Search (330 results, page 2 of 17)

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Abstract

Current OPAC show their weakness in terms of ease of use and comprehension of user requests, and more generally in man/machine dialogue. Most OPAC searches are for subjects and these give the word results. Natural language processing techniques exist to reduce these difficulties. In France, natural language processing has been used to access the yellow pages (headings) of the French phone directory and the telematics services directory; examples are included. No doubt the future library systems will use these techniques to make the new OPACs really open, public, accessible and co-operative (user-friendly)

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Abstract

Outlines the difficulties experienced by users in the searching of OPACs. Describes visits to 3 scientific libraries in Montreal which provide OPACs: the library of the Ecole Polytechnique which offers ARCHIMEDE; the scientific library of the University of Quebec which offers BADADUQ; and the Physical Sciences and Engineering Library of McGill University which offers MUSE. Compares user training programmes offered by each of these libraries and discusses the librarians' responses to a questionnaire on user training under the following headings: mode of learning; teacher participation; marketing policy; and statistics of OPAC usage

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Abstract

Presents the results of research carried out to discover whether or not the ability to search an online catalogue using keywords is a reasonably alternative to a built-in cross reference structure for variant forms. MARC records were checked against LoC authorities for references from non-preferred headings. All keywords in these references were then compared, and matched, when possible, with keywords in any MARC fields

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Abstract

A survey of catalogue use in 1993 at Utrecht University in the Netherlands showed considerable dissatisfaction with the online catalogue's subject search facilities. Of those who used subject searching 64% preferred subject headings against only 2% who chose classification schedules. Library users make little use of the existing facilities for assistance and leaflets which are available in the library. It has, therefore, been decided to provide a programme of instruction in library use and to move towards a unified system of subject access to the library's catalogue

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Abstract

Contribution to a thematic issue devoted to a subject control in on-line catalogues. Examines whether a subject cataloguing code is, at this point in time, necessary or economically feasible, as well as questioning who will develop such a code and if experiences with AACR2 should make librarians fearful or hopeful about similar work with subject headings.

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Abstract

Rules regarding cataloguing, subject headings, the way information in bibliographic records is organised and the catalogue's interface, or the way the screen is set up, are barriers to the use of online catalogues by children Describes the background to and implementation of a project to create a child orientation catalogue with a graphical user interface, or one that relies on pictures instead of text, within Denver Public Library in Colorado. Now called the Kid's catalog and commercially available from the Colorado Alliance of Research Libraries Co., the catalogue's software acts as a front end to a library's regular catalogue

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Abstract

A study of the online catalogues of major academic libraries and databases in the Netherlands shows considerable variation in the form of name used for the author W.F. Hermans. The problem lies with a lack of authority control in headings used in the Dutch national union Pica catalogue. Reactions from 2 cataloguers point to the difficulties in maintaining catalogues in the face of reduced funding and to the important role played by the Pica project in improving library services and reducing cataloguing backlogs

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Abstract

Uses the results of various user studies to offer some insight into user behaviour in connection with OPAC access points and to explore conditions for subject searching, the difficulties involved and the matching of queries to subject headings. Sums up suggestions for the improvement of subject access to OPACs

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Abstract

User interfaces for CD-ROM products in the academic library environment must accomodate a variety of user and task profiles. Discusses the practical considerations that govern the implementation of interface design principles for such electronic data bases under the following headings: redesign goals; interaction style; menu design and implementation; system structure and the search paradigm; basic system operation and screen layout; simplified features; integrated novice and expert mode; redesign constraints; and hardware and software constraints

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Abstract

Description of an attempt to improve OPAC subject access at Kobe University Library using Nippon Decimal Classification, 8th ed. (NDC8). Examines the theoretical aspects of using a classification for subject searching, then explains the Kobe system. Using the NDC8 machine-readable data file, a database was created for the OPAC, incorporating class numbers and subject headings. Difficulties arise from subdivisions and the structure of NDC8 itself, but it is an important area for development

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Abstract

Purpose - The paper aims to describe a proof of concept web application designed to allow users to search for library materials with geographic subject headings using Google Maps as the primary interface for navigation. The purpose of the paper is to describe the development of an innovative tool that one library has created to provide users with a new way to access bibliographic records. Design/methodology/approach - The approach taken is descriptive, with the development process for the proof of concept laid out in detail and placed it within the broader contexts of web application development at the host library and the emergence of Web 2.0 tools. Findings - The paper shows that unique and valuable new methods of accessing bibliographic data can be created through the use of application programming interfaces (APIs), one of the more powerful tools available to web application developers today. Research limitations/implications - Challenges of working with geographic information in subject headings of bibliographic records are discussed, and potential methods for dealing with these challenges are described. Originality/value - The paper shows that it is possible to use APIs provided by large internet entities such as Google to create map based navigational tools for accessing bibliographic information. It also shows the value of allowing library systems staff to explore new technologies.

