Search (3 results, page 1 of 1)

  • × year_i:[1970 TO 1980}
  • × theme_ss:"Retrievalstudien"
  1. Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973) 0.12 
    0.11717118 = product of:
  0.23434237 = sum of:
    0.23434237 = sum of:
      0.18672761 = weight(_text_:c.j in 5002) [ClassicSimilarity], result of:
        0.18672761 = score(doc=5002,freq=2.0), product of:
          0.30463868 = queryWeight, product of:
            6.9347134 = idf(docFreq=116, maxDocs=44218)
            0.04392953 = queryNorm
          0.6129478 = fieldWeight in 5002, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            6.9347134 = idf(docFreq=116, maxDocs=44218)
            0.0625 = fieldNorm(doc=5002)
      0.047614757 = weight(_text_:22 in 5002) [ClassicSimilarity], result of:
        0.047614757 = score(doc=5002,freq=2.0), product of:
          0.15383372 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.04392953 = 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)
    Date
    19. 3.1996 11:22:12
  2. Rijsbergen, C.J. van: Foundations of evaluation (1974) 0.12 
    0.11670476 = product of:
  0.23340952 = sum of:
    0.23340952 = product of:
      0.46681905 = sum of:
        0.46681905 = weight(_text_:c.j in 1078) [ClassicSimilarity], result of:
          0.46681905 = score(doc=1078,freq=2.0), product of:
            0.30463868 = queryWeight, product of:
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.04392953 = queryNorm
            1.5323696 = fieldWeight in 1078, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.15625 = fieldNorm(doc=1078)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
  3. Sparck Jones, K.; Rijsbergen, C.J. van: Progress in documentation : Information retrieval test collection (1976) 0.04 
    0.040846664 = product of:
  0.08169333 = sum of:
    0.08169333 = product of:
      0.16338666 = sum of:
        0.16338666 = weight(_text_:c.j in 4161) [ClassicSimilarity], result of:
          0.16338666 = score(doc=4161,freq=2.0), product of:
            0.30463868 = queryWeight, product of:
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.04392953 = queryNorm
            0.5363293 = fieldWeight in 4161, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              6.9347134 = idf(docFreq=116, maxDocs=44218)
              0.0546875 = fieldNorm(doc=4161)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Authors