Search (3 results, page 1 of 1)

  • × author_ss:"Rijsbergen, C.J. van"
  • × theme_ss:"Retrievalstudien"
  • × year_i:[1970 TO 1980}
  1. Rijsbergen, C.J. van: ¬A test for the separation of relevant and non-relevant documents in experimental retrieval collections (1973) 0.02 
    0.017948903 = product of:
  0.053846706 = sum of:
    0.0060165 = weight(_text_:e in 5002) [ClassicSimilarity], result of:
      0.0060165 = score(doc=5002,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.12704675 = fieldWeight in 5002, 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=5002)
    0.047830205 = product of:
      0.071745306 = sum of:
        0.03603473 = weight(_text_:29 in 5002) [ClassicSimilarity], result of:
          0.03603473 = score(doc=5002,freq=2.0), product of:
            0.11589616 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.03294669 = queryNorm
            0.31092256 = fieldWeight in 5002, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.0625 = fieldNorm(doc=5002)
        0.035710577 = weight(_text_:22 in 5002) [ClassicSimilarity], result of:
          0.035710577 = score(doc=5002,freq=2.0), product of:
            0.1153737 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03294669 = 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)
      0.6666667 = coord(2/3)
  0.33333334 = coord(2/6)
    Date
    19. 3.1996 11:22:12
    Language
    e
    Source
    Journal of documentation. 29(1973) no.3, S.251-257
  2. Sparck Jones, K.; Rijsbergen, C.J. van: Progress in documentation : Information retrieval test collection (1976) 0.01 
    0.01257852 = product of:
  0.03773556 = sum of:
    0.0052644373 = weight(_text_:e in 4161) [ClassicSimilarity], result of:
      0.0052644373 = score(doc=4161,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.1111659 = fieldWeight in 4161, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.0546875 = fieldNorm(doc=4161)
    0.03247112 = weight(_text_:k in 4161) [ClassicSimilarity], result of:
      0.03247112 = score(doc=4161,freq=2.0), product of:
        0.11761237 = queryWeight, product of:
          3.569778 = idf(docFreq=3384, maxDocs=44218)
          0.03294669 = queryNorm
        0.27608594 = fieldWeight in 4161, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.569778 = idf(docFreq=3384, maxDocs=44218)
          0.0546875 = fieldNorm(doc=4161)
  0.33333334 = coord(2/6)
    Language
    e
  3. Rijsbergen, C.J. van: Foundations of evaluation (1974) 0.00 
    0.002506875 = product of:
  0.01504125 = sum of:
    0.01504125 = weight(_text_:e in 1078) [ClassicSimilarity], result of:
      0.01504125 = score(doc=1078,freq=2.0), product of:
        0.047356583 = queryWeight, product of:
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.03294669 = queryNorm
        0.31761688 = fieldWeight in 1078, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.43737 = idf(docFreq=28552, maxDocs=44218)
          0.15625 = fieldNorm(doc=1078)
  0.16666667 = coord(1/6)
    Language
    e