-
Beccaria, M.; Scott, D.: Fac-Back-OPAC : an open source interface to your library system (2007)
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- Date
- 17. 8.2008 11:22:47
- Source
- Computers in libraries. 27(2007) no.9, S.6-
-
Khoo, C.S.G.; Wan, K.-W.: ¬A simple relevancy-ranking strategy for an interface to Boolean OPACs (2004)
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- Abstract
- A relevancy-ranking algorithm for a natural language interface to Boolean online public access catalogs (OPACs) was formulated and compared with that currently used in a knowledge-based search interface called the E-Referencer, being developed by the authors. The algorithm makes use of seven weIl-known ranking criteria: breadth of match, section weighting, proximity of query words, variant word forms (stemming), document frequency, term frequency and document length. The algorithm converts a natural language query into a series of increasingly broader Boolean search statements. In a small experiment with ten subjects in which the algorithm was simulated by hand, the algorithm obtained good results with a mean overall precision of 0.42 and mean average precision of 0.62, representing a 27 percent improvement in precision and 41 percent improvement in average precision compared to the E-Referencer. The usefulness of each step in the algorithm was analyzed and suggestions are made for improving the algorithm.
- Source
- Electronic library. 22(2004) no.2, S.112-120
-
Breeding, M.: Thinking about your next OPAC (2007)
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- Date
- 17. 8.2008 11:27:00
- Source
- Computers in libraries. 27(2007) no.4, S.28-31
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Horn, M.E.: "Garbage" in, "refuse and refuse disposal" out : making the most of the subject authority file in the OPAC (2002)
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- 10. 9.2000 17:38:22
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Moulaison, H.L.: OPAC queries at a medium-sized academic library : a transaction log analysis (2008)
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- 10. 9.2000 17:38:22
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Wien, C.: Sample sizes and composition : their effect on recall and precision in IR experiments with OPACs (2000)
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- Date
- 27. 7.2006 15:20:26
-
Breeding, M.: ¬The birth of a new generation of library interfaces (2007)
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- Source
- Computers in libraries. 27(2007) no.9, S.34-
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Mi, J.; Weng, C.: Revitalizing the library OPAC : interface, searching and display challenges (2008)
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- Source
- Information technology and libraries. 27(2008) no.1, S.5-19
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Lam, V.-T.: Enhancing subject access to monographs in Online Public Access Catalogs : table of contents added to bibliographic records (2000)
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- Date
- 22. 9.1997 19:16:05
-
Li, Y.-O.; Leung, S.W.: Computer cataloging of electronic Journals in unstable Aggregator Databases the Hong Kong Baptist University Library experience (2001)
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- Date
- 10. 9.2000 17:38:22
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Poo, D.C.C.; Khoo, C.S.G.: Online Catalog Subject Searching (2009)
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- 27. 8.2011 14:24:29
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Butterfield, K.: Online Public Access Catalogs (OPACs) (2009)
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- Date
- 27. 8.2011 14:32:59
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Golderman, G.M.; Connolly, B.: Between the book covers : going beyond OPAC keyword searching with the deep linking capabilities of Google Scholar and Google Book Search (2004/05)
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- Date
- 2.12.2007 19:39:22
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Cooper, M.D.: Usage patterns of a Web-based library catalog (2001)
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- Abstract
- This article reports on a model and patterns of use of a library catalog that can be accessed through the Internet. Three categories of users are identified. individuals who perform a search of the catalog, tourists who look only at opening pages of the library catalog's site, and Web spiders that come to the site to obtain pages for indexing the Web. A number of types of use activities are also identified, and can be grouped with the presearch phase (which takes place before any searching begins): the search phase, the display phase (in which users display the results of their search), and phases in which users make errors, ask the system for help or assistance, and take other actions. An empirical investigation of patterns of use of a university Web-based library catalog was conducted for 479 days. During that period, the characteristics of about 2.5 million sessions were recorded and analyzed, and usage trends were identified. Of the total, 62% of the sessions were for users who performed a search, 27% were from spiders, and 11% were for tourists. During the study period, the average search session lasted about 5 minutes when the study began and had increased to about 10 minutes 16 months later. An average search consisted of about 1.5 presearch actions lasting about 25 seconds, about 5.3 display actions, and 2.5 searches per session. The latter two categories are in the range of 35-37 seconds per session each. There were major differences in usage (number of searches, search time, number of display actions, and display time), depending upon the database accessed
-
Guidelines for Online Public Access Catalogue (OPAC) Displays : Final Report May 2005. Recommended by the IFLA Task Force on Guidelines for OPACD Displays. Approved by the Standing Committee of the IFLA Cataloguing Section (2005)
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- Series
- IFLA series on bibliographic control; vol. 27
-
Blosser, J.; Michaelson, R.; Routh. R.; Xia, P.: Defining the landscape of Web resources : Concluding Report of the BAER Web Resources Sub-Group (2000)
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- Date
- 21. 4.2002 10:22:31
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Thomas, D.H.: ¬The effect of interface design on item selection in an online catalog (2001)
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- Date
- 10. 9.2000 17:38:22
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Miller, D.H.: User perception and the online catalogue : public library OPAC users "think aloud" (2004)
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- 17. 6.2015 14:44:27
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Saving the time of the library user through subject access innovation : Papers in honor of Pauline Atherton Cochrane (2000)
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- Date
- 22. 9.1997 19:16:05
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Oberhauser, O.: Card-Image Public Access Catalogues (CIPACs) : a critical consideration of a cost-effective alternative to full retrospective catalogue conversion (2002)
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- Date
- 27. 6.2003 13:25:41
