optional*, defaults to 28):
Number of hidden layers in the Transformer encoder.
n_head (`int`, *optional*, defaults to 16):
Number of attention heads for each attention layer in the Transformer encoder.
rotary_dim (`int`, *optional*, defaults to 64):
Number of dimensions in the embedding that Rotary Position Embedding is applied to.
n_inner (`int`, *optional*):
Dimensionality of the inner feed-forward layers. `None` will set it to 4 times n_embd
activation_function (`str`, *optional*, defaults to `"gelu_new"`):
Activation function, to be selected in the list `["relu", "silu", "gelu", "tanh", "gelu_new"]`.
resid_pdrop (`float`, *optional*, defaults to 0.0):
The dropout probability for all fully connected layers in the embeddings, encoder, and pooler.
embd_pdrop (`int`, *optional*, defaults to 0.0):
The dropout ratio for the embeddings.
attn_pdrop (`float`, *optional*, defaults to 0.0):
The dropout ratio for the attention.
layer_norm_epsilon (`float`, *optional*, defaults to 1e-05):
The epsilon to use in the layer normalization layers.
initializer_range (`float`, *optional*, defaults to 0.02):
The standard deviation of the truncated_normal_initializer for initializing all weight matrices.
use_cache (`bool`, *optional*, defaults to `True`):
Whether or not the model should return the last key/values attentions (not used by all models).
bos_token_id (`int`, *optional*, defaults to 50256):
Beginning of stream token id.
eos_token_id (`int`, *optional*, defaults to 50256):
End of stream token id.
tie_word_embeddings (`bool`, *optional*, defaults to `False`):
Whether the model's input and output word embeddings should be tied. Note that this is only relevant if the
model has a output word embedding layer.
Example:
```python
>>> from transformers import CodeGenConfig, CodeGenModel
>>> # Initializing a CodeGen 6B configuration
>>> configuration = CodeGenConfig()
>>> # Initializing a model (with random weights) from the configuration
>>> model = CodeGenModel(configuration)
>>> # Accessing the model configuration
>>> configuration = model.config
```"""
model_type = "codegen"
attribute_map = {
"max_position_embeddings": "n_positions",
"hidden_size": "n_embd",
"num_attention_heads": "n_head",
"num_hidden_layers": "n_layer",
}
def __init__(
self,
vocab_size=50400,
n_positions=2048,
n_ctx=2048,
n_embd=4096,
n_layer=28,
n_head=16,
rotary_dim=64,
n_inner=None,
activation_function="gelu_new",
resid_pdrop=0.0,
embd_pdrop=0.0,
attn_pdrop=0.0,
layer_norm_epsilon=1e-5,
initializer_range=0.02,
use_cache=True,
bos_token_id=50256,
eos_token_id=50256,
tie_word_embeddings=False,
**kwargs,
):
self.vocab_size = vocab_size
self.n_ctx = n_ctx
self.n_positions = n_positions
self.n_embd = n_embd
self.n_layer = n_layer
self.n_head = n_head
self.n_inner = n_inner
self.rotary_dim = rotary_dim
self.activation_function = activation_function
self.resid_pdrop = resid_pdrop
self.embd_pdrop = embd_pdrop
self.attn_pdrop = attn_pdrop
self.layer_norm_epsilon = layer_norm_epsilon
self.initializer_range = initializer_range
self.use_cache = use_cache
self.bos_token_id = bos_token_id
self.eos_token_id = eos_token_id
super().__init__(
bos_token_id=bos_token_id, eos_token_id=eos_token_id, tie_word_embeddings=tie_word_embeddings, **kwargs
)
# Copied from transformers.models.gpt2.configuration_gpt2.GPT2OnnxConfig
class CodeGenOnnxConfig(OnnxConfigWithPast):
def __init__(
self,
config: PretrainedConfig,
task: str = "default",
patching_specs: List[PatchingSpec] = None,
use_past: bool = False,
):
super().__init__(config, task=task, patching_specs=patching_specs, use_past=use_past)
if not getattr(self._config, "pad_token_id", None):
# TODO: how to do that better?
self._config.pad_token_id = 0
@property
def inputs(self) -> Mapping[str, Mapping[int, str]]:
common_inputs = OrderedDict({"input_ids": {0: "batch", 1: "sequence"}})
if self.use_past:
self.fill_with_past_key_values_(common_inputs, direction="inputs")
common_inputs["attention_mask"] = {0: "batch", 1: "past_sequence + sequence"}
else:
common_inputs["attention_mask"] = {0: "batch", 1: "sequence"}
return common_inputs
@property
def num_layers(self) -> int:
return self._config.n_layer
@property
def num_attention_heads(self) -> int:
return self._config.n_head
def generate_dummy_inputs(
self,
tokenizer: PreTrainedTokenizer,
batch_size: int = -1,
seq_length: int = -1,
is_pair: bool = False,
framework: Optional[TensorType] = None,
) -> Mapping[str, Any]:
common_inputs = super(OnnxConfigWithPast, self).generate_dummy_inputs(
tokenizer, batch_size=batch_size, seq_length=seq_length, is_pair=is_pair, framework=framework
)
# We need to order the input in the way they appears in the forward()
ordered_inputs = OrderedDict({"input_ids": common_inputs["input_ids"]})
# Need to add the past_keys
if self.use_past:
if not is_torch_available():
raise ValueError("Cannot generate dummy past_keys inputs without PyTorch installed.")
else:
import torch
batch, seqlen = common_inputs["input_ids"].shape
# Not using the same length for past_key_values
past_key_values_length = seqlen + 2
past_shape = (
batch,
self.num_attention_heads,
past_key_values_length,
self._config.hidden_size // self.num_attention_heads,
)
ordered_inputs["past_key_values"] = [
(torch.zeros(past_shape), torch.zeros(past_shape)) for _ in range(self.num_layers)
]
ordered_inputs["attention_mask"] = common_inputs["attention_mask"]
if self.use_past:
mask_dtype = ordered_inputs["attention_mask"].dtype
ordered_inputs["attention_mask"] = torch.cat(
[ordered_inputs["attention_mask"], torch.ones(batch, past_key_values_length, dtype=mask_dtype)], dim=1
)
return ordered_inputs
@property
def default_onnx_opset(self) -> int:
return 13
| transformers/src/transformers/models/codegen/configuration_codegen.py/0 | {
"file_path": "transformers/src/transformers/models/codegen/configuration_codegen.py",
"repo_id": "transformers",
"token_count": 4500
} | 317 |
# coding=utf-8
# Copyright 2020 The HuggingFace Inc. team.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Convert ConvBERT checkpoint."""
import argparse
from transformers import ConvBertConfig, ConvBertModel, TFConvBertModel, load_tf_weights_in_convbert
from transformers.utils import logging
logging.set_verbosity_info()
def convert_orig_tf1_checkpoint_to_pytorch(tf_checkpoint_path, convbert_config_file, pytorch_dump_path):
conf = ConvBertConfig.from_json_file(convbert_config_file)
model = ConvBertModel(conf)
model = load_tf_weights_in_convbert(model, conf, tf_checkpoint_path)
model.save_pretrained(pytorch_dump_path)
tf_model = TFConvBertModel.from_pretrained(pytorch_dump_path, from_pt=True)
tf_model.save_pretrained(pytorch_dump_path)
if __name__ == "__main__":
parser = argparse.ArgumentParser()
# Required parameters
parser.add_argument(
"--tf_checkpoint_path", default=None, type=str, required=True, help="Path to the TensorFlow checkpoint path."
)
parser.add_argument(
"--convbert_config_file",
default=None,
type=str,
required=True,
help=(
"The config json file corresponding to the pre-trained ConvBERT model. \n"
"This specifies the model architecture."
),
)
parser.add_argument(
"--pytorch_dump_path", default=None, type=str, required=True, help="Path to the output PyTorch model."
)
args = parser.parse_args()
convert_orig_tf1_checkpoint_to_pytorch(args.tf_checkpoint_path, args.convbert_config_file, args.pytorch_dump_path)
| transformers/src/transformers/models/convbert/convert_convbert_original_tf1_checkpoint_to_pytorch_and_tf2.py/0 | {
"file_path": "transformers/src/transformers/models/convbert/convert_convbert_original_tf1_checkpoint_to_pytorch_and_tf2.py",
"repo_id": "transformers",
"token_count": 749
} | 318 |
# coding=utf-8
# Copyright 2023 Meta Platforms Inc. and The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
""" TF 2.0 ConvNextV2 model."""
from __future__ import annotations
from typing import List, Optional, Tuple, Union
import numpy as np
import tensorflow as tf
from ...activations_tf import get_tf_activation
from ...modeling_tf_outputs import (
TFBaseModelOutputWithNoAttention,
TFBaseModelOutputWithPooling,
TFBaseModelOutputWithPoolingAndNoAttention,
TFImageClassifierOutputWithNoAttention,
)
from ...modeling_tf_utils import (
TFModelInputType,
TFPreTrainedModel,
TFSequenceClassificationLoss,
get_initializer,
keras,
keras_serializable,
unpack_inputs,
)
from ...tf_utils import shape_list
from ...utils import (
add_code_sample_docstrings,
add_start_docstrings,
add_start_docstrings_to_model_forward,
logging,
)
from .configuration_convnextv2 import ConvNextV2Config
logger = logging.get_logger(__name__)
# General docstring
_CONFIG_FOR_DOC = "ConvNextV2Config"
# Base docstring
_CHECKPOINT_FOR_DOC = "facebook/convnextv2-tiny-1k-224"
_EXPECTED_OUTPUT_SHAPE = [1, 768, 7, 7]
# Image classification docstring
_IMAGE_CLASS_CHECKPOINT = "facebook/convnextv2-tiny-1k-224"
_IMAGE_CLASS_EXPECTED_OUTPUT = "tabby, tabby cat"
CONVNEXTV2_PRETRAINED_MODEL_ARCHIVE_LIST = [
"facebook/convnextv2-tiny-1k-224",
# See all ConvNextV2 models at https://huggingface.co/models?filter=convnextv2
]
# Copied from transformers.models.convnext.modeling_tf_convnext.TFConvNextDropPath with ConvNext->ConvNextV2
class TFConvNextV2DropPath(keras.layers.Layer):
"""Drop paths (Stochastic Depth) per sample (when applied in main path of residual blocks).
References:
(1) github.com:rwightman/pytorch-image-models
"""
def __init__(self, drop_path: float, **kwargs):
super().__init__(**kwargs)
self.drop_path = drop_path
def call(self, x: tf.Tensor, training=None):
if training:
keep_prob = 1 - self.drop_path
shape = (tf.shape(x)[0],) + (1,) * (len(tf.shape(x)) - 1)
random_tensor = keep_prob + tf.random.uniform(shape, 0, 1)
random_tensor = tf.floor(random_tensor)
return (x / keep_prob) * random_tensor
return x
class TFConvNextV2GRN(keras.layers.Layer):
"""GRN (Global Response Normalization) layer"""
def __init__(self, config: ConvNextV2Config, dim: int, **kwargs):
super().__init__(**kwargs)
self.dim = dim
def build(self, input_shape: tf.TensorShape = None):
# PT's `nn.Parameters` must be mapped to a TF layer weight to inherit the same name hierarchy (and vice-versa)
self.weight = self.add_weight(
name="weight",
shape=(1, 1, 1, self.dim),
initializer=keras.initializers.Zeros(),
)
self.bias = self.add_weight(
name="bias",
shape=(1, 1, 1, self.dim),
initializer=keras.initializers.Zeros(),
)
return super().build(input_shape)
def call(self, hidden_states: tf.Tensor):
global_features = tf.norm(hidden_states, ord="euclidean", axis=(1, 2), keepdims=True)
norm_features = global_features / (tf.reduce_mean(global_features, axis=-1, keepdims=True) + 1e-6)
hidden_states = self.weight * (hidden_states * norm_features) + self.bias + hidden_states
return hidden_states
# Copied from transformers.models.convnext.modeling_tf_convnext.TFConvNextEmbeddings with ConvNext->ConvNextV2
class TFConvNextV2Embeddings(keras.layers.Layer):
"""This class is comparable to (and inspired by) the SwinEmbeddings class
found in src/transformers/models/swin/modeling_swin.py.
"""
def __init__(self, config: ConvNextV2Config, **kwargs):
super().__init__(**kwargs)
self.patch_embeddings = keras.layers.Conv2D(
filters=config.hidden_sizes[0],
kernel_size=config.patch_size,
strides=config.patch_size,
name="patch_embeddings",
kernel_initializer=get_initializer(config.initializer_range),
bias_initializer=keras.initializers.Zeros(),
)
self.layernorm = keras.layers.LayerNormalization(epsilon=1e-6, name="layernorm")
self.num_channels = config.num_channels
self.config = config
def call(self, pixel_values):
if isinstance(pixel_values, dict):
pixel_values = pixel_values["pixel_values"]
tf.debugging.assert_equal(
shape_list(pixel_values)[1],
self.num_channels,
message="Make sure that the channel dimension of the pixel values match with the one set in the configuration.",
)
# When running on CPU, `keras.layers.Conv2D` doesn't support `NCHW` format.
# So change the input format from `NCHW` to `NHWC`.
# shape = (batch_size, in_height, in_width, in_channels)
pixel_values = tf.transpose(pixel_values, perm=(0, 2, 3, 1))
embeddings = self.patch_embeddings(pixel_values)
embeddings = self.layernorm(embeddings)
return embeddings
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "patch_embeddings", None) is not None:
with tf.name_scope(self.patch_embeddings.name):
self.patch_embeddings.build([None, None, None, self.config.num_channels])
if getattr(self, "layernorm", None) is not None:
with tf.name_scope(self.layernorm.name):
self.layernorm.build([None, None, None, self.config.hidden_sizes[0]])
class TFConvNextV2Layer(keras.layers.Layer):
"""This corresponds to the `Block` class in the original implementation.
There are two equivalent implementations: [DwConv, LayerNorm (channels_first), Conv, GELU,1x1 Conv]; all in (N, C,
H, W) (2) [DwConv, Permute to (N, H, W, C), LayerNorm (channels_last), Linear, GELU, Linear]; Permute back
The authors used (2) as they find it slightly faster in PyTorch. Since we already permuted the inputs to follow
NHWC ordering, we can just apply the operations straight-away without the permutation.
Args:
config (`ConvNextV2Config`):
Model configuration class.
dim (`int`):
Number of input channels.
drop_path (`float`, defaults to 0.0):
Stochastic depth rate.
"""
def __init__(self, config: ConvNextV2Config, dim: int, drop_path: float = 0.0, **kwargs):
super().__init__(**kwargs)
self.dim = dim
self.config = config
self.dwconv = keras.layers.Conv2D(
filters=dim,
kernel_size=7,
padding="same",
groups=dim,
kernel_initializer=get_initializer(config.initializer_range),
bias_initializer=keras.initializers.Zeros(),
name="dwconv",
) # depthwise conv
self.layernorm = keras.layers.LayerNormalization(
epsilon=1e-6,
name="layernorm",
)
self.pwconv1 = keras.layers.Dense(
units=4 * dim,
kernel_initializer=get_initializer(config.initializer_range),
bias_initializer=keras.initializers.Zeros(),
name="pwconv1",
) # pointwise/1x1 convs, implemented with linear layers
self.act = get_tf_activation(config.hidden_act)
self.grn = TFConvNextV2GRN(config, 4 * dim, dtype=tf.float32, name="grn")
self.pwconv2 = keras.layers.Dense(
units=dim,
kernel_initializer=get_initializer(config.initializer_range),
bias_initializer=keras.initializers.Zeros(),
name="pwconv2",
)
# Using `layers.Activation` instead of `tf.identity` to better control `training`
# behaviour.
self.drop_path = (
TFConvNextV2DropPath(drop_path, name="drop_path")
if drop_path > 0.0
else keras.layers.Activation("linear", name="drop_path")
)
def call(self, hidden_states, training=False):
input = hidden_states
x = self.dwconv(hidden_states)
x = self.layernorm(x)
x = self.pwconv1(x)
x = self.act(x)
x = self.grn(x)
x = self.pwconv2(x)
x = self.drop_path(x, training=training)
x = input + x
return x
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "dwconv", None) is not None:
with tf.name_scope(self.dwconv.name):
self.dwconv.build([None, None, None, self.dim])
if getattr(self, "layernorm", None) is not None:
with tf.name_scope(self.layernorm.name):
self.layernorm.build([None, None, None, self.dim])
if getattr(self, "pwconv1", None) is not None:
with tf.name_scope(self.pwconv1.name):
self.pwconv1.build([None, None, self.dim])
if getattr(self, "grn", None) is not None:
with tf.name_scope(self.grn.name):
self.grn.build(None)
if getattr(self, "pwconv2", None) is not None:
with tf.name_scope(self.pwconv2.name):
self.pwconv2.build([None, None, 4 * self.dim])
if getattr(self, "drop_path", None) is not None:
with tf.name_scope(self.drop_path.name):
self.drop_path.build(None)
# Copied from transformers.models.convnext.modeling_tf_convnext.TFConvNextStage with ConvNext->ConvNextV2
class TFConvNextV2Stage(keras.layers.Layer):
"""ConvNextV2 stage, consisting of an optional downsampling layer + multiple residual blocks.
Args:
config (`ConvNextV2V2Config`):
Model configuration class.
in_channels (`int`):
Number of input channels.
out_channels (`int`):
Number of output channels.
depth (`int`):
Number of residual blocks.
drop_path_rates(`List[float]`):
Stochastic depth rates for each layer.
