Search (1 results, page 1 of 1)

  • × author_ss:"Ruthven, I."
  • × theme_ss:"Retrievalalgorithmen"
  • × year_i:[1990 TO 2000}
  1. Ruthven, I.; Lalmas, M.: Selective relevance feedback using term characteristics (1999) 0.02
    0.020465266 = product of:
      0.030697897 = sum of:
        0.010677542 = weight(_text_:in in 3824) [ClassicSimilarity], result of:
          0.010677542 = score(doc=3824,freq=2.0), product of:
            0.07104705 = queryWeight, product of:
              1.3602545 = idf(docFreq=30841, maxDocs=44218)
              0.052230705 = queryNorm
            0.15028831 = fieldWeight in 3824, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              1.3602545 = idf(docFreq=30841, maxDocs=44218)
              0.078125 = fieldNorm(doc=3824)
        0.020020355 = product of:
          0.04004071 = sum of:
            0.04004071 = weight(_text_:science in 3824) [ClassicSimilarity], result of:
              0.04004071 = score(doc=3824,freq=2.0), product of:
                0.1375819 = queryWeight, product of:
                  2.6341193 = idf(docFreq=8627, maxDocs=44218)
                  0.052230705 = queryNorm
                0.2910318 = fieldWeight in 3824, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  2.6341193 = idf(docFreq=8627, maxDocs=44218)
                  0.078125 = fieldNorm(doc=3824)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Source
    Vocabulary as a central concept in digital libraries: interdisciplinary concepts, challenges, and opportunities : proceedings of the Third International Conference an Conceptions of Library and Information Science (COLIS3), Dubrovnik, Croatia, 23-26 May 1999. Ed. by T. Arpanac et al