Search (5 results, page 1 of 1)

  • × year_i:[1990 TO 2000}
  • × author_ss:"Walker, S."
  1. Walker, S.: Views on classification as a search tool on a computer (1991) 0.04 
    0.04330567 = product of:
  0.08661134 = sum of:
    0.026799891 = weight(_text_:library in 4837) [ClassicSimilarity], result of:
      0.026799891 = score(doc=4837,freq=2.0), product of:
        0.1317883 = queryWeight, product of:
          2.6293786 = idf(docFreq=8668, maxDocs=44218)
          0.050121464 = queryNorm
        0.20335563 = fieldWeight in 4837, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.6293786 = idf(docFreq=8668, maxDocs=44218)
          0.0546875 = fieldNorm(doc=4837)
    0.059811447 = product of:
      0.11962289 = sum of:
        0.11962289 = weight(_text_:project in 4837) [ClassicSimilarity], result of:
          0.11962289 = score(doc=4837,freq=6.0), product of:
            0.21156175 = queryWeight, product of:
              4.220981 = idf(docFreq=1764, maxDocs=44218)
              0.050121464 = queryNorm
            0.5654278 = fieldWeight in 4837, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              4.220981 = idf(docFreq=1764, maxDocs=44218)
              0.0546875 = fieldNorm(doc=4837)
      0.5 = coord(1/2)
  0.5 = coord(2/4)
    Abstract
    Classification numbers and shelf marks may be useful in online searching. Ways of using classification in online searching include: direct classification searching; use of classification as linking devices or pivots; and direct or indirect searching of classification schedules and indexes. Discusses each of these techniques, mainly in the context of library OPAC searching although they may be applied to other types of online retrieval systems. The use of classification numbers as pivots enabling online searchers to retrieve related references by means of automation searching of identical or related classification numbers is reviewed with reference to the OKAPI project; BLCMP project and the DDC online project
  2. Walker, S.; Hancock-Beaulieu, M.: OKAPI at city : an evaluation facility for interactive IR (1991) 0.02 
    0.021657582 = product of:
  0.08663033 = sum of:
    0.08663033 = weight(_text_:library in 2702) [ClassicSimilarity], result of:
      0.08663033 = score(doc=2702,freq=4.0), product of:
        0.1317883 = queryWeight, product of:
          2.6293786 = idf(docFreq=8668, maxDocs=44218)
          0.050121464 = queryNorm
        0.65734464 = fieldWeight in 2702, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          2.6293786 = idf(docFreq=8668, maxDocs=44218)
          0.125 = fieldNorm(doc=2702)
  0.25 = coord(1/4)
    Imprint
    London : British Library
    Series
    British Library research report; 6056
  3. Walker, S.; DeVere, R.: Improving subject retrieval in online catalogues : T.2: Relevance feedback and query expansion (1990) 0.01 
    0.013535989 = product of:
  0.054143958 = sum of:
    0.054143958 = weight(_text_:library in 1816) [ClassicSimilarity], result of:
      0.054143958 = score(doc=1816,freq=4.0), product of:
        0.1317883 = queryWeight, product of:
          2.6293786 = idf(docFreq=8668, maxDocs=44218)
          0.050121464 = queryNorm
        0.4108404 = fieldWeight in 1816, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          2.6293786 = idf(docFreq=8668, maxDocs=44218)
          0.078125 = fieldNorm(doc=1816)
  0.25 = coord(1/4)
    Imprint
    London : British Library
    Series
    British Library research paper; 72
  4. Hancock-Beaulieu, M.; Walker, S.: ¬An evaluation of automatic query expansion in an online library catalogue (1992) 0.01 
    0.009475192 = product of:
  0.03790077 = sum of:
    0.03790077 = weight(_text_:library in 2731) [ClassicSimilarity], result of:
      0.03790077 = score(doc=2731,freq=4.0), product of:
        0.1317883 = queryWeight, product of:
          2.6293786 = idf(docFreq=8668, maxDocs=44218)
          0.050121464 = queryNorm
        0.28758827 = fieldWeight in 2731, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          2.6293786 = idf(docFreq=8668, maxDocs=44218)
          0.0546875 = fieldNorm(doc=2731)
  0.25 = coord(1/4)
    Abstract
    An automatic query expansion (AQE) facility in anonline catalogue was evaluated in an operational library setting. The OKAPI experimental system had other features including: ranked output 'best match' keyword searching, automatic stemming, spelling normalisation and cross referencing as well as relevance feedback. A combination of transaction log analysis, search replays, questionnaires and interviews was used for data collection. Findings show that contrary to previous results, AQE was beneficial in a substantial number of searches. Use intentions, the effectiveness of the 'best match' search and user interaction were identified as the main factors affecting the take-up of the query expansion facility
  5. Walker, S.: Subject access in online catalogues (1991) 0.01 
    0.0076571116 = product of:
  0.030628446 = sum of:
    0.030628446 = weight(_text_:library in 5690) [ClassicSimilarity], result of:
      0.030628446 = score(doc=5690,freq=2.0), product of:
        0.1317883 = queryWeight, product of:
          2.6293786 = idf(docFreq=8668, maxDocs=44218)
          0.050121464 = queryNorm
        0.23240642 = fieldWeight in 5690, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          2.6293786 = idf(docFreq=8668, maxDocs=44218)
          0.0625 = fieldNorm(doc=5690)
  0.25 = coord(1/4)
    Imprint
    London : British Library

Authors

Types

Themes