A model for a weighted retrieval system

Duncan A. Buell and Donald H. Kraft

Journal of the American Society for Information Science, 1981, vol. 32, issue 3, 211-216

Abstract: There has been a good deal of work on information retrieval systems that have continuous weights assigned to the index terms that describe the records in the database, and/or to the query terms that describe the user queries. Recent articles have analyzed retrieval systems with continuous weights of either type and/or with a Boolean structure for the queries. They have also suggested criteria which such systems ought to satisfy and record evaluation mechanisms which partially satisfy these criteria. We offer a more careful analysis, based on a generalization of the discrete weights. We also look at the weights from an entirely different approach involving thresholds, and we generate an improved evaluation mechanism which seems to fulfill a larger subset of the desired criteria than previous mechanisms. This new mechanism allows the user to attach a “threshold” to the query term.

Date: 1981
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Persistent link: https://EconPapers.repec.org/RePEc:bla:jamest:v:32:y:1981:i:3:p:211-216

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