Search (9 results, page 1 of 1)

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Abstract

Library users continue to experience difficulty in using the online catalog, particularly in the area of subject access. This project describes a test of a new design for subject access to online catalogs. The new design requires a wide range of subject searching capabilities and search trees to govern the system's selection of searching capabilities in response to user queries. Is the performance of search trees superior to subject searching approaches chosen at random? This project is geared to make that determination

Source

Library hi tech. 12(1994) no.1, S.67-76,86

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Abstract

Search trees are sets of paths with branches or choices that enable systems to carry out the most sensible search approaches at each stage of searches. Report results of a research project, undertaken at Michigan University, which aimed to identify characteristics of the most difficult user queries and recommend enhancements to the new subject searching design to enable it to produce useful retrievals in response to the wide variety of queries users pose to online catalogues. Online catalogues governed by search trees are more effective than the users themselves in selecting subject searching approaches and the enhanced search trees described and tested enlist subject searching approaches that are not typical of the functionality of operational online catalogues. Concludes that design and development is required to upgrade existing online catalogues with search trees and new subject searching functionality to be successful in responding with useful retrievals to the most difficult user queries

Source

Library hi tech. 14(1996) no.1, S.87-109

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Abstract

This article describes the findings of a research project that tested a new subject-access design in an experimental online catalog that had a wide range of subject-searching capabilities and search trees to govern the system's selection of searching capabilities in response to user queries. Library users at 2 academic libraries searched this experimental catalog for topics of their own choosing, judges the usefulness of retrieved titles, and answered post-search questions about their searching experiences. Mixed results from a quantitative analysis (i.e., precision scores) were supplemented with the more conclusive results from a qualitative analysis (i.e., failure analysis). Overall, analyses demonstrated that the new subject-access design that featured search trees was more effective in selecting a subject-searching approach that would prooduce useful information for the subjects users seek than users would select on their own. The qualitative analysis was especially helpful in providing recommendations for improving specific subject-searching approaches to increase their effenciency, increase user perseverance, and encourage browsing. It also suggested enhancements to the new subject-searching design to enable systems to respond to the wide variety of user queries for subjects

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Footnote

Rez. in: Library and information science research 18(1996) no.1, S.87-89 (C.A. Hert), Library resources and technical services 41(1997) no.1, S.60-67 (B.H. Weinberg)

Imprint

Ann Arbor, Mich : School of Information and Library Studies, University of Michigan

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Abstract

Reports an empirical study of online catalogues accessible over the Internet and discusses the problems revealed in subject searching them. Suggests 4 tools to improve subject searching: search trees, an online directory of collections strengths of Internet accessible library collections, aids to find this record or simular records, and common command language for every Internet accessible library catalogue or bibliographic database

Imprint

Illinois : University at Urbana-Champaign, Graduate School of Library and Information Science

Source

Emerging communities: integrating networked information into library services. Proceedings of the Clinic on Library Applications of Data Processing, Illinois University at Urbana-Champaign, 4-6 April 1993. Ed.: A.P. Bishop

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Footnote

Rez. in: Library resources and technical services 41(1997) no.1, S.60-67 (B.H. Weinberg)

Imprint

Ann Arbor, Mich : School of Information and Library Studies, University of Michigan

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Source

Library hi tech. 8(1990) no.3, S.7-20

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Abstract

This paper recognizes the limitations of the existing file of Library of Congress authority records for subject heading assignment and validation. It makes recommendations for a new machine-readable file of authority records for topical subdivisions and for enhancements to the existing subject authority file. The recommended changes qould enable online systems to assist in subject heading formulation and verify, with limited assistance by human intermediaries, the individual components of subdivided headings. A study of subdivided subject headings in a large bibliographic database forms the basis of the recommendations

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Source

Library resources and technical services. 40(1996) no.2, S.113-132