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Representation of sets on mass storage devices for information retrieval systems

Published: 04 June 1973 Publication History

Abstract

Information retrieval systems utilizing Boolean operators to manipulate subsets of the data base require an efficient method of set representation. Commands in the user language permit the selection of subsets by retrieving occurrences in the data base that obey user specified conditions. Compound conditions may then be obtained by performing the traditional Boolean operators AND, OR, and NOT to selected subsets. Entries in the data base may be assigned identification numbers in order that the representations of subsets may be in the form of a set of positive identification numbers. Thus, the problem of manipulating large sets of occurrences reduces to one of efficiently representing subsets of positive integers.

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AFIPS '73: Proceedings of the June 4-8, 1973, national computer conference and exposition
June 1973
936 pages
ISBN:9781450379168
DOI:10.1145/1499586
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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  • AFIPS: American Federation of Information Processing Societies

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Association for Computing Machinery

New York, NY, United States

Publication History

Published: 04 June 1973

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