"""
def __init__(
self,
config: ConvNextV2Config,
in_channels: int,
out_channels: int,
kernel_size: int = 2,
stride: int = 2,
depth: int = 2,
drop_path_rates: Optional[List[float]] = None,
**kwargs,
):
super().__init__(**kwargs)
if in_channels != out_channels or stride > 1:
self.downsampling_layer = [
keras.layers.LayerNormalization(
epsilon=1e-6,
name="downsampling_layer.0",
),
# Inputs to this layer will follow NHWC format since we
# transposed the inputs from NCHW to NHWC in the `TFConvNextV2Embeddings`
# layer. All the outputs throughout the model will be in NHWC
# from this point on until the output where we again change to
# NCHW.
keras.layers.Conv2D(
filters=out_channels,
kernel_size=kernel_size,
strides=stride,
kernel_initializer=get_initializer(config.initializer_range),
bias_initializer=keras.initializers.Zeros(),
name="downsampling_layer.1",
),
]
else:
self.downsampling_layer = [tf.identity]
drop_path_rates = drop_path_rates or [0.0] * depth
self.layers = [
TFConvNextV2Layer(
config,
dim=out_channels,
drop_path=drop_path_rates[j],
name=f"layers.{j}",
)
for j in range(depth)
]
self.in_channels = in_channels
self.out_channels = out_channels
self.stride = stride
def call(self, hidden_states):
for layer in self.downsampling_layer:
hidden_states = layer(hidden_states)
for layer in self.layers:
hidden_states = layer(hidden_states)
return hidden_states
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "layers", None) is not None:
for layer in self.layers:
with tf.name_scope(layer.name):
layer.build(None)
if self.in_channels != self.out_channels or self.stride > 1:
with tf.name_scope(self.downsampling_layer[0].name):
self.downsampling_layer[0].build([None, None, None, self.in_channels])
with tf.name_scope(self.downsampling_layer[1].name):
self.downsampling_layer[1].build([None, None, None, self.in_channels])
class TFConvNextV2Encoder(keras.layers.Layer):
def __init__(self, config: ConvNextV2Config, **kwargs):
super().__init__(**kwargs)
self.stages = []
drop_path_rates = tf.linspace(0.0, config.drop_path_rate, sum(config.depths))
drop_path_rates = tf.split(drop_path_rates, config.depths)
drop_path_rates = [x.numpy().tolist() for x in drop_path_rates]
prev_chs = config.hidden_sizes[0]
for i in range(config.num_stages):
out_chs = config.hidden_sizes[i]
stage = TFConvNextV2Stage(
config,
in_channels=prev_chs,
out_channels=out_chs,
stride=2 if i > 0 else 1,
depth=config.depths[i],
drop_path_rates=drop_path_rates[i],
name=f"stages.{i}",
)
self.stages.append(stage)
prev_chs = out_chs
def call(
self,
hidden_states: tf.Tensor,
output_hidden_states: Optional[bool] = False,
return_dict: Optional[bool] = True,
) -> Union[Tuple, TFBaseModelOutputWithNoAttention]:
all_hidden_states = () if output_hidden_states else None
for i, layer_module in enumerate(self.stages):
if output_hidden_states:
all_hidden_states = all_hidden_states + (hidden_states,)
hidden_states = layer_module(hidden_states)
if output_hidden_states:
all_hidden_states = all_hidden_states + (hidden_states,)
if not return_dict:
return tuple(v for v in [hidden_states, all_hidden_states] if v is not None)
return TFBaseModelOutputWithNoAttention(last_hidden_state=hidden_states, hidden_states=all_hidden_states)
def build(self, input_shape=None):
for stage in self.stages:
with tf.name_scope(stage.name):
stage.build(None)
@keras_serializable
class TFConvNextV2MainLayer(keras.layers.Layer):
config_class = ConvNextV2Config
def __init__(self, config: ConvNextV2Config, **kwargs):
super().__init__(**kwargs)
self.config = config
self.embeddings = TFConvNextV2Embeddings(config, name="embeddings")
self.encoder = TFConvNextV2Encoder(config, name="encoder")
self.layernorm = keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="layernorm")
# We are setting the `data_format` like so because from here on we will revert to the
# NCHW output format
self.pooler = keras.layers.GlobalAvgPool2D(data_format="channels_last")
@unpack_inputs
def call(
self,
pixel_values: TFModelInputType | None = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
training: bool = False,
) -> Union[TFBaseModelOutputWithPooling, Tuple[tf.Tensor]]:
output_hidden_states = (
output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
)
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
if pixel_values is None:
raise ValueError("You have to specify pixel_values")
embedding_output = self.embeddings(pixel_values, training=training)
encoder_outputs = self.encoder(
embedding_output,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
training=training,
)
last_hidden_state = encoder_outputs[0]
# Change to NCHW output format have uniformity in the modules
pooled_output = self.pooler(last_hidden_state)
last_hidden_state = tf.transpose(last_hidden_state, perm=(0, 3, 1, 2))
pooled_output = self.layernorm(pooled_output)
# Change the other hidden state outputs to NCHW as well
if output_hidden_states:
hidden_states = tuple([tf.transpose(h, perm=(0, 3, 1, 2)) for h in encoder_outputs[1]])
if not return_dict:
hidden_states = hidden_states if output_hidden_states else ()
return (last_hidden_state, pooled_output) + hidden_states
return TFBaseModelOutputWithPoolingAndNoAttention(
last_hidden_state=last_hidden_state,
pooler_output=pooled_output,
hidden_states=hidden_states if output_hidden_states else encoder_outputs.hidden_states,
)
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "embeddings", None) is not None:
with tf.name_scope(self.embeddings.name):
self.embeddings.build(None)
if getattr(self, "encoder", None) is not None:
with tf.name_scope(self.encoder.name):
self.encoder.build(None)
if getattr(self, "layernorm", None) is not None:
with tf.name_scope(self.layernorm.name):
self.layernorm.build([None, self.config.hidden_sizes[-1]])
class TFConvNextV2PreTrainedModel(TFPreTrainedModel):
"""
An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained
models.
"""
config_class = ConvNextV2Config
base_model_prefix = "convnextv2"
main_input_name = "pixel_values"
CONVNEXTV2_START_DOCSTRING = r"""
This model inherits from [`TFPreTrainedModel`]. Check the superclass documentation for the generic methods the
library implements for all its model (such as downloading or saving, resizing the input embeddings, pruning heads
etc.)
This model is also a [keras.Model](https://www.tensorflow.org/api_docs/python/tf/keras/Model) subclass. Use it
as a regular TF 2.0 Keras Model and refer to the TF 2.0 documentation for all matter related to general usage and
behavior.
<Tip>
TensorFlow models and layers in `transformers` accept two formats as input:
- having all inputs as keyword arguments (like PyTorch models), or
- having all inputs as a list, tuple or dict in the first positional argument.
The reason the second format is supported is that Keras methods prefer this format when passing inputs to models
and layers. Because of this support, when using methods like `model.fit()` things should "just work" for you - just
pass your inputs and labels in any format that `model.fit()` supports! If, however, you want to use the second
format outside of Keras methods like `fit()` and `predict()`, such as when creating your own layers or models with
the Keras `Functional` API, there are three possibilities you can use to gather all the input Tensors in the first
positional argument:
- a single Tensor with `pixel_values` only and nothing else: `model(pixel_values)`
- a list of varying length with one or several input Tensors IN THE ORDER given in the docstring:
`model([pixel_values, attention_mask])` or `model([pixel_values, attention_mask, token_type_ids])`
- a dictionary with one or several input Tensors associated to the input names given in the docstring:
`model({"pixel_values": pixel_values, "token_type_ids": token_type_ids})`
Note that when creating models and layers with
[subclassing](https://keras.io/guides/making_new_layers_and_models_via_subclassing/) then you don't need to worry
about any of this, as you can just pass inputs like you would to any other Python function!
</Tip>
Parameters:
config ([`ConvNextV2Config`]): Model configuration class with all the parameters of the model.
Initializing with a config file does not load the weights associated with the model, only the
configuration. Check out the [`~TFPreTrainedModel.from_pretrained`] method to load the model weights.
"""
CONVNEXTV2_INPUTS_DOCSTRING = r"""
Args:
pixel_values (`np.ndarray`, `tf.Tensor`, `List[tf.Tensor]`, `Dict[str, tf.Tensor]` or `Dict[str, np.ndarray]` and each example must have the shape `(batch_size, num_channels, height, width)`):
Pixel values. Pixel values can be obtained using [`AutoImageProcessor`]. See
[`ConvNextImageProcessor.__call__`] for details.
output_hidden_states (`bool`, *optional*):
Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for
more detail. This argument can be used only in eager mode, in graph mode the value in the config will be
used instead.
return_dict (`bool`, *optional*):
Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple. This argument can be used in
eager mode, in graph mode the value will always be set to `True`.
"""
@add_start_docstrings(
"The bare ConvNextV2 model outputting raw features without any specific head on top.",
CONVNEXTV2_START_DOCSTRING,
)
class TFConvNextV2Model(TFConvNextV2PreTrainedModel):
def __init__(self, config: ConvNextV2Config, *inputs, **kwargs):
super().__init__(config, *inputs, **kwargs)
self.convnextv2 = TFConvNextV2MainLayer(config, name="convnextv2")
@unpack_inputs
@add_start_docstrings_to_model_forward(CONVNEXTV2_INPUTS_DOCSTRING)
@add_code_sample_docstrings(
checkpoint=_CHECKPOINT_FOR_DOC,
output_type=TFBaseModelOutputWithPoolingAndNoAttention,
config_class=_CONFIG_FOR_DOC,
modality="vision",
expected_output=_EXPECTED_OUTPUT_SHAPE,
)
def call(
self,
pixel_values: TFModelInputType | None = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
training: bool = False,
) -> Union[TFBaseModelOutputWithPoolingAndNoAttention, Tuple[tf.Tensor]]:
output_hidden_states = (
output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
)
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
if pixel_values is None:
raise ValueError("You have to specify pixel_values")
outputs = self.convnextv2(
pixel_values=pixel_values,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
training=training,
)
if not return_dict:
return outputs[:]
return TFBaseModelOutputWithPoolingAndNoAttention(
last_hidden_state=outputs.last_hidden_state,
pooler_output=outputs.pooler_output,
hidden_states=outputs.hidden_states,
)
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "convnextv2", None) is not None:
with tf.name_scope(self.convnextv2.name):
self.convnextv2.build(None)
@add_start_docstrings(
"""
ConvNextV2 Model with an image classification head on top (a linear layer on top of the pooled features), e.g. for
ImageNet.
""",
CONVNEXTV2_START_DOCSTRING,
)
class TFConvNextV2ForImageClassification(TFConvNextV2PreTrainedModel, TFSequenceClassificationLoss):
def __init__(self, config: ConvNextV2Config, *inputs, **kwargs):
super().__init__(config, *inputs, **kwargs)
self.num_labels = config.num_labels
self.convnextv2 = TFConvNextV2MainLayer(config, name="convnextv2")
# Classifier head
self.classifier = keras.layers.Dense(
units=config.num_labels,
kernel_initializer=get_initializer(config.initializer_range),
bias_initializer=keras.initializers.Zeros(),
name="classifier",
)
@unpack_inputs
@add_start_docstrings_to_model_forward(CONVNEXTV2_INPUTS_DOCSTRING)
@add_code_sample_docstrings(
checkpoint=_IMAGE_CLASS_CHECKPOINT,
output_type=TFImageClassifierOutputWithNoAttention,
config_class=_CONFIG_FOR_DOC,
expected_output=_IMAGE_CLASS_EXPECTED_OUTPUT,
)
def call(
self,
pixel_values: TFModelInputType | None = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
labels: np.ndarray | tf.Tensor | None = None,
training: Optional[bool] = False,
) -> Union[TFImageClassifierOutputWithNoAttention, Tuple[tf.Tensor]]:
r"""
labels (`tf.Tensor` or `np.ndarray` of shape `(batch_size,)`, *optional*):
Labels for computing the image classification/regression loss. Indices should be in `[0, ...,
config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If
`config.num_labels > 1` a classification loss is computed (Cross-Entropy).
"""
output_hidden_states = (
output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
)
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
if pixel_values is None:
raise ValueError("You have to specify pixel_values")
outputs = self.convnextv2(
pixel_values,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
training=training,
)
pooled_output = outputs.pooler_output if return_dict else outputs[1]
logits = self.classifier(pooled_output)
loss = None if labels is None else self.hf_compute_loss(labels=labels, logits=logits)
if not return_dict:
output = (logits,) + outputs[2:]
return ((loss,) + output) if loss is not None else output
return TFImageClassifierOutputWithNoAttention(
loss=loss,
logits=logits,
hidden_states=outputs.hidden_states,
)
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "convnextv2", None) is not None:
with tf.name_scope(self.convnextv2.name):
self.convnextv2.build(None)
if getattr(self, "classifier", None) is not None:
with tf.name_scope(self.classifier.name):
self.classifier.build([None, None, self.config.hidden_sizes[-1]])
| transformers/src/transformers/models/convnextv2/modeling_tf_convnextv2.py/0 | {
"file_path": "transformers/src/transformers/models/convnextv2/modeling_tf_convnextv2.py",
"repo_id": "transformers",
"token_count": 11969
} | 319 |
# coding=utf-8
# Copyright 2022 Microsoft Research and The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
""" PyTorch CvT model."""
import collections.abc
from dataclasses import dataclass
from typing import Optional, Tuple, Union
import torch
import torch.utils.checkpoint
from torch import nn
from torch.nn import BCEWithLogitsLoss, CrossEntropyLoss, MSELoss
from ...file_utils import add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward
from ...modeling_outputs import ImageClassifierOutputWithNoAttention, ModelOutput
from ...modeling_utils import PreTrainedModel, find_pruneable_heads_and_indices, prune_linear_layer
from ...utils import logging
from .configuration_cvt import CvtConfig
logger = logging.get_logger(__name__)
# General docstring
_CONFIG_FOR_DOC = "CvtConfig"
# Base docstring
_CHECKPOINT_FOR_DOC = "microsoft/cvt-13"
_EXPECTED_OUTPUT_SHAPE = [1, 384, 14, 14]
# Image classification docstring
_IMAGE_CLASS_CHECKPOINT = "microsoft/cvt-13"
_IMAGE_CLASS_EXPECTED_OUTPUT = "tabby, tabby cat"
CVT_PRETRAINED_MODEL_ARCHIVE_LIST = [
"microsoft/cvt-13",
"microsoft/cvt-13-384",
"microsoft/cvt-13-384-22k",
"microsoft/cvt-21",
"microsoft/cvt-21-384",
"microsoft/cvt-21-384-22k",
# See all Cvt models at https://huggingface.co/models?filter=cvt
]
@dataclass
class BaseModelOutputWithCLSToken(ModelOutput):
"""
Base class for model's outputs, with potential hidden states and attentions.
Args:
last_hidden_state (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`):
Sequence of hidden-states at the output of the last layer of the model.
cls_token_value (`torch.FloatTensor` of shape `(batch_size, 1, hidden_size)`):
Classification token at the output of the last layer of the model.
hidden_states (`tuple(torch.FloatTensor)`, *optional*, returned when `output_hidden_states=True` is passed or when `config.output_hidden_states=True`):
Tuple of `torch.FloatTensor` (one for the output of the embeddings + one for the output of each layer) of
shape `(batch_size, sequence_length, hidden_size)`. Hidden-states of the model at the output of each layer
plus the initial embedding outputs.
"""
last_hidden_state: torch.FloatTensor = None
cls_token_value: torch.FloatTensor = None
hidden_states: Optional[Tuple[torch.FloatTensor, ...]] = None
# Copied from transformers.models.beit.modeling_beit.drop_path
def drop_path(input: torch.Tensor, drop_prob: float = 0.0, training: bool = False) -> torch.Tensor:
"""
Drop paths (Stochastic Depth) per sample (when applied in main path of residual blocks).
Comment by Ross Wightman: This is the same as the DropConnect impl I created for EfficientNet, etc networks,
however, the original name is misleading as 'Drop Connect' is a different form of dropout in a separate paper...
See discussion: https://github.com/tensorflow/tpu/issues/494#issuecomment-532968956 ... I've opted for changing the
layer and argument names to 'drop path' rather than mix DropConnect as a layer name and use 'survival rate' as the
argument.
"""
if drop_prob == 0.0 or not training:
return input
keep_prob = 1 - drop_prob
shape = (input.shape[0],) + (1,) * (input.ndim - 1) # work with diff dim tensors, not just 2D ConvNets
random_tensor = keep_prob + torch.rand(shape, dtype=input.dtype, device=input.device)
random_tensor.floor_() # binarize
output = input.div(keep_prob) * random_tensor
return output
# Copied from transformers.models.beit.modeling_beit.BeitDropPath
class CvtDropPath(nn.Module):
"""Drop paths (Stochastic Depth) per sample (when applied in main path of residual blocks)."""
def __init__(self, drop_prob: Optional[float] = None) -> None:
super().__init__()
self.drop_prob = drop_prob
def forward(self, hidden_states: torch.Tensor) -> torch.Tensor:
return drop_path(hidden_states, self.drop_prob, self.training)
def extra_repr(self) -> str:
return "p={}".format(self.drop_prob)
class CvtEmbeddings(nn.Module):
"""
Construct the CvT embeddings.
