Definition and Extraction of Causal Relations for Question-Answering on Fault-Diagnosis of Electronic Devices

전자장비 고장진단 질의응답을 위한 인과관계 정의 및 추출

  • 이신목 (한국과학기술원 전산학과) ;
  • 신지애 (한국정보통신대학교 공학부)
  • Published : 2008.05.15

Abstract

Causal relations in ontology should be defined based on the inference types necessary to solve problems specific to application as well as domain. In this paper, we present a model to define and extract causal relations for application ontology for Question-Answering (QA) on fault-diagnosis of electronic devices. Causal categories are defined by analyzing generic patterns of QA application; the relations between concepts in the corpus belonging to the causal categories are defined as causal relations. Instances of casual relations are extracted using lexical patterns in the concept definitions of domain, and extended incrementally with information from thesaurus. On the evaluation by domain specialists, our model shows precision of 92.3% in classification of relations and precision of 80.7% in identifying causal relations at the extraction phase.

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