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USING PROBABILISTIC MODELS OF DOCUMENT RETRIEVAL WITHOUT RELEVANCE INFORMATION

W.B. CROFT (Department of Computer and Information Science, University of Massachusetts, Amherst)
D.J. HARPER (Computer Laboratory, University of Cambridge)

Journal of Documentation

ISSN: 0022-0418

Article publication date: 1 April 1979

Abstract

Most probabilistic retrieval models incorporate information about the occurrence of index terms in relevant and non‐relevant documents. In this paper we consider the situation where no relevance information is available, that is, at the start of the search. Based on a probabilistic model, strategies are proposed for the initial search and an intermediate search. Retrieval experiments with the Cranfield collection of 1,400 documents show that this initial search strategy is better than conventional search strategies both in terms of retrieval effectiveness and in terms of the number of queries that retrieve relevant documents. The intermediate search is shown to be a useful substitute for a relevance feedback search. Experiments with queries that do not retrieve relevant documents at high rank positions indicate that a cluster search would be an effective alternative strategy.

Citation

CROFT, W.B. and HARPER, D.J. (1979), "USING PROBABILISTIC MODELS OF DOCUMENT RETRIEVAL WITHOUT RELEVANCE INFORMATION", Journal of Documentation, Vol. 35 No. 4, pp. 285-295. https://doi.org/10.1108/eb026683

Publisher

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MCB UP Ltd

Copyright © 1979, MCB UP Limited