Search (85 results, page 2 of 5)

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Abstract

Reviews the literature of the Internet and WWW, since 1990, covering 446 references on the Internet and library and information services with particular reference to issues such as: academic libraries and scholarly research; collection development and cooperation; community colleges and networks; electronic publishing; document delivery and interloans; global and international networking; government information; Internet training; legal, ethical and security issues; OPACs; privatization and commercialization; public libraries; reference services; school libraries; special libraries; standards and protocols; and women, minorities, disabled and equality

Theme

Internet

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Theme

Internet

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Abstract

The Internet and related information services attract increasing interest from information retrieval researchers. A survey of recent publications shows that frequent topics are the effectiveness of search engines, information validation and quality, user studies, design of user interfaces, data structures and metadata, classification and vocabulary based aids, and indexing and search agents. Current research in these areas is briefly discussed. The changing balance between CD-ROM sources and traditional online searching is quite important and is noted

Theme

Internet

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Source

Bibliothek: Forschung und Praxis. 6(1982) H.3, S. - ; 7(1983) H.3, S. - ; 8(1984) H.3, S. - ; 9(1985) H.3, S. - ; 10(1986) S.354-357; 11(1987) S.322-324; 12(1988) S.378-381; 13(1989) S.304-306; 14(1990) S.396-397; 15(1991) S. - ; 16(1992) S.428-430; 17(1993) S.399-401; 18(1994) H.3, S.395-398; 19(1995) H.3, S. - ; 20(1996) H.3, S. - ; 21(1997) H.3, S.363-365; 23(1999) H.3, S.388-391

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Abstract

State of the art review of information retrieval systems, defined as systems retrieving documents a sopposed to numerical data. Explains the classic Cranfield studies that have served as a standard for retrieval testing since the 1960s and discusses the Cranfield model and its relevance based measures of retrieval effectiveness. Details sosme of the problems with the Cranfield instruments and issues of validity and reliability, generalizability, usefulness and basic concepts. Discusses the evaluation of the Internet search engines in light of the Cranfield model, noting the very real differences between batch systems (Cranfield) and interactive systems (Internet). Because the Internet collection is not fixed, it is impossible to determine recall as a measure of retrieval effectiveness. considers future directions in evaluating information retrieval systems

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Source

Internet reference services quarterly. 1(1996) no.2, S.111-121

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Abstract

State of the art review exploring the problem of bibliographic citations to resources that exist only in electronic form where the cited items may no longer be locatable at the URL indicated. Notes that the Internet is currently in a state of near chaos in terms of access and organization, while searching, usually performed with word based search engines, is generally not adequate for the needs of most users. Reviews strategies used by librarians for cataloguing and classifying information resources on the Internet. Techniques used include: automatic classification projects and classified subject trees, like the BUBL Subject Tree; CyberDewey, and the WWW Virtual Library. Considers OPAC like library catalogues such as the UK's CATRIONA Project and OCLC's InterCat. Explores retrieval tools used with concept analysis and other non traditional proposals, which include some library expertise, usually the use of one of the major library classifications. Pays particular attention to the UDC

Theme

Internet

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Abstract

State of the art review of the Net (the global telecommunications network as a whole) and the Internet with particular reference to the development of a coherent policy for those uisng these telecommunications facilities. Policy issues discussed include: standards, intellectual property; encryption, rules for transborder data flow; and data privacy. Considers their implications for individuals as well as government and commercial institutions. The review is limited to English language publications and explores specific issues that affect the structure of government, the economy and society, as well as those involved in the design of the net and looks at comparative and international issues. Concludes that the development of policies for the net is made difficult by the many different bodies of law that apply, by the fact that the relevant technologies are new and changing because that technologies are new and rapidly changing and because the net is global. Specific characteristics of the net require new thinking on a constitutional level, since information creation, processing, flows and use are constitutive forces in society

Theme

Internet

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Source

Bibliothek: Forschung und Praxis. 9(1985) H.2, S.205-214

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Date

9. 1.1999 18:29:29

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Abstract

The literature of the evaluation of Internet search engines is reviewed. Although there have been many studies, there has been little consistency in the way such studies have been carried out. This problem is exacerbated by the fact that recall is virtually impossible to calculate in the fast changing Internet environment, and therefore the traditional Cranfield type of evaluation is not usually possible. A variety of alternative evaluation methods has been suggested to overcome this difficulty. The authors recommend that a standardised set of tools is developed for the evaluation of web search engines so that, in future, comparisons can be made between search engines more effectively, and that variations in performance of any given search engine over time can be tracked. The paper itself does not provide such a standard set of tools, but it investigates the issues and makes preliminary recommendations of the types of tools needed

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Abstract

The purpose of this essay is to identify and explore the dynamics of the literature associated with the Dublin Core Workshop Series. The essay opens by identifying the problems that the Dublin Core Workshop Series is addressing, the status of the Internet at the time of the first workshop, and the contributions each workshop has made to the ongoing discussion. The body of the essay describes the characteristics of the literature, highlights key documents, and identifies the major researchers. The essay closes with evaluation of the literary trends and considerations of future research directions. The essay concludes that a shift from a descriptive emphasis to a more empirical form of literature is about to take place. Future research questions are identified in the areas of satisfying searcher needs, the impact of surrogate descriptions on search engine performance, and the effectiveness of surrogate descriptions in authenticating Internet resources.

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Abstract

The introduction and growth of the World Wide Web (WWW, or Web) have resulted in a profound change in the way individuals and organizations access information. In terms of volume, nature, and accessibility, the characteristics of electronic information are significantly different from those of even five or six years ago. Control of, and access to, this flood of information rely heavily an automated techniques for indexing and retrieval. According to Gudivada, Raghavan, Grosky, and Kasanagottu (1997, p. 58), "The ability to search and retrieve information from the Web efficiently and effectively is an enabling technology for realizing its full potential." Almost 93 percent of those surveyed consider the Web an "indispensable" Internet technology, second only to e-mail (Graphie, Visualization & Usability Center, 1998). Although there are other ways of locating information an the Web (browsing or following directory structures), 85 percent of users identify Web pages by means of a search engine (Graphie, Visualization & Usability Center, 1998). A more recent study conducted by the Stanford Institute for the Quantitative Study of Society confirms the finding that searching for information is second only to e-mail as an Internet activity (Nie & Ebring, 2000, online). In fact, Nie and Ebring conclude, "... the Internet today is a giant public library with a decidedly commercial tilt. The most widespread use of the Internet today is as an information search utility for products, travel, hobbies, and general information. Virtually all users interviewed responded that they engaged in one or more of these information gathering activities."

Theme

Internet

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Date

13. 7.2008 9:29:38

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Date

13. 7.2008 19:29:59

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Date

22. 1.2012 13:01:26

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Date

13. 7.2008 9:30:22

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Date

13. 7.2008 19:22:28

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Date

13. 7.2008 19:53:22

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Date

17.10.1996 14:22:33