A utility-theoretic analysis of expected search length

Authors:
P. Bollmann;V. V. Raghavan
Affiliations:
Technische Universität Berlin, Fachbercich Informatik, FR 5-11, Franklinstrassc 28/29, D-1000 Berlin 10;The Center for Advanced Computer Studies, University of Southwestern Louisiana, Lafayette, LA
Venue:
SIGIR '88 Proceedings of the 11th annual international ACM SIGIR conference on Research and development in information retrieval
Year:
1988

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Abstract

In this paper the expected search length, which is a measure of retrieval system performance, is investigated from the viewpoint of axiomatic utility theory. Necessary and sufficient criteria for the expected search length to be an ordinal scale and sufficient criteria that it is a ratio scale are given.