"""
def __init__(self, patch_size, num_channels, embed_dim, stride, padding, dropout_rate):
super().__init__()
self.convolution_embeddings = CvtConvEmbeddings(
patch_size=patch_size, num_channels=num_channels, embed_dim=embed_dim, stride=stride, padding=padding
)
self.dropout = nn.Dropout(dropout_rate)
def forward(self, pixel_values):
hidden_state = self.convolution_embeddings(pixel_values)
hidden_state = self.dropout(hidden_state)
return hidden_state
class CvtConvEmbeddings(nn.Module):
"""
Image to Conv Embedding.
"""
def __init__(self, patch_size, num_channels, embed_dim, stride, padding):
super().__init__()
patch_size = patch_size if isinstance(patch_size, collections.abc.Iterable) else (patch_size, patch_size)
self.patch_size = patch_size
self.projection = nn.Conv2d(num_channels, embed_dim, kernel_size=patch_size, stride=stride, padding=padding)
self.normalization = nn.LayerNorm(embed_dim)
def forward(self, pixel_values):
pixel_values = self.projection(pixel_values)
batch_size, num_channels, height, width = pixel_values.shape
hidden_size = height * width
# rearrange "b c h w -> b (h w) c"
pixel_values = pixel_values.view(batch_size, num_channels, hidden_size).permute(0, 2, 1)
if self.normalization:
pixel_values = self.normalization(pixel_values)
# rearrange "b (h w) c" -> b c h w"
pixel_values = pixel_values.permute(0, 2, 1).view(batch_size, num_channels, height, width)
return pixel_values
class CvtSelfAttentionConvProjection(nn.Module):
def __init__(self, embed_dim, kernel_size, padding, stride):
super().__init__()
self.convolution = nn.Conv2d(
embed_dim,
embed_dim,
kernel_size=kernel_size,
padding=padding,
stride=stride,
bias=False,
groups=embed_dim,
)
self.normalization = nn.BatchNorm2d(embed_dim)
def forward(self, hidden_state):
hidden_state = self.convolution(hidden_state)
hidden_state = self.normalization(hidden_state)
return hidden_state
class CvtSelfAttentionLinearProjection(nn.Module):
def forward(self, hidden_state):
batch_size, num_channels, height, width = hidden_state.shape
hidden_size = height * width
# rearrange " b c h w -> b (h w) c"
hidden_state = hidden_state.view(batch_size, num_channels, hidden_size).permute(0, 2, 1)
return hidden_state
class CvtSelfAttentionProjection(nn.Module):
def __init__(self, embed_dim, kernel_size, padding, stride, projection_method="dw_bn"):
super().__init__()
if projection_method == "dw_bn":
self.convolution_projection = CvtSelfAttentionConvProjection(embed_dim, kernel_size, padding, stride)
self.linear_projection = CvtSelfAttentionLinearProjection()
def forward(self, hidden_state):
hidden_state = self.convolution_projection(hidden_state)
hidden_state = self.linear_projection(hidden_state)
return hidden_state
class CvtSelfAttention(nn.Module):
def __init__(
self,
num_heads,
embed_dim,
kernel_size,
padding_q,
padding_kv,
stride_q,
stride_kv,
qkv_projection_method,
qkv_bias,
attention_drop_rate,
with_cls_token=True,
**kwargs,
):
super().__init__()
self.scale = embed_dim**-0.5
self.with_cls_token = with_cls_token
self.embed_dim = embed_dim
self.num_heads = num_heads
self.convolution_projection_query = CvtSelfAttentionProjection(
embed_dim,
kernel_size,
padding_q,
stride_q,
projection_method="linear" if qkv_projection_method == "avg" else qkv_projection_method,
)
self.convolution_projection_key = CvtSelfAttentionProjection(
embed_dim, kernel_size, padding_kv, stride_kv, projection_method=qkv_projection_method
)
self.convolution_projection_value = CvtSelfAttentionProjection(
embed_dim, kernel_size, padding_kv, stride_kv, projection_method=qkv_projection_method
)
self.projection_query = nn.Linear(embed_dim, embed_dim, bias=qkv_bias)
self.projection_key = nn.Linear(embed_dim, embed_dim, bias=qkv_bias)
self.projection_value = nn.Linear(embed_dim, embed_dim, bias=qkv_bias)
self.dropout = nn.Dropout(attention_drop_rate)
def rearrange_for_multi_head_attention(self, hidden_state):
batch_size, hidden_size, _ = hidden_state.shape
head_dim = self.embed_dim // self.num_heads
# rearrange 'b t (h d) -> b h t d'
return hidden_state.view(batch_size, hidden_size, self.num_heads, head_dim).permute(0, 2, 1, 3)
def forward(self, hidden_state, height, width):
if self.with_cls_token:
cls_token, hidden_state = torch.split(hidden_state, [1, height * width], 1)
batch_size, hidden_size, num_channels = hidden_state.shape
# rearrange "b (h w) c -> b c h w"
hidden_state = hidden_state.permute(0, 2, 1).view(batch_size, num_channels, height, width)
key = self.convolution_projection_key(hidden_state)
query = self.convolution_projection_query(hidden_state)
value = self.convolution_projection_value(hidden_state)
if self.with_cls_token:
query = torch.cat((cls_token, query), dim=1)
key = torch.cat((cls_token, key), dim=1)
value = torch.cat((cls_token, value), dim=1)
head_dim = self.embed_dim // self.num_heads
query = self.rearrange_for_multi_head_attention(self.projection_query(query))
key = self.rearrange_for_multi_head_attention(self.projection_key(key))
value = self.rearrange_for_multi_head_attention(self.projection_value(value))
attention_score = torch.einsum("bhlk,bhtk->bhlt", [query, key]) * self.scale
attention_probs = torch.nn.functional.softmax(attention_score, dim=-1)
attention_probs = self.dropout(attention_probs)
context = torch.einsum("bhlt,bhtv->bhlv", [attention_probs, value])
# rearrange"b h t d -> b t (h d)"
_, _, hidden_size, _ = context.shape
context = context.permute(0, 2, 1, 3).contiguous().view(batch_size, hidden_size, self.num_heads * head_dim)
return context
class CvtSelfOutput(nn.Module):
"""
The residual connection is defined in CvtLayer instead of here (as is the case with other models), due to the
layernorm applied before each block.
"""
def __init__(self, embed_dim, drop_rate):
super().__init__()
self.dense = nn.Linear(embed_dim, embed_dim)
self.dropout = nn.Dropout(drop_rate)
def forward(self, hidden_state, input_tensor):
hidden_state = self.dense(hidden_state)
hidden_state = self.dropout(hidden_state)
return hidden_state
class CvtAttention(nn.Module):
def __init__(
self,
num_heads,
embed_dim,
kernel_size,
padding_q,
padding_kv,
stride_q,
stride_kv,
qkv_projection_method,
qkv_bias,
attention_drop_rate,
drop_rate,
with_cls_token=True,
):
super().__init__()
self.attention = CvtSelfAttention(
num_heads,
embed_dim,
kernel_size,
padding_q,
padding_kv,
stride_q,
stride_kv,
qkv_projection_method,
qkv_bias,
attention_drop_rate,
with_cls_token,
)
self.output = CvtSelfOutput(embed_dim, drop_rate)
self.pruned_heads = set()
def prune_heads(self, heads):
if len(heads) == 0:
return
heads, index = find_pruneable_heads_and_indices(
heads, self.attention.num_attention_heads, self.attention.attention_head_size, self.pruned_heads
)
# Prune linear layers
self.attention.query = prune_linear_layer(self.attention.query, index)
self.attention.key = prune_linear_layer(self.attention.key, index)
self.attention.value = prune_linear_layer(self.attention.value, index)
self.output.dense = prune_linear_layer(self.output.dense, index, dim=1)
# Update hyper params and store pruned heads
self.attention.num_attention_heads = self.attention.num_attention_heads - len(heads)
self.attention.all_head_size = self.attention.attention_head_size * self.attention.num_attention_heads
self.pruned_heads = self.pruned_heads.union(heads)
def forward(self, hidden_state, height, width):
self_output = self.attention(hidden_state, height, width)
attention_output = self.output(self_output, hidden_state)
return attention_output
class CvtIntermediate(nn.Module):
def __init__(self, embed_dim, mlp_ratio):
super().__init__()
self.dense = nn.Linear(embed_dim, int(embed_dim * mlp_ratio))
self.activation = nn.GELU()
def forward(self, hidden_state):
hidden_state = self.dense(hidden_state)
hidden_state = self.activation(hidden_state)
return hidden_state
class CvtOutput(nn.Module):
def __init__(self, embed_dim, mlp_ratio, drop_rate):
super().__init__()
self.dense = nn.Linear(int(embed_dim * mlp_ratio), embed_dim)
self.dropout = nn.Dropout(drop_rate)
def forward(self, hidden_state, input_tensor):
hidden_state = self.dense(hidden_state)
hidden_state = self.dropout(hidden_state)
hidden_state = hidden_state + input_tensor
return hidden_state
class CvtLayer(nn.Module):
"""
CvtLayer composed by attention layers, normalization and multi-layer perceptrons (mlps).
"""
def __init__(
self,
num_heads,
embed_dim,
kernel_size,
padding_q,
padding_kv,
stride_q,
stride_kv,
qkv_projection_method,
qkv_bias,
attention_drop_rate,
drop_rate,
mlp_ratio,
drop_path_rate,
with_cls_token=True,
):
super().__init__()
self.attention = CvtAttention(
num_heads,
embed_dim,
kernel_size,
padding_q,
padding_kv,
stride_q,
stride_kv,
qkv_projection_method,
qkv_bias,
attention_drop_rate,
drop_rate,
with_cls_token,
)
self.intermediate = CvtIntermediate(embed_dim, mlp_ratio)
self.output = CvtOutput(embed_dim, mlp_ratio, drop_rate)
self.drop_path = CvtDropPath(drop_prob=drop_path_rate) if drop_path_rate > 0.0 else nn.Identity()
self.layernorm_before = nn.LayerNorm(embed_dim)
self.layernorm_after = nn.LayerNorm(embed_dim)
def forward(self, hidden_state, height, width):
self_attention_output = self.attention(
self.layernorm_before(hidden_state), # in Cvt, layernorm is applied before self-attention
height,
width,
)
attention_output = self_attention_output
attention_output = self.drop_path(attention_output)
# first residual connection
hidden_state = attention_output + hidden_state
# in Cvt, layernorm is also applied after self-attention
layer_output = self.layernorm_after(hidden_state)
layer_output = self.intermediate(layer_output)
# second residual connection is done here
layer_output = self.output(layer_output, hidden_state)
layer_output = self.drop_path(layer_output)
return layer_output
class CvtStage(nn.Module):
def __init__(self, config, stage):
super().__init__()
self.config = config
self.stage = stage
if self.config.cls_token[self.stage]:
self.cls_token = nn.Parameter(torch.randn(1, 1, self.config.embed_dim[-1]))
self.embedding = CvtEmbeddings(
patch_size=config.patch_sizes[self.stage],
stride=config.patch_stride[self.stage],
num_channels=config.num_channels if self.stage == 0 else config.embed_dim[self.stage - 1],
embed_dim=config.embed_dim[self.stage],
padding=config.patch_padding[self.stage],
dropout_rate=config.drop_rate[self.stage],
)
drop_path_rates = [x.item() for x in torch.linspace(0, config.drop_path_rate[self.stage], config.depth[stage])]
self.layers = nn.Sequential(
*[
CvtLayer(
num_heads=config.num_heads[self.stage],
embed_dim=config.embed_dim[self.stage],
kernel_size=config.kernel_qkv[self.stage],
padding_q=config.padding_q[self.stage],
padding_kv=config.padding_kv[self.stage],
stride_kv=config.stride_kv[self.stage],
stride_q=config.stride_q[self.stage],
qkv_projection_method=config.qkv_projection_method[self.stage],
qkv_bias=config.qkv_bias[self.stage],
attention_drop_rate=config.attention_drop_rate[self.stage],
drop_rate=config.drop_rate[self.stage],
drop_path_rate=drop_path_rates[self.stage],
mlp_ratio=config.mlp_ratio[self.stage],
with_cls_token=config.cls_token[self.stage],
)
for _ in range(config.depth[self.stage])
]
)
def forward(self, hidden_state):
cls_token = None
hidden_state = self.embedding(hidden_state)
batch_size, num_channels, height, width = hidden_state.shape
# rearrange b c h w -> b (h w) c"
hidden_state = hidden_state.view(batch_size, num_channels, height * width).permute(0, 2, 1)
if self.config.cls_token[self.stage]:
cls_token = self.cls_token.expand(batch_size, -1, -1)
hidden_state = torch.cat((cls_token, hidden_state), dim=1)
for layer in self.layers:
layer_outputs = layer(hidden_state, height, width)
hidden_state = layer_outputs
if self.config.cls_token[self.stage]:
cls_token, hidden_state = torch.split(hidden_state, [1, height * width], 1)
hidden_state = hidden_state.permute(0, 2, 1).view(batch_size, num_channels, height, width)
return hidden_state, cls_token
class CvtEncoder(nn.Module):
def __init__(self, config):
super().__init__()
self.config = config
self.stages = nn.ModuleList([])
for stage_idx in range(len(config.depth)):
self.stages.append(CvtStage(config, stage_idx))
def forward(self, pixel_values, output_hidden_states=False, return_dict=True):
all_hidden_states = () if output_hidden_states else None
hidden_state = pixel_values
cls_token = None
for _, (stage_module) in enumerate(self.stages):
hidden_state, cls_token = stage_module(hidden_state)
if output_hidden_states:
all_hidden_states = all_hidden_states + (hidden_state,)
if not return_dict:
return tuple(v for v in [hidden_state, cls_token, all_hidden_states] if v is not None)
return BaseModelOutputWithCLSToken(
last_hidden_state=hidden_state,
cls_token_value=cls_token,
hidden_states=all_hidden_states,
)
class CvtPreTrainedModel(PreTrainedModel):
"""
An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained
models.
"""
config_class = CvtConfig
base_model_prefix = "cvt"
main_input_name = "pixel_values"
def _init_weights(self, module):
"""Initialize the weights"""
if isinstance(module, (nn.Linear, nn.Conv2d)):
module.weight.data = nn.init.trunc_normal_(module.weight.data, mean=0.0, std=self.config.initializer_range)
if module.bias is not None:
module.bias.data.zero_()
elif isinstance(module, nn.LayerNorm):
module.bias.data.zero_()
module.weight.data.fill_(1.0)
elif isinstance(module, CvtStage):
if self.config.cls_token[module.stage]:
module.cls_token.data = nn.init.trunc_normal_(
torch.zeros(1, 1, self.config.embed_dim[-1]), mean=0.0, std=self.config.initializer_range
)
CVT_START_DOCSTRING = r"""
This model is a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) subclass. Use it
as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and
behavior.
Parameters:
config ([`CvtConfig`]): Model configuration class with all the parameters of the model.
Initializing with a config file does not load the weights associated with the model, only the
configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights.
"""
CVT_INPUTS_DOCSTRING = r"""
Args:
pixel_values (`torch.FloatTensor` of shape `(batch_size, num_channels, height, width)`):
Pixel values. Pixel values can be obtained using [`AutoImageProcessor`]. See [`CvtImageProcessor.__call__`]
for details.
output_hidden_states (`bool`, *optional*):
Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for
more detail.
return_dict (`bool`, *optional*):
Whether or not to return a [`~file_utils.ModelOutput`] instead of a plain tuple.
"""
@add_start_docstrings(
"The bare Cvt Model transformer outputting raw hidden-states without any specific head on top.",
CVT_START_DOCSTRING,
)
class CvtModel(CvtPreTrainedModel):
def __init__(self, config, add_pooling_layer=True):
super().__init__(config)
self.config = config
self.encoder = CvtEncoder(config)
self.post_init()
def _prune_heads(self, heads_to_prune):
"""
Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base
class PreTrainedModel
"""
for layer, heads in heads_to_prune.items():
self.encoder.layer[layer].attention.prune_heads(heads)
@add_start_docstrings_to_model_forward(CVT_INPUTS_DOCSTRING)
@add_code_sample_docstrings(
checkpoint=_CHECKPOINT_FOR_DOC,
output_type=BaseModelOutputWithCLSToken,
config_class=_CONFIG_FOR_DOC,
modality="vision",
expected_output=_EXPECTED_OUTPUT_SHAPE,
)
def forward(
self,
pixel_values: Optional[torch.Tensor] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
) -> Union[Tuple, BaseModelOutputWithCLSToken]:
output_hidden_states = (
output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
)
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
if pixel_values is None:
raise ValueError("You have to specify pixel_values")
encoder_outputs = self.encoder(
pixel_values,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
)
sequence_output = encoder_outputs[0]
if not return_dict:
return (sequence_output,) + encoder_outputs[1:]
return BaseModelOutputWithCLSToken(
last_hidden_state=sequence_output,
cls_token_value=encoder_outputs.cls_token_value,
hidden_states=encoder_outputs.hidden_states,
)
@add_start_docstrings(
"""
Cvt Model transformer with an image classification head on top (a linear layer on top of the final hidden state of
the [CLS] token) e.g. for ImageNet.