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Abstract

Results of previous catalog research indicate that users want improvements in subject searching features, noting display of terms related to their topics as especially desirable. This study reports the findings of an examination of subject searchers' use of such a feature provided through online display of authority information from Library of Congress Subject Headings for terms used in the catalog. It was found that, of the terms entered by users, 78 percent were an exact or close match to catalog terms, and another 14 percent matched "see" references. Although additional information was available for nearly half of the searches performed, it was used in only 28 percent of these cases. It is suggested that improvements in subject searching features are needed to encourage use of available syndetic structures

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Abstract

OLIVE, a transaction logging facility enhanced with online questionnaires, was used to collect data from users of public and academic library catalogues. The comparative analysis of subject searching behaviour focused on the role of browsing subject headings and brief references in search formulation. Opportunities for browsing are greatly constrained by indexing practices. It is suggested that a more integrated approach to pre-coordinate and post-coordinate searching would be more effective. The logging software has been developed for a number of commercial online catalogues including Geac, CLSI and LIBERTAS. The use of a diagnostic and monitoring tool in the evaluation of OPACs is advocated

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Abstract

Introducess a new approach to display retrieved subject headings in subject searching designed to encourage users to browse bibliographic information. Emphasizes the importance of the exact display approach by showing how many user queries could be candidates for this approach, demonstrates an implementation of the exact-display approach in an experimental online catalogue. End user experiences gives opportunities to make recommendations for enhancing the original design of the exact display approach so that future implementations of this approach in operational online catalogues are responsive to the needs of online catalogue users

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Abstract

The study of subject access to UK academic library catalogues was based on a questionnaires end out during Summer 1991. 86 out of a possible 110 questionnaires were returned. All universities and polytechniques now have OPACs which are progressing well towards comprehensive bibliographical coverage of their libraries' stocks. The MARC format is now widely used. Subject access strategies are usually based on either Library of Congress Subject Headings or inhouse indexing systems but almost half the OPACs studies have no separate subject searching option based on subject indexing is expensive and future subject indexing strategies are best based on pre-existing controlled vocabularies. Strategies authority control is essential. A limited range of software strategies is recommended including the need to limit search results

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Abstract

Law libraries that introduce online catalogs to their publics often experience the same kinds of problems and benefits as other types of libraries. Nevertheless, certain issues for OPAC subject searching can be particularly challenging for law libraries. This paper addresses those issues, especially the impact on subject access of the design of shared OPACs and the special problems regarding subject searches on government agency names and titles of laws. Difficulties with law-related subject headings are also discussed. Finally, keyword and call number searching are examined from the law library perspective.

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Abstract

Finding books by subject in large libraries is a difficult task at the best of times. Since users seldom think of their topic in terms of library subject headings, they encounter problems in finding matches. Online catalogs have helped somewhat by allowing keyword searching and Boolean combinations. They have also perpetuated some problems (lack of authority control and of cross references) and created new ones, namely requiring users to acquire complex skills. Libraries need to look carefully at the MARC format and at enhanced and enriched subject approaches. Machine-generated links and leads can provide more paths and wider access to subject information.

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Abstract

Current online catalogs have problems providing reasonable subject access, often resulting in searches with too few or too many hits. These problems can be improved by enhancing MARC records, building semantic networks through cross-references, and linking subject headings to classification numbers. This paper describes a pilot project to design a hypertext search engine using these principles

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Abstract

This paper examines some traditional information searching methods and their role in Hungarian OPACs. What challenges are there in the digital and online environment? How do users work with them and do they give users satisfactory results? What kinds of techniques are users employing? In this paper I examine the user interfaces of UDC, thesauri, subject headings etc. in the Hungarian library. The key question of the paper is whether a universal system or local solutions is the best approach for searching in the digital environment.

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Abstract

Controlled vocabulary and subject headings in OPAC records have proven to be useful in improving search results. The authors used a survey to gather information about librarian opinions and professional use of controlled vocabulary. Data from a range of backgrounds and expertise were examined, including academic and public libraries, and technical services as well as public services professionals. Responses overall demonstrated positive opinions of the value of controlled vocabulary, including in reference interactions as well as during bibliographic instruction sessions. Results are also examined based upon factors such as age and type of librarian.