Threshold values and Boolean retrieval systems |
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Authors: | Duncan A Buell Donald H Kraft |
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Institution: | Department of Computer Science, Louisiana State University, Baton Rouge, LA 70803, U.S.A. |
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Abstract: | Several papers have appeared that have analyzed recent developments in the problem of processing, in a document retrieval system, queries expressed as Boolean expressions. The purpose of this paper is to continue that analysis. We shall show that the concept of threshold values resolves the problems inherent with relevance weights. Moreover, we shall explore possible evaluation mechanisms for retrieval of documents, based on fuzzy-set-theoretic considerations. |
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