""",
CVT_START_DOCSTRING,
)
class CvtForImageClassification(CvtPreTrainedModel):
def __init__(self, config):
super().__init__(config)
self.num_labels = config.num_labels
self.cvt = CvtModel(config, add_pooling_layer=False)
self.layernorm = nn.LayerNorm(config.embed_dim[-1])
# Classifier head
self.classifier = (
nn.Linear(config.embed_dim[-1], config.num_labels) if config.num_labels > 0 else nn.Identity()
)
# Initialize weights and apply final processing
self.post_init()
@add_start_docstrings_to_model_forward(CVT_INPUTS_DOCSTRING)
@add_code_sample_docstrings(
checkpoint=_IMAGE_CLASS_CHECKPOINT,
output_type=ImageClassifierOutputWithNoAttention,
config_class=_CONFIG_FOR_DOC,
expected_output=_IMAGE_CLASS_EXPECTED_OUTPUT,
)
def forward(
self,
pixel_values: Optional[torch.Tensor] = None,
labels: Optional[torch.Tensor] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
) -> Union[Tuple, ImageClassifierOutputWithNoAttention]:
r"""
labels (`torch.LongTensor` of shape `(batch_size,)`, *optional*):
Labels for computing the image classification/regression loss. Indices should be in `[0, ...,
config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If
`config.num_labels > 1` a classification loss is computed (Cross-Entropy).
"""
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
outputs = self.cvt(
pixel_values,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
)
sequence_output = outputs[0]
cls_token = outputs[1]
if self.config.cls_token[-1]:
sequence_output = self.layernorm(cls_token)
else:
batch_size, num_channels, height, width = sequence_output.shape
# rearrange "b c h w -> b (h w) c"
sequence_output = sequence_output.view(batch_size, num_channels, height * width).permute(0, 2, 1)
sequence_output = self.layernorm(sequence_output)
sequence_output_mean = sequence_output.mean(dim=1)
logits = self.classifier(sequence_output_mean)
loss = None
if labels is not None:
if self.config.problem_type is None:
if self.config.num_labels == 1:
self.config.problem_type = "regression"
elif self.config.num_labels > 1 and (labels.dtype == torch.long or labels.dtype == torch.int):
self.config.problem_type = "single_label_classification"
else:
self.config.problem_type = "multi_label_classification"
if self.config.problem_type == "regression":
loss_fct = MSELoss()
if self.config.num_labels == 1:
loss = loss_fct(logits.squeeze(), labels.squeeze())
else:
loss = loss_fct(logits, labels)
elif self.config.problem_type == "single_label_classification":
loss_fct = CrossEntropyLoss()
loss = loss_fct(logits.view(-1, self.config.num_labels), labels.view(-1))
elif self.config.problem_type == "multi_label_classification":
loss_fct = BCEWithLogitsLoss()
loss = loss_fct(logits, labels)
if not return_dict:
output = (logits,) + outputs[2:]
return ((loss,) + output) if loss is not None else output
return ImageClassifierOutputWithNoAttention(loss=loss, logits=logits, hidden_states=outputs.hidden_states)
| transformers/src/transformers/models/cvt/modeling_cvt.py/0 | {
"file_path": "transformers/src/transformers/models/cvt/modeling_cvt.py",
"repo_id": "transformers",
"token_count": 12594
} | 320 |
# coding=utf-8
# Copyright 2021 Microsoft and The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
""" TF 2.0 DeBERTa model."""
from __future__ import annotations
import math
from typing import Dict, Optional, Sequence, Tuple, Union
import numpy as np
import tensorflow as tf
from ...activations_tf import get_tf_activation
from ...modeling_tf_outputs import (
TFBaseModelOutput,
TFMaskedLMOutput,
TFQuestionAnsweringModelOutput,
TFSequenceClassifierOutput,
TFTokenClassifierOutput,
)
from ...modeling_tf_utils import (
TFMaskedLanguageModelingLoss,
TFModelInputType,
TFPreTrainedModel,
TFQuestionAnsweringLoss,
TFSequenceClassificationLoss,
TFTokenClassificationLoss,
get_initializer,
keras,
unpack_inputs,
)
from ...tf_utils import check_embeddings_within_bounds, shape_list, stable_softmax
from ...utils import add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward, logging
from .configuration_deberta import DebertaConfig
logger = logging.get_logger(__name__)
_CONFIG_FOR_DOC = "DebertaConfig"
_CHECKPOINT_FOR_DOC = "kamalkraj/deberta-base"
TF_DEBERTA_PRETRAINED_MODEL_ARCHIVE_LIST = [
"kamalkraj/deberta-base",
# See all DeBERTa models at https://huggingface.co/models?filter=DeBERTa
]
class TFDebertaContextPooler(keras.layers.Layer):
def __init__(self, config: DebertaConfig, **kwargs):
super().__init__(**kwargs)
self.dense = keras.layers.Dense(config.pooler_hidden_size, name="dense")
self.dropout = TFDebertaStableDropout(config.pooler_dropout, name="dropout")
self.config = config
def call(self, hidden_states, training: bool = False):
# We "pool" the model by simply taking the hidden state corresponding
# to the first token.
context_token = hidden_states[:, 0]
context_token = self.dropout(context_token, training=training)
pooled_output = self.dense(context_token)
pooled_output = get_tf_activation(self.config.pooler_hidden_act)(pooled_output)
return pooled_output
@property
def output_dim(self) -> int:
return self.config.hidden_size
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "dense", None) is not None:
with tf.name_scope(self.dense.name):
self.dense.build([None, None, self.config.pooler_hidden_size])
if getattr(self, "dropout", None) is not None:
with tf.name_scope(self.dropout.name):
self.dropout.build(None)
class TFDebertaXSoftmax(keras.layers.Layer):
"""
Masked Softmax which is optimized for saving memory
Args:
input (`tf.Tensor`): The input tensor that will apply softmax.
mask (`tf.Tensor`): The mask matrix where 0 indicate that element will be ignored in the softmax calculation.
dim (int): The dimension that will apply softmax
"""
def __init__(self, axis=-1, **kwargs):
super().__init__(**kwargs)
self.axis = axis
def call(self, inputs: tf.Tensor, mask: tf.Tensor):
rmask = tf.logical_not(tf.cast(mask, tf.bool))
output = tf.where(rmask, float("-inf"), inputs)
output = stable_softmax(output, self.axis)
output = tf.where(rmask, 0.0, output)
return output
class TFDebertaStableDropout(keras.layers.Layer):
"""
Optimized dropout module for stabilizing the training
Args:
drop_prob (float): the dropout probabilities
"""
def __init__(self, drop_prob, **kwargs):
super().__init__(**kwargs)
self.drop_prob = drop_prob
@tf.custom_gradient
def xdropout(self, inputs):
"""
Applies dropout to the inputs, as vanilla dropout, but also scales the remaining elements up by 1/drop_prob.
"""
mask = tf.cast(
1
- tf.compat.v1.distributions.Bernoulli(probs=1.0 - self.drop_prob).sample(sample_shape=shape_list(inputs)),
tf.bool,
)
scale = tf.convert_to_tensor(1.0 / (1 - self.drop_prob), dtype=tf.float32)
if self.drop_prob > 0:
inputs = tf.where(mask, 0.0, inputs) * scale
def grad(upstream):
if self.drop_prob > 0:
return tf.where(mask, 0.0, upstream) * scale
else:
return upstream
return inputs, grad
def call(self, inputs: tf.Tensor, training: tf.Tensor = False):
if training:
return self.xdropout(inputs)
return inputs
class TFDebertaLayerNorm(keras.layers.Layer):
"""LayerNorm module in the TF style (epsilon inside the square root)."""
def __init__(self, size, eps=1e-12, **kwargs):
super().__init__(**kwargs)
self.size = size
self.eps = eps
def build(self, input_shape):
self.gamma = self.add_weight(shape=[self.size], initializer=tf.ones_initializer(), name="weight")
self.beta = self.add_weight(shape=[self.size], initializer=tf.zeros_initializer(), name="bias")
return super().build(input_shape)
def call(self, x: tf.Tensor) -> tf.Tensor:
mean = tf.reduce_mean(x, axis=[-1], keepdims=True)
variance = tf.reduce_mean(tf.square(x - mean), axis=[-1], keepdims=True)
std = tf.math.sqrt(variance + self.eps)
return self.gamma * (x - mean) / std + self.beta
class TFDebertaSelfOutput(keras.layers.Layer):
def __init__(self, config: DebertaConfig, **kwargs):
super().__init__(**kwargs)
self.dense = keras.layers.Dense(config.hidden_size, name="dense")
self.LayerNorm = keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm")
self.dropout = TFDebertaStableDropout(config.hidden_dropout_prob, name="dropout")
self.config = config
def call(self, hidden_states, input_tensor, training: bool = False):
hidden_states = self.dense(hidden_states)
hidden_states = self.dropout(hidden_states, training=training)
hidden_states = self.LayerNorm(hidden_states + input_tensor)
return hidden_states
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "dense", None) is not None:
with tf.name_scope(self.dense.name):
self.dense.build([None, None, self.config.hidden_size])
if getattr(self, "LayerNorm", None) is not None:
with tf.name_scope(self.LayerNorm.name):
self.LayerNorm.build([None, None, self.config.hidden_size])
if getattr(self, "dropout", None) is not None:
with tf.name_scope(self.dropout.name):
self.dropout.build(None)
class TFDebertaAttention(keras.layers.Layer):
def __init__(self, config: DebertaConfig, **kwargs):
super().__init__(**kwargs)
self.self = TFDebertaDisentangledSelfAttention(config, name="self")
self.dense_output = TFDebertaSelfOutput(config, name="output")
self.config = config
def call(
self,
input_tensor: tf.Tensor,
attention_mask: tf.Tensor,
query_states: tf.Tensor = None,
relative_pos: tf.Tensor = None,
rel_embeddings: tf.Tensor = None,
output_attentions: bool = False,
training: bool = False,
) -> Tuple[tf.Tensor]:
self_outputs = self.self(
hidden_states=input_tensor,
attention_mask=attention_mask,
query_states=query_states,
relative_pos=relative_pos,
rel_embeddings=rel_embeddings,
output_attentions=output_attentions,
training=training,
)
if query_states is None:
query_states = input_tensor
attention_output = self.dense_output(
hidden_states=self_outputs[0], input_tensor=query_states, training=training
)
output = (attention_output,) + self_outputs[1:]
return output
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "self", None) is not None:
with tf.name_scope(self.self.name):
self.self.build(None)
if getattr(self, "dense_output", None) is not None:
with tf.name_scope(self.dense_output.name):
self.dense_output.build(None)
class TFDebertaIntermediate(keras.layers.Layer):
def __init__(self, config: DebertaConfig, **kwargs):
super().__init__(**kwargs)
self.dense = keras.layers.Dense(
units=config.intermediate_size, kernel_initializer=get_initializer(config.initializer_range), name="dense"
)
if isinstance(config.hidden_act, str):
self.intermediate_act_fn = get_tf_activation(config.hidden_act)
else:
self.intermediate_act_fn = config.hidden_act
self.config = config
def call(self, hidden_states: tf.Tensor) -> tf.Tensor:
hidden_states = self.dense(inputs=hidden_states)
hidden_states = self.intermediate_act_fn(hidden_states)
return hidden_states
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "dense", None) is not None:
with tf.name_scope(self.dense.name):
self.dense.build([None, None, self.config.hidden_size])
class TFDebertaOutput(keras.layers.Layer):
def __init__(self, config: DebertaConfig, **kwargs):
super().__init__(**kwargs)
self.dense = keras.layers.Dense(
units=config.hidden_size, kernel_initializer=get_initializer(config.initializer_range), name="dense"
)
self.LayerNorm = keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm")
self.dropout = TFDebertaStableDropout(config.hidden_dropout_prob, name="dropout")
self.config = config
def call(self, hidden_states: tf.Tensor, input_tensor: tf.Tensor, training: bool = False) -> tf.Tensor:
hidden_states = self.dense(inputs=hidden_states)
hidden_states = self.dropout(hidden_states, training=training)
hidden_states = self.LayerNorm(hidden_states + input_tensor)
return hidden_states
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "dense", None) is not None:
with tf.name_scope(self.dense.name):
self.dense.build([None, None, self.config.intermediate_size])
if getattr(self, "LayerNorm", None) is not None:
with tf.name_scope(self.LayerNorm.name):
self.LayerNorm.build([None, None, self.config.hidden_size])
if getattr(self, "dropout", None) is not None:
with tf.name_scope(self.dropout.name):
self.dropout.build(None)
class TFDebertaLayer(keras.layers.Layer):
def __init__(self, config: DebertaConfig, **kwargs):
super().__init__(**kwargs)
self.attention = TFDebertaAttention(config, name="attention")
self.intermediate = TFDebertaIntermediate(config, name="intermediate")
self.bert_output = TFDebertaOutput(config, name="output")
def call(
self,
hidden_states: tf.Tensor,
attention_mask: tf.Tensor,
query_states: tf.Tensor = None,
relative_pos: tf.Tensor = None,
rel_embeddings: tf.Tensor = None,
output_attentions: bool = False,
training: bool = False,
) -> Tuple[tf.Tensor]:
attention_outputs = self.attention(
input_tensor=hidden_states,
attention_mask=attention_mask,
query_states=query_states,
relative_pos=relative_pos,
rel_embeddings=rel_embeddings,
output_attentions=output_attentions,
training=training,
)
attention_output = attention_outputs[0]
intermediate_output = self.intermediate(hidden_states=attention_output)
layer_output = self.bert_output(
hidden_states=intermediate_output, input_tensor=attention_output, training=training
)
outputs = (layer_output,) + attention_outputs[1:] # add attentions if we output them
return outputs
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "attention", None) is not None:
with tf.name_scope(self.attention.name):
self.attention.build(None)
if getattr(self, "intermediate", None) is not None:
with tf.name_scope(self.intermediate.name):
self.intermediate.build(None)
if getattr(self, "bert_output", None) is not None:
with tf.name_scope(self.bert_output.name):
self.bert_output.build(None)
class TFDebertaEncoder(keras.layers.Layer):
def __init__(self, config: DebertaConfig, **kwargs):
super().__init__(**kwargs)
self.layer = [TFDebertaLayer(config, name=f"layer_._{i}") for i in range(config.num_hidden_layers)]
self.relative_attention = getattr(config, "relative_attention", False)
self.config = config
if self.relative_attention:
self.max_relative_positions = getattr(config, "max_relative_positions", -1)
if self.max_relative_positions < 1:
self.max_relative_positions = config.max_position_embeddings
def build(self, input_shape=None):
if self.built:
return
self.built = True
if self.relative_attention:
self.rel_embeddings = self.add_weight(
name="rel_embeddings.weight",
shape=[self.max_relative_positions * 2, self.config.hidden_size],
initializer=get_initializer(self.config.initializer_range),
)
if getattr(self, "layer", None) is not None:
for layer in self.layer:
with tf.name_scope(layer.name):
layer.build(None)
def get_rel_embedding(self):
rel_embeddings = self.rel_embeddings if self.relative_attention else None
return rel_embeddings
def get_attention_mask(self, attention_mask):
if len(shape_list(attention_mask)) <= 2:
extended_attention_mask = tf.expand_dims(tf.expand_dims(attention_mask, 1), 2)
attention_mask = extended_attention_mask * tf.expand_dims(tf.squeeze(extended_attention_mask, -2), -1)
attention_mask = tf.cast(attention_mask, tf.uint8)
elif len(shape_list(attention_mask)) == 3:
attention_mask = tf.expand_dims(attention_mask, 1)
return attention_mask
def get_rel_pos(self, hidden_states, query_states=None, relative_pos=None):
if self.relative_attention and relative_pos is None:
q = shape_list(query_states)[-2] if query_states is not None else shape_list(hidden_states)[-2]
relative_pos = build_relative_position(q, shape_list(hidden_states)[-2])
return relative_pos
def call(
self,
hidden_states: tf.Tensor,
attention_mask: tf.Tensor,
query_states: tf.Tensor = None,
relative_pos: tf.Tensor = None,
output_attentions: bool = False,
output_hidden_states: bool = False,
return_dict: bool = True,
training: bool = False,
) -> Union[TFBaseModelOutput, Tuple[tf.Tensor]]:
all_hidden_states = () if output_hidden_states else None
all_attentions = () if output_attentions else None
attention_mask = self.get_attention_mask(attention_mask)
relative_pos = self.get_rel_pos(hidden_states, query_states, relative_pos)
if isinstance(hidden_states, Sequence):
next_kv = hidden_states[0]
else:
next_kv = hidden_states
