Search (8 results, page 1 of 1)

  • × author_ss:"Walker, S."
  • × theme_ss:"OPAC"
  • × type_ss:"a"
  1. Walker, S.: ¬The Okapi online catalogue research projects (1989) 0.06
    0.06471341 = product of:
      0.19414023 = sum of:
        0.19414023 = sum of:
          0.07342987 = weight(_text_:online in 1942) [ClassicSimilarity], result of:
            0.07342987 = score(doc=1942,freq=4.0), product of:
              0.1548489 = queryWeight, product of:
                3.0349014 = idf(docFreq=5778, maxDocs=44218)
                0.051022716 = queryNorm
              0.47420335 = fieldWeight in 1942, product of:
                2.0 = tf(freq=4.0), with freq of:
                  4.0 = termFreq=4.0
                3.0349014 = idf(docFreq=5778, maxDocs=44218)
                0.078125 = fieldNorm(doc=1942)
          0.051581617 = weight(_text_:retrieval in 1942) [ClassicSimilarity], result of:
            0.051581617 = score(doc=1942,freq=2.0), product of:
              0.15433937 = queryWeight, product of:
                3.024915 = idf(docFreq=5836, maxDocs=44218)
                0.051022716 = queryNorm
              0.33420905 = fieldWeight in 1942, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.024915 = idf(docFreq=5836, maxDocs=44218)
                0.078125 = fieldNorm(doc=1942)
          0.06912874 = weight(_text_:22 in 1942) [ClassicSimilarity], result of:
            0.06912874 = score(doc=1942,freq=2.0), product of:
              0.17867287 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.051022716 = queryNorm
              0.38690117 = fieldWeight in 1942, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.078125 = fieldNorm(doc=1942)
      0.33333334 = coord(1/3)
    
    Date
    16. 8.1998 11:22:08
    Footnote
    Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgan Kaufmann 1997. S.424-435.
    Source
    The Online catalogue: development and directions. Ed.: C. Hildreth
  2. Walker, S.: Improving subject access painlessly : recent work on the Okapi online catalogue projects (1988) 0.04
    0.043040536 = product of:
      0.1291216 = sum of:
        0.1291216 = product of:
          0.19368239 = sum of:
            0.0830764 = weight(_text_:online in 7403) [ClassicSimilarity], result of:
              0.0830764 = score(doc=7403,freq=2.0), product of:
                0.1548489 = queryWeight, product of:
                  3.0349014 = idf(docFreq=5778, maxDocs=44218)
                  0.051022716 = queryNorm
                0.5364998 = fieldWeight in 7403, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.0349014 = idf(docFreq=5778, maxDocs=44218)
                  0.125 = fieldNorm(doc=7403)
            0.110605985 = weight(_text_:22 in 7403) [ClassicSimilarity], result of:
              0.110605985 = score(doc=7403,freq=2.0), product of:
                0.17867287 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.051022716 = queryNorm
                0.61904186 = fieldWeight in 7403, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.125 = fieldNorm(doc=7403)
          0.6666667 = coord(2/3)
      0.33333334 = coord(1/3)
    
    Source
    Program. 22(1988), S.21-31
  3. Mitev, N.N.; Walker, S.: Information retrieval aids in an online public access catalogue : automatic intelligent search sequencing (1985) 0.03
    0.033298716 = product of:
      0.09989615 = sum of:
        0.09989615 = product of:
          0.14984421 = sum of:
            0.062307306 = weight(_text_:online in 337) [ClassicSimilarity], result of:
              0.062307306 = score(doc=337,freq=2.0), product of:
                0.1548489 = queryWeight, product of:
                  3.0349014 = idf(docFreq=5778, maxDocs=44218)
                  0.051022716 = queryNorm
                0.40237486 = fieldWeight in 337, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.0349014 = idf(docFreq=5778, maxDocs=44218)
                  0.09375 = fieldNorm(doc=337)
            0.08753691 = weight(_text_:retrieval in 337) [ClassicSimilarity], result of:
              0.08753691 = score(doc=337,freq=4.0), product of:
                0.15433937 = queryWeight, product of:
                  3.024915 = idf(docFreq=5836, maxDocs=44218)
                  0.051022716 = queryNorm
                0.5671716 = fieldWeight in 337, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  3.024915 = idf(docFreq=5836, maxDocs=44218)
                  0.09375 = fieldNorm(doc=337)
          0.6666667 = coord(2/3)
      0.33333334 = coord(1/3)
    
