Answer Pattern for Definitional Question-Answering System

정의형 질의응답 시스템을 위한 정답 패턴

  • 서영훈 (충북대학교 전기전자컴퓨터공학부) ;
  • 신승은 (충북대학교 전기전자컴퓨터공학부)
  • Published : 2005.06.01

Abstract

In this paper, we describe the answer pattern for definitional question-answering system. The .answer extraction method of a definitional question-answering system is different from the general answer extraction method because it presents the descriptive answer for a definitional question. The definitional answer extraction using the definitional answer pattern can extract the definitional answer correctly without the semantic analysis. The definitional answer pattern is consist of answer pattern, conditional rule and priority to extract the correct definitional answer. We extract the answer pattern from the definitional training corpus and determine the optimum conditional rule using F-measure. Next, we determine the priority of answer patterns using precision and syntactic structure. Our experiments show that our approach results in the precision(0.8207), the recall(0.9268) and the F-measure(0.8705). It means that our approach can be used efficiently for a definitional question-answering system.

Keywords

Question-Answering System;Definitional Answer Extraction;Answer Pattern;Conditional Rule