Search (104 results, page 2 of 6)

  • × language_ss:"e"
  • × theme_ss:"OPAC"
  • × year_i:[1980 TO 1990}
  1. Croucher, C.: Problems of subject access : user studies and interface design (1986) 0.00 
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    Abstract
    A research project at Middlesex Polytechnic is examning the problems of subject access in an OPAC. A series of user studies have been carried out which examined students' use of existing catalogue facilities, which in turn led to the experimental evaluation of various interface designs for an online catalogue. The experiments were primarily concerned with the effect of the following variables on the speed and accuracy of retrieval of specific items, the use of colour, the speed of presentation of information, the amount of information on a screen, the paging and scrolling of information, the position of a sought item within a list
  2. Walker, S.; Jones, R.M.: Improving subject retrieval in online catalogues : T.1: Stemming, automatic spelling correction and cross-reference tables (1987) 0.00 
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    Theme
    Verbale Doksprachen im Online-Retrieval
  3. Klugman, S.: Failures in subject retrieval (1989) 0.00 
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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.
  4. Influencing the system designer : online public access to library files (1988) 0.00 
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    Abstract
    The busy nature of a system designer's occupation often keeps him or her from reading professional material or attending conferences which might influence design strategies. This volume reports the proceedings of a national conference which examined influences on automated library system designers. The papers come from a wide variety of contributors, including librarians, library school faculty, library researchers, and commercial system suppliers. Tesions amongst the library's, vendor's, and user's perspectives on OPACs are evident, but revealing
  5. Bates, M.J.: Rethinking subject cataloging in the online environment (1989) 0.00 
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    Theme
    Verbale Doksprachen im Online-Retrieval
  6. Markey, K.: Subject searching in library catalogs : Before and after the introduction of online catalogs (1984) 0.00 
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    Theme
    Klassifikationssysteme im Online-Retrieval
  7. Klugman, S.: Failures in subject retrieval (1989) 0.00 
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  8. Cochrane, P.A.: Subject access in the online catalog (1982) 0.00 
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    Theme
    Verbale Doksprachen im Online-Retrieval
  9. Hancock, M.: Subject searching behaviour at the library catalogue and at the shelves : implications for online interactive catalogues (1987) 0.00 
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    Abstract
    Searching behaviour in a university library is studied using a holistic approach, encompassing the use of bibliographic tools and shelf browsing. The present study is designed as the first half of a 'before and after' study to permit the evaluation of the impact of a future online catalogue on users' searching behaviour. A combined methodology was devised: searchers were encouraged to talk aloud during their search, and this information, together with some probing and real time expert interpretation, enabled the experimente to record the searching activity on a highly structured observation form. The study reveals the extent of subject searching activity, and suggests that this may have been underestimated in previous studies. The analysis of expressed topics, search formulation strategy and documents retrieved reveals the adaptive nature of the subject searching process, whereby the user adapts to the structure of the available tools. The information retrieval task in a traditional library system is tailored by the system to a single, one dimensional, sequential process. It is suggested that a major obstacle to subject searching effectiveness may lie in the lack of interaction between the different possible approaches in the searching process: the indexing language, the classification, and the titles. It is to be hoped that a future online searching environment will encourage a more truly interactive approach to subject searching.
  10. Kaske, N.K.: ¬A comparative study of subject searching in an OPAC among branch libraries of a university library system (1988) 0.00 
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    Abstract
    The degree of variability in the percentage of subject searching in an online public access catalog (OPAC) among branch libraries of one university was studied. A full semester's worth of transactions was analyzed, not sampled. The time units used were hour of the day, day of the week, and week of the semester. The findings show that subject searching varies from a low of 22% to a high of 74% over the hours of a day. Variability for the days of the week ranged from 17% to 64%, and for the weeks of the semester variability ranged from 12% to 70%. Valuable management information on the utilization of the OPAC within each brach library and among all the branch libraries is provided through numerous charts and graphs.
    Source
    Information technology and libraries. 7(1988), S.359-372
  11. Mischo, W.H.; Lee, J.: End-user searching in bibliographic databases (1987) 0.00 
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    Source
    Annual review of information science and technology. 22(1987), S.227-263
  12. Lester, M.A.: Coincidence of user vocabulary and Library of Congress Subject Headings : experiments to improve subject access in academic library online catalogs (1989) 0.00 
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    Theme
    Verbale Doksprachen im Online-Retrieval
  13. Hickey, T.B.: ¬The Experimental Library System (XLS) (1989) 0.00 
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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).
  14. Austin, J.; Pejtersen, A.M.: Fiction retrieval : experimental design and evaluation of a search system based on user's value criteria. Pt.2 (1984) 0.00 
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  15. Markey, K.: Alphabetical searching in an online catalog (1989) 0.00 
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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
  16. Wainwright, E.: Towards the extended catalogue : views from a user-oriented employer (1989) 0.00 
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    Abstract
    Contends that quality in a catalogue is crucially related to its capability to deliver the services it is intended to provide: enabling a user to find a book of which the author, title or subject is known; and to show what the library has be a given author or on a given subject or in a given kind of literature. Describes changes in recent years which have implications for the choice of a retrieval system for library users. Discusses 2 types of problems experiences by users wanting to harness the potential of OPACs. These include: problems with the system itself. Describes the role of the cataloguer today which is essentially to interface the users with the retrieval system
  17. Riesthuis, G.J.A.; Colenbrander-Dijkman, A.-M.: Subject access to central catalogues : incompatibility issues of library classification systems and subject headings in subject cataloguing (1986) 0.00 
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    Abstract
    Traditional subject cataloguing hampers subject retrieval in central catalogues, because of the lack of a common indexing and retrieval language in these catalogues. This study investigates the possibilities to use the various individual subject access systems, present in the catalogues, for subject access. A search procedure based on 'citation pearl growing' and 'user relevance feedback', which can be applied in a public access interface to central data bases, has been developed. From an experiment it can be concluded, that automated expert assistance, provided with a search strategy, will improve search response for unexperienced searchers. It reduces the number of zero-hits and increases the number of relevant items retrieved
  18. Gerhan, D.R.: LCSH in vivo : subject searching performance and strategy in the OPAC era (1989) 0.00 
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    Abstract
    Weaknesses within the system of LCSH are widely expected to be bypassed by OPACs as they open other subject access routes into collections. How LCSH perform under OPAC retrieval capabilities in direct comparison to title field subject searching is studies heuristically and quantitatively. Observed patterns of LCSH function are discussed, and conclusions about search strategy are offered
  19. Congreve, J.: Problems of subject access : automatic generation of printed indexes and online thesaural control (1986) 0.00 
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    Theme
    Verbale Doksprachen im Online-Retrieval
  20. McCarthy, C.: ¬A reference librarian's view of the online subject catalog (1989) 0.00 
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    Abstract
    This paper suggests that the cataloging community may be setting its goals too low in its approach to online subject access. Truly effective subject retrieval for online catalog users will not be possible until the Library of Congress gives a higher priority to consistency in the assignment of subject headings. In recognition of the intellectual complexity of LCSH, the paper proposes the appointment of subject specialists to monitor the assignment of subject headings at the Library of Congress.

Authors

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  • a 90
  • s 6
  • m 4
  • b 2
  • d 1
  • r 1
  • More… Less…

Themes

Subjects

Classifications