Search (26 results, page 1 of 2)

  • × theme_ss:"OPAC"
  • × theme_ss:"Semantisches Umfeld in Indexierung u. Retrieval"
  1. Fieldhouse, M.; Hancock-Beaulieu, M.: ¬The design of a graphical user interface for a highly interactive information retrieval system (1996) 0.01 
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    Source
    Information retrieval: new systems and current research. Proceedings of the 16th Research Colloquium of the British Computer Society Information Retrieval Specialist Group, Drymen, Scotland, 22-23 Mar 94. Ed.: R. Leon
    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  2. Gnoli, C.; Pusterla, L.; Bendiscioli, A.; Recinella, C.: Classification for collections mapping and query expansion (2016) 0.01 
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    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  3. Caro Castro, C.; Travieso Rodríguez, C.: Ariadne's thread : knowledge structures for browsing in OPAC's (2003) 0.01 
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    Abstract
    Subject searching is the most common but also the most conflictive searching for end user. The aim of this paper is to check how users expressions match subject headings and to prove if knowledge structure used in online catalogs enhances searching effectiveness. A bibliographic revision about difficulties in subject access and proposed methods to improve it is also presented. For the empirical analysis, transaction logs from two university libraries, online catalogs (CISNE and FAMA) were collected. Results show that more than a quarter of user queries are effective due to an alphabetical subject index approach and browsing through hypertextual links. 1. Introduction Since the 1980's, online public access catalogs (OPAC's) have become usual way to access bibliographic information. During the last two decades the technological development has helped to extend their use, making feasible the access for a whole of users that is getting more and more extensive and heterogeneous, and also to incorporate information resources in electronic formats and to interconnect systems. However, technology seems to have developed faster than our knowledge about the tasks where it has been applied and than the evolution of our capacities for adapting to it. The conceptual model of OPAC has been hardly modified recently, and for interacting with them, users still need to combine the same skills and basic knowledge than at the beginning of its introduction (Borgman, 1986, 2000): a) conceptual knowledge to translate the information need into an appropriate query because of a well-designed mental model of the system, b) semantic and syntactic knowledge to be able to implement that query (access fields, searching type, Boolean logic, etc.) and c) basic technical skills in computing. At present many users have the essential technical skills to make use, with more or less expertise, of a computer. This number is substantially reduced when it is referred to the conceptual, semantic and syntactic knowledge that is necessary to achieve a moderately satisfactory search. An added difficulty arises in subject searching, as users should concrete their unknown information needs in terms that the information retrieval system can understand. Many researches have focused an unskilled searchers' difficulties to enter an effective query. The mental models influence, users assumption about characteristics, structure, contents and operation of the system they interact with have been analysed (Dillon, 2000; Dimitroff, 2000). Another issue that implies difficulties is vocabulary: how to find the right terms to implement a query and to modify it as the case may be. Terminology and expressions characteristics used in searching (Bates, 1993), the match between user terms and the subject headings from the catalog (Carlyle, 1989; Drabensttot, 1996; Drabensttot & Vizine-Goetz, 1994), the incidence of spelling errors (Drabensttot and Weller, 1996; Ferl and Millsap, 1996; Walker and Jones, 1987), users problems
    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  4. Hancock-Beaulieu, M.: Interactive query expansion in an OPAC : interface and retrieval issues (1995) 0.01 
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    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  5. Hancock-Beaulieu, M.: Query expansion : advances in research in online catalogues (1992) 0.01 
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    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  6. Walker, S.; DeVere, R.: Improving subject retrieval in online catalogues : T.2: Relevance feedback and query expansion (1990) 0.01 
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    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  7. Walker, S.: Subject access in online catalogues (1991) 0.00 
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    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  8. Gödert, W.: Navigation und Konzepte für ein interaktives Retrieval im OPAC : Oder: Von der Informationserschließung zur Wissenserkundung (2004) 0.00 
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    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  9. Gödert, W.: Navigation und Konzepte für ein interaktives Retrieval im OPAC : Oder: Von der Informationserschließung zur Wissenserkundung (2004) 0.00 
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    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  10. Gödert, W.: Inhaltliche Dokumenterschließung, Information Retrieval und Navigation in Informationsräumen (1995) 0.00 
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    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  11. Hancock-Beaulieu, M.; Fieldhouse, M.; Do, T.: ¬An evaluation of interactive query expansion in an online library catalogue with a graphical user interface (1995) 0.00 
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    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  12. Hancock-Beaulieu, M.; Fieldhouse, M.; Do, T.: ¬A graphical interface for OKAPI : the design and evaluation of an online catalogue system with direct manipulation interaction for subject access (1994) 0.00 
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    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  13. Hancock-Beaulieu, M.; Walker, S.: ¬An evaluation of automatic query expansion in an online library catalogue (1992) 0.00 
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    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  14. Ihadjadene, M.; Bouché, R.: Using syntagmatic relationships based on a RAMEAU list as a browsing relevance feedback strategy in a WWW-OPAC (1998) 0.00 
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    Theme
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  15. Beaulieu, M.; Jones, S.: Interactive searching and interface issues in the Okapi best match probabilistic retrieval system (1998) 0.00 
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    Theme
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  16. Beaulieu, M.: Experiments on interfaces to support query expansion (1997) 0.00 
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    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  17. Heinz, S.: Realisierung und Evaluierung eines virtuellen Bibliotheksregals für die Informationswissenschaft an der Universitätsbibliothek Hildesheim (2003) 0.00 
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    Theme
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  18. Fieldhouse, M.; Hancock-Beaulieu, M.: ¬The changing face of OKAPI (1994) 0.00 
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    Theme
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  19. Beaulieu, M.; Payne, A.; Do, T.; Jones, S.: ENQUIRE Okapi project (1996) 0.00 
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  20. Hauer, M.: Neue OPACs braucht das Land ... dandelon.com (2006) 0.00 
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