Using combination of evidence for term expansion

  • Authors:
  • Ross Wilkinson

  • Affiliations:
  • Department of Computer Science, Royal Melbourne Institute of Technology, Melbourne, Australia

  • Venue:
  • IRSG'97 Proceedings of the 19th Annual BCS-IRSG conference on Information Retrieval Research
  • Year:
  • 1997

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Abstract

Expanding a user query automatically with terms taken from documents that are most similar to the query is a reliable way of finding more relevant documents. To date most approaches to this problem have focused on modifying the query. In this paper we argue that it is useful to create a new query from similar documents, rank both the user query and the new query, and combine the evidence. We show that there are both theoretic and practical advantages in this process.