-
Cousins, S.A.: Enhancing subject access to OPACs : controlled vocabulary vs. natural language (1992)
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- Abstract
- Experimental evidence suggests that enhancing the subject content of OPAC records can improve retrieval performance. This is based on the use of natural language index terms derived from the table of contents and back-of-the-book index of documents. The research reported here investigates the alternative approach of translating these natural language terms into controlled vocabulary. Subject queries were collected by interview at the catalogue, and indexing of the queries demonstrated the impressive ability of PRECIS, and to a lesser extent LCSH, to represent users' information needs. DDC performed poorly in this respect. The assumption was made that an index language adequately specific to represent users' queries should be adequate to represent document contents. Searches were carried out on three test databases, and both natural language and PRECIS enhancement of MARC records increased the number of relevant documents found, with PRECIS showing the better performance. However, with weak stemming the advantage of PRECIS was lost. Consideration must also be given to the potential advantages of controlled vocabulary, over and above basic retrieval performance measures
- Source
- Journal of documentation. 48(1992) no.3, S.291-309
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Smith, I.A.; O'Brien, A.: Signposts to information : keywords, indexes and thesauri (1993)
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- Abstract
- Shortened and revised version of a paper presented during an Education Librarian's Group session at the Under One Umbrella Two Conference, organized by the Library Association in Manchester, 9-11 Jul 93. With the possibility of free text searching and easy access to CD-ROM databases, users often do not realise that subject searching is enhanced by familiarity with the controlled vocabulary underlying the indexing system of the database. Discusses the construction of information retrieval thesauri, the problems of terminology and how the use of thesauri can make searching more effective, using education thesauri as examples
-
Kartus, E.: ¬A fully automated cataloguing workbench with enhanced subject access : the cataloguer's dream or nightmare? (1993)
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- Abstract
- Describes the Intelligent Literature Search Assistant (ILSA) which demonstrates the possibilities of a fully automated cataloguing workbench in an object orientated environment. Although developed with OPAC users in mind, it can be very useful to cataloguers in aiding both classification and subject heading access. Also describes work done at the University of Strathclyde in the area of machine learning and knowledge based systems, the Structured Information Management: Processing and Retrieval project (SIMPR). Advocates the use of uncontrolled vocabulary headings in conjunction with systems like ILSA, a layered approach rather than direct first point access, in order to make subject cataloguing easier and more relevant and the subject catalogue more useful to others
- Footnote
- Paper presented at the 10th National Cataloguing Conference on Subject to change: subject access and the role of the cataloguer, Freemantle, Western Australia, 4-6 Nov 93
-
Dillon, M.; Wenzel, P.: Retrieval effectiveness of enhanced bibliographic records (1990)
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-
Makinen, R.H.; Friesen B.: Enhancing online bibliographic records to improve retrieval of reference collection monographs (1995)
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- Abstract
- Reports a project to enhance the records of the reference book collection, held on the online catalogue of the Minnesota University, Bio-Medical Library, with tables of contents or summaries; and to keyword index the enhancement fields to improve searching
- Source
- Bulletin of the Medical Library Association. 83(1995) no.2, S.244-246
-
Beatty, S.: ESP at ADFA after five years (1991)
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- Abstract
- Since Dec 86, the Australian Defence Force Academy (ADFA) library has been enriching bibliographic records by adding terms from either the contents pages or indexes of books. 40.000 records are now enriched, representing about 25% coverage of the ADFA database of 210.000 titles. Evaluates the retrieval effectiveness of the enriched data in an OPAC, in comparison with title and LCSH, using 90 topics from 6 different subject areas
-
Knutson, G.: Subject enhancement : report on an experiment (1991)
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- Abstract
- This report describes an experiment in subject enhancement conducted at an academic research library. Subjects and contents notes were added to online catalog records for a group of previously uncirculated social science essay collections, and circulation was monitored over one academic year. A control group, plus a third group with added contents notes but no extra subjects, were also monitored. Results showed an improvement in recorded use for the subject-enhanced titles, but not for titles that only had added contents notes. The effects of browsing, keyword searching, and OPAC display are discussed
