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Walker, S.: ¬The Okapi online catalogue research projects (1989)
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- Date
- 16. 8.1998 11:22:08
- Imprint
- London : Library Association
-
Walker, S.; Hancock-Beaulieu, M.: OKAPI at city : an evaluation facility for interactive IR (1991)
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- Imprint
- London : British Library
- Series
- British Library research report; 6056
-
Walker, S.; Jones, R.M.: Improving subject retrieval in online catalogues : T.1: Stemming, automatic spelling correction and cross-reference tables (1987)
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- Imprint
- London : British Library
- Series
- British Library research paper; 24
-
Walker, S.: Okapi : Evaluating and enhancing an experimental online catalog (1987)
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- Source
- Library trends. 35(1987), S.631-645
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Walker, S.: Ease of use in online catalogues : a plea for the user (1986)
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- Source
- Online public access to library files. Ed.: J. Kinsella
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Walker, S.: Improving subject access painlessly : recent work on the Okapi online catalogue projects (1988)
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- Source
- Program. 22(1988), S.21-31
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Walker, S.; DeVere, R.: Improving subject retrieval in online catalogues : T.2: Relevance feedback and query expansion (1990)
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- Imprint
- London : British Library
- Series
- British Library research paper; 72
-
Mitev, N.N.; Venner, G.M.; Walker, S.: Designing an online public access catalogue : OKAPI, a catalogue on a local area network (1985)
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- Imprint
- London : British Library
- Series
- Library and information research report; 39
-
Hancock-Beaulieu, M.; Walker, S.: ¬An evaluation of automatic query expansion in an online library catalogue (1992)
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- Abstract
- An automatic query expansion (AQE) facility in anonline catalogue was evaluated in an operational library setting. The OKAPI experimental system had other features including: ranked output 'best match' keyword searching, automatic stemming, spelling normalisation and cross referencing as well as relevance feedback. A combination of transaction log analysis, search replays, questionnaires and interviews was used for data collection. Findings show that contrary to previous results, AQE was beneficial in a substantial number of searches. Use intentions, the effectiveness of the 'best match' search and user interaction were identified as the main factors affecting the take-up of the query expansion facility
-
Walker, S.: Subject access in online catalogues (1991)
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- Imprint
- London : British Library
