Search (20 results, page 1 of 1)

  • × author_ss:"Lancaster, F.W."
  • × type_ss:"a"
  1. Lancaster, F.W.; Li, J.: ¬The law of constant accessibility of information (1988/89) 0.01 
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    Source
    Bulletin of the American Society for Information Science. 15(1988/89), S.24-25
    Theme
    Information
  2. Lancaster, F.W.: Evaluation of expert systems in information service applications (1994) 0.01 
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    Imprint
    Medford; NJ : Learned Information
    Source
    The economics of information. ASIS'94. Proc. 57th ASIS Annual Meeting, Alexandria, VA, Oct. 17-20, 1994. Ed.: B. Maxian
  3. Lancaster, F.W.; Gillespie, C.J.: Design and evaluation of information systems (1970) 0.01 
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    Source
    Annual review of information science and technology. 5(1970), S.33-70
  4. Lancaster, F.W.: Evaluation within the environment of an operating information service (1981) 0.01 
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    Source
    Information retrieval experiment. Ed.: K. Sparck Jones
  5. Lancaster, F.W.: Vocabulary control in information retrieval systems (1977) 0.00 
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  6. Lancaster, F.W.; Elliker, C.; Connell, T.H.: Subject analysis (1989) 0.00 
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    Source
    Annual review of information science and technology. 24(1989), S.35-84
  7. Lancaster, F.W.: Precision and recall (2009) 0.00 
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    Abstract
    F.W. Lancaster's work has been immensely influential in library and information science. He has written on indexing and information system evaluation, and has been looked to as a pioneer in many areas. Here he describes precision and recall, the two most fundamental and widespread measures of information retrieval effectiveness.
    Source
    Encyclopedia of library and information sciences. 3rd ed. Ed.: M.J. Bates
  8. Qin, J.; Lancaster, F.W.; Allen, B.: Types and levels of collaboration in interdisciplinary research in the sciences (1997) 0.00 
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    Abstract
    Reports on a study which collected a sample of 846 scientific research papers published in 1992 and tests 3 hypotheses on the relationship between research collaboration and interdisciplinarity. Results showed significant differences in degrees of interdisciplinarity among different levels of collaboration and among different disciplines. Collaboration contributed significantly to the degree of interdisciplinarity in some disciplines and not in others. Uses a survey that asked authors about their form of collaboration, channels of communication and use of information. The survey provides some qualitative explanation for the bibliometrics findings. Discusses the perspective of scientist-scientist interaction, scientist-information interaction and information-information interaction
    Source
    Journal of the American Society for Information Science. 48(1997) no.10, S.893-916
  9. Lancaster, F.W.: Has technology improved subject access? (199?) 0.00 
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    Footnote
    Vortrag an der FHBD 1994; Originalvortrag: International Conference on new Frontiers in Library and Information Services in Taipei, Taiwan, May 9-11, 1991
  10. Lancaster, F.W.: From custodian to knowledge engineer : the evolution of librarianship as a profession (1995) 0.00 
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    Abstract
    In the monastic library of the Middle Ages, the librarian was essentially a curator, a preserver of collections. For most of history libarians were little more than custodians. The idea of a librarian as a provider of services rather than a collector or preserver of materials, did not emerge until late in the 19th century. Computer and telecommunications technologies have revolutionized the library and greatly expanded the horizons of the librarian. Discusses the ways in which technology has affected the library profession and discusses the role of the librarian in the future. The librarian will increasingly become an information intermediary or information consultant and some will be knowledge engineers involved in the design and construction of information systems and in electronic publishing
    Source
    Journal of information; communication; and library science. 1(1995) no.4, S.3-8
  11. Lancaster, F.W.: MEDLARS : report on the evaluation of its operating effiency (1961) 0.00 
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    Footnote
    Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgan Kaufmann 1997. S.223-246.
