Search (12 results, page 1 of 1)

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Abstract

Experiences with retrieval in OPACs suggest that there are major problems for the users of such systems, such as choosing the 'correct' subject access vocabulary, narrowing or broadening the set of items retrieved regarding the search interest. Such problems relate to two facts: (1) that in the early OPACs subject access has not been considered seriously enough and (2) that the complexity of the topic has not been really recognized. Using a typology of users' questions it is demonstrated which requirements musts be met by a successful online subject access. Improvements of subject access tools are primarily aimed at, pinpointing the interplay between the different subcomponents of any subject facility: a) the features of the indexing languages used; b) the indexing principles used; c) the design and structuring of the database; and d) the possibilities of the technical retrieval facility, the search mode, and query languages. The contribution summarizes the manifold interactions between the four subcomponents listed. Any successful retrieval will heavily depend on the design of these components considering their interactions.

Source

International Classification. 17(1990) no.2, S.66-76

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Abstract

Investigates current thinking on the theory and application of index language. Explains their links with on-line retrieval systems and the need to go beyond a narrow library application, identifying 2 regularly occurring points of view: transferring traditional ideas about conventional keyword catalogues to post-coordinate on-line searches and redundant terminology about input and its replacement by pure subject searching. Explores the general subject literature, the theory of verbal documentation languages, syntactical indexing, the thesaurus principle and faceted classification structure

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Abstract

Identifies the interest in questions of classified catalogues generated by the development of on-line catalogues, establishing a difference between 2 large areas: free access to information items in a systematic arrangement and expressing the contents of books by means of notational symbols in a classification system in a local catalogue. Examines the elements and structure of classification systems, the internationally important universal classifications, the procedures for book display and systematic processing in West German public libraries and exhibtion techniques in West German academic libraries. Covers universal and faceted classifications, as well as classification systems in on-line catalogues

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Abstract

The study of faceted classification systems has primarily been directed towards application for precombined catalogues or bibliographies, not so much for use in post coordinated retrieval systems. Argues that faceted classification systems in some respects are superior to other techniques of on-line retrieval as far as facet and concept analysis is combined with an expressive notational system in order to guide a form of retrieval which will use Boolean operators (for combining the facets regardless of one special citation order) and truncation for retrieving hierarchically different sets of documents. This point of view is demonstrated by 2 examples. The 1st one uses a short classification system derived from B. Buchanan and the 2nd is built upon the classification system used by Library and Information Science Abstracts (LISA). Further discussion is concerned with some possible consequences which could be derived from a retrieval with PRECIS strings
"Online retrieval" conjures up a very different mental image now than in 1991, the year this article was written, and the year Tim Berners-Lee first revealed the new hypertext system he called the World Wide Web. Gödert shows that truncation and Boolean logic, combined with notation from a faceted classification system, will be a powerful way of searching for information. It undoubtedly is, but no system built now would require a user searching for material on "nervous systems of bone fish" to enter "Fdd$ and Leaa$". This is worth reading for someone interested in seeing how searching and facets can go together, but the web has made this article quite out of date.

Source

International classification. 18(1991) no.2, S.98-109

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Abstract

The research, investigating experiences of users with subject searching of on-line public access catalogues (OPACs), stresses that there is an interaction between: features of the indexing languages used; indexing principles used; design and structure of the data base; and the possiblities of the technical retrieval faculty, search mode and query language used

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Abstract

Librarians in West Germany have thesauri for subject cataloguing through the use of Regeln fur den Schlagwortkatalog (RSWK - Subject Cataloguing Rules) with the Schlagwortnormdatei (SWD - Standard Keyword Data File). There is controversy over the terminological properties of standard keyword data files, over whether SWD is universal and whether inductive vocabulary construction is successful here. Some RSWK chain components have no separate semantic isentity and, although SWD has several aids for definition precision, semantic structures are not fully expressed. At present cooperative cataloguing partners using RSWK should use SWD with it as a starting point and think about possible improvements. RSWK with SWD is at present unsuitable for personal computers

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Abstract

In this paper a model for understanding the concept of information is presented and how the processes of externalization and perception of information by human beings could be understood. This model is different from the standard information theoretic model. It combines the understanding of cognitive information processing as an act of information generation from sense impressions with communication theoretic considerations. This approach can be of value for any system that is regarded as a knowledge system with an in-built ordering structure. As an application some consequences will be drawn for the design of information systems which claims to handle information itself (e.g. multimedia information systems) instead of giving references to bibliographic entities

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Abstract

Im Rahmen von MILOS II wurde das erste MILOS-Projekt zur automatischen Indexierung von Titeldaten um eine semantischer Komponente erweitert, indem Thesaurusrelationen der Schlagwortnormdatei eingebunden wurden. Der abschließend zur Evaluierung durchgeführte Retrievaltest und seine Ergebnisse stehen im Mittelpunkt dieses Texts. Zusätzlich wird ein Überblick über bereits durchgeführte Retrievaltests (vorwiegend des anglo-amerikanischen Raums) gegeben und es wird erläutert, welche grundlegenden Fragestellungen bei der praktischen Durchführung eines Retrievaltests zu beachten sind

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Abstract

Since the introduction of Regeln fur den Schlagwortkatalog (RSWK - Subject Cataloguing Rules) and the arrival of online public catalogues, librarians might ask whether number building is essential or whether the same result could be achieved with Boolean operators. Descriptive categories could be prepared, with word or phrase inversion, as a retrieval system component. The role of syntactic indexing in online retrieval and consequences for service interface ...

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Source

Die theoretische Ausbildung der Bibliotheksreferendare. Die Umsetzung der Empfehlungen für die Ausbildung des Höheren Bibliotheksdienstes an den Ausbildungseinrichtungen. Referate und Diskussionsergebnisse ... 22. und 23.11.1990 in Frankfurt/M. Hrsg.: J. Tehnzen

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Date

20. 4.2020 20:22:29

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Date

22. 3.2008 16:17:15