Search (3 results, page 1 of 1)

  • × theme_ss:"Retrievalstudien"
  • × year_i:[1970 TO 1980}
  1. Cooper, W.S.: ¬The paradoxal role of unexamined documents in the evaluation of retrieval effectiveness (1976) 0.13 
    0.13004346 = product of:
  0.26008692 = sum of:
    0.26008692 = product of:
      0.52017385 = sum of:
        0.52017385 = weight(_text_:w.s in 2186) [ClassicSimilarity], result of:
          0.52017385 = score(doc=2186,freq=2.0), product of:
            0.35611558 = queryWeight, product of:
              8.2629 = idf(docFreq=30, maxDocs=44218)
              0.043098133 = queryNorm
            1.4606882 = fieldWeight in 2186, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              8.2629 = idf(docFreq=30, maxDocs=44218)
              0.125 = fieldNorm(doc=2186)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  2. Cooper, W.S.: ¬On selecting a measure of retrieval effectiveness, revisited (1973) 0.10 
    0.0975326 = product of:
  0.1950652 = sum of:
    0.1950652 = product of:
      0.3901304 = sum of:
        0.3901304 = weight(_text_:w.s in 1930) [ClassicSimilarity], result of:
          0.3901304 = score(doc=1930,freq=2.0), product of:
            0.35611558 = queryWeight, product of:
              8.2629 = idf(docFreq=30, maxDocs=44218)
              0.043098133 = queryNorm
            1.0955162 = fieldWeight in 1930, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              8.2629 = idf(docFreq=30, maxDocs=44218)
              0.09375 = fieldNorm(doc=1930)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  3. Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973) 0.01 
    0.011678403 = product of:
  0.023356806 = sum of:
    0.023356806 = product of:
      0.046713613 = sum of:
        0.046713613 = weight(_text_:22 in 5002) [ClassicSimilarity], result of:
          0.046713613 = score(doc=5002,freq=2.0), product of:
            0.15092231 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.043098133 = queryNorm
            0.30952093 = fieldWeight in 5002, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0625 = fieldNorm(doc=5002)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Date
    19. 3.1996 11:22:12

Authors