UCLA-Okapi at TREC-2: Query Expansion Experiments

نویسندگان

  • Efthimis N. Efthimiadis
  • Paul V. Biron
چکیده

This is the rst participation of the Graduate School of Library and Information Science, University of California at Los Angeles in the TREC Conference. For TREC{2, Category B, UCLA used a version of the Okapi text retrieval system that was made available to UCLA by City University, London, UK. OKAPI has been described in TREC1 (Robertson, Walker, Hancock-Beaulieu, Gull & Lau, 1993a) as well as in this conference (Robertson, Walker, Jones, Hancock-Beaulieu, & Gatford, 1994). Okapi is a simple set-oriented system based on a generalized probabilistic model with facilities for relevance feedback. In addition OKAPI supports a full range of deterministic Boolean and quasi-Boolean operations.

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تاریخ انتشار 1993