-
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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- Abstract
- Existing Online Public Access Catalogues (OPACs) demonstrate differences in the range and complexity of their functional features, terminology, and help facilities. Many libraries already have OPACs and many of them have a need for guidelines that help them to design or redesign the displays for their OPACs, taking their users' needs into account. This book provides such guidelines, recommendations and a corpus of good practice to assist libraries in this process. The audience for these guidelines is librarians charged with customising OPAC software and vendors and producers of this software. The guidelines are mainly designed for general libraries with collections of resources in the humanities, the social sciences, and the pure and applied sciences. They are intended to apply to any type of catalogue, independently of the kind of interface and technology used. This is the Final Report of a Task Force an the matter, which was approved by the Standing Committee of the IFLA Cataloguing Section.
- Editor
- IFLA Task Force on Guidelines for OPACD Displays
- Series
- IFLA series on bibliographic control; vol. 27
-
Mischo, W.H.; Lee, J.: End-user searching in bibliographic databases (1987)
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- Abstract
- The growing interest in end user or direct patron access to on-line bibliographic databases is reviewed with references to online catalogues, databases, and CD-ROMs. The literature of end user searching is surveyed with notes on: user training, software search aids, end user services in libraries: characterisation of end user searches; the role of librarians; and CD-ROMs as end user media
- Source
- Annual review of information science and technology. 22(1987), S.227-263
-
OPACs: an overview (1993)
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- Abstract
- Part of a special section on OPACs. Gives an overview of OPACs. Describes and examines: Boolean searching, post Boolean searching, bibliographic records, user interfaces, current research, added OPAC functionality, and comment on the provision of OPAC equipment for the end user. Introduces the OPAC 93 system developed by the British Library
-
Kaske, N.K.: ¬A comparative study of subject searching in an OPAC among branch libraries of a university library system (1988)
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- Abstract
- The degree of variability in the percentage of subject searching in an online public access catalog (OPAC) among branch libraries of one university was studied. A full semester's worth of transactions was analyzed, not sampled. The time units used were hour of the day, day of the week, and week of the semester. The findings show that subject searching varies from a low of 22% to a high of 74% over the hours of a day. Variability for the days of the week ranged from 17% to 64%, and for the weeks of the semester variability ranged from 12% to 70%. Valuable management information on the utilization of the OPAC within each brach library and among all the branch libraries is provided through numerous charts and graphs.
- Source
- Information technology and libraries. 7(1988), S.359-372
-
Ercegovac, Z.: Information Access Instruction (IAI4) : design principles (1995)
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- Abstract
- This article proposes four design principles - The User, Active Learning, Conceptual Model of Teaching, and Modularity - as a conceptual framework of an Information Access Instruction (IAI4). These principles, when put in practice as specific guidelines, deamlessly link information sources together, regardless of their implementation medium, information structure, or interface style. Examples are drawn from a section of four-unit elective undergraduate course taught in the Department of LIS, University of California, Los Angeles
-
Subject access : preparing for the future. Conference on August 20 - 21, 2009 in Florence, the IFLA Classification and Indexing Section sponsored an IFLA satellite conference entitled "Looking at the Past and Preparing for the Future" (2011)
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- Abstract
- This volume contains the proceedings of a special conference held in Florence, August 2009. The theoretical and methodological aspects of rethinking semantic access to information and knowledge are explored. Innovative projects deployed to cope with the challenges of the future are presented and discussed. This book offers a unique opportunity for librarians and other information professionals to get acquainted with the state of the art in subject indexing.
- Content
- Inhalt: Introduction -- Focusing on user needs :new ways of subject access in Czechia -- Subject analysis and indexing :an "Italian version" of the analytico-synthetic model -- Subject search in Italian OPACs :an opportunity in waiting? -- Semiautomatic merging of two universal thesauri :the case of Estonia -- 20 years SWD :German subject authority data prepared for the future -- Mixed translations of the DDC :design, usability, and implications for knowledge organization in multilingual environments -- Animals belonging to the emperor :enabling viewpoint warrant in classification -- Dewey in Sweden :leaving SAB after 87 years -- Enhancing information services using machine-to-machine terminology services -- Social bookmarking and subject indexing -- Social indexing at the Stockholm Public Library -- The Nuovo Soggettario Thesaurus :structural features and web application projects -- Jzyk Hasel Przedmiotowych Biblioteki Narodowej (National Library of Poland Subject Headings) :from card catalogs to Digital Library :some questions about the future of a Local Subject Heading Systems in the changing world of information retrieval -- FAST headings as tags for WorldCat
- Series
- IFLA series on bibliographic control; vol. 42
-
Yee, M.: Headings for tomorrow : public access display of subject headings (1992)
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- Abstract