  12. Lancaster, F.W.: Artificial intelligence, expert systems and the digital library (1996) 0.00 
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    Abstract
    Based partly on chapters in a forthcoming book 'Technology and Management in Library and Information Sciences' by F.W. Lancaster and B. Sandore. Some inportant functions of a research library operating largely in a networked digital environment are illustrated. The ability of artificial intelligence and expert system technologies to contribute to these functions is discussed, in the light of a report from the American Association for Artificial Intelligence, as well as experiences with these technologies in the library world and elsewhere
    Source
    Journal of information; communication; and library science. 3(1996) no.2, S.3-14
  13. Lancaster, F.W.: Libraries in the year 2001 (1993) 0.00 
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    Abstract
    Reviews the trend away from a paper based society and towards an electronic society: with the advent of computers, electronic mail, computer conferencing, electronic invisible colleges, and the application of computers to libraries and information networks, and to publishing, with the production of electronic media. Forecasts the advent of the electronic library and the electronic librarian, the decline in the use of present day libraries, technical and library services, and the enhanced and extended role of librarians in the new situation. Predicts the eventual demise of the traditional library with the exception of non research libraries but the enhanced value of the librarians as an information specialist
  14. Lancaster, F.W.: Networked electronic publishing of the results of scholarly research (1995) 0.00 
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    Source
    Information superhighway: the role of librarians, information scientists, and intermediaries. Festschrift in honor of Frederick Wilfred Lancaster. 17th International Essen Symposium, 24.-27.10.1994. Ed. A.H. Helal et al
  15. Lancaster, F.W.: Librarians, technology and mediocrity (1993) 0.00 
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    Abstract
    Two years ago the author gave a keynote talk at the Essen Symposium that suggested that technology has lulled librarians into a false sense of security and that there is no real evidence that the increasing use of technology has improved library services at all. This talk carries this theme one stage further, suggesting that technology may actually encourage mediocrity in library and information services
  16. Krooks, D.A.; Lancaster, F.W.: ¬The evolution of guidelines for thesaurus construction (1993) 0.00 
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    Abstract
    This piece of research traces the evolution of guidelines and principles for the construction of information retrieval thesauri from 1959 to 1993. We conclude that the majority of the basic problems of thesaurus construction has already been identified and solved by 1967 and that Eugene Wall, more than any other individual, has profoundly influenced the entire development in this area
  17. Lancaster, F.W.; Ulvila, J.W.; Humphrey, S.M.; Smith, L.C.; Allen, B.; Herner, S.: Evaluation of interactive knowledge-based systems : overview and design for empirical testing (1996) 0.00 
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    Source
    Journal of the American Society for Information Science. 47(1996) no.1, S.57-69
  18. Lancaster, F.W.: Trends in subject indexing from 1957 to 2000 (1980) 0.00 
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    Source
    New trends in documentation and information: proceedings of the 39th FID Congress, University of Edinburgh, 25-28 Sept 1978. Ed.: P.J. Taylor
  19. Lancaster, F.W.: Evaluating the performance of a large computerized information system (1985) 0.00 
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    Abstract
    F. W. Lancaster is known for his writing an the state of the art in librarylinformation science. His skill in identifying significant contributions and synthesizing literature in fields as diverse as online systems, vocabulary control, measurement and evaluation, and the paperless society have earned him esteem as a chronicler of information science. Equally deserving of repute is his own contribution to research in the discipline-his evaluation of the MEDLARS operating system. The MEDLARS study is notable for several reasons. It was the first large-scale application of retrieval experiment methodology to the evaluation of an actual operating system. As such, problems had to be faced that do not arise in laboratory-like conditions. One example is the problem of recall: how to determine, for a very large and dynamic database, the number of documents relevant to a given search request. By solving this problem and others attendant upon transferring an experimental methodology to the real world, Lancaster created a constructive procedure that could be used to improve the design and functioning of retrieval systems. The MEDLARS study is notable also for its contribution to our understanding of what constitutes a good index language and good indexing. The ideal retrieval system would be one that retrieves all and only relevant documents. The failures that occur in real operating systems, when a relevant document is not retrieved (a recall failure) or an irrelevant document is retrieved (a precision failure), can be analysed to assess the impact of various factors an the performance of the system. This is exactly what Lancaster did. He found both the MEDLARS indexing and the McSH index language to be significant factors affecting retrieval performance. The indexing, primarily because it was insufficiently exhaustive, explained a large number of recall failures. The index language, largely because of its insufficient specificity, accounted for a large number of precision failures. The purpose of identifying factors responsible for a system's failures is ultimately to improve the system. Unlike many user studies, the MEDLARS evaluation yielded recommendations that were eventually implemented.* Indexing exhaustivity was increased and the McSH index language was enriched with more specific terms and a larger entry vocabulary.
  20. Su, S.-F.; Lancaster, F.W.: Evaluation of expert systems in reference service applications (1995) 0.00 
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    Abstract
    Reports results of an evaluation of 2 expert systems designed for use in library reference services: ReferenceExpert (RE), developed by Houston University; and SourceFinder (SF), developed by Illinois University at Urbana-Champaign. The test group consisted of 60 graduate students at the initial stage of an intermediate level reference course. The evaluation involved test questions already used in an earlier study (College and research libraries 52(1991) no.5, S.454-465). Results indicated that: there was no significant difference between RE and SF students in the confidence they expressed regarding understanding of their test questions; no significant correlation was found between confidence in understanding the question and success in selecting appropriate sources; only 1/5 of the students agreed that the system they used could be considered 'intelligent'; the majority did not consider the system they used to be 'competent'; almost half agreed that the subject categories provided by the menus were too broad; a little more than half wer not satisfied with the information sources selected by their system; significantly more RE users than SF users agreed that they found the menu interface useful; and a keyword search capability was the feature most often mentioned as a needed system enhancement. Overall results indicated that current expert systems for the selection of reference sources cannot perform as well as experienced subject oriented reference librarians

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