Search (25 results, page 1 of 2)

  • × author_ss:"Walker, S."
  1. Walker, S.: Improving subject access painlessly : recent work on the Okapi online catalogue projects (1988) 0.06
    0.05828543 = product of:
      0.11657086 = sum of:
        0.11657086 = sum of:
          0.016807998 = weight(_text_:e in 7403) [ClassicSimilarity], result of:
            0.016807998 = score(doc=7403,freq=2.0), product of:
              0.06614887 = queryWeight, product of:
                1.43737 = idf(docFreq=28552, maxDocs=44218)
                0.04602077 = queryNorm
              0.2540935 = fieldWeight in 7403, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                1.43737 = idf(docFreq=28552, maxDocs=44218)
                0.125 = fieldNorm(doc=7403)
          0.099762864 = weight(_text_:22 in 7403) [ClassicSimilarity], result of:
            0.099762864 = score(doc=7403,freq=2.0), product of:
              0.1611569 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.04602077 = 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)
    
    Language
    e
    Source
    Program. 22(1988), S.21-31
  2. Walker, S.: ¬The Okapi online catalogue research projects (1989) 0.04
    0.036428396 = product of:
      0.07285679 = sum of:
        0.07285679 = sum of:
          0.010504999 = weight(_text_:e in 1942) [ClassicSimilarity], result of:
            0.010504999 = score(doc=1942,freq=2.0), product of:
              0.06614887 = queryWeight, product of:
                1.43737 = idf(docFreq=28552, maxDocs=44218)
                0.04602077 = queryNorm
              0.15880844 = fieldWeight in 1942, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                1.43737 = idf(docFreq=28552, maxDocs=44218)
                0.078125 = fieldNorm(doc=1942)
          0.06235179 = weight(_text_:22 in 1942) [ClassicSimilarity], result of:
            0.06235179 = score(doc=1942,freq=2.0), product of:
              0.1611569 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.04602077 = 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)
    
