Search (5 results, page 1 of 1)

  • × year_i:[1980 TO 1990}
  • × theme_ss:"Retrievalalgorithmen"
  1. Voorhees, E.M.: Implementing agglomerative hierarchic clustering algorithms for use in document retrieval (1986) 0.01
    0.010194313 = product of:
      0.04077725 = sum of:
        0.04077725 = product of:
          0.0815545 = sum of:
            0.0815545 = weight(_text_:22 in 402) [ClassicSimilarity], result of:
              0.0815545 = score(doc=402,freq=2.0), product of:
                0.13174312 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.037621226 = queryNorm
                0.61904186 = fieldWeight in 402, 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=402)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Source
    Information processing and management. 22(1986) no.6, S.465-476
  2. Smeaton, A.F.; Rijsbergen, C.J. van: ¬The retrieval effects of query expansion on a feedback document retrieval system (1983) 0.01
    0.008920024 = product of:
      0.035680097 = sum of:
        0.035680097 = product of:
          0.07136019 = sum of:
            0.07136019 = weight(_text_:22 in 2134) [ClassicSimilarity], result of:
              0.07136019 = score(doc=2134,freq=2.0), product of:
                0.13174312 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.037621226 = 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)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Date
    30. 3.2001 13:32:22
  3. Fuhr, N.: Ranking-Experimente mit gewichteter Indexierung (1986) 0.01
    0.0076457346 = product of:
      0.030582938 = sum of:
        0.030582938 = product of:
          0.061165877 = sum of:
            0.061165877 = weight(_text_:22 in 58) [ClassicSimilarity], result of:
              0.061165877 = score(doc=58,freq=2.0), product of:
                0.13174312 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.037621226 = queryNorm
                0.46428138 = fieldWeight in 58, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.09375 = fieldNorm(doc=58)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Date
    14. 6.2015 22:12:44
  4. Fuhr, N.: Rankingexperimente mit gewichteter Indexierung (1986) 0.01
    0.0076457346 = product of:
      0.030582938 = sum of:
        0.030582938 = product of:
          0.061165877 = sum of:
            0.061165877 = weight(_text_:22 in 2051) [ClassicSimilarity], result of:
              0.061165877 = score(doc=2051,freq=2.0), product of:
                0.13174312 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.037621226 = queryNorm
                0.46428138 = fieldWeight in 2051, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.09375 = fieldNorm(doc=2051)
          0.5 = coord(1/2)
      0.25 = coord(1/4)
    
    Date
    14. 6.2015 22:12:56
  5. Salton, G.; Buckley, C.: Term-weighting approaches in automatic text retrieval (1988) 0.01
    0.0052968836 = product of:
      0.021187535 = sum of:
        0.021187535 = product of:
          0.0635626 = sum of:
            0.0635626 = weight(_text_:k in 1938) [ClassicSimilarity], result of:
              0.0635626 = score(doc=1938,freq=2.0), product of:
                0.13429943 = queryWeight, product of:
                  3.569778 = idf(docFreq=3384, maxDocs=44218)
                  0.037621226 = queryNorm
                0.47329018 = fieldWeight in 1938, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.569778 = idf(docFreq=3384, maxDocs=44218)
                  0.09375 = fieldNorm(doc=1938)
          0.33333334 = coord(1/3)
      0.25 = coord(1/4)
    
    Footnote
    Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgan Kaufmann 1997. S.323-328.