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Using Subject Headings for Online Retrieval" is an indispensable tool for online system designers who are grappling with developing new systems or refining existing ones. This ready reference describes subject analysis and subject searching in online catalogs, including the limitations of retrieval, and demonstrates how such limitations can be overcome through system design and programming. The practical reference also describes the Library of Congress Subject Headings (LCSH) system and system characteristics; it shows how information is stored in machine-readable files; and it offers...

Provides the strategies for developing a valid subject heading structure in an online public access catalogue that relies on the machine-readable Library of Congress subject headings. The book is aimed at cataloguing specialists wishing to relate local solutions to the broader movement of information technology that aims to improve subject access to technical and scholarly material. Major issues of online authorities are raised: functions of a subject authority file; integration of LCSH-MR records into the local authority file; and accessibility of the multiple-subject heading arrays directed...