Search (3 results, page 1 of 1)

  • × author_ss:"Rijsbergen, C.J. van"
  • × theme_ss:"Retrievalalgorithmen"
  1. Smeaton, A.F.; Rijsbergen, C.J. van: ¬The retrieval effects of query expansion on a feedback document retrieval system (1983) 0.04
    0.037246615 = product of:
      0.07449323 = sum of:
        0.07449323 = product of:
          0.111739844 = sum of:
            0.01611143 = weight(_text_:e in 2134) [ClassicSimilarity], result of:
              0.01611143 = score(doc=2134,freq=2.0), product of:
                0.072465695 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.05041548 = queryNorm
                0.2223318 = fieldWeight in 2134, 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=2134)
            0.09562842 = weight(_text_:22 in 2134) [ClassicSimilarity], result of:
              0.09562842 = score(doc=2134,freq=2.0), product of:
                0.17654641 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.05041548 = queryNorm
                0.5416616 = fieldWeight in 2134, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.109375 = fieldNorm(doc=2134)
          0.6666667 = coord(2/3)
      0.5 = coord(1/2)
    
    Date
    30. 3.2001 13:32:22
    Language
    e
  2. Rijsbergen, C.J. van: ¬A fast hierarchic clustering algorithm (1970) 0.00
    0.0030688436 = product of:
      0.0061376872 = sum of:
        0.0061376872 = product of:
          0.018413061 = sum of:
            0.018413061 = weight(_text_:e in 3300) [ClassicSimilarity], result of:
              0.018413061 = score(doc=3300,freq=2.0), product of:
                0.072465695 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.05041548 = queryNorm
                0.2540935 = fieldWeight in 3300, 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=3300)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Language
    e
  3. Sembok, T.M.T.; Rijsbergen, C.J. van: IMAGING: a relevant feedback retrieval with nearest neighbour clusters (1994) 0.00
    0.0015344218 = product of:
      0.0030688436 = sum of:
        0.0030688436 = product of:
          0.009206531 = sum of:
            0.009206531 = weight(_text_:e in 1071) [ClassicSimilarity], result of:
              0.009206531 = score(doc=1071,freq=2.0), product of:
                0.072465695 = queryWeight, product of:
                  1.43737 = idf(docFreq=28552, maxDocs=44218)
                  0.05041548 = queryNorm
                0.12704675 = fieldWeight in 1071, 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=1071)
          0.33333334 = coord(1/3)
      0.5 = coord(1/2)
    
    Language
    e