Search (27 results, page 1 of 2)

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LCSH

Machine / readable bibliographic data
Subject cataloging / Data processing
Indexing / Data processing

Subject

Machine / readable bibliographic data
Subject cataloging / Data processing
Indexing / Data processing

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Source

CD data report. 3(1987) no.10, S.21-24

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Abstract

The Experimental Library System project investigated methods of integrating a bibliographic/full text retrieval system with a relational data base management system for use with OPACs (on-line public access catalogues).

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Abstract

2nd of two articles based on the results of a survey of on-line public access catalogues (OPACs) in public libraries carried out by Manchester Library School. 20 UK libraries provided data for the survey. Discusses types of OPAC configurations in use, suppliers of systems, help facilities, display of data, and subject searching on OPACs. Concludes that, in general, OPACs make accessing a catalogue easy and that this encourages catalogue use, resulting in increased document demand levels and in more satisfied customers.

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Abstract

An experimental online catalog was developed that provided searchers with several different subject searching strategies. Analyses of retrieval test data suggest that searchers expect alphabetical searches to provide lists of assigned subject headings conceptually related to their topics of interest. System designers can now respond to their expectation by incorporating LCSH-mr in online catalogs

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Abstract

Reports the results of a survey of on-line public access catalogue applications in UK public libraries. Tables present data on: public libraries with operational OPACs in 1987; forms of catalogues in use; planned OPACs; access points and record formats available

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Abstract

Authority control is discussed from two viewpoints: The need for bibliographic records relating to a name to be brought together under one form of the name; and the need for cross references to direct a user to a heading from variant forms of the name. Data from two research projects that support the need for choosing one form of name are summarized. The author's study of user requests that resulted in no "hits" in an online catalog is described. Data are given to show that for only 6.4% of these requests would our current methods of cross referencing in authority records have been helpful, and that two system programs would have given much greater assistance.

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Abstract

In Northern Germany, the State of Lower Saxony has developed an online library network, the center of which is the Library Computer Center at the State and University Library in Goettingen. This center offers the following data bases online: the union catalogue of serials in Lower Saxony libraries; the union catalogue of books since 1977 in these libraries; the IBZ and IBR; the last two years of the Deutsche Bibliographie, the British National Bibliography and, within the next few months, the titles offered by the Library of Congress (all in full service); then all new titles in this data base will be compatible to MARC II.

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Source

Program. 22(1988), S.21-31

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Source

Program. 22(1988), S.133-142

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Abstract

There have been several studies on the distribution of index terms, title terms, authors, and other elements employed in searching bibliographic databases. What is needed is to relate this information to the actual selection of terms for searching. This study analyzes data taken from monitoring the actual selection of terms for searching an online catalog at the School of Library and Information Science at the University of Western Ontario. Every time a term was employed in a search expression, a count in the dictionary file was updated. If the word was not in the dictionary, it was added. As a check on other studies, the rank distribution of terms chosen for searching was fit and found to be of a general Bradford-Zipf type. The main hypothesis was that high frequency terms in the catalog are the ones most frequently chosen in searches. The regular scatterplot of number of postings in the catalog versus the frequency in searching was checked and Pearson's correlation and Spearman's rank correlation coefficients were calculated. These data show that in general searchers actually tend to select the terms with a high number of postings for searching the catalog

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Abstract

The proliferation of online public access catalogs (OPACs) requires some systematic rationale for the comparative evaluation of their designs. Considered as an indexing application, the OPAC can be analyzed by three features: the variety of bibliographic data processed, the kinds of indexes constructed, and the ways in which the indexes are searched. No one configuration appiles to every library research project with equal efficacy or likelihood of satisfying queries. However, the rationale proposed can compare and evaluate alternative library computer catalogs in term of the library's understanding of the relationship between the library's collections and their use

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Abstract

A browsable display under a specific search term can often frustrate users if the display is carried over several screens. This article investigates methods of compressing headings identified by MARC subfield codes to reduce the size of browsable displays. Arguments are presented that a more efficient system design can be achieved by machine sorting of subdivisions via a conceptual, rather than alphabetical, approach. The author concludes that system architecture for browsable subject index displays must be redesigned to relieve the user of the burden of data organization

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Abstract

Reports a 1-day seminar which was organized by the Library Association Technology Group, Birmingham, 21 Mar 89. The following topics were presented: intelligent interfaces to online-data bases; knowledge-based abstracting; an expert selector of OPACs for subject access; neural nets and information science and value adders; and library and information science professionals and knowledge engineering.

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Abstract

Describes a hypertext-based system that integrates the bibliographic information of the library catalogue with user-defined knowledge structures, imports information at the user's command, and offers a dynamic personal information tool for active users. Describes the structure and the content of the data base, and shows how the system can be accommodated to different user groups or individual users.

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Abstract

Contribution to a thematic issue devoted to subject control in on-line catalogues. In contrast with data base searching, the use of an OPAC is direct, without intermediaries and without prior training. This tool allows decentralised information access, 1st in the library and now directly from users' homes. In France MINITEL has made distributed access possible. Outlines the French authority list, RAMEAU (Répertoire d'Autorité Matière Encyclopédique et Alphabétique Unifié) giving details or its users and describes searching the system and the search software, ALEXIS. ALEXIS can serve as an example of the direction to take since it was developed within the perspective of natural language queries.