Search (2 results, page 1 of 1)

  • × author_ss:"Robertson, S.E."
  • × theme_ss:"Retrievalalgorithmen"
  • × year_i:[1970 TO 1980}
  1. Robertson, S.E.: ¬The probability ranking principle in IR (1977) 0.00 
    0.0025524131 = product of:
  0.0051048263 = sum of:
    0.0051048263 = product of:
      0.010209653 = sum of:
        0.010209653 = weight(_text_:s in 1935) [ClassicSimilarity], result of:
          0.010209653 = score(doc=1935,freq=4.0), product of:
            0.05008241 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046063907 = queryNorm
            0.20385705 = fieldWeight in 1935, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.09375 = fieldNorm(doc=1935)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Footnote
    Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willet. San Francisco: Morgan Kaufmann 1997. S.281-286.
    Source
    Journal of documentation. 33(1977), S.294-304
  2. Robertson, S.E.; Belkin, N.J.: Ranking in principle (1978) 0.00 
    0.002406438 = product of:
  0.004812876 = sum of:
    0.004812876 = product of:
      0.009625752 = sum of:
        0.009625752 = weight(_text_:s in 1143) [ClassicSimilarity], result of:
          0.009625752 = score(doc=1143,freq=2.0), product of:
            0.05008241 = queryWeight, product of:
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.046063907 = queryNorm
            0.19219826 = fieldWeight in 1143, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.0872376 = idf(docFreq=40523, maxDocs=44218)
              0.125 = fieldNorm(doc=1143)
      0.5 = coord(1/2)
  0.5 = coord(1/2)
    Source
    Journal of documentation. 34(1978), S.93-100