Search (2 results, page 1 of 1)

  • × 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) 0.05
    0.050091043 = product of:
      0.100182086 = sum of:
        0.012264997 = weight(_text_:e in 2134) [ClassicSimilarity], result of:
          0.012264997 = score(doc=2134,freq=2.0), product of:
            0.05516528 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.03837932 = queryNorm
            0.2223318 = fieldWeight in 2134, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.109375 = fieldNorm(doc=2134)
        0.06365104 = weight(_text_:u in 2134) [ClassicSimilarity], result of:
          0.06365104 = score(doc=2134,freq=2.0), product of:
            0.12567094 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.03837932 = 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)
        0.02426605 = product of:
          0.07279815 = sum of:
            0.07279815 = weight(_text_:22 in 2134) [ClassicSimilarity], result of:
              0.07279815 = score(doc=2134,freq=2.0), product of:
                0.13439783 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.03837932 = 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)
      0.5 = coord(3/6)
    
    Date
    30. 3.2001 13:32:22
    Language
    e
    Theme
    Semantisches Umfeld in Indexierung u. Retrieval
  2. Robertson, S.E.: On relevance weight estimation and query expansion (1986) 0.02
    0.01807525 = product of:
      0.054225747 = sum of:
        0.008760712 = weight(_text_:e in 3875) [ClassicSimilarity], result of:
          0.008760712 = score(doc=3875,freq=2.0), product of:
            0.05516528 = queryWeight, product of:
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.03837932 = queryNorm
            0.15880844 = fieldWeight in 3875, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.43737 = idf(docFreq=28552, maxDocs=44218)
              0.078125 = fieldNorm(doc=3875)
        0.045465034 = weight(_text_:u in 3875) [ClassicSimilarity], result of:
          0.045465034 = score(doc=3875,freq=2.0), product of:
            0.12567094 = queryWeight, product of:
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.03837932 = queryNorm
            0.3617784 = fieldWeight in 3875, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.2744443 = idf(docFreq=4547, maxDocs=44218)
              0.078125 = fieldNorm(doc=3875)
      0.33333334 = coord(2/6)
    
    Language
    e
    Theme
    Semantisches Umfeld in Indexierung u. Retrieval