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  • × theme_ss:"OPAC"
  1. Walker, S.: Improving subject access painlessly : recent work on the Okapi online catalogue projects (1988) 0.03 
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    Program. 22(1988), S.21-31
  2. Hug, H.; Nöthiger, R.: ETHICS: an online public access catalogue at ETH-Bibliothek, Zürich (1988) 0.03 
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    Program. 22(1988), S.133-142
  3. Cooper, M.D.; Chen, H.-M.: Predicting the relevance of a library catalog search (2001) 0.02 
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    Abstract
    Relevance has been a difficult concept to define, let alone measure. In this paper, a simple operational definition of relevance is proposed for a Web-based library catalog: whether or not during a search session the user saves, prints, mails, or downloads a citation. If one of those actions is performed, the session is considered relevant to the user. An analysis is presented illustrating the advantages and disadvantages of this definition. With this definition and good transaction logging, it is possible to ascertain the relevance of a session. This was done for 905,970 sessions conducted with the University of California's Melvyl online catalog. Next, a methodology was developed to try to predict the relevance of a session. A number of variables were defined that characterize a session, none of which used any demographic information about the user. The values of the variables were computed for the sessions. Principal components analysis was used to extract a new set of variables out of the original set. A stratified random sampling technique was used to form ten strata such that each new strata of 90,570 sessions contained the same proportion of relevant to nonrelevant sessions. Logistic regression was used to ascertain the regression coefficients for nine of the ten strata. Then, the coefficients were used to predict the relevance of the sessions in the missing strata. Overall, 17.85% of the sessions were determined to be relevant. The predicted number of relevant sessions for all ten strata was 11 %, a 6.85% difference. The authors believe that the methodology can be further refined and the prediction improved. This methodology could also have significant application in improving user searching and also in predicting electronic commerce buying decisions without the use of personal demographic data
  4. Wimmer, W.: Multimedia-Angebote im Bibliothekskatalog : Neue Möglichkeiten durch das ALLEGRO-Programm ALCARTA (1999) 0.02 
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    Date
    22. 1.2000 19:36:10
    22. 1.2000 19:41:58
  5. Mitev, N.; Hildreth, C.R.: ¬Les catalogues interactifs en Grande-Bretagne et aux Etats-Unis (1989) 0.02 
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    Bulletin des bibliothèques de France. 34(1989) no.1, S.22-47
  6. Wagner, H.: OPAC für jedermann? (1993) 0.02 
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    Footnote
    Eine Replik zu Auer: OPAC und Zeichensatz (Mitteilungen der VÖB 46(1993) H.2, S.21-22)
  7. Auer, G.: Online-Kataloge und Zeichensatz (1993) 0.02 
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    Source
    Mitteilungen der Vereinigung Österreichischer Bibliothekare. 46(1993) H.2, S.21-22
  8. Riesthuis, G.J.A.; Stuurman, P.: Tendenzen in de onderwerpsontsluiting : T.4: Onderwerpsontsluiting en on-line catalogi (1990) 0.02 
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    Source
    Open. 22(1990) no.10, S.326-330
  9. Ostendorp, C.; Trinks-Schulz, H.: Integriertes Bibliothekssystem BABSY/i3v an der Hochschulbibliothek der Fachhochschule Gelsenkirchen (1999) 0.02 
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    Date
    23. 3.2000 15:22:58
  10. Wimmer, W.: Mit dem 'Surfbrett' in die Bibliothek : der World-Wide-Web Katalog der Bibliothek der Friedrich-Ebert-Stiftung (1996) 0.02 
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    Date
    22. 4.1996 20:07:57
  11. Recker, I.; Ronthaler, M.; Zillmann, H.: OSIRIS - Osnabrück Intelligent Research Information System : ein Hyperbase Front End System für OPACs (1996) 0.02 
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    Date
    22. 4.1996 20:07:57
  12. Hogan, S.A.: Educating users about catalogues and cataloguing : the impossible dream (1993) 0.02 
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    Source
    International cataloguing and bibliographic control. 22(1993) no.2, S.23-26
  13. Walker, S.: ¬The Okapi online catalogue research projects (1989) 0.02 
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    Date
    16. 8.1998 11:22:08
  14. Cherry, J.M.; Clinton, M.: ¬An experimental investigation of two types of instruction for OPAC users (1991) 0.01 
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    Canadian journal of information science. 16(1991) no.4, S.2-22
  15. McLachlan, R.W.: Public libraries : shrinking dollars, increased demands; clerical staff and OCLC to the rescue (1991) 0.01 
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    Source
    OCLC micro. 7(1991) no.6, S.19-22
  16. Seruga, J.: Object-oriented modeling of a library information system (1997) 0.01 
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    Source
    LASIE. 28(1997) no.4, S.22-34
  17. Online-Benutzerkataloge : Vergleich von OPACs mit Ausleihfunktionen an deutschen Universitätsbibliotheken (1994) 0.01 
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    Isbn
    3-924659-22-2
  18. Schweikl, G.: ¬Die Pilotierung des SISIS-OPAC-ONL V 1.0 an der Universitätsbibliothek Regensburg (1994) 0.01 
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    Bibliotheksforum Bayern. 22(1994) H.3, S.358-376
  19. Sandlian, P.: Rethinking the rules (1995) 0.01 
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    School library journal. 41(1995) no.7, S.22-25
  20. Porter, M.; Galpin, V.: Relevance feedback in a public access catalogue for a research library : Muscat at the Scott Polar Research Institute (1988) 0.01 
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    Source
    Program. 22(1988), S.1-20

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