rel_embeddings = self.get_rel_embedding()
for i, layer_module in enumerate(self.layer):
if output_hidden_states:
all_hidden_states = all_hidden_states + (hidden_states,)
layer_outputs = layer_module(
hidden_states=next_kv,
attention_mask=attention_mask,
query_states=query_states,
relative_pos=relative_pos,
rel_embeddings=rel_embeddings,
output_attentions=output_attentions,
training=training,
)
hidden_states = layer_outputs[0]
if query_states is not None:
query_states = hidden_states
if isinstance(hidden_states, Sequence):
next_kv = hidden_states[i + 1] if i + 1 < len(self.layer) else None
else:
next_kv = hidden_states
if output_attentions:
all_attentions = all_attentions + (layer_outputs[1],)
# Add last layer
if output_hidden_states:
all_hidden_states = all_hidden_states + (hidden_states,)
if not return_dict:
return tuple(v for v in [hidden_states, all_hidden_states, all_attentions] if v is not None)
return TFBaseModelOutput(
last_hidden_state=hidden_states, hidden_states=all_hidden_states, attentions=all_attentions
)
def build_relative_position(query_size, key_size):
"""
Build relative position according to the query and key
We assume the absolute position of query \\(P_q\\) is range from (0, query_size) and the absolute position of key
\\(P_k\\) is range from (0, key_size), The relative positions from query to key is \\(R_{q \\rightarrow k} = P_q -
P_k\\)
Args:
query_size (int): the length of query
key_size (int): the length of key
Return:
`tf.Tensor`: A tensor with shape [1, query_size, key_size]
"""
q_ids = tf.range(query_size, dtype=tf.int32)
k_ids = tf.range(key_size, dtype=tf.int32)
rel_pos_ids = q_ids[:, None] - tf.tile(tf.reshape(k_ids, [1, -1]), [query_size, 1])
rel_pos_ids = rel_pos_ids[:query_size, :]
rel_pos_ids = tf.expand_dims(rel_pos_ids, axis=0)
return tf.cast(rel_pos_ids, tf.int64)
def c2p_dynamic_expand(c2p_pos, query_layer, relative_pos):
shapes = [
shape_list(query_layer)[0],
shape_list(query_layer)[1],
shape_list(query_layer)[2],
shape_list(relative_pos)[-1],
]
return tf.broadcast_to(c2p_pos, shapes)
def p2c_dynamic_expand(c2p_pos, query_layer, key_layer):
shapes = [
shape_list(query_layer)[0],
shape_list(query_layer)[1],
shape_list(key_layer)[-2],
shape_list(key_layer)[-2],
]
return tf.broadcast_to(c2p_pos, shapes)
def pos_dynamic_expand(pos_index, p2c_att, key_layer):
shapes = shape_list(p2c_att)[:2] + [shape_list(pos_index)[-2], shape_list(key_layer)[-2]]
return tf.broadcast_to(pos_index, shapes)
def torch_gather(x, indices, gather_axis):
if gather_axis < 0:
gather_axis = tf.rank(x) + gather_axis
if gather_axis != tf.rank(x) - 1:
pre_roll = tf.rank(x) - 1 - gather_axis
permutation = tf.roll(tf.range(tf.rank(x)), pre_roll, axis=0)
x = tf.transpose(x, perm=permutation)
indices = tf.transpose(indices, perm=permutation)
else:
pre_roll = 0
flat_x = tf.reshape(x, (-1, tf.shape(x)[-1]))
flat_indices = tf.reshape(indices, (-1, tf.shape(indices)[-1]))
gathered = tf.gather(flat_x, flat_indices, batch_dims=1)
gathered = tf.reshape(gathered, tf.shape(indices))
if pre_roll != 0:
permutation = tf.roll(tf.range(tf.rank(x)), -pre_roll, axis=0)
gathered = tf.transpose(gathered, perm=permutation)
return gathered
class TFDebertaDisentangledSelfAttention(keras.layers.Layer):
"""
Disentangled self-attention module
Parameters:
config (`str`):
A model config class instance with the configuration to build a new model. The schema is similar to
*BertConfig*, for more details, please refer [`DebertaConfig`]
"""
def __init__(self, config: DebertaConfig, **kwargs):
super().__init__(**kwargs)
if config.hidden_size % config.num_attention_heads != 0:
raise ValueError(
f"The hidden size ({config.hidden_size}) is not a multiple of the number of attention "
f"heads ({config.num_attention_heads})"
)
self.num_attention_heads = config.num_attention_heads
self.attention_head_size = int(config.hidden_size / config.num_attention_heads)
self.all_head_size = self.num_attention_heads * self.attention_head_size
self.in_proj = keras.layers.Dense(
self.all_head_size * 3,
kernel_initializer=get_initializer(config.initializer_range),
name="in_proj",
use_bias=False,
)
self.pos_att_type = config.pos_att_type if config.pos_att_type is not None else []
self.relative_attention = getattr(config, "relative_attention", False)
self.talking_head = getattr(config, "talking_head", False)
if self.talking_head:
self.head_logits_proj = keras.layers.Dense(
self.num_attention_heads,
kernel_initializer=get_initializer(config.initializer_range),
name="head_logits_proj",
use_bias=False,
)
self.head_weights_proj = keras.layers.Dense(
self.num_attention_heads,
kernel_initializer=get_initializer(config.initializer_range),
name="head_weights_proj",
use_bias=False,
)
self.softmax = TFDebertaXSoftmax(axis=-1)
if self.relative_attention:
self.max_relative_positions = getattr(config, "max_relative_positions", -1)
if self.max_relative_positions < 1:
self.max_relative_positions = config.max_position_embeddings
self.pos_dropout = TFDebertaStableDropout(config.hidden_dropout_prob, name="pos_dropout")
if "c2p" in self.pos_att_type:
self.pos_proj = keras.layers.Dense(
self.all_head_size,
kernel_initializer=get_initializer(config.initializer_range),
name="pos_proj",
use_bias=False,
)
if "p2c" in self.pos_att_type:
self.pos_q_proj = keras.layers.Dense(
self.all_head_size, kernel_initializer=get_initializer(config.initializer_range), name="pos_q_proj"
)
self.dropout = TFDebertaStableDropout(config.attention_probs_dropout_prob, name="dropout")
self.config = config
def build(self, input_shape=None):
if self.built:
return
self.built = True
self.q_bias = self.add_weight(
name="q_bias", shape=(self.all_head_size), initializer=keras.initializers.Zeros()
)
self.v_bias = self.add_weight(
name="v_bias", shape=(self.all_head_size), initializer=keras.initializers.Zeros()
)
if getattr(self, "in_proj", None) is not None:
with tf.name_scope(self.in_proj.name):
self.in_proj.build([None, None, self.config.hidden_size])
if getattr(self, "dropout", None) is not None:
with tf.name_scope(self.dropout.name):
self.dropout.build(None)
if getattr(self, "head_logits_proj", None) is not None:
with tf.name_scope(self.head_logits_proj.name):
self.head_logits_proj.build(None)
if getattr(self, "head_weights_proj", None) is not None:
with tf.name_scope(self.head_weights_proj.name):
self.head_weights_proj.build(None)
if getattr(self, "pos_dropout", None) is not None:
with tf.name_scope(self.pos_dropout.name):
self.pos_dropout.build(None)
if getattr(self, "pos_proj", None) is not None:
with tf.name_scope(self.pos_proj.name):
self.pos_proj.build([self.config.hidden_size])
if getattr(self, "pos_q_proj", None) is not None:
with tf.name_scope(self.pos_q_proj.name):
self.pos_q_proj.build([self.config.hidden_size])
def transpose_for_scores(self, tensor: tf.Tensor) -> tf.Tensor:
shape = shape_list(tensor)[:-1] + [self.num_attention_heads, -1]
# Reshape from [batch_size, seq_length, all_head_size] to [batch_size, seq_length, num_attention_heads, attention_head_size]
tensor = tf.reshape(tensor=tensor, shape=shape)
# Transpose the tensor from [batch_size, seq_length, num_attention_heads, attention_head_size] to [batch_size, num_attention_heads, seq_length, attention_head_size]
return tf.transpose(tensor, perm=[0, 2, 1, 3])
def call(
self,
hidden_states: tf.Tensor,
attention_mask: tf.Tensor,
query_states: tf.Tensor = None,
relative_pos: tf.Tensor = None,
rel_embeddings: tf.Tensor = None,
output_attentions: bool = False,
training: bool = False,
) -> Tuple[tf.Tensor]:
"""
Call the module
Args:
hidden_states (`tf.Tensor`):
Input states to the module usually the output from previous layer, it will be the Q,K and V in
*Attention(Q,K,V)*
attention_mask (`tf.Tensor`):
An attention mask matrix of shape [*B*, *N*, *N*] where *B* is the batch size, *N* is the maximum
sequence length in which element [i,j] = *1* means the *i* th token in the input can attend to the *j*
th token.
return_att (`bool`, optional):
Whether return the attention matrix.
query_states (`tf.Tensor`, optional):
The *Q* state in *Attention(Q,K,V)*.
relative_pos (`tf.Tensor`):
The relative position encoding between the tokens in the sequence. It's of shape [*B*, *N*, *N*] with
values ranging in [*-max_relative_positions*, *max_relative_positions*].
rel_embeddings (`tf.Tensor`):
The embedding of relative distances. It's a tensor of shape [\\(2 \\times
\\text{max_relative_positions}\\), *hidden_size*].
"""
if query_states is None:
qp = self.in_proj(hidden_states) # .split(self.all_head_size, dim=-1)
query_layer, key_layer, value_layer = tf.split(
self.transpose_for_scores(qp), num_or_size_splits=3, axis=-1
)
else:
def linear(w, b, x):
out = tf.matmul(x, w, transpose_b=True)
if b is not None:
out += tf.transpose(b)
return out
ws = tf.split(
tf.transpose(self.in_proj.weight[0]), num_or_size_splits=self.num_attention_heads * 3, axis=0
)
qkvw = tf.TensorArray(dtype=tf.float32, size=3)
for k in tf.range(3):
qkvw_inside = tf.TensorArray(dtype=tf.float32, size=self.num_attention_heads)
for i in tf.range(self.num_attention_heads):
qkvw_inside = qkvw_inside.write(i, ws[i * 3 + k])
qkvw = qkvw.write(k, qkvw_inside.concat())
qkvb = [None] * 3
q = linear(qkvw[0], qkvb[0], query_states)
k = linear(qkvw[1], qkvb[1], hidden_states)
v = linear(qkvw[2], qkvb[2], hidden_states)
query_layer = self.transpose_for_scores(q)
key_layer = self.transpose_for_scores(k)
value_layer = self.transpose_for_scores(v)
query_layer = query_layer + self.transpose_for_scores(self.q_bias[None, None, :])
value_layer = value_layer + self.transpose_for_scores(self.v_bias[None, None, :])
rel_att = None
# Take the dot product between "query" and "key" to get the raw attention scores.
scale_factor = 1 + len(self.pos_att_type)
scale = math.sqrt(shape_list(query_layer)[-1] * scale_factor)
query_layer = query_layer / scale
attention_scores = tf.matmul(query_layer, tf.transpose(key_layer, [0, 1, 3, 2]))
if self.relative_attention:
rel_embeddings = self.pos_dropout(rel_embeddings, training=training)
rel_att = self.disentangled_att_bias(query_layer, key_layer, relative_pos, rel_embeddings, scale_factor)
if rel_att is not None:
attention_scores = attention_scores + rel_att
if self.talking_head:
attention_scores = tf.transpose(
self.head_logits_proj(tf.transpose(attention_scores, [0, 2, 3, 1])), [0, 3, 1, 2]
)
attention_probs = self.softmax(attention_scores, attention_mask)
attention_probs = self.dropout(attention_probs, training=training)
if self.talking_head:
attention_probs = tf.transpose(
self.head_weights_proj(tf.transpose(attention_probs, [0, 2, 3, 1])), [0, 3, 1, 2]
)
context_layer = tf.matmul(attention_probs, value_layer)
context_layer = tf.transpose(context_layer, [0, 2, 1, 3])
context_layer_shape = shape_list(context_layer)
# Set the final dimension here explicitly.
# Calling tf.reshape(context_layer, (*context_layer_shape[:-2], -1)) raises an error when executing
# the model in graph mode as context_layer is reshaped to (None, 7, None) and Dense layer in TFDebertaV2SelfOutput
# requires final input dimension to be defined
new_context_layer_shape = context_layer_shape[:-2] + [context_layer_shape[-2] * context_layer_shape[-1]]
context_layer = tf.reshape(context_layer, new_context_layer_shape)
outputs = (context_layer, attention_probs) if output_attentions else (context_layer,)
return outputs
def disentangled_att_bias(self, query_layer, key_layer, relative_pos, rel_embeddings, scale_factor):
if relative_pos is None:
q = shape_list(query_layer)[-2]
relative_pos = build_relative_position(q, shape_list(key_layer)[-2])
shape_list_pos = shape_list(relative_pos)
if len(shape_list_pos) == 2:
relative_pos = tf.expand_dims(tf.expand_dims(relative_pos, 0), 0)
elif len(shape_list_pos) == 3:
relative_pos = tf.expand_dims(relative_pos, 1)
# bxhxqxk
elif len(shape_list_pos) != 4:
raise ValueError(f"Relative position ids must be of dim 2 or 3 or 4. {len(shape_list_pos)}")
att_span = tf.cast(
tf.minimum(
tf.maximum(shape_list(query_layer)[-2], shape_list(key_layer)[-2]), self.max_relative_positions
),
tf.int64,
)
rel_embeddings = tf.expand_dims(
rel_embeddings[self.max_relative_positions - att_span : self.max_relative_positions + att_span, :], 0
)
score = 0
# content->position
if "c2p" in self.pos_att_type:
pos_key_layer = self.pos_proj(rel_embeddings)
pos_key_layer = self.transpose_for_scores(pos_key_layer)
c2p_att = tf.matmul(query_layer, tf.transpose(pos_key_layer, [0, 1, 3, 2]))
c2p_pos = tf.clip_by_value(relative_pos + att_span, 0, att_span * 2 - 1)
c2p_att = torch_gather(c2p_att, c2p_dynamic_expand(c2p_pos, query_layer, relative_pos), -1)
score += c2p_att
# position->content
if "p2c" in self.pos_att_type:
pos_query_layer = self.pos_q_proj(rel_embeddings)
pos_query_layer = self.transpose_for_scores(pos_query_layer)
pos_query_layer /= tf.math.sqrt(tf.cast(shape_list(pos_query_layer)[-1] * scale_factor, dtype=tf.float32))
if shape_list(query_layer)[-2] != shape_list(key_layer)[-2]:
r_pos = build_relative_position(shape_list(key_layer)[-2], shape_list(key_layer)[-2])
else:
r_pos = relative_pos
p2c_pos = tf.clip_by_value(-r_pos + att_span, 0, att_span * 2 - 1)
p2c_att = tf.matmul(key_layer, tf.transpose(pos_query_layer, [0, 1, 3, 2]))
p2c_att = tf.transpose(
torch_gather(p2c_att, p2c_dynamic_expand(p2c_pos, query_layer, key_layer), -1), [0, 1, 3, 2]
)
if shape_list(query_layer)[-2] != shape_list(key_layer)[-2]:
pos_index = tf.expand_dims(relative_pos[:, :, :, 0], -1)
p2c_att = torch_gather(p2c_att, pos_dynamic_expand(pos_index, p2c_att, key_layer), -2)
score += p2c_att
return score
class TFDebertaEmbeddings(keras.layers.Layer):
"""Construct the embeddings from word, position and token_type embeddings."""
def __init__(self, config, **kwargs):
super().__init__(**kwargs)
self.config = config
self.embedding_size = getattr(config, "embedding_size", config.hidden_size)
self.hidden_size = config.hidden_size
self.max_position_embeddings = config.max_position_embeddings
self.position_biased_input = getattr(config, "position_biased_input", True)
self.initializer_range = config.initializer_range
if self.embedding_size != config.hidden_size:
self.embed_proj = keras.layers.Dense(
config.hidden_size,
kernel_initializer=get_initializer(config.initializer_range),
name="embed_proj",
use_bias=False,
)
self.LayerNorm = keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm")
self.dropout = TFDebertaStableDropout(config.hidden_dropout_prob, name="dropout")
def build(self, input_shape=None):
with tf.name_scope("word_embeddings"):
self.weight = self.add_weight(
name="weight",
shape=[self.config.vocab_size, self.embedding_size],
initializer=get_initializer(self.initializer_range),
)
with tf.name_scope("token_type_embeddings"):
if self.config.type_vocab_size > 0:
self.token_type_embeddings = self.add_weight(
name="embeddings",
shape=[self.config.type_vocab_size, self.embedding_size],
initializer=get_initializer(self.initializer_range),
)
else:
self.token_type_embeddings = None
with tf.name_scope("position_embeddings"):
if self.position_biased_input:
self.position_embeddings = self.add_weight(
name="embeddings",
shape=[self.max_position_embeddings, self.hidden_size],
initializer=get_initializer(self.initializer_range),
)
else:
self.position_embeddings = None
if self.built:
return
self.built = True
if getattr(self, "LayerNorm", None) is not None:
with tf.name_scope(self.LayerNorm.name):
self.LayerNorm.build([None, None, self.config.hidden_size])
if getattr(self, "dropout", None) is not None:
with tf.name_scope(self.dropout.name):
self.dropout.build(None)
if getattr(self, "embed_proj", None) is not None:
with tf.name_scope(self.embed_proj.name):
self.embed_proj.build([None, None, self.embedding_size])
def call(
self,
input_ids: tf.Tensor = None,
position_ids: tf.Tensor = None,
token_type_ids: tf.Tensor = None,
inputs_embeds: tf.Tensor = None,
mask: tf.Tensor = None,
training: bool = False,
) -> tf.Tensor:
"""
Applies embedding based on inputs tensor.
Returns:
final_embeddings (`tf.Tensor`): output embedding tensor.