    Date
    16. 8.1998 11:22:08
    Language
    e
  3. Walker, S.: Okapi : Evaluating and enhancing an experimental online catalog (1987) 0.00
    0.0042019994 = product of:
      0.008403999 = sum of:
        0.008403999 = product of:
          0.016807998 = sum of:
            0.016807998 = weight(_text_:e in 373) [ClassicSimilarity], result of:
              0.016807998 = score(doc=373,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.2540935 = fieldWeight in 373, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.125 = fieldNorm(doc=373)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  4. Walker, S.: Ease of use in online catalogues : a plea for the user (1986) 0.00
    0.0042019994 = product of:
      0.008403999 = sum of:
        0.008403999 = product of:
          0.016807998 = sum of:
            0.016807998 = weight(_text_:e in 375) [ClassicSimilarity], result of:
              0.016807998 = score(doc=375,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.2540935 = fieldWeight in 375, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.125 = fieldNorm(doc=375)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  5. Walker, S.: ¬The free language approach to online catalogues (1985) 0.00
    0.0042019994 = product of:
      0.008403999 = sum of:
        0.008403999 = product of:
          0.016807998 = sum of:
            0.016807998 = weight(_text_:e in 383) [ClassicSimilarity], result of:
              0.016807998 = score(doc=383,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.2540935 = fieldWeight in 383, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.125 = fieldNorm(doc=383)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  6. Walker, S.; Hancock-Beaulieu, M.: OKAPI at city : an evaluation facility for interactive IR (1991) 0.00
    0.0042019994 = product of:
      0.008403999 = sum of:
        0.008403999 = product of:
          0.016807998 = sum of:
            0.016807998 = weight(_text_:e in 2702) [ClassicSimilarity], result of:
              0.016807998 = score(doc=2702,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.2540935 = fieldWeight in 2702, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.125 = fieldNorm(doc=2702)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  7. Walker, S.: OCLC WorldCat collection sets (1998) 0.00
    0.0042019994 = product of:
      0.008403999 = sum of:
        0.008403999 = product of:
          0.016807998 = sum of:
            0.016807998 = weight(_text_:e in 5891) [ClassicSimilarity], result of:
              0.016807998 = score(doc=5891,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.2540935 = fieldWeight in 5891, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.125 = fieldNorm(doc=5891)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  8. Walker, S.; Jones, R.M.: Improving subject retrieval in online catalogues : T.1: Stemming, automatic spelling correction and cross-reference tables (1987) 0.00
    0.0036767495 = product of:
      0.007353499 = sum of:
        0.007353499 = product of:
          0.014706998 = sum of:
            0.014706998 = weight(_text_:e in 2141) [ClassicSimilarity], result of:
              0.014706998 = score(doc=2141,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.2223318 = fieldWeight in 2141, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.109375 = fieldNorm(doc=2141)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  9. Robertson, S.; Walker, S.: Threshold setting in adaptive filtering (2000) 0.00
    0.0036767495 = product of:
      0.007353499 = sum of:
        0.007353499 = product of:
          0.014706998 = sum of:
            0.014706998 = weight(_text_:e in 2835) [ClassicSimilarity], result of:
              0.014706998 = score(doc=2835,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.2223318 = fieldWeight in 2835, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.109375 = fieldNorm(doc=2835)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  10. Mitev, N.N.; Walker, S.: Information retrieval aids in an online public access catalogue : automatic intelligent search sequencing (1985) 0.00
    0.0031514994 = product of:
      0.006302999 = sum of:
        0.006302999 = product of:
          0.012605998 = sum of:
            0.012605998 = weight(_text_:e in 337) [ClassicSimilarity], result of:
              0.012605998 = score(doc=337,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.19057012 = fieldWeight in 337, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.09375 = fieldNorm(doc=337)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  11. Sparck Jones, K.; Walker, S.; Robertson, S.E.: ¬A probabilistic model of information retrieval : development and comparative experiments - part 1 (2000) 0.00
    0.0031514994 = product of:
      0.006302999 = sum of:
        0.006302999 = product of:
          0.012605998 = sum of:
            0.012605998 = weight(_text_:e in 4181) [ClassicSimilarity], result of:
              0.012605998 = score(doc=4181,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.19057012 = fieldWeight in 4181, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.09375 = fieldNorm(doc=4181)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  12. Sparck Jones, K.; Walker, S.; Robertson, S.E.: ¬A probabilistic model of information retrieval : development and comparative experiments - part 2 (2000) 0.00
    0.0031514994 = product of:
      0.006302999 = sum of:
        0.006302999 = product of:
          0.012605998 = sum of:
            0.012605998 = weight(_text_:e in 4286) [ClassicSimilarity], result of:
              0.012605998 = score(doc=4286,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.19057012 = fieldWeight in 4286, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.09375 = fieldNorm(doc=4286)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  13. Robertson, S.E.; Walker, S.; Beaulieu, M.: Experimentation as a way of life : Okapi at TREC (2000) 0.00
    0.0031514994 = product of:
      0.006302999 = sum of:
        0.006302999 = product of:
          0.012605998 = sum of:
            0.012605998 = weight(_text_:e in 6030) [ClassicSimilarity], result of:
              0.012605998 = score(doc=6030,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.19057012 = fieldWeight in 6030, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.09375 = fieldNorm(doc=6030)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  14. Robertson, S.E.; Walker, S.; Beaulieu, M.M.; Gatford, M.; Payne, A.: Okapi at TREC-4 (1996) 0.00
    0.0031514994 = product of:
      0.006302999 = sum of:
        0.006302999 = product of:
          0.012605998 = sum of:
            0.012605998 = weight(_text_:e in 7546) [ClassicSimilarity], result of:
              0.012605998 = score(doc=7546,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.19057012 = fieldWeight in 7546, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.09375 = fieldNorm(doc=7546)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  15. Beaulieu, M.M.; Gatford, M.; Huang, X.; Robertson, S.E.; Walker, S.; Williams, P.: Okapi an TREC-5 (1997) 0.00
    0.0031514994 = product of:
      0.006302999 = sum of:
        0.006302999 = product of:
          0.012605998 = sum of:
            0.012605998 = weight(_text_:e in 3097) [ClassicSimilarity], result of:
              0.012605998 = score(doc=3097,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.19057012 = fieldWeight in 3097, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.09375 = fieldNorm(doc=3097)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  16. Walker, S.; DeVere, R.: Improving subject retrieval in online catalogues : T.2: Relevance feedback and query expansion (1990) 0.00
    0.0026262498 = product of:
      0.0052524996 = sum of:
        0.0052524996 = product of:
          0.010504999 = sum of:
            0.010504999 = weight(_text_:e in 1816) [ClassicSimilarity], result of:
              0.010504999 = score(doc=1816,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.15880844 = fieldWeight in 1816, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.078125 = fieldNorm(doc=1816)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  17. Robertson, S.E.; Walker, S.: Some simple effective approximations to the 2-Poisson molde for probabilisitc weighted retrieval (1979) 0.00
    0.0026262498 = product of:
      0.0052524996 = sum of:
        0.0052524996 = product of:
          0.010504999 = sum of:
            0.010504999 = weight(_text_:e in 1940) [ClassicSimilarity], result of:
              0.010504999 = score(doc=1940,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.15880844 = fieldWeight in 1940, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.078125 = fieldNorm(doc=1940)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  18. Mitev, N.N.; Venner, G.M.; Walker, S.: Designing an online public access catalogue : OKAPI, a catalogue on a local area network (1985) 0.00
    0.0026262498 = product of:
      0.0052524996 = sum of:
        0.0052524996 = product of:
          0.010504999 = sum of:
            0.010504999 = weight(_text_:e in 435) [ClassicSimilarity], result of:
              0.010504999 = score(doc=435,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.15880844 = fieldWeight in 435, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.078125 = fieldNorm(doc=435)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  19. Walker, S.: Subject access in online catalogues (1991) 0.00
    0.0021009997 = product of:
      0.0042019994 = sum of:
        0.0042019994 = product of:
          0.008403999 = sum of:
            0.008403999 = weight(_text_:e in 5690) [ClassicSimilarity], result of:
              0.008403999 = score(doc=5690,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.12704675 = fieldWeight in 5690, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.0625 = fieldNorm(doc=5690)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  20. Ogden, J.; Summers, E.; Walker, S.: Know(ing) Infrastructure : the wayback machine as object and instrument of digital research (2023) 0.00
    0.0018570389 = product of:
      0.0037140779 = sum of:
        0.0037140779 = product of:
          0.0074281557 = sum of:
            0.0074281557 = weight(_text_:e in 1084) [ClassicSimilarity], result of:
              0.0074281557 = score(doc=1084,freq=4.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.112294525 = fieldWeight in 1084, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=1084)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e