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Main Authors: Yamada, Hiroaki, Tokunaga, Takenobu, Ohara, Ryutaro, Tokutsu, Akira, Takeshita, Keisuke, Sumida, Mihoko
Format: Preprint
Published: 2023
Subjects:
Online Access:https://arxiv.org/abs/2312.00480
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author Yamada, Hiroaki
Tokunaga, Takenobu
Ohara, Ryutaro
Tokutsu, Akira
Takeshita, Keisuke
Sumida, Mihoko
author_facet Yamada, Hiroaki
Tokunaga, Takenobu
Ohara, Ryutaro
Tokutsu, Akira
Takeshita, Keisuke
Sumida, Mihoko
contents This paper presents the first dataset for Japanese Legal Judgment Prediction (LJP), the Japanese Tort-case Dataset (JTD), which features two tasks: tort prediction and its rationale extraction. The rationale extraction task identifies the court's accepting arguments from alleged arguments by plaintiffs and defendants, which is a novel task in the field. JTD is constructed based on annotated 3,477 Japanese Civil Code judgments by 41 legal experts, resulting in 7,978 instances with 59,697 of their alleged arguments from the involved parties. Our baseline experiments show the feasibility of the proposed two tasks, and our error analysis by legal experts identifies sources of errors and suggests future directions of the LJP research.
format Preprint
id arxiv_https___arxiv_org_abs_2312_00480
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Japanese Tort-case Dataset for Rationale-supported Legal Judgment Prediction
Yamada, Hiroaki
Tokunaga, Takenobu
Ohara, Ryutaro
Tokutsu, Akira
Takeshita, Keisuke
Sumida, Mihoko
Computation and Language
Artificial Intelligence
68T50
This paper presents the first dataset for Japanese Legal Judgment Prediction (LJP), the Japanese Tort-case Dataset (JTD), which features two tasks: tort prediction and its rationale extraction. The rationale extraction task identifies the court's accepting arguments from alleged arguments by plaintiffs and defendants, which is a novel task in the field. JTD is constructed based on annotated 3,477 Japanese Civil Code judgments by 41 legal experts, resulting in 7,978 instances with 59,697 of their alleged arguments from the involved parties. Our baseline experiments show the feasibility of the proposed two tasks, and our error analysis by legal experts identifies sources of errors and suggests future directions of the LJP research.
title Japanese Tort-case Dataset for Rationale-supported Legal Judgment Prediction
topic Computation and Language
Artificial Intelligence
68T50
url https://arxiv.org/abs/2312.00480