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Question Answering Based on Answer Trustworthiness

  • Hyo-Jung Oh
  • Chung-Hee Lee
  • Yeo-Chan Yoon
  • Myung-Gil Jang
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5839)

Abstract

Nowadays, we are faced with finding “trustworthy” answers not only “relevant” answers. This paper proposes a QA model based on answer trustworthiness. Contrary to the past researches which focused simple trust factors of a document, we identified three different answer trustworthiness factors: 1) incorporating document quality at the document layer; 2) representing the authority and reputation of answer sources at the answer source layer; 3) verifying the answers by consulting various QA systems at the sub-QAs layer. In our experiments, the proposed method using all answer trustworthiness factors shows improvement: 237% (0.150 to 0.506 MRR) for answering effectiveness and 92% (28,993 to 2,293 min.) for indexing efficiency.

Keywords

Question answering answer trustworthiness document quality 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Hyo-Jung Oh
    • 1
  • Chung-Hee Lee
    • 1
  • Yeo-Chan Yoon
    • 1
  • Myung-Gil Jang
    • 1
  1. 1.Electronics and Telecommunications Research Institute (ETRI)DaejeonKorea

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