sage-fredt5-large

Summary

The model corrects spelling and punctuation errors and typos by bringing all the words in the text to the norm of the Russian language. Corrector had been trained based on the model FRED-T5-large. An extensive dataset with “artificial” errors was taken as a training corpus: the corpus was assembled on the basis of the Russian-language Wikipedia and transcripts of Russian-language videos, then typos and spelling errors were automatically introduced into it using the library SAGE.

Public references

SAGE library announcement, DataFest 2023
Paper about synthetic error generation methods, Dialogue 2023
SAGE EACL 2024 paper

Examples

Input	Output
И не чсно прохожим в этот день непогожйи почему я веселый такйо	И не ясно прохожим в этот день непогожий, почему я веселый такой.
Каждй день воттак делой, и спена балеть нибудет. А вотак каждый день ниделай	Каждый день вот так делай и спина болеть не будет. А вот так каждый день не делай.
Основая цель мероприятия практическая отработка навыков по оказанию помощи гражданам, попавшим в ДТП а также повышение и совершенствование уровня профессиональной подготовки сотрудников МЧС при проведении аварийно-спасательных работ по ликвидации последствий дорожно-транспортных проишествий сокращение временных показателей реагирования.	Основная цель мероприятия — практическая отработка навыков по оказанию помощи гражданам, попавшим в ДТП, а также повышение и совершенствование уровня профессиональной подготовки сотрудников МЧС при проведении аварийно-спасательных работ по ликвидации последствий дорожно-транспортных происшествий, сокращение временных показателей реагирования

Metrics

Quality

Below are automatic metrics for determining the correctness of the spell checkers. We compare our solution with both open automatic spell checkers and the ChatGPT family of models on all four available datasets:

RUSpellRU: texts collected from (LiveJournal), with manually corrected typos and errors;
MultidomainGold: examples from 7 text sources, including the open web, news, social media, reviews, subtitles, policy documents and literary works;
MedSpellChecker: texts with errors from medical anamnesis;
GitHubTypoCorpusRu: spelling errors and typos in commits from GitHub;

RUSpellRU

Model	Pr. (spell)	Rec. (spell)	F1 (spell)	Pr. (punc)	Rec. (punc)	F1 (punc)	Pr. (case)	Rec. (case)	F1 (case)
sage-fredt5-large	57.3	68.0	62.2	86.7	46.1	60.2	92.1	67.8	78.1
sage-fredt5-large (ft)	88.4	80.9	84.5	88.2	85.3	86.8	95.5	94.0	94.7
sage-ai-service	90.3	86.3	88.2	90.3	86.6	88.4	95.2	95.9	95.6
gpt-3.5-turbo	33.6	58.5	42.7	85.9	64.6	73.7	84.9	73.9	79.0
gpt-4	54.9	76.7	64.0	84.0	82.3	83.2	91.5	90.2	90.9

MultidomainGold

Model	Pr. (spell)	Rec. (spell)	F1 (spell)	Pr. (punc)	Rec. (punc)	F1 (punc)	Pr. (case)	Rec. (case)	F1 (case)
sage-fredt5-large	43.4	49.7	46.3	21.8	21.3	21.6	58.8	23.9	34.0
sage-fredt5-large (ft)	80.3	75.1	77.6	69.0	66.5	67.7	78.6	80.0	79.3
sage-ai-service	81.6	77.7	79.6	70.2	67.5	68.8	80.5	80.5	80.5
gpt-3.5-turbo	18.8	48.1	27.1	42.0	31.8	36.2	47.1	51.3	49.1
gpt-4	25.4	68.0	37.0	57.8	54.3	56.0	54.0	67.5	60.0

MedSpellChecker

Model	Pr. (spell)	Rec. (spell)	F1 (spell)	Pr. (punc)	Rec. (punc)	F1 (punc)	Pr. (case)	Rec. (case)	F1 (case)
sage-fredt5-large	35.2	54.5	42.8	19.2	13.2	15.7	48.7	36.8	41.9
sage-fredt5-large (ft)	72.5	72.2	72.3	74.6	66.4	70.3	79.3	85.1	82.1
sage-ai-service	71.3	73.5	72.4	75.1	69.2	72.0	80.9	72.8	76.6
gpt-3.5-turbo	14.7	45.9	22.3	69.9	52.3	59.8	26.4	41.8	32.3
gpt-4	37.8	72.3	49.6	81.4	64.3	71.9	73.0	62.1	67.1

GitHubTypoCorpusRu

Model	Pr. (spell)	Rec. (spell)	F1 (spell)	Pr. (punc)	Rec. (punc)	F1 (punc)	Pr. (case)	Rec. (case)	F1 (case)
sage-fredt5-large	46.0	46.6	46.3	22.7	18.3	20.2	12.0	13.2	12.6
sage-fredt5-large (ft)	67.5	53.2	59.5	48.5	38.0	42.6	37.3	50.0	42.7
sage-ai-service	70.8	56.3	62.7	48.9	35.8	41.4	32.9	45.3	38.1
gpt-3.5-turbo	23.7	38.7	29.4	37.6	23.3	28.7	19.6	35.9	25.3
gpt-4	27.0	52.8	35.7	45.9	32.6	38.2	25.7	36.8	30.2

How to use

from transformers import AutoTokenizer, AutoModelForSeq2SeqLM

tokenizer = AutoTokenizer.from_pretrained("ai-forever/sage-fredt5-large")
model = AutoModelForSeq2SeqLM.from_pretrained("ai-forever/sage-fredt5-large", device_map='cuda')

sentence = "И не чсно прохожим в этот день непогожйи почему я веселый такйо"
inputs = tokenizer(sentence, max_length=None, padding="longest", truncation=False, return_tensors="pt")
outputs = model.generate(**inputs.to(model.device), max_length = inputs["input_ids"].size(1) * 1.5)
print(tokenizer.batch_decode(outputs, skip_special_tokens=True))

# ["И не ясно прохожим в этот день непогожий, почему я весёлый такой?"]

Limitations

The model is intended to be fine-tuned on sets with natural errors for better performance. The realized model is a pre-train and pre-train task is different from the usual spell checking in terms of density of the noise in a corpus and its origin;
Complex formatting may cause some trouble in output generation.

Resources

SAGE library, GitHub
sage-fredt5-large, HuggingFace
sage-fredt5-distilled-95m, HuggingFace
sage-m2m100-1.2B, HuggingFace
sage-mt5-large, HuggingFace

License

Model FRED-T5-large, on the basis of which our solution is made, and its source code are supplied under the MIT license. Our solution comes with MIT license also.

Specifications

File size: 3.3 Gb;
Framework: pytorch
Version: v1.0
Developer: SberDevices, AGI NLP

Contacts

[email protected]

ai-forever
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sage-fredt5-large