Ranking expansion terms using partial and ostensive evidence

Ian Ruthven, Mounia Lalmas, Keith van Rijsbergen, H. Bruce (Editor), R. Fidel (Editor), P. Ingwersen (Editor), P. Vakkari (Editor)

Research output: Contribution to conferencePaper

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Abstract

In this paper we examine the problem of ranking candidate expansion terms for query expansion. We show, by an extension to the traditional F4 scheme, how partial relevance assessments (how relevant a document is) and ostensive evidence (when a document was assessed relevant) can be incorporated into a term ranking function. We then investigate this new term ranking function in three user experiments, examining the performance of our function for automatic and interactive query expansion. We show that the new function not only suggests terms that are preferred by searchers but suggests terms that can lead to more use of expansion terms.
Original languageEnglish
Pages199-220
Number of pages21
Publication statusPublished - 21 Jul 2002
Event4th International Conference on Conceptions of Library and Information Science. CoLIS 4 - Seattle, USA
Duration: 21 Jul 200225 Jul 2002

Conference

Conference4th International Conference on Conceptions of Library and Information Science. CoLIS 4
CitySeattle, USA
Period21/07/0225/07/02

Keywords

  • expansion terms
  • query expansion
  • information retrieval
  • search algorithms

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