- This short guide is intended to help librarians and OPAC system designers to make decisions about the design of displays of more than one subject heading. The authors stress that they offer guidance rather than standards or prescriptions; their clear prose is cautious and even the number of recommendations is limited. A 12-page introduction contrasts the "structural approach" and "strict alphabetical approach" to filing, showing examples and stating arguments for each. 7 chapters cover display of subdivisions, inverted headings, display of qualified headings, arrangement of numerical headings, display of subjects interfiled with names and titles, punctuation and messages to the user. Within each chapter, questions involving choices between two or more approaches are followed by brief statements of current practice (LC rules, ALA rules, and systems in existing OPACs) extensive examples demonstrating such choices, and arguments for and against each. The authors warn against ever assuming that the user knows the needed subject headings, and acknowledge that the best OPAC design often depends on the setting and on the user's understanding of the system. Although the topic may be beyond the purview of the authoring committee, the discussion here makes one yearn for interactive OPACs that can analyze the user's needs and provide appropriate guidance to whatever system is adopted
- Editor
- Subcommittee on the Display of Subject Headings in Subject Indexes in OPACs, Subject Analysis Committee, Cataloging and Classification Section, ALCTS, ALA
- LCSH
- Information display systems / Formatting
- Subject
- Information display systems / Formatting
-
Markey, K.: Thus spoke the OPAC user (1993)
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- Abstract
- Reports on the results of focused group interviews conducted by OCLC of library users and OPACs. Library users, library public and technical services staff at six libraries were interviewed. Details their neeeds and perceptions
- Footnote
- Reprinted from: Information technology and libraries 2(1983) no.4, S.381-387
- Source
- Information technology and libraries. 12(1993) no.1, S.87-92
-
Beaulieu, M.; Payne, A.; Do, T.; Jones, S.: ENQUIRE Okapi project (1996)
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- Abstract
- The ENQUIRE project forms part of a series of investigations on query expansion in the Okapi experimental text retrieval system. A configurable user interface was implemented as an evaluative tool and tested in two locations on two different databases: the library catalogue of The London Business SChool and the computing section of INSPEC. The system offered a range of possible strategies based on thesaural terms for reformulating queries. These could be initiated automatically by the system or interactively with the user. The formative phase of the evaluation established the appropriateness and usability of the interface as well as users' perceptions of the underlying functionality. The aim of the large scale field trial was to determine to what extent user would select thesaural terms suggested by the system to reformulate queries, and to evaluate the effectiveness of a new dynamic form of query expansion implemented for this project
-
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.
- Content
- "Most Web search engines accept natural language queries, perform some kind of fuzzy matching and produce ranked output, displaying first the documents that are most likely to be relevant. On the other hand, most library online public access catalogs (OPACs) an the Web are still Boolean retrieval systems that perform exact matching, and require users to express their search requests precisely in a Boolean search language and to refine their search statements to improve the search results. It is well-documented that users have difficulty searching Boolean OPACs effectively (e.g. Borgman, 1996; Ensor, 1992; Wallace, 1993). One approach to making OPACs easier to use is to develop a natural language search interface that acts as a middleware between the user's Web browser and the OPAC system. The search interface can accept a natural language query from the user and reformulate it as a series of Boolean search statements that are then submitted to the OPAC. The records retrieved by the OPAC are ranked by the search interface before forwarding them to the user's Web browser. The user, then, does not need to interact directly with the Boolean OPAC but with the natural language search interface or search intermediary. The search interface interacts with the OPAC system an the user's behalf. The advantage of this approach is that no modification to the OPAC or library system is required. Furthermore, the search interface can access multiple OPACs, acting as a meta search engine, and integrate search results from various OPACs before sending them to the user. The search interface needs to incorporate a method for converting the user's natural language query into a series of Boolean search statements, and for ranking the OPAC records retrieved. The purpose of this study was to develop a relevancyranking algorithm for a search interface to Boolean OPAC systems. This is part of an on-going effort to develop a knowledge-based search interface to OPACs called the E-Referencer (Khoo et al., 1998, 1999; Poo et al., 2000). E-Referencer v. 2 that has been implemented applies a repertoire of initial search strategies and reformulation strategies to retrieve records from OPACs using the Z39.50 protocol, and also assists users in mapping query keywords to the Library of Congress subject headings."
- Source
- Electronic library. 22(2004) no.2, S.112-120
-
Borgman, C.L.; Chignell, M.H.; Valdez, F.: Designing an information retrieval interface based on children's categorization of knowledge : a pilot study (1989)
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- Abstract
- The study assessed the ability of children to categorise concepts that will be used to organise an information retrieval interface. The work was done of Project SEED (Science for Early Educational Development), a project to develop hands-on science programmes for elementary schools. Aims to tailor an interface to the particular skills of children in organising science knowledge. The results are promising for the design of IR interfaces based on children's abilities to manipulate information.
