Query-drift prevention for robust query expansion

  • Authors:
  • Liron Zighelnic;Oren Kurland

  • Affiliations:
  • Technion - Israel Institute of Technology, Haifa, Israel;Technion - Israel Institute of Technology, Haifa, Israel

  • Venue:
  • Proceedings of the 31st annual international ACM SIGIR conference on Research and development in information retrieval
  • Year:
  • 2008

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Abstract

Pseudo-feedback-based automatic query expansion yields effective retrieval performance on average, but results in performance inferior to that of using the original query for many information needs. We address an important cause of this robustness issue, namely, the query drift problem, by fusing the results retrieved in response to the original query and to its expanded form. Our approach posts performance that is significantly better than that of retrieval based only on the original query and more robust than that of retrieval using the expanded query.