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The Computer Journal 1967 10(1):29-37; doi:10.1093/comjnl/10.1.29
© 1967 by British Computer Society
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Current approaches to classification and clump-finding at the Cambridge Language Research Unit

K. Sparck Jones and D. Jackson *

Cambridge Language Research Unit, 20 Millington Road, Cambridge, UK

Computer programs for automatic classification are a desideratum in many fields. Work on suitable procedures for handling large bodies of object/property descriptions has been in progress at the Cambridge Language Research Unit for some years: this paper describes the current series of general-purpose programs which have been developed there, in which classes or "clumps" of objects are obtained, using a similarity matrix, by a simple iterative scan of the universe of objects, distributing them in such a way that an appropriate cohesion function is minimized. This actual clump-finding process is embedded in an overall package in which the information given by a classification is manipulated in a variety of ways. The current applications of the programs, especially for information retrieval, are described.


* Cambridge Language Research Unit, 20 Millington Road, Cambridge.


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