Search (3 results, page 1 of 1)

  • × author_ss:"Rousseau, R."
  • × theme_ss:"Informetrie"
  • × year_i:[1990 TO 2000}
  1. Egghe, L.; Rousseau, R.: Averaging and globalising quotients of informetric and scientometric data (1996) 0.02
    0.022294745 = product of:
      0.04458949 = sum of:
        0.04458949 = sum of:
          0.010943544 = weight(_text_:a in 7659) [ClassicSimilarity], result of:
            0.010943544 = score(doc=7659,freq=18.0), product of:
              0.04772363 = queryWeight, product of:
                1.153047 = idf(docFreq=37942, maxDocs=44218)
                0.041389145 = queryNorm
              0.22931081 = fieldWeight in 7659, product of:
                4.2426405 = tf(freq=18.0), with freq of:
                  18.0 = termFreq=18.0
                1.153047 = idf(docFreq=37942, maxDocs=44218)
                0.046875 = fieldNorm(doc=7659)
          0.033645947 = weight(_text_:22 in 7659) [ClassicSimilarity], result of:
            0.033645947 = score(doc=7659,freq=2.0), product of:
              0.14493774 = queryWeight, product of:
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.041389145 = queryNorm
              0.23214069 = fieldWeight in 7659, product of:
                1.4142135 = tf(freq=2.0), with freq of:
                  2.0 = termFreq=2.0
                3.5018296 = idf(docFreq=3622, maxDocs=44218)
                0.046875 = fieldNorm(doc=7659)
      0.5 = coord(1/2)
    
    Abstract
    It is possible, using ISI's Journal Citation Report (JCR), to calculate average impact factors (AIF) for LCR's subject categories but it can be more useful to know the global Impact Factor (GIF) of a subject category and compare the 2 values. Reports results of a study to compare the relationships between AIFs and GIFs of subjects, based on the particular case of the average impact factor of a subfield versus the impact factor of this subfield as a whole, the difference being studied between an average of quotients, denoted as AQ, and a global average, obtained as a quotient of averages, and denoted as GQ. In the case of impact factors, AQ becomes the average impact factor of a field, and GQ becomes its global impact factor. Discusses a number of applications of this technique in the context of informetrics and scientometrics
    Source
    Journal of information science. 22(1996) no.3, S.165-170
    Type
    a
  2. Rousseau, R.: ¬A table for estimating the exponent in Lotka's law (1993) 0.00
    0.003439224 = product of:
      0.006878448 = sum of:
        0.006878448 = product of:
          0.013756896 = sum of:
            0.013756896 = weight(_text_:a in 5653) [ClassicSimilarity], result of:
              0.013756896 = score(doc=5653,freq=4.0), product of:
                0.04772363 = queryWeight, product of:
                  1.153047 = idf(docFreq=37942, maxDocs=44218)
                  0.041389145 = queryNorm
                0.28826174 = fieldWeight in 5653, product of:
                  2.0 = tf(freq=4.0), with freq of:
                    4.0 = termFreq=4.0
                  1.153047 = idf(docFreq=37942, maxDocs=44218)
                  0.125 = fieldNorm(doc=5653)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Type
    a
  3. Egghe, L.; Rousseau, R.: Duality in information retrieval and the hypegeometric distribution (1997) 0.00
    0.0012159493 = product of:
      0.0024318986 = sum of:
        0.0024318986 = product of:
          0.004863797 = sum of:
            0.004863797 = weight(_text_:a in 647) [ClassicSimilarity], result of:
              0.004863797 = score(doc=647,freq=2.0), product of:
                0.04772363 = queryWeight, product of:
                  1.153047 = idf(docFreq=37942, maxDocs=44218)
                  0.041389145 = queryNorm
                0.10191591 = fieldWeight in 647, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.153047 = idf(docFreq=37942, maxDocs=44218)
                  0.0625 = fieldNorm(doc=647)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Type
    a