Search (1 results, page 1 of 1)

  • × theme_ss:"Retrievalalgorithmen"
  • × theme_ss:"Semantisches Umfeld in Indexierung u. Retrieval"
  • × 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) 0.00 
    0.0018155434 = product of:
  0.018155433 = sum of:
    0.018155433 = product of:
      0.054466296 = sum of:
        0.054466296 = weight(_text_:22 in 2134) [ClassicSimilarity], result of:
          0.054466296 = score(doc=2134,freq=2.0), product of:
            0.1005541 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.028714733 = 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)
      0.33333334 = coord(1/3)
  0.1 = coord(1/10)
    Date
    30. 3.2001 13:32:22