Search (16 results, page 1 of 1)

  • × author_ss:"Robertson, S.E."
  • × year_i:[1990 TO 2000}
  1. Robertson, S.E.; Hancock-Beaulieu, M.M.: On the evaluation of IR systems (1992) 0.00
    0.0042019994 = product of:
      0.008403999 = sum of:
        0.008403999 = product of:
          0.016807998 = sum of:
            0.016807998 = weight(_text_:e in 2619) [ClassicSimilarity], result of:
              0.016807998 = score(doc=2619,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.2540935 = fieldWeight in 2619, 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=2619)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  2. Hancock-Beaulieu, M.; Robertson, S.E.; Neilson, C.: Evaluation of online catalogues : an assessment of methods (1990) 0.00
    0.0036767495 = product of:
      0.007353499 = sum of:
        0.007353499 = product of:
          0.014706998 = sum of:
            0.014706998 = weight(_text_:e in 5262) [ClassicSimilarity], result of:
              0.014706998 = score(doc=5262,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.2223318 = fieldWeight in 5262, 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=5262)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  3. 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
  4. 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
  5. Robertson, S.E.: OKAPI at TREC (1994) 0.00
    0.0026262498 = product of:
      0.0052524996 = sum of:
        0.0052524996 = product of:
          0.010504999 = sum of:
            0.010504999 = weight(_text_:e in 7952) [ClassicSimilarity], result of:
              0.010504999 = score(doc=7952,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.15880844 = fieldWeight in 7952, 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=7952)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  6. Robertson, S.E.: OKAPI at TREC-1 (1994) 0.00
    0.0026262498 = product of:
      0.0052524996 = sum of:
        0.0052524996 = product of:
          0.010504999 = sum of:
            0.010504999 = weight(_text_:e in 7953) [ClassicSimilarity], result of:
              0.010504999 = score(doc=7953,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.15880844 = fieldWeight in 7953, 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=7953)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  7. Robertson, S.E.: On term selection for query expansion (1990) 0.00
    0.0021009997 = product of:
      0.0042019994 = sum of:
        0.0042019994 = product of:
          0.008403999 = sum of:
            0.008403999 = weight(_text_:e in 2650) [ClassicSimilarity], result of:
              0.008403999 = score(doc=2650,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.12704675 = fieldWeight in 2650, 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=2650)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  8. Robertson, S.E.: Query-document symmetry and dual models (1994) 0.00
    0.0021009997 = product of:
      0.0042019994 = sum of:
        0.0042019994 = product of:
          0.008403999 = sum of:
            0.008403999 = weight(_text_:e in 8159) [ClassicSimilarity], result of:
              0.008403999 = score(doc=8159,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.12704675 = fieldWeight in 8159, 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=8159)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  9. Robertson, S.E.; Beaulieu, M.: Research and evaluation in information retrieval (1997) 0.00
    0.0021009997 = product of:
      0.0042019994 = sum of:
        0.0042019994 = product of:
          0.008403999 = sum of:
            0.008403999 = weight(_text_:e in 7445) [ClassicSimilarity], result of:
              0.008403999 = score(doc=7445,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.12704675 = fieldWeight in 7445, 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=7445)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  10. MacFarlane, A.; Robertson, S.E.; McCann, J.A.: Parallel computing in information retrieval : an updated review (1997) 0.00
    0.0021009997 = product of:
      0.0042019994 = sum of:
        0.0042019994 = product of:
          0.008403999 = sum of:
            0.008403999 = weight(_text_:e in 7450) [ClassicSimilarity], result of:
              0.008403999 = score(doc=7450,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.12704675 = fieldWeight in 7450, 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=7450)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  11. Robertson, S.E.: Overview of the Okapi projects (1997) 0.00
    0.0021009997 = product of:
      0.0042019994 = sum of:
        0.0042019994 = product of:
          0.008403999 = sum of:
            0.008403999 = weight(_text_:e in 4703) [ClassicSimilarity], result of:
              0.008403999 = score(doc=4703,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.12704675 = fieldWeight in 4703, 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=4703)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  12. Robertson, S.E.; Walker, S.; Beaulieu, M.: Laboratory experiments with Okapi : participation in the TREC programme (1997) 0.00
    0.0018383748 = product of:
      0.0036767495 = sum of:
        0.0036767495 = product of:
          0.007353499 = sum of:
            0.007353499 = weight(_text_:e in 2216) [ClassicSimilarity], result of:
              0.007353499 = score(doc=2216,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.1111659 = fieldWeight in 2216, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=2216)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  13. Robertson, S.E.; Walker, S.; Hancock-Beaulieu, M.M.: Large test collection experiments of an operational, interactive system : OKAPI at TREC (1995) 0.00
    0.0018383748 = product of:
      0.0036767495 = sum of:
        0.0036767495 = product of:
          0.007353499 = sum of:
            0.007353499 = weight(_text_:e in 6964) [ClassicSimilarity], result of:
              0.007353499 = score(doc=6964,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.1111659 = fieldWeight in 6964, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=6964)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  14. Robertson, S.E.: OKAPI at TREC-3 (1995) 0.00
    0.0018383748 = product of:
      0.0036767495 = sum of:
        0.0036767495 = product of:
          0.007353499 = sum of:
            0.007353499 = weight(_text_:e in 5694) [ClassicSimilarity], result of:
              0.007353499 = score(doc=5694,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.1111659 = fieldWeight in 5694, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=5694)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  15. Huang, X.; Robertson, S.E.: Application of probilistic methods to Chinese text retrieval (1997) 0.00
    0.0018383748 = product of:
      0.0036767495 = sum of:
        0.0036767495 = product of:
          0.007353499 = sum of:
            0.007353499 = weight(_text_:e in 4706) [ClassicSimilarity], result of:
              0.007353499 = score(doc=4706,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.1111659 = fieldWeight in 4706, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=4706)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e
  16. Robertson, S.E.; Sparck Jones, K.: Simple, proven approaches to text retrieval (1997) 0.00
    0.0013131249 = product of:
      0.0026262498 = sum of:
        0.0026262498 = product of:
          0.0052524996 = sum of:
            0.0052524996 = weight(_text_:e in 4532) [ClassicSimilarity], result of:
              0.0052524996 = score(doc=4532,freq=2.0), product of:
                0.06614887 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.04602077 = queryNorm
                0.07940422 = fieldWeight in 4532, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=4532)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Language
    e