A Study of Precedent Retrieval System for Civil Trial

  • Yuya KiryuEmail author
  • Atsushi Ito
  • Takehiko Kasahara
  • Hiroyuki Hatano
  • Masahiro Fujii
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10672)


Recently, ICT has been adopted for use by the judiciaries in many countries such as Singapore and India, in response to the global changes in the economy and politics. It is urgently necessary for Japanese judiciary to adopt ICT to catch up with the global trend. For example, since almost all judicial records are stored as printed material, it is difficult to access them. Recently, limited number of record are opened on web site. UI for retrieving is not well designed for ordinary people. For example, they cannot search precedents with thing in action and what to prove to win.

In this paper, to solve this problem, we propose an intelligent precedent retrieval system that uses ontology. It allows users to find precedents with thing in action and similarity of documents. Also, it suggests appropriate laws and what to prove. In other words, our system can support user’s prosecution.


Cyber court High tech court Legal document XML Ontology Semantic web Civil trial Precedent retrieval system 



We express special thanks to Mr. Furumoto, attorney of law, who provides a lot of useful information and suggestions to proceed this research. We also express special thanks to all people who joined the Cyber Court Project.


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Copyright information

© Springer International Publishing AG 2018

Authors and Affiliations

  • Yuya Kiryu
    • 1
    Email author
  • Atsushi Ito
    • 1
  • Takehiko Kasahara
    • 2
  • Hiroyuki Hatano
    • 1
  • Masahiro Fujii
    • 1
  1. 1.Information System Science Department, Graduate School of EngineeringUtsunomiya UniversityTochigiJapan
  2. 2.Toin University of YokohamaYokohama-shiJapan

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