Search (12 results, page 1 of 1)

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Abstract

By the mid 1980s online bibliographic systems retrieved excessively large sets. Conversely, with standard Boolean systems, searches retrieved commonly nothing or too few records. In Nov. 92, 32% of searches yielded nothing from a retrieval set averaging 98. Offers solutions to these problems using MELVYL as a case study. Examines how non topical data such as date, language and location of document can improve topical searches. Explains OASIS and front end phototyping. Discusses adaptive retrieval, strategic commands, expanded retrieval and developments of OASIS. Covers aggregation of filtered sets, related terms, automatic progressive truncation, the SUMMARIZE LIBRARIES command, filing and filtering and collection analysis

Source

Library hi tech. 10(1992) no.4, S.7-22

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Source

Information technology and libraries. 6(1987) no.4, S.266

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Source

Information technology and libraries. 6(1987) no.2, S.83-88

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Source

Information technology and libraries. 11(1992), S.157-163

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Source

Library hi tech. 10(1992) no.4, S.7-22

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Abstract

Links commonly refer to models developed for the World Wide Web Consortium, but these are a special case within the wider field of links and references used in resource discovery, including subject indexes to classifications, relationships used in vocabulary control, and search term recommender services. There is a tension between standardised relationships (symbolized by Paul Otlet's modernist universalism and the Semantic Web) and the particular, subjective situations in which individuals try to make sense (symbolized by Ludwik Fleck's emphasis on the influence of local cultural contexts). A subject index to a classification is a collection of links, sometimes qualified by context. Different domains (specialties) have their own cultural contexts and benefit from differently tailored links even when searching within the same resources. Making links is a descriptive, language activity. Probabilistic methods can create links from familiar to unfamiliar vocabularies economically. Links commonly use a limited set of relationships, mainly equivalence, inclusion, and inheritance. A far wider range of relationships would help resource discovery. Extending resource discovery requires not only same-facet links to reach additional resources but also links across different facets to provide explanatory context.

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Abstract

Librarians have many and varied difficulties. For some library problems research is not the best remedy. Improved coordination, clarification of values, or drawing on existing research results may suffice. When research is indicated, it pays to be selective. Investing in research, like any other kind of investment, should be judged in terms of the probability of success, the likely delay before results are achieved, and the impact on the population of competent researchers, as well as the perceived importance of the problem. New technology permits new forms of service, generates new data for analysis, and supports new tools for researchers. Normal research is repetitious and progresses incrementally. A bolder strategy is to seek significant advances in library service by challenging researchers to achieve a deeper understanding of important, but inadequately understood, library phenomena. Five Grand Challenges are proposed: 1. Library service: Could library services be made more meaningful? 2. Library theory: Who knew what when? 3. Library design: Have digital libraries been designed backwards? 4. Library values: How neutral can libraries be? and 5. Library communities: How do communities differ?

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Abstract

A recent article by Joseph Buschman regrets that democratic theory is an unfinished idea. The argument appears to assume an essential relationship between library and information science (LIS) and democratic theory. Libraries services are important for undemocratic purposes also, and like other sociotechnical systems, partake on the cultural context in which they are deployed.

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Abstract

Purpose - The paper aims to explain the character and causes of obsolescence in assigned subject descriptors. Design/methodology/approach - The paper takes the form of a conceptual analysis with examples and reference to existing literature. Findings - Subject description comes in two forms: assigning the name or code of a subject to a document and assigning a document to a named subject category. Each method associates a document with the name of a subject. This naming activity is the site of tensions between the procedural need of information systems for stable records and the inherent multiplicity and instability of linguistic expressions. As languages change, previously assigned subject descriptions become obsolescent. The issues, tensions, and compromises involved are introduced. Originality/value - Drawing on the work of Robert Fairthorne and others, an explanation of the unavoidable obsolescence of assigned subject headings is presented. The discussion relates to libraries, but the same issues arise in any context in which subject description is expected to remain useful for an extended period of time.

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Imprint

Westport, Conn. : Libraries Unlimited

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Date

13. 6.1996 19:22:20

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Source

Knowledge organization in the 21st century: between historical patterns and future prospects. Proceedings of the Thirteenth International ISKO Conference 19-22 May 2014, Kraków, Poland. Ed.: Wieslaw Babik