数据集:

lexlms/lex_files

中文

Dataset Card for "LexFiles"

Dataset Summary

The LeXFiles is a new diverse English multinational legal corpus that we created including 11 distinct sub-corpora that cover legislation and case law from 6 primarily English-speaking legal systems (EU, CoE, Canada, US, UK, India). The corpus contains approx. 19 billion tokens. In comparison, the "Pile of Law" corpus released by Hendersons et al. (2022) comprises 32 billion in total, where the majority (26/30) of sub-corpora come from the United States of America (USA), hence the corpus as a whole is biased towards the US legal system in general, and the federal or state jurisdiction in particular, to a significant extent.

Dataset Specifications

Corpus Corpus alias Documents Tokens Pct. Sampl. (a=0.5) Sampl. (a=0.2)
EU Legislation eu-legislation 93.7K 233.7M 1.2% 5.0% 8.0%
EU Court Decisions eu-court-cases 29.8K 178.5M 0.9% 4.3% 7.6%
ECtHR Decisions ecthr-cases 12.5K 78.5M 0.4% 2.9% 6.5%
UK Legislation uk-legislation 52.5K 143.6M 0.7% 3.9% 7.3%
UK Court Decisions uk-court-cases 47K 368.4M 1.9% 6.2% 8.8%
Indian Court Decisions indian-court-cases 34.8K 111.6M 0.6% 3.4% 6.9%
Canadian Legislation canadian-legislation 6K 33.5M 0.2% 1.9% 5.5%
Canadian Court Decisions canadian-court-cases 11.3K 33.1M 0.2% 1.8% 5.4%
U.S. Court Decisions [1] court-listener 4.6M 11.4B 59.2% 34.7% 17.5%
U.S. Legislation us-legislation 518 1.4B 7.4% 12.3% 11.5%
U.S. Contracts us-contracts 622K 5.3B 27.3% 23.6% 15.0%
Total lexlms/lex_files 5.8M 18.8B 100% 100% 100%

[1] We consider only U.S. Court Decisions from 1965 onwards (cf. post Civil Rights Act), as a hard threshold for cases relying on severely out-dated and in many cases harmful law standards. The rest of the corpora include more recent documents.

[2] Sampling (Sampl.) ratios are computed following the exponential sampling introduced by Lample et al. (2019).

Additional corpora not considered for pre-training, since they do not represent factual legal knowledge.

Corpus Corpus alias Documents Tokens
Legal web pages from C4 legal-c4 284K 340M

Citation

Ilias Chalkidis*, Nicolas Garneau*, Catalina E.C. Goanta, Daniel Martin Katz, and Anders Søgaard. LeXFiles and LegalLAMA: Facilitating English Multinational Legal Language Model Development. 2022. In the Proceedings of the 61th Annual Meeting of the Association for Computational Linguistics. Toronto, Canada.

@inproceedings{chalkidis-garneau-etal-2023-lexlms,
    title = {{LeXFiles and LegalLAMA: Facilitating English Multinational Legal Language Model Development}},
    author = "Chalkidis*, Ilias and 
              Garneau*, Nicolas and
              Goanta, Catalina and 
              Katz, Daniel Martin and 
              Søgaard, Anders",
    booktitle = "Proceedings of the 61st Annual Meeting of the Association for Computational Linguistics",
    month = june,
    year = "2023",
    address = "Toronto, Canada",
    publisher = "Association for Computational Linguistics",
    url = "https://arxiv.org/abs/2305.07507",
}