Search (4 results, page 1 of 1)

  • × year_i:[1980 TO 1990}
  • × author_ss:"Robertson, S.E."
  1. Robertson, S.E.: ¬The methodology of information retrieval experiment (1981) 0.04 
    0.037297405 = product of:
  0.07459481 = sum of:
    0.07459481 = product of:
      0.11189221 = sum of:
        0.102394015 = weight(_text_:k in 3146) [ClassicSimilarity], result of:
          0.102394015 = score(doc=3146,freq=2.0), product of:
            0.16225883 = queryWeight, product of:
              3.569778 = idf(docFreq=3384, maxDocs=44218)
              0.04545348 = queryNorm
            0.63105357 = fieldWeight in 3146, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.569778 = idf(docFreq=3384, maxDocs=44218)
              0.125 = fieldNorm(doc=3146)
        0.009498195 = weight(_text_:s in 3146) [ClassicSimilarity], result of:
          0.009498195 = score(doc=3146,freq=2.0), product of:
            0.049418733 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.04545348 = queryNorm
            0.19219826 = fieldWeight in 3146, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.125 = fieldNorm(doc=3146)
      0.6666667 = coord(2/3)
  0.5 = coord(1/2)
    Pages
    S.9-31
    Source
    Information retrieval experiment. Ed.: K. Sparck Jones
  2. Bovey, J.D.; Robertson, S.E.: ¬An algorithm for weighted searching on a Boolean system (1984) 0.00 
    0.0013851533 = product of:
  0.0027703065 = sum of:
    0.0027703065 = product of:
      0.00831092 = sum of:
        0.00831092 = weight(_text_:s in 788) [ClassicSimilarity], result of:
          0.00831092 = score(doc=788,freq=2.0), product of:
            0.049418733 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.04545348 = queryNorm
            0.16817348 = fieldWeight in 788, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.109375 = fieldNorm(doc=788)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)
    Source
    Information technology: research and development. 3(1984) no.1, S.84-87
  3. Robertson, S.E.: Some recent theories and models in information retrieval (1980) 0.00 
    0.0011872743 = product of:
  0.0023745487 = sum of:
    0.0023745487 = product of:
      0.007123646 = sum of:
        0.007123646 = weight(_text_:s in 1326) [ClassicSimilarity], result of:
          0.007123646 = score(doc=1326,freq=2.0), product of:
            0.049418733 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.04545348 = queryNorm
            0.14414869 = fieldWeight in 1326, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.09375 = fieldNorm(doc=1326)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)
    Pages
    S.131-136
  4. Robertson, S.E.: On relevance weight estimation and query expansion (1986) 0.00 
    9.893953E-4 = product of:
  0.0019787906 = sum of:
    0.0019787906 = product of:
      0.0059363716 = sum of:
        0.0059363716 = weight(_text_:s in 3875) [ClassicSimilarity], result of:
          0.0059363716 = score(doc=3875,freq=2.0), product of:
            0.049418733 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.04545348 = queryNorm
            0.120123915 = fieldWeight in 3875, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.078125 = fieldNorm(doc=3875)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)
    Source
    Journal of documentation. 42(1986), S.182-188

Themes