Invention Grant
- Patent Title: Clause analysis based on collection coherence in legal domain
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Application No.: US16144534Application Date: 2018-09-27
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Publication No.: US10915710B2Publication Date: 2021-02-09
- Inventor: Zhili Guo , HongLei Guo , Song Xu , Shiwan Zhao , Elaine M. Branagh , Pitipong Jun Sen Lin , Zhong Su
- Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Applicant Address: US NY Armonk
- Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee Address: US NY Armonk
- Agency: Tutunjian & Bitetto, P.C.
- Agent Joseph Petrokaitis
- Main IPC: G06F40/30
- IPC: G06F40/30 ; G06Q50/18 ; G06F16/901

Abstract:
A method is provided for clause analysis in a legal domain. The method builds a coherence graph from a set of labeled training documents by (a) creating entity nodes from and of a same type as entities extracted from the set of labeled training documents, (b) creating clause nodes from labeled clauses in the set of labeled training documents, (c) forming bi-directional edges (i) between each of the clause nodes and the entity nodes belonging thereto, (ii) among parent-child clause nodes from among the clause nodes, and (iii) among same-level sibling clause nodes from among the clause nodes. The method merges nodes, from among the entity and clause nodes, that have a same semantic meaning. The method weights the bi-directional edges using a coherence metric. The method identifies a clause structure of a new document by matching the new document against the coherence graph using a node-covering algorithm.
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