Search (4 results, page 1 of 1)

  • × author_ss:"Walker, S."
  • × theme_ss:"OPAC"
  1. Walker, S.; Jones, R.M.: Improving subject retrieval in online catalogues : T.1: Stemming, automatic spelling correction and cross-reference tables (1987) 0.03
    0.030234953 = product of:
      0.060469907 = sum of:
        0.060469907 = product of:
          0.12093981 = sum of:
            0.12093981 = weight(_text_:t in 2141) [ClassicSimilarity], result of:
              0.12093981 = score(doc=2141,freq=2.0), product of:
                0.19847474 = queryWeight, product of:
                  3.9394085 = idf(docFreq=2338, maxDocs=44218)
                  0.05038186 = queryNorm
                0.60934615 = fieldWeight in 2141, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.9394085 = idf(docFreq=2338, maxDocs=44218)
                  0.109375 = fieldNorm(doc=2141)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  2. Walker, S.: Improving subject access painlessly : recent work on the Okapi online catalogue projects (1988) 0.03
    0.027304186 = product of:
      0.05460837 = sum of:
        0.05460837 = product of:
          0.10921674 = sum of:
            0.10921674 = weight(_text_:22 in 7403) [ClassicSimilarity], result of:
              0.10921674 = score(doc=7403,freq=2.0), product of:
                0.17642869 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.05038186 = 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)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Source
    Program. 22(1988), S.21-31
  3. Walker, S.; DeVere, R.: Improving subject retrieval in online catalogues : T.2: Relevance feedback and query expansion (1990) 0.02
    0.021596396 = product of:
      0.043192793 = sum of:
        0.043192793 = product of:
          0.086385585 = sum of:
            0.086385585 = weight(_text_:t in 1816) [ClassicSimilarity], result of:
              0.086385585 = score(doc=1816,freq=2.0), product of:
                0.19847474 = queryWeight, product of:
                  3.9394085 = idf(docFreq=2338, maxDocs=44218)
                  0.05038186 = queryNorm
                0.43524727 = fieldWeight in 1816, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.9394085 = idf(docFreq=2338, maxDocs=44218)
                  0.078125 = fieldNorm(doc=1816)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
  4. Walker, S.: ¬The Okapi online catalogue research projects (1989) 0.02
    0.017065117 = product of:
      0.034130234 = sum of:
        0.034130234 = product of:
          0.06826047 = sum of:
            0.06826047 = weight(_text_:22 in 1942) [ClassicSimilarity], result of:
              0.06826047 = score(doc=1942,freq=2.0), product of:
                0.17642869 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.05038186 = 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)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    16. 8.1998 11:22:08