    Source
    Advances in intelligent retrieval: Proc. of a Conf. ... Wadham College, Oxford, 16.-17.4.1985. Intr.: M. Rowbottom
  4. Walker, S.: Subject access in online catalogues (1991) 0.02
    0.022199143 = product of:
      0.066597424 = sum of:
        0.066597424 = product of:
          0.09989613 = sum of:
            0.0415382 = weight(_text_:online in 5690) [ClassicSimilarity], result of:
              0.0415382 = score(doc=5690,freq=2.0), product of:
                0.1548489 = queryWeight, product of:
                  3.0349014 = idf(docFreq=5778, maxDocs=44218)
                  0.051022716 = queryNorm
                0.2682499 = fieldWeight in 5690, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.0349014 = idf(docFreq=5778, maxDocs=44218)
                  0.0625 = fieldNorm(doc=5690)
            0.058357935 = weight(_text_:retrieval in 5690) [ClassicSimilarity], result of:
              0.058357935 = score(doc=5690,freq=4.0), product of:
                0.15433937 = queryWeight, product of:
                  3.024915 = idf(docFreq=5836, maxDocs=44218)
                  0.051022716 = queryNorm
                0.37811437 = fieldWeight in 5690, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  3.024915 = idf(docFreq=5836, maxDocs=44218)
                  0.0625 = fieldNorm(doc=5690)
          0.6666667 = coord(2/3)
      0.33333334 = coord(1/3)
    
    Abstract
    Discusses some of the methods of subject access to on-line catalohues (OPACs) and argues that none are entirley satisfactory. Describes 2 methods for improving subject access: best match searching; and automatic query expansion application and discusses their feasibility. Mentions emerging application standards for information retrieval and concludes that existing standards are incompatible with most methods for improving standards
    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  5. Hancock-Beaulieu, M.; Walker, S.: ¬An evaluation of automatic query expansion in an online library catalogue (1992) 0.02
    0.01610068 = product of:
      0.04830204 = sum of:
        0.04830204 = product of:
          0.07245306 = sum of:
            0.03634593 = weight(_text_:online in 2731) [ClassicSimilarity], result of:
              0.03634593 = score(doc=2731,freq=2.0), product of:
                0.1548489 = queryWeight, product of:
                  3.0349014 = idf(docFreq=5778, maxDocs=44218)
                  0.051022716 = queryNorm
                0.23471867 = fieldWeight in 2731, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.0349014 = idf(docFreq=5778, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=2731)
            0.03610713 = weight(_text_:retrieval in 2731) [ClassicSimilarity], result of:
              0.03610713 = score(doc=2731,freq=2.0), product of:
                0.15433937 = queryWeight, product of:
                  3.024915 = idf(docFreq=5836, maxDocs=44218)
                  0.051022716 = queryNorm
                0.23394634 = fieldWeight in 2731, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.024915 = idf(docFreq=5836, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=2731)
          0.6666667 = coord(2/3)
      0.33333334 = coord(1/3)
    
    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  6. Walker, S.: Ease of use in online catalogues : a plea for the user (1986) 0.01
    0.0130541995 = product of:
      0.0391626 = sum of:
        0.0391626 = product of:
          0.11748779 = sum of:
            0.11748779 = weight(_text_:online in 375) [ClassicSimilarity], result of:
              0.11748779 = score(doc=375,freq=4.0), product of:
                0.1548489 = queryWeight, product of:
                  3.0349014 = idf(docFreq=5778, maxDocs=44218)
                  0.051022716 = queryNorm
                0.75872535 = fieldWeight in 375, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  3.0349014 = idf(docFreq=5778, maxDocs=44218)
                  0.125 = fieldNorm(doc=375)
          0.33333334 = coord(1/3)
      0.33333334 = coord(1/3)
    
    Source
    Online public access to library files. Ed.: J. Kinsella
  7. Walker, S.: Okapi : Evaluating and enhancing an experimental online catalog (1987) 0.01
    0.009230712 = product of:
      0.027692135 = sum of:
        0.027692135 = product of:
          0.0830764 = sum of:
            0.0830764 = weight(_text_:online in 373) [ClassicSimilarity], result of:
              0.0830764 = score(doc=373,freq=2.0), product of:
                0.1548489 = queryWeight, product of:
                  3.0349014 = idf(docFreq=5778, maxDocs=44218)
                  0.051022716 = queryNorm
                0.5364998 = fieldWeight in 373, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.0349014 = idf(docFreq=5778, maxDocs=44218)
                  0.125 = fieldNorm(doc=373)
          0.33333334 = coord(1/3)
      0.33333334 = coord(1/3)
    
  8. Walker, S.: ¬The free language approach to online catalogues (1985) 0.01
    0.009230712 = product of:
      0.027692135 = sum of:
        0.027692135 = product of:
          0.0830764 = sum of:
            0.0830764 = weight(_text_:online in 383) [ClassicSimilarity], result of:
              0.0830764 = score(doc=383,freq=2.0), product of:
                0.1548489 = queryWeight, product of:
                  3.0349014 = idf(docFreq=5778, maxDocs=44218)
                  0.051022716 = queryNorm
                0.5364998 = fieldWeight in 383, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.0349014 = idf(docFreq=5778, maxDocs=44218)
                  0.125 = fieldNorm(doc=383)
          0.33333334 = coord(1/3)
      0.33333334 = coord(1/3)