Event extraction for criminal legal text

  • Qingquan Li
  • , Qifan Zhang
  • , Junjie Yao*
  • , Yingjie Zhang
  • *Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

20 Scopus citations

Abstract

This paper concerns with the actual problems in the legal work. We apply event extraction technology to the case description part in the Chinese legal text. We define the event type, event argument and event argument role of the larceny case, and construct a larceny case event extraction dataset through data annotation. We divide event extraction into two steps: event trigger word and argument joint extraction and event argument role assignment. We use BERT to obtain Chinese character vectors, use the BiLSTM-CRF model for extraction at the first step, and combine additional features with the extraction results of the first step, then input them to the CRF model of the second step to obtain an improvement in extraction result. We display the extracted event information in time series to realize the litigation visualization. We format Chinese time expressions, sorts the event information in tine series, and develops a Web application to display the timeline of event information.

Original languageEnglish
Title of host publicationProceedings - 11th IEEE International Conference on Knowledge Graph, ICKG 2020
EditorsEnhong Chen, Grigoris Antoniou, Xindong Wu, Vipin Kumar
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages573-580
Number of pages8
ISBN (Electronic)9781728181561
DOIs
StatePublished - Aug 2020
Event11th IEEE International Conference on Knowledge Graph, ICKG 2020 - Virtual, Online, China
Duration: 9 Aug 202011 Aug 2020

Publication series

NameProceedings - 11th IEEE International Conference on Knowledge Graph, ICKG 2020

Conference

Conference11th IEEE International Conference on Knowledge Graph, ICKG 2020
Country/TerritoryChina
CityVirtual, Online
Period9/08/2011/08/20

Keywords

  • Chinese legal text
  • Event dataset construction
  • Event extraction
  • Litigation visualization

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