A formal treatment of missing & imprecise information

Authors:
J. Morrissey;C. J. Van Rijsbergen
Affiliations:
Department of Computer Science, University College Dublin, Blefield, Dublin 4., Ireland;Department of Computing Science, University of Glasgow, Lilybank Gardens, Glasgow G12 8QQ., Scotland
Venue:
SIGIR '87 Proceedings of the 10th annual international ACM SIGIR conference on Research and development in information retrieval
Year:
1987

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Abstract

Missing, non-applicable and imprecise values arise frequently in Office Information Systems. There is a need to treat them in a consistent and useful manner. This paper proposes a method and gives the precise semantics of the retrieval operations in a system where imprecision is allowed. It also suggests a way to handle the uncertainty introduced by imprecise data values.