"""
if input_ids is None and inputs_embeds is None:
raise ValueError("Need to provide either `input_ids` or `input_embeds`.")
if input_ids is not None:
check_embeddings_within_bounds(input_ids, self.config.vocab_size)
inputs_embeds = tf.gather(params=self.weight, indices=input_ids)
input_shape = shape_list(inputs_embeds)[:-1]
if token_type_ids is None:
token_type_ids = tf.fill(dims=input_shape, value=0)
if position_ids is None:
position_ids = tf.expand_dims(tf.range(start=0, limit=input_shape[-1]), axis=0)
final_embeddings = inputs_embeds
if self.position_biased_input:
position_embeds = tf.gather(params=self.position_embeddings, indices=position_ids)
final_embeddings += position_embeds
if self.config.type_vocab_size > 0:
token_type_embeds = tf.gather(params=self.token_type_embeddings, indices=token_type_ids)
final_embeddings += token_type_embeds
if self.embedding_size != self.hidden_size:
final_embeddings = self.embed_proj(final_embeddings)
final_embeddings = self.LayerNorm(final_embeddings)
if mask is not None:
if len(shape_list(mask)) != len(shape_list(final_embeddings)):
if len(shape_list(mask)) == 4:
mask = tf.squeeze(tf.squeeze(mask, axis=1), axis=1)
mask = tf.cast(tf.expand_dims(mask, axis=2), tf.float32)
final_embeddings = final_embeddings * mask
final_embeddings = self.dropout(final_embeddings, training=training)
return final_embeddings
class TFDebertaPredictionHeadTransform(keras.layers.Layer):
def __init__(self, config: DebertaConfig, **kwargs):
super().__init__(**kwargs)
self.embedding_size = getattr(config, "embedding_size", config.hidden_size)
self.dense = keras.layers.Dense(
units=self.embedding_size,
kernel_initializer=get_initializer(config.initializer_range),
name="dense",
)
if isinstance(config.hidden_act, str):
self.transform_act_fn = get_tf_activation(config.hidden_act)
else:
self.transform_act_fn = config.hidden_act
self.LayerNorm = keras.layers.LayerNormalization(epsilon=config.layer_norm_eps, name="LayerNorm")
self.config = config
def call(self, hidden_states: tf.Tensor) -> tf.Tensor:
hidden_states = self.dense(inputs=hidden_states)
hidden_states = self.transform_act_fn(hidden_states)
hidden_states = self.LayerNorm(hidden_states)
return hidden_states
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "dense", None) is not None:
with tf.name_scope(self.dense.name):
self.dense.build([None, None, self.config.hidden_size])
if getattr(self, "LayerNorm", None) is not None:
with tf.name_scope(self.LayerNorm.name):
self.LayerNorm.build([None, None, self.embedding_size])
class TFDebertaLMPredictionHead(keras.layers.Layer):
def __init__(self, config: DebertaConfig, input_embeddings: keras.layers.Layer, **kwargs):
super().__init__(**kwargs)
self.config = config
self.embedding_size = getattr(config, "embedding_size", config.hidden_size)
self.transform = TFDebertaPredictionHeadTransform(config, name="transform")
# The output weights are the same as the input embeddings, but there is
# an output-only bias for each token.
self.input_embeddings = input_embeddings
def build(self, input_shape=None):
self.bias = self.add_weight(shape=(self.config.vocab_size,), initializer="zeros", trainable=True, name="bias")
if self.built:
return
self.built = True
if getattr(self, "transform", None) is not None:
with tf.name_scope(self.transform.name):
self.transform.build(None)
def get_output_embeddings(self) -> keras.layers.Layer:
return self.input_embeddings
def set_output_embeddings(self, value: tf.Variable):
self.input_embeddings.weight = value
self.input_embeddings.vocab_size = shape_list(value)[0]
def get_bias(self) -> Dict[str, tf.Variable]:
return {"bias": self.bias}
def set_bias(self, value: tf.Variable):
self.bias = value["bias"]
self.config.vocab_size = shape_list(value["bias"])[0]
def call(self, hidden_states: tf.Tensor) -> tf.Tensor:
hidden_states = self.transform(hidden_states=hidden_states)
seq_length = shape_list(hidden_states)[1]
hidden_states = tf.reshape(tensor=hidden_states, shape=[-1, self.embedding_size])
hidden_states = tf.matmul(a=hidden_states, b=self.input_embeddings.weight, transpose_b=True)
hidden_states = tf.reshape(tensor=hidden_states, shape=[-1, seq_length, self.config.vocab_size])
hidden_states = tf.nn.bias_add(value=hidden_states, bias=self.bias)
return hidden_states
class TFDebertaOnlyMLMHead(keras.layers.Layer):
def __init__(self, config: DebertaConfig, input_embeddings: keras.layers.Layer, **kwargs):
super().__init__(**kwargs)
self.predictions = TFDebertaLMPredictionHead(config, input_embeddings, name="predictions")
def call(self, sequence_output: tf.Tensor) -> tf.Tensor:
prediction_scores = self.predictions(hidden_states=sequence_output)
return prediction_scores
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "predictions", None) is not None:
with tf.name_scope(self.predictions.name):
self.predictions.build(None)
# @keras_serializable
class TFDebertaMainLayer(keras.layers.Layer):
config_class = DebertaConfig
def __init__(self, config: DebertaConfig, **kwargs):
super().__init__(**kwargs)
self.config = config
self.embeddings = TFDebertaEmbeddings(config, name="embeddings")
self.encoder = TFDebertaEncoder(config, name="encoder")
def get_input_embeddings(self) -> keras.layers.Layer:
return self.embeddings
def set_input_embeddings(self, value: tf.Variable):
self.embeddings.weight = value
self.embeddings.vocab_size = shape_list(value)[0]
def _prune_heads(self, heads_to_prune):
"""
Prunes heads of the model. heads_to_prune: dict of {layer_num: list of heads to prune in this layer} See base
class PreTrainedModel
"""
raise NotImplementedError
@unpack_inputs
def call(
self,
input_ids: TFModelInputType | None = None,
attention_mask: np.ndarray | tf.Tensor | None = None,
token_type_ids: np.ndarray | tf.Tensor | None = None,
position_ids: np.ndarray | tf.Tensor | None = None,
inputs_embeds: np.ndarray | tf.Tensor | None = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
training: bool = False,
) -> Union[TFBaseModelOutput, Tuple[tf.Tensor]]:
if input_ids is not None and inputs_embeds is not None:
raise ValueError("You cannot specify both input_ids and inputs_embeds at the same time")
elif input_ids is not None:
input_shape = shape_list(input_ids)
elif inputs_embeds is not None:
input_shape = shape_list(inputs_embeds)[:-1]
else:
raise ValueError("You have to specify either input_ids or inputs_embeds")
if attention_mask is None:
attention_mask = tf.fill(dims=input_shape, value=1)
if token_type_ids is None:
token_type_ids = tf.fill(dims=input_shape, value=0)
embedding_output = self.embeddings(
input_ids=input_ids,
position_ids=position_ids,
token_type_ids=token_type_ids,
inputs_embeds=inputs_embeds,
mask=attention_mask,
training=training,
)
encoder_outputs = self.encoder(
hidden_states=embedding_output,
attention_mask=attention_mask,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
training=training,
)
sequence_output = encoder_outputs[0]
if not return_dict:
return (sequence_output,) + encoder_outputs[1:]
return TFBaseModelOutput(
last_hidden_state=sequence_output,
hidden_states=encoder_outputs.hidden_states,
attentions=encoder_outputs.attentions,
)
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "embeddings", None) is not None:
with tf.name_scope(self.embeddings.name):
self.embeddings.build(None)
if getattr(self, "encoder", None) is not None:
with tf.name_scope(self.encoder.name):
self.encoder.build(None)
class TFDebertaPreTrainedModel(TFPreTrainedModel):
"""
An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained
models.
"""
config_class = DebertaConfig
base_model_prefix = "deberta"
DEBERTA_START_DOCSTRING = r"""
The DeBERTa model was proposed in [DeBERTa: Decoding-enhanced BERT with Disentangled
Attention](https://arxiv.org/abs/2006.03654) by Pengcheng He, Xiaodong Liu, Jianfeng Gao, Weizhu Chen. It's build
on top of BERT/RoBERTa with two improvements, i.e. disentangled attention and enhanced mask decoder. With those two
improvements, it out perform BERT/RoBERTa on a majority of tasks with 80GB pretraining data.
This model is also a [keras.Model](https://www.tensorflow.org/api_docs/python/tf/keras/Model) subclass. Use it
as a regular TF 2.0 Keras Model and refer to the TF 2.0 documentation for all matter related to general usage and
behavior.
<Tip>
TensorFlow models and layers in `transformers` accept two formats as input:
- having all inputs as keyword arguments (like PyTorch models), or
- having all inputs as a list, tuple or dict in the first positional argument.
The reason the second format is supported is that Keras methods prefer this format when passing inputs to models
and layers. Because of this support, when using methods like `model.fit()` things should "just work" for you - just
pass your inputs and labels in any format that `model.fit()` supports! If, however, you want to use the second
format outside of Keras methods like `fit()` and `predict()`, such as when creating your own layers or models with
the Keras `Functional` API, there are three possibilities you can use to gather all the input Tensors in the first
positional argument:
- a single Tensor with `input_ids` only and nothing else: `model(input_ids)`
- a list of varying length with one or several input Tensors IN THE ORDER given in the docstring:
`model([input_ids, attention_mask])` or `model([input_ids, attention_mask, token_type_ids])`
- a dictionary with one or several input Tensors associated to the input names given in the docstring:
`model({"input_ids": input_ids, "token_type_ids": token_type_ids})`
Note that when creating models and layers with
[subclassing](https://keras.io/guides/making_new_layers_and_models_via_subclassing/) then you don't need to worry
about any of this, as you can just pass inputs like you would to any other Python function!
</Tip>
Parameters:
config ([`DebertaConfig`]): Model configuration class with all the parameters of the model.
Initializing with a config file does not load the weights associated with the model, only the
configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights.
"""
DEBERTA_INPUTS_DOCSTRING = r"""
Args:
input_ids (`np.ndarray`, `tf.Tensor`, `List[tf.Tensor]` ``Dict[str, tf.Tensor]` or `Dict[str, np.ndarray]` and each example must have the shape `({0})`):
Indices of input sequence tokens in the vocabulary.
Indices can be obtained using [`AutoTokenizer`]. See [`PreTrainedTokenizer.encode`] and
[`PreTrainedTokenizer.__call__`] for details.
[What are input IDs?](../glossary#input-ids)
attention_mask (`np.ndarray` or `tf.Tensor` of shape `({0})`, *optional*):
Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`:
- 1 for tokens that are **not masked**,
- 0 for tokens that are **masked**.
[What are attention masks?](../glossary#attention-mask)
token_type_ids (`np.ndarray` or `tf.Tensor` of shape `({0})`, *optional*):
Segment token indices to indicate first and second portions of the inputs. Indices are selected in `[0,
1]`:
- 0 corresponds to a *sentence A* token,
- 1 corresponds to a *sentence B* token.
[What are token type IDs?](../glossary#token-type-ids)
position_ids (`np.ndarray` or `tf.Tensor` of shape `({0})`, *optional*):
Indices of positions of each input sequence tokens in the position embeddings. Selected in the range `[0,
config.max_position_embeddings - 1]`.
[What are position IDs?](../glossary#position-ids)
inputs_embeds (`np.ndarray` or `tf.Tensor` of shape `({0}, hidden_size)`, *optional*):
Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation. This
is useful if you want more control over how to convert *input_ids* indices into associated vectors than the
model's internal embedding lookup matrix.
output_attentions (`bool`, *optional*):
Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned
tensors for more detail.
output_hidden_states (`bool`, *optional*):
Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for
more detail.
return_dict (`bool`, *optional*):
Whether or not to return a [`~utils.ModelOutput``] instead of a plain tuple.
"""
@add_start_docstrings(
"The bare DeBERTa Model transformer outputting raw hidden-states without any specific head on top.",
DEBERTA_START_DOCSTRING,
)
class TFDebertaModel(TFDebertaPreTrainedModel):
def __init__(self, config: DebertaConfig, *inputs, **kwargs):
super().__init__(config, *inputs, **kwargs)
self.deberta = TFDebertaMainLayer(config, name="deberta")
@unpack_inputs
@add_start_docstrings_to_model_forward(DEBERTA_INPUTS_DOCSTRING.format("batch_size, sequence_length"))
@add_code_sample_docstrings(
checkpoint=_CHECKPOINT_FOR_DOC,
output_type=TFBaseModelOutput,
config_class=_CONFIG_FOR_DOC,
)
def call(
self,
input_ids: TFModelInputType | None = None,
attention_mask: np.ndarray | tf.Tensor | None = None,
token_type_ids: np.ndarray | tf.Tensor | None = None,
position_ids: np.ndarray | tf.Tensor | None = None,
inputs_embeds: np.ndarray | tf.Tensor | None = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
training: Optional[bool] = False,
) -> Union[TFBaseModelOutput, Tuple[tf.Tensor]]:
outputs = self.deberta(
input_ids=input_ids,
attention_mask=attention_mask,
token_type_ids=token_type_ids,
position_ids=position_ids,
inputs_embeds=inputs_embeds,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
training=training,
)
return outputs
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "deberta", None) is not None:
with tf.name_scope(self.deberta.name):
self.deberta.build(None)
@add_start_docstrings("""DeBERTa Model with a `language modeling` head on top.""", DEBERTA_START_DOCSTRING)
class TFDebertaForMaskedLM(TFDebertaPreTrainedModel, TFMaskedLanguageModelingLoss):
def __init__(self, config: DebertaConfig, *inputs, **kwargs):
super().__init__(config, *inputs, **kwargs)
if config.is_decoder:
logger.warning(
"If you want to use `TFDebertaForMaskedLM` make sure `config.is_decoder=False` for "
"bi-directional self-attention."
)
self.deberta = TFDebertaMainLayer(config, name="deberta")
self.mlm = TFDebertaOnlyMLMHead(config, input_embeddings=self.deberta.embeddings, name="cls")
def get_lm_head(self) -> keras.layers.Layer:
return self.mlm.predictions
@unpack_inputs
@add_start_docstrings_to_model_forward(DEBERTA_INPUTS_DOCSTRING.format("batch_size, sequence_length"))
@add_code_sample_docstrings(
checkpoint=_CHECKPOINT_FOR_DOC,
output_type=TFMaskedLMOutput,
config_class=_CONFIG_FOR_DOC,
)
def call(
self,
input_ids: TFModelInputType | None = None,
attention_mask: np.ndarray | tf.Tensor | None = None,
token_type_ids: np.ndarray | tf.Tensor | None = None,
position_ids: np.ndarray | tf.Tensor | None = None,
inputs_embeds: np.ndarray | tf.Tensor | None = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
labels: np.ndarray | tf.Tensor | None = None,
training: Optional[bool] = False,
) -> Union[TFMaskedLMOutput, Tuple[tf.Tensor]]:
r"""
labels (`tf.Tensor` or `np.ndarray` of shape `(batch_size, sequence_length)`, *optional*):
Labels for computing the masked language modeling loss. Indices should be in `[-100, 0, ...,
config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are ignored (masked), the
loss is only computed for the tokens with labels in `[0, ..., config.vocab_size]`
"""
outputs = self.deberta(
input_ids=input_ids,
attention_mask=attention_mask,
token_type_ids=token_type_ids,
position_ids=position_ids,
inputs_embeds=inputs_embeds,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
training=training,
)
sequence_output = outputs[0]
prediction_scores = self.mlm(sequence_output=sequence_output, training=training)
loss = None if labels is None else self.hf_compute_loss(labels=labels, logits=prediction_scores)
if not return_dict:
output = (prediction_scores,) + outputs[2:]
return ((loss,) + output) if loss is not None else output
return TFMaskedLMOutput(
loss=loss,
logits=prediction_scores,
hidden_states=outputs.hidden_states,
attentions=outputs.attentions,
)
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "deberta", None) is not None:
with tf.name_scope(self.deberta.name):
self.deberta.build(None)
if getattr(self, "mlm", None) is not None:
with tf.name_scope(self.mlm.name):
self.mlm.build(None)
@add_start_docstrings(
"""
DeBERTa Model transformer with a sequence classification/regression head on top (a linear layer on top of the
pooled output) e.g. for GLUE tasks.
""",
DEBERTA_START_DOCSTRING,
)
class TFDebertaForSequenceClassification(TFDebertaPreTrainedModel, TFSequenceClassificationLoss):
def __init__(self, config: DebertaConfig, *inputs, **kwargs):
super().__init__(config, *inputs, **kwargs)
self.num_labels = config.num_labels
self.deberta = TFDebertaMainLayer(config, name="deberta")
self.pooler = TFDebertaContextPooler(config, name="pooler")
drop_out = getattr(config, "cls_dropout", None)
drop_out = self.config.hidden_dropout_prob if drop_out is None else drop_out
self.dropout = TFDebertaStableDropout(drop_out, name="cls_dropout")
self.classifier = keras.layers.Dense(
units=config.num_labels,
kernel_initializer=get_initializer(config.initializer_range),
name="classifier",
)
self.output_dim = self.pooler.output_dim
@unpack_inputs
@add_start_docstrings_to_model_forward(DEBERTA_INPUTS_DOCSTRING.format("batch_size, sequence_length"))
@add_code_sample_docstrings(
checkpoint=_CHECKPOINT_FOR_DOC,
output_type=TFSequenceClassifierOutput,
config_class=_CONFIG_FOR_DOC,
)
def call(
self,
input_ids: TFModelInputType | None = None,
attention_mask: np.ndarray | tf.Tensor | None = None,
token_type_ids: np.ndarray | tf.Tensor | None = None,
position_ids: np.ndarray | tf.Tensor | None = None,
inputs_embeds: np.ndarray | tf.Tensor | None = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
labels: np.ndarray | tf.Tensor | None = None,
training: Optional[bool] = False,
) -> Union[TFSequenceClassifierOutput, Tuple[tf.Tensor]]:
r"""
labels (`tf.Tensor` or `np.ndarray` of shape `(batch_size,)`, *optional*):
Labels for computing the sequence classification/regression loss. Indices should be in `[0, ...,
config.num_labels - 1]`. If `config.num_labels == 1` a regression loss is computed (Mean-Square loss), If
`config.num_labels > 1` a classification loss is computed (Cross-Entropy).
