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---
license: apache-2.0
task_categories:
- text-generation
language:
- en
tags:
- data-juicer
- pretraining
size_categories:
- 1M<n<10M
---
# The Pile -- PubMed Central (refined by Data-Juicer)
A refined version of PubMed Central dataset in The Pile by [Data-Juicer](https://github.com/alibaba/data-juicer). Removing some "bad" samples from the original dataset to make it higher-quality.
This dataset is usually used to pretrain a Large Language Model.
**Notice**: Here is a small subset for previewing. The whole dataset is available [here](https://dail-wlcb.oss-cn-wulanchabu.aliyuncs.com/LLM_data/our_refined_datasets/pretraining/the-pile-pubmed-central-refine-result.jsonl) (About 83G).
## Dataset Information
- Number of samples: 2,694,860 (Keep ~86.96% from the original dataset)
## Refining Recipe
```yaml
# global parameters
project_name: 'Data-Juicer-recipes-pubmed-central'
dataset_path: '/path/to/your/dataset' # path to your dataset directory or file
export_path: '/path/to/your/dataset.jsonl'
np: 50 # number of subprocess to process your dataset
open_tracer: true
# process schedule
# a list of several process operators with their arguments
process:
- clean_email_mapper:
- clean_links_mapper:
- fix_unicode_mapper:
- punctuation_normalization_mapper:
- whitespace_normalization_mapper:
- alphanumeric_filter: # 89217
tokenization: false
min_ratio: 0.2787 # 3sigma
- average_line_length_filter: # for code
max_len: 1200 # < 3sigma (1478) -- 7410
- character_repetition_filter:
rep_len: 10
max_ratio: 0.3741 # 3sigma -- 65849
- flagged_words_filter:
lang: en
tokenization: true
max_ratio: 0.00195 # 3sigma -- 8305
- language_id_score_filter: # remove language filter
min_score: 0.5 # 272359
- maximum_line_length_filter: # for code
max_len: 7328 # remove 23808 samples
- perplexity_filter:
lang: en
max_ppl: 8000 # remove 173883 samples
- special_characters_filter:
max_ratio: 0.842 # remove 87661 samples
- text_length_filter:
max_len: 136028 # 3sigma -- 15118
- words_num_filter:
lang: en
tokenization: true
min_num: 20 # remove 176537 samples
max_num: 23305 # remove 15016 samples
- word_repetition_filter:
lang: en
tokenization: true
rep_len: 10
max_ratio: 0.5981 # 3sigma -- 93843
- document_simhash_deduplicator:
tokenization: space
window_size: 6
lowercase: true
ignore_pattern: '\p{P}'
num_blocks: 6
hamming_distance: 4
``` |