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A Statutory Article Retrieval Dataset in French

2021-08-26ACL 2022Code Available1· sign in to hype

Antoine Louis, Gerasimos Spanakis

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Abstract

Statutory article retrieval is the task of automatically retrieving law articles relevant to a legal question. While recent advances in natural language processing have sparked considerable interest in many legal tasks, statutory article retrieval remains primarily untouched due to the scarcity of large-scale and high-quality annotated datasets. To address this bottleneck, we introduce the Belgian Statutory Article Retrieval Dataset (BSARD), which consists of 1,100+ French native legal questions labeled by experienced jurists with relevant articles from a corpus of 22,600+ Belgian law articles. Using BSARD, we benchmark several state-of-the-art retrieval approaches, including lexical and dense architectures, both in zero-shot and supervised setups. We find that fine-tuned dense retrieval models significantly outperform other systems. Our best performing baseline achieves 74.8% R@100, which is promising for the feasibility of the task and indicates there is still room for improvement. By the specificity of the domain and addressed task, BSARD presents a unique challenge problem for future research on legal information retrieval. Our dataset and source code are publicly available.

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Benchmark Results

DatasetModelMetricClaimedVerifiedStatus
BSARDTwo-tower Bi-Encoder (RoBERTa)Recall@10074.78Unverified
BSARDSiamese Bi-Encoder (RoBERTa)Recall@10071.63Unverified
BSARDBM25Recall@10051.33Unverified

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