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Similar case calculation method based on criminal behavior chain

A calculation method and a similarity calculation technology, applied in the fields of natural language processing and machine learning

Inactive Publication Date: 2020-10-23
GUIZHOU UNIV
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for calculating similar cases based on criminal behavior chains. The present invention is oriented to judicial judgment documents, starting from the case description part, and researching similar cases calculation methods based on criminal behavior chains. From multiple angles of text content information, it solves the problem of calculating similar cases based on criminal behavior chains, and effectively solves the above-mentioned problems

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  • Similar case calculation method based on criminal behavior chain
  • Similar case calculation method based on criminal behavior chain
  • Similar case calculation method based on criminal behavior chain

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Embodiment 1

[0017] Embodiment 1: as attached Figure 1~3 As shown, a similar case calculation method based on criminal behavior chains, the method includes the following steps: Step 1: extract relevant information from the case description part of the judgment document, use Bert+Crf as the model of sequence labeling, and perform key Information extraction, and finally construct a criminal behavior chain; Step 2: Based on the structural characteristics of the criminal behavior chain, use the graph neural network model as the basic calculation model to realize the similarity calculation of the criminal behavior chain; Step 3: Use the graph neural network model to obtain The result is combined with the text content information to realize the similarity calculation method based on the criminal behavior chain to find similar cases. The results can be used to support the push of similar cases in auxiliary trial applications.

[0018] In step 1, keywords are extracted according to the constitue...

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Abstract

The invention discloses a similar case calculation method based on a criminal behavior chain, and the method comprises the following steps: 1, extracting related information from a case description part of a judgment document, employing Bert + Crf as a sequence labeling model, carrying out the extraction of key information, and finally constructing the criminal behavior chain; 2, based on the structural features of the criminal behavior chain, adopting a graph neural network model as a basic calculation model to realize similarity calculation of the criminal behavior chain; and 3, combining aresult obtained by the graph neural network model with the text content information to realize finding of similar cases by a crime behavior chain-based similarity calculation method. According to theinvention, the characteristics of a criminal behavior chain are fully utilized, a deeper calculation method is provided for traditional similar case searching, the similarity between similar cases isimproved, technical support is provided for pushing of class cases, and a very good effect is achieved.

Description

technical field [0001] The invention relates to a method for calculating cases, in particular to a method for calculating similar cases based on criminal behavior chains, and belongs to the technical fields of natural language processing and machine learning. Background technique [0002] At present, the courts have accumulated a large number of judicial judgment documents in the long-term judicial practice. Judicial judgment documents have typical characteristics such as strong professionalism, many technical terms, rigorous logical relationships, and obvious chronological relationships. Judgment documents contain huge value. After analyzing the judgment documents, we found that the description of the case has a significant relationship with the trial results of the case, the results of similar cases, and the results of the applicable laws. However, the order of the characteristics of the case is easy to be ignored, especially when it involves cases with the same characteris...

Claims

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Application Information

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IPC IPC(8): G06F16/332G06F16/35G06N3/04G06N3/08G06Q50/18
CPCG06F16/3329G06F16/35G06N3/08G06Q50/18G06N3/045
Inventor 陈艳平孙倩秦永彬黄瑞章唐向红
Owner GUIZHOU UNIV
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