-
Ihadjadene, M.: ¬Les tables des matières dans les catalogues en ligne : opportunités, méthodes et couts (1998)
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- Abstract
- Analysis of research to date on improving subject access by including contents tables in bibliographic records. Results indicate the need for clear methodology (criteria for selecting notoces for enrichment, manual and semi automated methods, cost). Evaluations, based on recall, precision and rate of circulation, indicate manifest benefits, especially in virtual libraries where information is superabundant; but enrichment is a complex process
- Date
- 29. 1.1996 16:50:24
14. 4.2000 11:29:29
-
Beatty, S.: Table of contents or index data for subject enrichment : sources and developments (1993)
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- Abstract
- Outlines the present manual procedures at the Australian Defence Force Academy Library for subject enrichment with reference to the evaluation with reference to the evaluation study carried out in 1991. Investigates potential sources of contents and index data in machine readable form. Reports of the Monographic Table of Contents Project at OCLC and on the latest developments in USMARC format for contents page data
- Source
- Cataloguing Australia. 19(1993) no.1, S.16-29
-
Wormell, I.: Indizacion SAP para la exploracion del amplio contexto tematico de libros y para el accesso a entidades semanticos mas pequenas (1994)
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- Abstract
- Describes an approach to indexing which seeks to eliminate the shortcoming of the representation of information in existing bibliographic catalogues: Subject Access Project (SAP) indexing which has been used successfully at Lund University and elsewhere. Existing catalogue records have been enriched with terms selected from lists of contents and indexes in books thus facilitating access to specific parts of documents and smaller semantic entites such as chapter titles, subject titles and data in graphic or tabulated form available in a wide range of publications
- Content
- SAP indexing for exploring the full thematic context of books and for access to smaller semantic entites
- Date
- 29. 1.1996 16:01:59
-
O'Brien, A.: Online catalogs : enhancements and developments (1994)
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- Abstract
- State of the art review of enhancements in online catalogues over a 3 year period, taking for granted those features that are now standard and mainly discussing issues related to problem areas, in particular, subject access and user searching behaviour, as well as new developments that directly impinge on the catalogue's future: new interface developments and network access and resources
- Source
- Annual review of information science and technology. 29(1994), S.219-242
-
Barnes, S.; McCue, J.: Linking library records to bibliographic databases : an analysis of common data elements in BIOSIS, Agricola, and the OPAC (1991)
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- Abstract
- Myriad new information resources are available to contemporary library users. While print remains the foundation of most collections, libraries are also beginning to provide access to an array of bibliographic, numeric, and full-text databases. As more and more information is produced in electronic form and presented at computer workstations, the library catalog is being given an expanded role. The expanded catalog will play a crucial part in organizing information in electronic libraries, and in providing navigational assistance to library users. Like the traditional card catalog, the expanded catalog will not only lead to specific items or groups of sources, but also will provide connections to related materials. These connections will uses standard data elements to link the results of a search in one database with related material in another. For example, links will show local library holdings of sources in citation databases. Cornell University's Mann Library serves the College of Agriculture and Life Sciences, the College of Human Ecology, and the Division of Biological Sciences. As part of electronic library development, Mann staff have been analyzing issues involved in making it possible for Agricola and BIOSIS users to see, automatically, which of their retrieved citations are from sources available in the Cornell libraries. Samples of citations from Agricola and BIOSIS were drawn, and data elements present in these records were compared with bibliographic records of the library's holdings. In some cases, links would be provided by ISSNs. The study shows, however, that the presence of standard identifiers such as ISSN, USBN, or CODEN cannot be assumed, and other linking algorithms must be developed. This article presents study results, provides an overview of several linking systems, and identifies some of the difficulties caused by lack of standardization between different bibliographic databases. It is clear that the concept of an expanded catalog will require not only links between information resources but agreements among information professionals on standard data elements.
