Search (4 results, page 1 of 1)

  • × author_ss:"Keen, E.M."
  • × theme_ss:"Retrievalstudien"
  1. Keen, E.M.: Aspects of computer-based indexing languages (1991) 0.08 
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    Abstract
    Comments on the relative rarity of research articles on theoretical aspects of subject indexing in computerised retrieval systems and the predominance of articles on software packages and hardware. Concludes that controlled indexing still has a future but points to major differences from the past
    Source
    Computers in libraries international 91. Proceedings of the 5th Annual Conference on Computers in Libraries, London, February 1991
  2. Keen, E.M.: Some aspects of proximity searching in text retrieval systems (1992) 0.04 
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    Abstract
    Describes and evaluates the proximity search facilities in external online systems and in-house retrieval software. Discusses and illustrates capabilities, syntax and circumstances of use. Presents measurements of the overheads required by proximity for storage, record input time and search time. The search strategy narrowing effect of proximity is illustrated by recall and precision test results. Usage and problems lead to a number of design ideas for better implementation: some based on existing Boolean strategies, one on the use of weighted proximity to automatically produce ranked output. A comparison of Boolean, quorum and proximate term pairs distance is included
    Source
    Journal of information science. 18(1992), S.89-98
  3. Keen, E.M.: Laboratory tests of manual systems (1981) 0.02 
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  4. Keen, E.M.; Hartley, R.J.: Phrase processing in text retrieval (1994) 0.02 
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    Abstract
    After introducing types of records, queries and text processing options, the features needed in software for phrase processing are identified and different approaches in current text retrieval research in the Text Retrieval Conference (TREC) projects are enumerated. Then follow eight observations on issues in phrase searching relating both to practice and to research, giving the authors' selection of crucial and controversial issues, supported by 21 references
    Source
    Journal of document and text management. 2(1994) no.1, S.23-34

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