| アイテムタイプ |
会議発表論文 / Conference Paper(1) |
| 公開日 |
2025-05-21 |
| タイトル |
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タイトル |
Law Retrieval with Supervised Contrastive Learning Using the Hierarchical Structure of Law |
| 言語 |
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|
言語 |
eng |
| 資源タイプ |
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資源タイプ |
conference paper |
| アクセス権 |
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アクセス権 |
open access |
| 著者 |
Choi, Jungmin
Honda, Ukyo
渡辺, 太郎
Inui, Kentaro
大内, 啓樹
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| 抄録 |
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内容記述タイプ |
Abstract |
|
内容記述 |
We study the information retrieval task to identify the relevant law articles for a query on a legal issue in when the legal system in question is statute law. In recent years, the mainstream approach has been to calculate the similarity between the query and each article using pre-trained language models. However, such methods have a weakness in retrieving relevant articles that have low n-gram similarity scores with the query. In this work, we show that in such hard cases, the articles tend to be of the same class as articles with high n-gram similarity scores in the hierarchical structure of statute law, for instance, the Japanese Civil Code. From this observation, we hypothesize that by making articles of same class close to each other in the feature space, we could make it easier to retrieve the above mentioned hard articles. Our proposed method realizes this by supervised contrastive learning using the hierarchical structure. Experimental results show that the proposed method achieves higher performance in retrieving the correct articles with low n-gram similarity to the query. |
| 書誌情報 |
en : Proceedings of the 36th Pacific Asia Conference on Language, Information and Computation
p. 590-599,
発行日 2022-10-20
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| 会議情報 |
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会議名 |
The 36th Pacific Asia Conference on Language, Information and Computation |
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開始年 |
2022 |
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開始月 |
10 |
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開始日 |
20 |
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終了年 |
2022 |
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終了月 |
10 |
|
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終了日 |
22 |
|
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開催地 |
Manila, Philippines |
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開催国 |
PHL |
| 出版者 |
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出版者 |
Association for Computational Linguistics |
| ISSN |
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収録物識別子タイプ |
EISSN |
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収録物識別子 |
2619-7782 |
| 出版者版URI |
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関連タイプ |
isReplacedBy |
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|
識別子タイプ |
URI |
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関連識別子 |
https://aclanthology.org/2022.paclic-1.65/ |
| 権利 |
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|
権利情報Resource |
https://creativecommons.org/licenses/by/4.0/ |
|
権利情報 |
$00A9 2022 PACLIC 36 (2022) Organizing Committee and PACLIC Steering Committee. |
| 著者版フラグ |
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|
出版タイプ |
NA |
