Search (2 results, page 1 of 1)

  • × author_ss:"Rijsbergen, C.J. van"
  • × language_ss:"e"
  • × 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) 0.01 
    0.008169088 = product of:
  0.016338175 = sum of:
    0.016338175 = product of:
      0.049014524 = sum of:
        0.049014524 = weight(_text_:22 in 5002) [ClassicSimilarity], result of:
          0.049014524 = score(doc=5002,freq=2.0), product of:
            0.15835609 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.045220956 = 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)
      0.33333334 = coord(1/3)
  0.5 = coord(1/2)
    Date
    19. 3.1996 11:22:12
  2. Sparck Jones, K.; Rijsbergen, C.J. van: Progress in documentation : Information retrieval test collection (1976) 0.01 
    0.0074280365 = product of:
  0.014856073 = sum of:
    0.014856073 = product of:
      0.04456822 = sum of:
        0.04456822 = weight(_text_:k in 4161) [ClassicSimilarity], result of:
          0.04456822 = score(doc=4161,freq=2.0), product of:
            0.16142878 = queryWeight, product of:
              3.569778 = idf(docFreq=3384, maxDocs=44218)
              0.045220956 = 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)
  0.5 = coord(1/2)