Document (#31573)

Author

Carlyle, A.

Title

Matching LCSH and user vocabulary in the library catalog

Source

Cataloging and classification quarterly. 10(1989) nos.1/2, S.37-63

Year

1989

Abstract

Central to subject searching is the match between user vocabulary and the headings from Library of Congress Subject-Headings (LCSH) used in a library catalog. This paper evaluates previous matching studies, proposes a detailed list of matching categories, and tests LCSH in a study using these categories. Exact and partial match categories are defined for single LCSH and multiple LCSH matches to user expressions. One no-match category is included. Transaction logs from ORION, UCLA's online Information system, were used to collect user expressions for a comparison of LCSH and user language. Results show that single LCSH headings match user expressions exactly about 47% of the time; that single subject heading matches, including exact matches, comprise 74% of the total; that partial matches, to both single and multiple headings, comprise about 21% of the total; and that no match occurs 5% of the time.

Footnote

Simultaneously published as Subject Control in Online Catalogs

Theme

OPAC

Object

LCSH

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5. Chaplan, M.A.: Mapping Laborline Thesaurus terms to Library of Congress Subject Headings : implications for vocabulary switching (1995) 0.36

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