- Date
- 8. 1.2007 17:22:25
-
Bellei, M.: ¬Un catalogo 'ricco' (1998)
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- Abstract
- To enhance descriptions, cataloguers can add 'enriching' words or phrases to titles, or introduce content-enriched access features to aid subject-based research. Additional and natural language subject headings designed to support, though not replace, controlled language headings can result in enhanced indexing. Analytical cataloguing and double indexing are 2 other means by which readers can gian access to additional bibliographic data. Also examines how online research tool effectiveness can be enhanced by a system of automatic links between descriptors
- Date
- 29. 1.1996 17:18:10
-
Dwyer, J.: Bibliographic records enhancement : from the drawing board to the catalog screen (1991)
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- Abstract
- Contents notes can improve online access to works containing essays, short stories, and significantly titles chapters. Few records in bibliographic utilities include contents notes. The OCLC PRISM service may provide an opportunity to cooperatively build a contents-enriched database. This paper discusses some issues related to the creation of enhanced records and their display in online cataloges. It also describes one library's efforts to add contents notes lically and to participate in an anticipated OCLC pilot project
- Source
- Cataloging and classification quarterly. 13(1991) nos.3/4, S.29-51
-
Junger, U.: Möglichkeiten und Probleme automatischer Erschließungsverfahren in Bibliotheken : Bericht vom KASCADE-Workshop in der Universitäts- und Landesbibliothek Düsseldorf (1999)
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- Date
- 23.10.1996 17:26:29
-
Wormell, I.: Subject access redefinied : how new technology changes the conception of subject representation (1994)
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- Abstract
- The paper examines the developmentss that have taken place during the last decade with respect to the provision of intellectual subject access in information databases storage. The principles of the SAP indexing methodology are outlined and exemplified, leading to a discussion of the consequences for the conception of the physical 'document' versus 'semantic entities' as the basic constructs for storage and multi-dimensional representation of subject matter. Finally, the paper analyzes the impact of very recent technologies which make achievable such access conceptions and mechanisms
- Source
- Knowledge organization and quality management: Proc. of the 3rd International ISKO Conference, 20-24 June 1994, Copenhagen, Denmark. Ed.: H. Albrechtsen et al
-
Peis, E.; Fernandez-Molina, J.C.: Enrichment of bibliographic records of online catalogs through ORC and SGML technology (1998)
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- Abstract
- Reports results of research into the feasibility of using OCR scanner technology to capture contents pages of collective monographs and to extract the bibliographic information of each individual work and process this using a standardized language, such as SGML, for tagging electronic documents. By this means, data can be used as electronic information or stored in OPACs, thus providing additional access points. Outlines a pilot system to test the initial hypotheses, show the feasibility of achieving the suggested goals and develop the tasks required for them to be carried out as automatically as possible
-
Weintraub, T.S.; Shimoguchi, W.: Catalog record contents enhancement (1993)
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- Abstract
- Contents enhancement of catalog records may increase access to books in collections and aid in effective resource sharing by providing more detailed descriptions about library holdings in the catalog. A sample of monographs in San Diego State Univ. Library was studied to determine the extent to which information in books from parts of the collection could be represented better by content notes, and to determine how much of this information has subject or analytical applications. The study revealed that approximately 23% of the books contain discrete content information not already represented in catalog records that could be added. Of those, 52% would be citation-based enhancements and 48% would be subject-based. Nearly 65% would require fewer than 25 enhancements, with an average of 8.03 enhancements per book for the total population
-
Enhancing USMARC records with table of contents (1992)
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- Abstract
- Considers methods of enriching bibliographic USMARC records for OPACs via a subject enhancement process involving the inclusion of subject information derived from the books' contents tables
-
¬The subject enhancement of OPAC records and the need for multilingual access (1993)
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- Abstract
- Considers the potential of providing enhanced content indexing of document records either by natural language or PRECIS controlled vocabulary in order to provide more effective subject access to OPACs. Considers multilingual access OPACs. Controlled vocabulary is the best option for the latter in the short terms