"""
outputs = self.deberta(
input_ids=input_ids,
attention_mask=attention_mask,
token_type_ids=token_type_ids,
position_ids=position_ids,
inputs_embeds=inputs_embeds,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
training=training,
)
sequence_output = outputs[0]
pooled_output = self.pooler(sequence_output, training=training)
pooled_output = self.dropout(pooled_output, training=training)
logits = self.classifier(pooled_output)
loss = None if labels is None else self.hf_compute_loss(labels=labels, logits=logits)
if not return_dict:
output = (logits,) + outputs[1:]
return ((loss,) + output) if loss is not None else output
return TFSequenceClassifierOutput(
loss=loss,
logits=logits,
hidden_states=outputs.hidden_states,
attentions=outputs.attentions,
)
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "deberta", None) is not None:
with tf.name_scope(self.deberta.name):
self.deberta.build(None)
if getattr(self, "pooler", None) is not None:
with tf.name_scope(self.pooler.name):
self.pooler.build(None)
if getattr(self, "dropout", None) is not None:
with tf.name_scope(self.dropout.name):
self.dropout.build(None)
if getattr(self, "classifier", None) is not None:
with tf.name_scope(self.classifier.name):
self.classifier.build([None, None, self.output_dim])
@add_start_docstrings(
"""
DeBERTa Model with a token classification head on top (a linear layer on top of the hidden-states output) e.g. for
Named-Entity-Recognition (NER) tasks.
""",
DEBERTA_START_DOCSTRING,
)
class TFDebertaForTokenClassification(TFDebertaPreTrainedModel, TFTokenClassificationLoss):
def __init__(self, config: DebertaConfig, *inputs, **kwargs):
super().__init__(config, *inputs, **kwargs)
self.num_labels = config.num_labels
self.deberta = TFDebertaMainLayer(config, name="deberta")
self.dropout = keras.layers.Dropout(rate=config.hidden_dropout_prob)
self.classifier = keras.layers.Dense(
units=config.num_labels, kernel_initializer=get_initializer(config.initializer_range), name="classifier"
)
self.config = config
@unpack_inputs
@add_start_docstrings_to_model_forward(DEBERTA_INPUTS_DOCSTRING.format("batch_size, sequence_length"))
@add_code_sample_docstrings(
checkpoint=_CHECKPOINT_FOR_DOC,
output_type=TFTokenClassifierOutput,
config_class=_CONFIG_FOR_DOC,
)
def call(
self,
input_ids: TFModelInputType | None = None,
attention_mask: np.ndarray | tf.Tensor | None = None,
token_type_ids: np.ndarray | tf.Tensor | None = None,
position_ids: np.ndarray | tf.Tensor | None = None,
inputs_embeds: np.ndarray | tf.Tensor | None = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
labels: np.ndarray | tf.Tensor | None = None,
training: Optional[bool] = False,
) -> Union[TFTokenClassifierOutput, Tuple[tf.Tensor]]:
r"""
labels (`tf.Tensor` or `np.ndarray` of shape `(batch_size, sequence_length)`, *optional*):
Labels for computing the token classification loss. Indices should be in `[0, ..., config.num_labels - 1]`.
"""
outputs = self.deberta(
input_ids=input_ids,
attention_mask=attention_mask,
token_type_ids=token_type_ids,
position_ids=position_ids,
inputs_embeds=inputs_embeds,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
training=training,
)
sequence_output = outputs[0]
sequence_output = self.dropout(sequence_output, training=training)
logits = self.classifier(inputs=sequence_output)
loss = None if labels is None else self.hf_compute_loss(labels=labels, logits=logits)
if not return_dict:
output = (logits,) + outputs[1:]
return ((loss,) + output) if loss is not None else output
return TFTokenClassifierOutput(
loss=loss,
logits=logits,
hidden_states=outputs.hidden_states,
attentions=outputs.attentions,
)
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "deberta", None) is not None:
with tf.name_scope(self.deberta.name):
self.deberta.build(None)
if getattr(self, "classifier", None) is not None:
with tf.name_scope(self.classifier.name):
self.classifier.build([None, None, self.config.hidden_size])
@add_start_docstrings(
"""
DeBERTa Model with a span classification head on top for extractive question-answering tasks like SQuAD (a linear
layers on top of the hidden-states output to compute `span start logits` and `span end logits`).
""",
DEBERTA_START_DOCSTRING,
)
class TFDebertaForQuestionAnswering(TFDebertaPreTrainedModel, TFQuestionAnsweringLoss):
def __init__(self, config: DebertaConfig, *inputs, **kwargs):
super().__init__(config, *inputs, **kwargs)
self.num_labels = config.num_labels
self.deberta = TFDebertaMainLayer(config, name="deberta")
self.qa_outputs = keras.layers.Dense(
units=config.num_labels, kernel_initializer=get_initializer(config.initializer_range), name="qa_outputs"
)
self.config = config
@unpack_inputs
@add_start_docstrings_to_model_forward(DEBERTA_INPUTS_DOCSTRING.format("batch_size, sequence_length"))
@add_code_sample_docstrings(
checkpoint=_CHECKPOINT_FOR_DOC,
output_type=TFQuestionAnsweringModelOutput,
config_class=_CONFIG_FOR_DOC,
)
def call(
self,
input_ids: TFModelInputType | None = None,
attention_mask: np.ndarray | tf.Tensor | None = None,
token_type_ids: np.ndarray | tf.Tensor | None = None,
position_ids: np.ndarray | tf.Tensor | None = None,
inputs_embeds: np.ndarray | tf.Tensor | None = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
start_positions: np.ndarray | tf.Tensor | None = None,
end_positions: np.ndarray | tf.Tensor | None = None,
training: Optional[bool] = False,
) -> Union[TFQuestionAnsweringModelOutput, Tuple[tf.Tensor]]:
r"""
start_positions (`tf.Tensor` or `np.ndarray` of shape `(batch_size,)`, *optional*):
Labels for position (index) of the start of the labelled span for computing the token classification loss.
Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence
are not taken into account for computing the loss.
end_positions (`tf.Tensor` or `np.ndarray` of shape `(batch_size,)`, *optional*):
Labels for position (index) of the end of the labelled span for computing the token classification loss.
Positions are clamped to the length of the sequence (`sequence_length`). Position outside of the sequence
are not taken into account for computing the loss.
"""
outputs = self.deberta(
input_ids=input_ids,
attention_mask=attention_mask,
token_type_ids=token_type_ids,
position_ids=position_ids,
inputs_embeds=inputs_embeds,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
training=training,
)
sequence_output = outputs[0]
logits = self.qa_outputs(inputs=sequence_output)
start_logits, end_logits = tf.split(value=logits, num_or_size_splits=2, axis=-1)
start_logits = tf.squeeze(input=start_logits, axis=-1)
end_logits = tf.squeeze(input=end_logits, axis=-1)
loss = None
if start_positions is not None and end_positions is not None:
labels = {"start_position": start_positions}
labels["end_position"] = end_positions
loss = self.hf_compute_loss(labels=labels, logits=(start_logits, end_logits))
if not return_dict:
output = (start_logits, end_logits) + outputs[2:]
return ((loss,) + output) if loss is not None else output
return TFQuestionAnsweringModelOutput(
loss=loss,
start_logits=start_logits,
end_logits=end_logits,
hidden_states=outputs.hidden_states,
attentions=outputs.attentions,
)
def build(self, input_shape=None):
if self.built:
return
self.built = True
if getattr(self, "deberta", None) is not None:
with tf.name_scope(self.deberta.name):
self.deberta.build(None)
if getattr(self, "qa_outputs", None) is not None:
with tf.name_scope(self.qa_outputs.name):
self.qa_outputs.build([None, None, self.config.hidden_size])
| transformers/src/transformers/models/deberta/modeling_tf_deberta.py/0 | {
"file_path": "transformers/src/transformers/models/deberta/modeling_tf_deberta.py",
"repo_id": "transformers",
"token_count": 30749
} | 321 |
# coding=utf-8
# Copyright 2022 The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
""" PyTorch M-CTC-T model."""
import math
from typing import Optional, Tuple, Union
import torch
import torch.utils.checkpoint
from torch import nn
from ....activations import ACT2FN
from ....file_utils import add_code_sample_docstrings, add_start_docstrings, add_start_docstrings_to_model_forward
from ....integrations.deepspeed import is_deepspeed_zero3_enabled
from ....modeling_attn_mask_utils import _prepare_4d_attention_mask
from ....modeling_outputs import BaseModelOutput, CausalLMOutput
from ....modeling_utils import (
PreTrainedModel,
apply_chunking_to_forward,
find_pruneable_heads_and_indices,
prune_linear_layer,
)
from ....utils import logging
from .configuration_mctct import MCTCTConfig
logger = logging.get_logger(__name__)
_HIDDEN_STATES_START_POSITION = 1
_CONFIG_FOR_DOC = "MCTCTConfig"
# Base docstring
_CHECKPOINT_FOR_DOC = "speechbrain/m-ctc-t-large"
_EXPECTED_OUTPUT_SHAPE = [1, 195, 1536]
# CTC docstring
_CTC_EXPECTED_OUTPUT = '"Mr. Quilter is the apostle of the middle classes, and we\'re glad to welcome his gospel."'
_CTC_EXPECTED_LOSS = 1885.65
MCTCT_PRETRAINED_MODEL_ARCHIVE_LIST = [
"speechbrain/m-ctc-t-large",
# See all M-CTC-T models at https://huggingface.co/models?filter=mctct
]
class MCTCTConv1dSubsampler(nn.Module):
"""
Convolutional subsampler: a stack of 1D convolution (along temporal dimension) followed by non-linear activation
via gated linear units (https://arxiv.org/abs/1911.08460)
"""
def __init__(self, config):
super().__init__()
self.config = config
self.glu_dim = config.conv_glu_dim
self.dropout = nn.Dropout(config.conv_dropout)
self.num_layers = config.num_conv_layers
self.in_channels = config.input_feat_per_channel * config.input_channels
if self.num_layers > 1:
if config.conv_channels is None:
raise ValueError(
"Need to specify `conv_channels` configuration in `MCTCTConfig` to use multiple convolution"
" layers."
)
self.mid_channels = config.conv_channels
else:
self.mid_channels = None
self.out_channels = config.hidden_size * 2 # considering GLU halving
self.kernel_size = config.conv_kernel
self.stride = config.conv_stride
# NOTE: MCTCT by construction only uses one convolution kernel. I've made this flexible to allow for
# multiple layers of convolutions, but not sure if this model definition should just restrict it
# to one layer. This becomes especially relevant when considering the padding like line 1 of forward().
self.conv_layers = nn.ModuleList(
nn.Conv1d(
self.in_channels if i == 0 else self.mid_channels[i],
self.mid_channels[i] if i < self.num_layers - 1 else self.out_channels,
kernel_size=k,
stride=self.stride[i],
padding="valid",
)
for i, k in enumerate(self.kernel_size)
)
def forward(self, input_features):
# NOTE: in reference to the NOTE in __init__, right now it just calculates padding as if
# there will be just one conv layer.
padding = sum([size // 2 for size in self.kernel_size]) # (7, 7) -> (3, 3)
input_features = torch.nn.functional.pad(input_features, (0, 0, padding, padding), "constant", 0)
hidden_states = input_features.transpose(1, 2).contiguous() # -> Batch x Frame x Time
for conv in self.conv_layers:
hidden_states = conv(hidden_states)
hidden_states = nn.functional.glu(hidden_states, dim=self.glu_dim)
hidden_states = self.dropout(hidden_states)
hidden_states = hidden_states.transpose(1, 2).contiguous() # -> Batch x Time x Frame
return hidden_states
class MCTCTEmbeddings(nn.Module):
"""Construct the embeddings from word, position and token_type embeddings."""
def __init__(self, config):
super().__init__()
self.word_embeddings = nn.Embedding(config.vocab_size, config.hidden_size, padding_idx=config.pad_token_id)
self.position_embeddings = nn.Embedding(config.max_position_embeddings, config.hidden_size)
self.token_type_embeddings = nn.Embedding(config.type_vocab_size, config.hidden_size)
# self.LayerNorm is not snake-cased to stick with TensorFlow model variable name and be able to load
# any TensorFlow checkpoint file
# self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps)
self.LayerNorm = MCTCTLayerNorm()
self.dropout = nn.Dropout(config.hidden_dropout_prob)
# position_ids (1, len position emb) is contiguous in memory and exported when serialized
self.register_buffer(
"position_ids", torch.arange(config.max_position_embeddings).expand((1, -1)), persistent=False
)
self.register_buffer(
"token_type_ids",
torch.zeros(self.position_ids.size(), dtype=torch.long, device=self.position_ids.device),
persistent=False,
)
def forward(
self, input_features=None, token_type_ids=None, position_ids=None, inputs_embeds=None, past_key_values_length=0
):
input_shape = input_features.size() if input_features is not None else inputs_embeds.size()[:-1]
seq_length = input_shape[1]
if position_ids is None:
position_ids = self.position_ids[:, past_key_values_length : seq_length + past_key_values_length]
# Setting the token_type_ids to the registered buffer in constructor where it is all zeros, which usually occurs
# when its auto-generated, registered buffer helps users when tracing the model without passing token_type_ids, solves
# issue #5664
if token_type_ids is None:
if hasattr(self, "token_type_ids"):
buffered_token_type_ids = self.token_type_ids[:, :seq_length]
buffered_token_type_ids_expanded = buffered_token_type_ids.expand(input_shape[0], seq_length)
token_type_ids = buffered_token_type_ids_expanded
else:
token_type_ids = torch.zeros(input_shape, dtype=torch.long, device=self.position_ids.device)
if inputs_embeds is None:
inputs_embeds = self.word_embeddings(input_features)
token_type_embeddings = self.token_type_embeddings(token_type_ids)
embeddings = inputs_embeds + token_type_embeddings
embeddings = self.LayerNorm(embeddings)
embeddings = self.dropout(embeddings)
return embeddings
class MCTCTSelfAttention(nn.Module):
def __init__(self, config):
super().__init__()
if config.hidden_size % config.num_attention_heads != 0 and not hasattr(config, "embedding_size"):
raise ValueError(
f"The hidden size ({config.hidden_size}) is not a multiple of the number of attention "
f"heads ({config.num_attention_heads})"
)
self.num_attention_heads = config.num_attention_heads
self.attention_head_size = config.attention_head_dim
self.all_head_size = self.num_attention_heads * self.attention_head_size
self.query = nn.Linear(config.hidden_size, self.all_head_size, bias=False)
self.key = nn.Linear(config.hidden_size, self.all_head_size, bias=False)
self.value = nn.Linear(config.hidden_size, self.all_head_size, bias=False)
self.dropout = nn.Dropout(config.attention_probs_dropout_prob)
self.max_position_embeddings = config.max_position_embeddings
self.distance_embedding = nn.Embedding(2 * config.max_position_embeddings - 1, self.attention_head_size)
self.is_decoder = config.is_decoder
def transpose_for_scores(self, x):
new_x_shape = x.size()[:-1] + (self.num_attention_heads, self.attention_head_size)
x = x.view(*new_x_shape)
return x.permute(0, 2, 1, 3)
def reshape_fortran(self, x, shape):
if len(x.shape) > 0:
x = x.permute(*reversed(range(len(x.shape))))
return x.reshape(*reversed(shape)).permute(*reversed(range(len(shape))))
def relative_position_embedding_rotate(self, scores):
# NOTE: should re-evaluate whether this re-implementation was truly necessary
# or the reason why my complete re-haul worked was due to some other part
# of the code. Adding this and the reshape fortrain code seems very undesirable.
scores = scores.permute(0, 2, 3, 1) # e.g. [10, 1839, 14, 4]
batch, hidden_state, seq_len, heads = scores.shape
# e.g. [10, 1853, 14, 4]
scores = torch.cat((scores, torch.zeros((batch, seq_len, seq_len, heads), device=scores.device)), dim=1)
# e.g. [10, 25942, 1, 4]
scores = self.reshape_fortran(scores, [batch, (hidden_state + seq_len) * seq_len, 1, heads])
# e.g. [10, 25928, 1, 4]
scores = scores[:, : (seq_len + hidden_state - 1) * seq_len]
# e.g. [10, 1852, 14, 4]
scores = self.reshape_fortran(scores, [batch, hidden_state + seq_len - 1, seq_len, heads])
halfpoint = hidden_state // 2
scores = scores[:, halfpoint : halfpoint + seq_len].transpose(1, 2) # e.g. [10, 14, 14, 4]
return scores.permute(0, 3, 1, 2)
def forward(
self,
hidden_states,
attention_mask=None,
head_mask=None,
output_attentions=False,
):
mixed_query_layer = self.query(hidden_states)
mixed_query_layer = mixed_query_layer / math.sqrt(self.attention_head_size)
key_layer = self.transpose_for_scores(self.key(hidden_states))
value_layer = self.transpose_for_scores(self.value(hidden_states))
query_layer = self.transpose_for_scores(mixed_query_layer)
# Take the dot product between "query" and "key" to get the raw attention scores.
attention_scores = torch.matmul(query_layer, key_layer.transpose(-1, -2))
# relative key position embeddings
positional_embedding = self.distance_embedding.weight
relative_position_scores = torch.einsum("lh, bche -> bcle", positional_embedding, query_layer.transpose(2, 3))
relative_position_scores = self.relative_position_embedding_rotate(relative_position_scores)
attention_scores = attention_scores + relative_position_scores
if attention_mask is not None:
# Apply the attention mask is (precomputed for all layers in MCTCTModel forward() function)
attention_scores = attention_scores + attention_mask
# Normalize the attention scores to probabilities.
attention_probs = nn.functional.softmax(attention_scores, dim=-1)