- Imprint
- Medford, New Jersey : Learned Information
- Source
- ASIS'89. Managing information and technology. Proceedings of the 52nd annual meeting of the American Society for Information Science, Washington, D.C., 30.10.-2.11.1989. Vol. 26. Ed. by J. Katzer and G.B. Newby
-
Cherry, J.M.; Clinton, M.: ¬An experimental investigation of two types of instruction for OPAC users (1991)
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- Abstract
- Reports an investigation into the feasibility of usinf tutorials to train students to use on-line public access catalogues (OPACs). The library developed instructional software which conveys a conceptual model of an on-line catalogue and how it works. Reports the results of an experiment conducted to compare the effectiveness of the computer tutorial and the standard introductory classroom lecture on using the OPAC at the University of Toronto
- Source
- Canadian journal of information science. 16(1991) no.4, S.2-22
-
Fieldhouse, M.; Hancock-Beaulieu, M.: ¬The design of a graphical user interface for a highly interactive information retrieval system (1996)
0.05
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- Abstract
- Reports on the design of a GUI for the Okapi 'best match' retrieval system developed at the Centre for Interactive Systems Research, City University, UK, for online library catalogues. The X-Windows interface includes an interactive query expansion (IQE) facilty which involves the user in the selection of query terms to reformulate a search. Presents the design rationale, based on a game board metaphor, and describes the features of each of the stages of the search interaction. Reports on the early operational field trial and discusses relevant evaluation issues and objectives
- 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
-
Davis, E.; Stone, J.: ¬A painless route on to the Web : Web services 1: The Royal Postgraduate Medical School (1997)
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- Date
- 29. 7.1998 21:22:27
- Source
- Library technology. 2(1997) no.4, S.77-78
-
Pasenen-Tuomainen, I.: Monitoring online catalogiues in the Nordic technological libraries (1992)
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- Abstract
- Describes a project concerning the monitoring of the OPACs of Helsinki University of Technology Library, Danish Technological Library, and the Norway Technical Library. The project aimed to promote end use accessibility to information in OPACs by gathering valid information about the user interaction with theses systems. Information was gathered by analysing the transaction logs recorded in the various OPACs
- Source
- Technology and competence. Proc. of the 8th Nordic Conference on Information and Documentation, Helsinborg, 19.-21.5.1992. Ed. by Karin Adler et al
-
Broadbent, E.: ¬The online catalog : dictionary, classified, or both? (1989)
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- Abstract
- The main purpose of the study was to determine if the online catalog can function both as a dictionary and classified catalog without requiring additional time or intellectual effort on the part of the cataloger. A total of 1842 MARC bibliographic records listed in the 370-379 classified section of American Book Publishing Record were studied. These records displayed 2735 subject headings. Of these, 1491 (55%) had a Library of Congress classification number linked to them. An alphabetical and classified index was created using primary subjects and their related classification numbers. While such an index could be a useful browsing device if integrated into an online catalog, creating a bona fide classified catalog would require assigning classification numbers to the secondary subject headings.
-
Pasanen-Tuomainen, I.: Does access meet availability at an OPAC? (1993)
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- Abstract
- Paper presented at the 1992 IATUL seminar in Tallinn, estonia: 'Universal Availability of Publications in Science and Technology including those on the history and philosophy of grey literature' on UAP policy and practice. Discusses surveys conducted at the Helsinki Univ. of Technology Library analysing the use of the online catalogue. Covers the Internordic Study 'Monitoring the Online Catalogues of the Nordic Technical University Libraries', whose aim was the promotion of end-user accessibility to information as part of a training program. Users' search behaviour was observed during the course on the library's TENTTU information retrieval system. Analyses the transaction log files of end users. Presents statistics on the distribution of search elements in free text and field codes and the use of Boolean operators. Comments on a software package enabling analysis of the interaction between the system and the end user. This may be useful to evaluate training programs
-
Hancock-Beaulieu, M.: Searching behaviour and the evaluation of online catalogues (1991)
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- Abstract
- Presents a brief report on a study, carried out by the Centre for Interactive Systems Research, City University, to investigate the techniques used for evaluating OPACs: to explore and assess different data gathering methods in studying information seeking behaviour at the on-line catalogue; and to examine how a transaction logging facility could be enhanced to serve as a more effective diagnostic tool. For a full report see British Library research paper 78
- Pages
- S.20-22
-
Ensor, P.: User practices in keyword and Boolean searching on an online public access catalog (1992)
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- Abstract
- Keyword and Boolean searching modes are now becoming more commonly available on online public access catalogs, and questions have arisen regarding their use by library patrons. How difficult do users perceive these searches to be? Do those who use them tend to rely on them all the time to the exclusion of all other methods? This study attempts to provide answers to these questions in the context of an academic library that uses the Northwestern Online Total Integrated System Online catalog
- Source
- Information technology and libraries. 11(1992) no.3, S.210-219
-
Pu, H.-T.: Exploration of personalized information service for OPAC (1997)
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- Abstract
- Library OPACs have long been the gateways between users and information. They present to users the achievements of library automation, and are the most widely available automated retrieval systems and the first that many user encounter. Current trends in OPAC design are toward a user oriented, individual information service which can meet the different needs of users with a variety of background and interests. Compared with the rather inactive, short term and general information service of conventional systems, this type of system focuses on active, long term and personalized service. Proposes a framework for the design of such an OPAC and discusses some recent developments in personalized information service
- Date
- 4. 8.1998 19:36:22
