Answering definition questions using web knowledge bases

  • Authors:
  • Zhushuo Zhang;Yaqian Zhou;Xuanjing Huang;Lide Wu

  • Affiliations:
  • Department of Computer Science and Engineering, Fudan University, Shanghai, China;Department of Computer Science and Engineering, Fudan University, Shanghai, China;Department of Computer Science and Engineering, Fudan University, Shanghai, China;Department of Computer Science and Engineering, Fudan University, Shanghai, China

  • Venue:
  • IJCNLP'05 Proceedings of the Second international joint conference on Natural Language Processing
  • Year:
  • 2005

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Abstract

This paper presents a definition question answering approach, which is capable of mining textual definitions from large collections of documents. In order to automatically identify definition sentences from a large collection of documents, we utilize the existing definitions in the Web knowledge bases instead of hand-crafted rules or annotated corpus. Effective methods are adopted to make full use of Web knowledge bases, and they promise high quality response to definition questions. We applied our system in the TREC 2004 definition question-answering task and achieved an encouraging performance with the F-measure score of 0.404, which was ranked second among all the submitted runs.