Search (2 results, page 1 of 1)

  • × author_ss:"Rijsbergen, C.J. van"
  • × 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 
    0.023071049 = product of:
  0.069213144 = sum of:
    0.069213144 = product of:
      0.10381971 = sum of:
        0.05214439 = weight(_text_:29 in 5002) [ClassicSimilarity], result of:
          0.05214439 = score(doc=5002,freq=2.0), product of:
            0.1677086 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.047675814 = 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)
        0.05167532 = weight(_text_:22 in 5002) [ClassicSimilarity], result of:
          0.05167532 = score(doc=5002,freq=2.0), product of:
            0.16695258 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.047675814 = 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(1/3)
    Date
    19. 3.1996 11:22:12
    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 
    0.005220849 = product of:
  0.015662547 = sum of:
    0.015662547 = product of:
      0.04698764 = sum of:
        0.04698764 = weight(_text_:k in 4161) [ClassicSimilarity], result of:
          0.04698764 = score(doc=4161,freq=2.0), product of:
            0.17019208 = queryWeight, product of:
              3.569778 = idf(docFreq=3384, maxDocs=44218)
              0.047675814 = 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(1/3)
  0.33333334 = coord(1/3)