# This is actually dropping out entire tokens to attend to, which might
# seem a bit unusual, but is taken from the original Transformer paper.
attention_probs = self.dropout(attention_probs)
# Mask heads if we want to
if head_mask is not None:
attention_probs = attention_probs * head_mask
context_layer = torch.matmul(attention_probs, value_layer)
context_layer = context_layer.permute(0, 2, 1, 3).flatten(start_dim=-2)
outputs = (context_layer, attention_probs) if output_attentions else (context_layer,)
return outputs
class MCTCTLayerNorm(nn.Module):
def __init__(self):
super().__init__()
self.singleton_weight = nn.Parameter(torch.ones(1))
self.singleton_bias = nn.Parameter(torch.zeros(1))
def forward(self, hidden_states):
return (hidden_states * self.singleton_weight) + self.singleton_bias
class MCTCTSelfOutput(nn.Module):
def __init__(self, config):
super().__init__()
self.config = config
self.dense = nn.Linear(config.hidden_size, config.hidden_size, bias=False)
self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps)
self.dropout = nn.Dropout(config.hidden_dropout_prob)
def forward(self, hidden_states, input_tensor):
hidden_states = self.dense(hidden_states)
hidden_states = self.dropout(hidden_states)
hidden_states = self.LayerNorm(hidden_states + input_tensor)
return hidden_states
class MCTCTAttention(nn.Module):
def __init__(self, config):
super().__init__()
self.self = MCTCTSelfAttention(config)
self.output = MCTCTSelfOutput(config)
self.pruned_heads = set()
def prune_heads(self, heads):
if len(heads) == 0:
return
heads, index = find_pruneable_heads_and_indices(
heads, self.self.num_attention_heads, self.self.attention_head_size, self.pruned_heads
)
# Prune linear layers
self.self.query = prune_linear_layer(self.self.query, index)
self.self.key = prune_linear_layer(self.self.key, index)
self.self.value = prune_linear_layer(self.self.value, index)
self.output.dense = prune_linear_layer(self.output.dense, index, dim=1)
# Update hyper params and store pruned heads
self.self.num_attention_heads = self.self.num_attention_heads - len(heads)
self.self.all_head_size = self.self.attention_head_size * self.self.num_attention_heads
self.pruned_heads = self.pruned_heads.union(heads)
def forward(
self,
hidden_states,
attention_mask=None,
head_mask=None,
output_attentions=False,
):
self_outputs = self.self(
hidden_states,
attention_mask,
head_mask,
output_attentions,
)
attention_output = self.output(self_outputs[0], hidden_states)
outputs = (attention_output,) + self_outputs[1:] # add attentions if we output them
return outputs
class MCTCTIntermediate(nn.Module):
def __init__(self, config):
super().__init__()
self.dense = nn.Linear(config.hidden_size, config.intermediate_size, bias=False)
if isinstance(config.hidden_act, str):
self.intermediate_act_fn = ACT2FN[config.hidden_act]
else:
self.intermediate_act_fn = config.hidden_act
def forward(self, hidden_states):
hidden_states = self.dense(hidden_states)
hidden_states = self.intermediate_act_fn(hidden_states)
return hidden_states
class MCTCTOutput(nn.Module):
def __init__(self, config):
super().__init__()
self.dense = nn.Linear(config.intermediate_size, config.hidden_size, bias=False)
self.LayerNorm = nn.LayerNorm(config.hidden_size, eps=config.layer_norm_eps)
self.dropout = nn.Dropout(config.hidden_dropout_prob)
def forward(self, hidden_states, input_tensor):
hidden_states = self.dense(hidden_states)
hidden_states = self.dropout(hidden_states)
hidden_states = self.LayerNorm(hidden_states + input_tensor)
return hidden_states
class MCTCTLayer(nn.Module):
def __init__(self, config: MCTCTConfig):
super().__init__()
self.seq_len_dim = 1
self.chunk_size_feed_forward = config.chunk_size_feed_forward
self.intermediate = MCTCTIntermediate(config)
self.attention = MCTCTAttention(config)
self.is_decoder = config.is_decoder
self.output = MCTCTOutput(config)
def forward(
self,
hidden_states,
attention_mask=None,
head_mask=None,
output_attentions=False,
):
self_attention_outputs = self.attention(
hidden_states, attention_mask, head_mask, output_attentions=output_attentions
)
attention_output = self_attention_outputs[0]
outputs = self_attention_outputs[1:] # add self attentions if we output attention weights
layer_output = apply_chunking_to_forward(
self.feed_forward_chunk, self.chunk_size_feed_forward, self.seq_len_dim, attention_output
)
outputs = (layer_output,) + outputs
return outputs
def feed_forward_chunk(self, attention_output):
intermediate_output = self.intermediate(attention_output)
layer_output = self.output(intermediate_output, attention_output)
return layer_output
class MCTCTPreTrainedModel(PreTrainedModel):
"""
An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained
models.
"""
config_class = MCTCTConfig
base_model_prefix = "mctct"
main_input_name = "input_features"
supports_gradient_checkpointing = True
def _init_weights(self, module):
"""Initialize the weights"""
std = self.config.initializer_range
if isinstance(module, nn.Linear):
# Slightly different from the TF version which uses truncated_normal for initialization
# cf https://github.com/pytorch/pytorch/pull/5617
module.weight.data.normal_(mean=0.0, std=std)
if module.bias is not None:
module.bias.data.zero_()
elif isinstance(module, nn.Embedding):
module.weight.data.normal_(mean=0.0, std=std)
if module.padding_idx is not None:
module.weight.data[module.padding_idx].zero_()
elif isinstance(module, nn.LayerNorm):
module.bias.data.zero_()
module.weight.data.fill_(1.0)
elif isinstance(module, MCTCTLayerNorm):
module.singleton_weight.data.fill_(1.0)
module.singleton_bias.data.zero_()
if isinstance(module, (nn.Linear, nn.Conv1d)):
module.weight.data.normal_(mean=0.0, std=std)
if module.bias is not None:
module.bias.data.zero_()
def _get_feat_extract_output_lengths(self, input_lengths: torch.LongTensor):
"""
Computes the output length of the convolutional layers
"""
dilation = 1
for _, kernel_sz, stride in zip(
range(self.config.num_conv_layers), self.config.conv_kernel, self.config.conv_stride
):
padding = kernel_sz // 2
input_lengths = input_lengths + 2 * padding - dilation * (kernel_sz - 1) - 1
input_lengths = torch.div(input_lengths, stride, rounding_mode="trunc") + 1
return input_lengths
def _get_feature_vector_attention_mask(self, feature_vector_length, attention_mask):
# generate creates 3D attention mask, because of the shape of input_features
# convert it to 2D if thats the case
if len(attention_mask.shape) > 2:
attention_mask = attention_mask[:, :, -1]
# subsampled_lengths = attention_mask.sum(-1)
subsampled_lengths = self._get_feat_extract_output_lengths(attention_mask.sum(-1))
bsz = attention_mask.size()[0]
attention_mask = torch.zeros(
(bsz, feature_vector_length), dtype=attention_mask.dtype, device=attention_mask.device
)
# these two operations makes sure that all values
# before the output lengths indices are attended to
attention_mask[(torch.arange(bsz, device=attention_mask.device), subsampled_lengths - 1)] = 1
attention_mask = attention_mask.flip([-1]).cumsum(-1).flip([-1]).long()
return attention_mask
MCTCT_START_DOCSTRING = r"""
This model is a PyTorch [torch.nn.Module](https://pytorch.org/docs/stable/nn.html#torch.nn.Module) sub-class. Use
it as a regular PyTorch Module and refer to the PyTorch documentation for all matter related to general usage and
behavior.
Parameters:
config ([`MCTCTConfig`]): Model configuration class with all the parameters of the model.
Initializing with a config file does not load the weights associated with the model, only the
configuration. Check out the [`~PreTrainedModel.from_pretrained`] method to load the model weights.
"""
MCTCT_INPUTS_DOCSTRING = r"""
Args:
input_features (`torch.LongTensor` of shape `({0})`):
Indices of input sequence tokens in the vocabulary.
Indices can be obtained using [`Wav2Vec2CTCTokenizer`]. See [`PreTrainedTokenizer.encode`] and
[`PreTrainedTokenizer.__call__`] for details.
[What are input IDs?](../glossary#input-ids)
attention_mask (`torch.FloatTensor` of shape `({0})`, *optional*):
Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`:
- 1 for tokens that are **not masked**,
- 0 for tokens that are **masked**.
[What are attention masks?](../glossary#attention-mask)
head_mask (`torch.FloatTensor` of shape `(num_heads,)` or `(num_layers, num_heads)`, *optional*):
Mask to nullify selected heads of the self-attention modules. Mask values selected in `[0, 1]`:
- 1 indicates the head is **not masked**,
- 0 indicates the head is **masked**.
output_attentions (`bool`, *optional*):
Whether or not to return the attentions tensors of all attention layers. See `attentions` under returned
tensors for more detail.
output_hidden_states (`bool`, *optional*):
Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors for
more detail.
return_dict (`bool`, *optional*):
Whether or not to return a [`~file_utils.ModelOutput`] instead of a plain tuple.
"""
class MCTCTEncoder(MCTCTPreTrainedModel):
def __init__(self, config: MCTCTConfig):
super().__init__(config)
self.hidden_dropout_prob = config.hidden_dropout_prob
self.layer_norm = MCTCTLayerNorm()
self.conv = MCTCTConv1dSubsampler(config)
self.layers = nn.ModuleList([MCTCTLayer(config) for _ in range(config.num_hidden_layers)])
self.gradient_checkpointing = False
def forward(
self,
input_features: torch.Tensor,
attention_mask: torch.Tensor,
head_mask: torch.Tensor,
output_attentions: bool = False,
output_hidden_states: bool = False,
return_dict: bool = True,
) -> Union[Tuple, BaseModelOutput]:
output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
output_hidden_states = (
output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
)
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
input_features = self.layer_norm(input_features)
inputs_embeds = self.conv(input_features)
# subsample attention mask if necessary
if attention_mask is not None:
attention_mask = self._get_feature_vector_attention_mask(inputs_embeds.shape[1], attention_mask)
hidden_states = nn.functional.dropout(inputs_embeds, p=self.hidden_dropout_prob, training=self.training)
# expand attention_mask
if attention_mask is not None:
# [bsz, seq_len] -> [bsz, 1, tgt_seq_len, src_seq_len]
attention_mask = _prepare_4d_attention_mask(attention_mask, inputs_embeds.dtype)
encoder_states = () if output_hidden_states else None
all_attentions = () if output_attentions else None
# check if head_mask has a correct number of layers specified if desired
if head_mask is not None:
if head_mask.size()[0] != len(self.layers):
raise ValueError(
f"The head_mask should be specified for {len(self.layers)} layers, "
f"but it is for {head_mask.size()[0]}."
)
deepspeed_zero3_is_enabled = is_deepspeed_zero3_enabled()
for idx, encoder_layer in enumerate(self.layers):
if output_hidden_states:
encoder_states = encoder_states + (hidden_states,)
# add LayerDrop (see https://arxiv.org/abs/1909.11556 for description)
dropout_probability = torch.rand([])
skip_the_layer = True if self.training and (dropout_probability < self.config.layerdrop) else False
if not skip_the_layer or deepspeed_zero3_is_enabled:
# under deepspeed zero3 all gpus must run in sync
if self.gradient_checkpointing and self.training:
layer_outputs = self._gradient_checkpointing_func(
encoder_layer.__call__,
hidden_states,
attention_mask,
(head_mask[idx] if head_mask is not None else None),
output_attentions,
)
else:
layer_outputs = encoder_layer(
hidden_states=hidden_states,
attention_mask=attention_mask,
output_attentions=output_attentions,
)
hidden_states = layer_outputs[0]
if skip_the_layer:
layer_outputs = (None, None)
if output_attentions:
all_attentions = all_attentions + (layer_outputs[1],)
if output_hidden_states:
encoder_states = encoder_states + (hidden_states,)
if not return_dict:
return tuple(v for v in [hidden_states, encoder_states, all_attentions] if v is not None)
return BaseModelOutput(
last_hidden_state=hidden_states, hidden_states=encoder_states, attentions=all_attentions
)
@add_start_docstrings(
"The bare M-CTC-T Model transformer outputting raw hidden-states without any specific head on top.",
MCTCT_START_DOCSTRING,
)
class MCTCTModel(MCTCTPreTrainedModel):
def __init__(self, config):
super().__init__(config)
self.config = config
self.encoder = MCTCTEncoder(config)
# Initialize weights and apply final processing
self.post_init()
@add_start_docstrings_to_model_forward(MCTCT_INPUTS_DOCSTRING.format("batch_size, sequence_length"))
@add_code_sample_docstrings(
checkpoint=_CHECKPOINT_FOR_DOC,
output_type=BaseModelOutput,
config_class=_CONFIG_FOR_DOC,
modality="audio",
expected_output=_EXPECTED_OUTPUT_SHAPE,
)
def forward(
self,
input_features: torch.Tensor,
attention_mask: Optional[torch.Tensor] = None,
head_mask: Optional[torch.Tensor] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
) -> Union[Tuple, BaseModelOutput]:
output_attentions = output_attentions if output_attentions is not None else self.config.output_attentions
output_hidden_states = (
output_hidden_states if output_hidden_states is not None else self.config.output_hidden_states
)
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
if input_features is None:
raise ValueError("You have to specify input_features.")
encoder_outputs = self.encoder(
input_features,
attention_mask=attention_mask,
head_mask=head_mask,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
)
sequence_output = encoder_outputs[0]
if not return_dict:
return (sequence_output,) + encoder_outputs[1:]
return BaseModelOutput(
last_hidden_state=sequence_output,
hidden_states=encoder_outputs.hidden_states,
attentions=encoder_outputs.attentions,
)
@add_start_docstrings(
"""MCTCT Model with a `language modeling` head on top for Connectionist Temporal Classification (CTC).""",
MCTCT_START_DOCSTRING,
)
class MCTCTForCTC(MCTCTPreTrainedModel):
def __init__(self, config):
super().__init__(config)
self.mctct = MCTCTModel(config)
if config.vocab_size is None:
raise ValueError(
f"You are trying to instantiate {self.__class__} with a configuration that "
"does not define the vocabulary size of the language model head. Please "
"instantiate the model as follows: `MCTCTForCTC.from_pretrained(..., vocab_size=vocab_size)`. "
"or define `vocab_size` of your model's configuration."
)
output_hidden_size = config.hidden_size
self.ctc_head = nn.Linear(output_hidden_size, config.vocab_size)
# Initialize weights and apply final processing
self.post_init()
@add_start_docstrings_to_model_forward(MCTCT_INPUTS_DOCSTRING)
@add_code_sample_docstrings(
checkpoint=_CHECKPOINT_FOR_DOC,
output_type=CausalLMOutput,
config_class=_CONFIG_FOR_DOC,
expected_output=_CTC_EXPECTED_OUTPUT,
expected_loss=_CTC_EXPECTED_LOSS,
)
def forward(
self,
input_features: torch.Tensor,
attention_mask: Optional[torch.Tensor] = None,
head_mask: Optional[torch.Tensor] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
labels: Optional[torch.LongTensor] = None,
) -> Union[Tuple, CausalLMOutput]:
r"""
labels (`torch.LongTensor` of shape `(batch_size, target_length)`, *optional*):
Labels for connectionist temporal classification. Note that `target_length` has to be smaller or equal to
the sequence length of the output logits. Indices are selected in `[-100, 0, ..., config.vocab_size - 1]`.
All labels set to `-100` are ignored (masked), the loss is only computed for labels in `[0, ...,
config.vocab_size - 1]`.
"""
return_dict = return_dict if return_dict is not None else self.config.use_return_dict
outputs = self.mctct(
input_features,
attention_mask=attention_mask,
head_mask=head_mask,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
)
hidden_states = outputs[0]
logits = self.ctc_head(hidden_states)
loss = None
if labels is not None:
if labels.max() >= self.config.vocab_size:
raise ValueError(f"Label values must be <= vocab_size: {self.config.vocab_size}")
# retrieve loss input_lengths from attention_mask
attention_mask = (
attention_mask
if attention_mask is not None
else torch.ones(input_features.shape[:-1], dtype=torch.long)
)
input_lengths = self._get_feat_extract_output_lengths(attention_mask.sum(-1)).to(torch.long)
# assuming that padded tokens are filled with -100
# when not being attended to
labels_mask = labels >= 0
target_lengths = labels_mask.sum(-1)
flattened_targets = labels.masked_select(labels_mask)
# ctc_loss doesn't support fp16
log_probs = nn.functional.log_softmax(logits, dim=-1, dtype=torch.float32).transpose(0, 1)
with torch.backends.cudnn.flags(enabled=False):
loss = nn.functional.ctc_loss(
log_probs,
flattened_targets,
input_lengths,
target_lengths,
blank=self.config.pad_token_id,
reduction=self.config.ctc_loss_reduction,
zero_infinity=self.config.ctc_zero_infinity,
)
if not return_dict:
output = (logits,) + outputs[_HIDDEN_STATES_START_POSITION:]
return ((loss,) + output) if loss is not None else output
return CausalLMOutput(
loss=loss, logits=logits, hidden_states=outputs.hidden_states, attentions=outputs.attentions
)
| transformers/src/transformers/models/deprecated/mctct/modeling_mctct.py/0 | {
"file_path": "transformers/src/transformers/models/deprecated/mctct/modeling_mctct.py",
"repo_id": "transformers",
"token_count": 14036
} | 322 |
Subsets and Splits
No saved queries yet
Save your SQL queries to embed, download, and access them later. Queries will appear here once saved.