Search (2 results, page 1 of 1)

  • × author_ss:"Rijsbergen, C.J. van"
  • × year_i:[1980 TO 1990}
  1. Smeaton, A.F.; Rijsbergen, C.J. van: ¬The retrieval effects of query expansion on a feedback document retrieval system (1983) 0.04 
    0.042863518 = product of:
  0.107158795 = sum of:
    0.06817353 = weight(_text_:u in 2134) [ClassicSimilarity], result of:
      0.06817353 = score(doc=2134,freq=2.0), product of:
        0.13460001 = queryWeight, product of:
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.041106213 = queryNorm
        0.50648975 = fieldWeight in 2134, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.109375 = fieldNorm(doc=2134)
    0.03898527 = product of:
      0.07797054 = sum of:
        0.07797054 = weight(_text_:22 in 2134) [ClassicSimilarity], result of:
          0.07797054 = score(doc=2134,freq=2.0), product of:
            0.14394696 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.041106213 = queryNorm
            0.5416616 = fieldWeight in 2134, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.109375 = fieldNorm(doc=2134)
      0.5 = coord(1/2)
  0.4 = coord(2/5)
    Date
    30. 3.2001 13:32:22
    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  2. Rijsbergen, C.J. van: ¬A non-classical logic for information retrieval (1986) 0.01 
    0.01168689 = product of:
  0.058434453 = sum of:
    0.058434453 = weight(_text_:u in 1933) [ClassicSimilarity], result of:
      0.058434453 = score(doc=1933,freq=2.0), product of:
        0.13460001 = queryWeight, product of:
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.041106213 = queryNorm
        0.43413407 = fieldWeight in 1933, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.2744443 = idf(docFreq=4547, maxDocs=44218)
          0.09375 = fieldNorm(doc=1933)
  0.2 = coord(1/5)
    Footnote
    Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgan Kaufmann. 1997. S.268-272.

Themes