Document (#10562)

Author

Fieldhouse, M.
Hancock-Beaulieu, M.

Title

¬The changing face of OKAPI

Source

Library review. 43(1994) no.4, S.38-50

Year

1994

Abstract

Describes the OKAPI projects and OKAPI's development as an experimental online catalogue system over 10 years, first at the University of Westminster (formerly the Polytechnique of Central London) and subsequently at City University, London. The 1st OKAPI project in 1984 introduced 'best match' retrieval and focused on the user interface design. The 2nd investigated word stemming, spelling correction and cross reference tables as retrieval aids. A comparative study of 2 library catalogues was undertaken in 1987, while in 1988 query expansion and relevance feedback were introduced and evaluated by laboratory tests. In 1990 live evaluation of automatic query expansion was carried out and in 1993 subject enhancement of bibliographic records was investigated. The latest project has examined the design of a graphical user interface to support interactive query expansion. Discusses the research and evaluation of each project

Theme

OPAC
Suchoberflächen
Semantisches Umfeld in Indexierung u. Retrieval

Object

OKAPI

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4. Robertson, S.E.: OKAPI at TREC-3 (1995) 0.27

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5. Beaulieu, M.; Robertson, S.; Rasmussen, E.: Evaluating interactive systems in TREC (1996) 0.26

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