Search (9 results, page 1 of 1)

  • × theme_ss:"OPAC"
  • × theme_ss:"Retrievalstudien"
  • × year_i:[1990 TO 2000}
  1. Hofstede, M.: Literatuur over onderwerpen zoeken in de OPC (1994) 0.00 
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    Type
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  2. Hancock-Beaulieu, M.; McKenzie, L.; Irving, A.: Evaluative protocols for searching behaviour in online library catalogues (1991) 0.00 
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  3. Johnson, K.E.: OPAC missing record retrieval (1996) 0.00 
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    Abstract
    Reports results of a study, conducted at Rhode Island University Library, to determine whether cataloguing records known to be missing from a library consortium OPAC database could be identified using the database search features. Attempts to create lists of bibliographic records held by other libraries in the consortium using Boolean searching features failed due to search feature limitations. Samples of search logic were created, collections of records based on this logic were assembled manually and then compared with card catalogue of the single library. Results suggest that use of the Boolean OR operator to conduct the broadest possible search could find 56.000 of the library's missing records that were held by other libraries. Use of the Boolean AND operator to conduct the narrowest search found 85.000 missing records. A specific library search made of the records of the most likely consortium library to have overlaid the single library's holdings found that 80.000 of the single library's missing records were held by a specific library
    Type
    a
  4. Tillotson, J.: Is keyword searching the answer? (1995) 0.00 
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    Abstract
    Examines 3 aspects of keyword searching to see if defaulting to keyword searches might serve as a solution to the problems users find when performing subject searches in OPACs. Investigates if keyword searching produces useful results; if people who use keyword searches to find information on a subject report that they are satisfied with the results; and how keyword searching and controlled vocabulary searching are offered and explained in currently available OPAC interfaces. Concludes that both keyword and controlled vocabulary searching ought to be easily available in an OPAC, and that improvements need to be made in explanation and help offered to subject searchers
    Type
    a
  5. Drabenstott, K.M.; Weller, M.S.: Improving personal-name searching in online catalogs (1996) 0.00 
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    Abstract
    Reports results of a study to examine the performance of online catalogue searches involving personal names and to recommend improvements to the basic system approach to soliciting user queries and searching for them. The research questions addressed in the study wre: how online systems can chose searching approaches on their own that are likely to produce useful retrieval; how online systems solicit queries from users; and how users respond to an experimental online catalogue that prompts them for the different elements of their personal name queries. Improvements include: the implementation of a new design for online catalogue searching that features search trees; new methods for soliciting user queries bearing personal names; and enlisting the participation of online catalogue users in the evaluation of system prompts, instructions, and messages that request input from them
    Type
    a
  6. Borgman, C.L.: Why are online catalogs still hard to use? (1996) 0.00 
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    Abstract
    We return to arguments made 10 years ago that online catalogs are difficult to use because their design does not incorporate sufficient understanding of searching behavior. The earlier article examined studies of information retrieval system searching for their implications for online catalog design; this article examines the implications of card catalog design for online catalogs. With this analysis, we hope to contribute to a better understanding of user behavior and to lay to rest the card catalog design model for online catalogs. We discuss the problems with query matching systems, which were designed for skilled search intermediaries rather than end-users, and the knowledge and skills they require in the information-seeking process, illustrated with examples of searching card and online catalogs. Searching requires conceptual knowledge of the information retrieval process - translating an information need into a searchable query; semantic knowledge of how to implement a query in a given system - the how and when to use system features; and technical skills in executing the query - basic computing skills and the syntax of entering queries as specific search statements. In the short term, we can help make online catalogs easier to use through improved training and documentation that is based on information-seeking bahavior, with the caveat that good training is not a substitute for good system design. Our long term goal should be to design intuitive systems that require a minimum of instruction. Given the complexity of the information retrieval problem and the limited capabilities of today's systems, we are far from achieving that goal. If libraries are to provide primary information services for the networked world, they need to put research results on the information-seeking process into practice in designing the next generation of online public access information retrieval systems
    Type
    a
  7. Kilgour, F.G.; Moran, B.B.; Barden, J.R.: Retrieval effectiveness of surname-title-word searches for known items by academic library users (1999) 0.00 
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    Abstract
    This article reports the findings of an experiment using a simulated title pages, author surnames, and title words, one-third of which were selected by each of the 3 authors, to determine the frequency of one-screen displays when used to search for known items in an implied Boolean retrieval system. Searches comprising surname plus one significant title word produced one-screen displays 78% of time; surname plus 2 words 97% of the time; and surname plus 3 words 98,5%. Three quarters of the significant words were nouns
    Type
    a
  8. Lancaster, F.W.; Connell, T.H.; Bishop, N.; McCowan, S.: Identifying barriers to effective subject access in library catalogs (1991) 0.00 
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  9. Peters, T.A.; Kurth, M.: Controlled and uncontrolled vocabulary subject searching in an academic library online catalog (1991) 0.00 
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