תמונות העטיפה

Evaluation of Advanced Retrieval Techniques in an Experimental Online Catalog

שמור ב:
הוצא לאור ב:Journal of the American Society for Information Science (1986-1998) vol. 43, no. 1 (Jan 1992), p. 34-53
מחבר ראשי: Larson, Ray R
יצא לאור:
Wiley Periodicals Inc.
נושאים:
Okapi British Library Library of Congress Online Computer Library Center > OCLC
Science
Information retrieval
Information overload
Thesauri
Subject heading schemes
Research & development > R&D
Keywords
Library of Congress Subject Headings
Library catalogs
Library associations
Retrieval performance measures
Search strategies
Query expansion
Search methods
Academic libraries
Boolean algebra
On-line systems
Relevance feedback
Bibliographic records
Catalogs
Information science
Databases
Information systems
Boolean
Queries
Documents
Internet
Data mining
Research
Archives & records
Retrieval
Access
גישה מקוונת:Citation/Abstract
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Resumen:Research on the use and users of online catalogs con ducted in the early 1980s found that subject searches were the most common form of online catalog search. At the same time, many of the problems experienced by online catalog users have been traced to difficulties with the subject access mechanisms of the online cata log. Numerous proposals have been made for methods intended to improve subject access to online catalog records. These commonly involve enhancing the cata log's bibliographic records with additional terms, or in corporating subject authority files or additional thesauri in the database. Another stream of research has con centrated on applying retrieval techniques derived from information retrieval (IR) research to replace the Boolean search methods of conventional online catalog systems. This study describes the results of retrieval tests using a variety of these search methods in the CHESHIRE experimental online catalog system.
ISSN:0002-8231
1097-4571
Fuente:ABI/INFORM Global