Search (5 results, page 1 of 1)

  • × author_ss:"Egghe, L."
  1. Egghe, L.: Dynamic h-index : the Hirsch index in function of time (2007) 0.02 
    0.02292318 = product of:
  0.09169272 = sum of:
    0.09169272 = weight(_text_:evolution in 147) [ClassicSimilarity], result of:
      0.09169272 = score(doc=147,freq=2.0), product of:
        0.19585751 = queryWeight, product of:
          5.29663 = idf(docFreq=601, maxDocs=44218)
          0.03697776 = queryNorm
        0.46816036 = fieldWeight in 147, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.29663 = idf(docFreq=601, maxDocs=44218)
          0.0625 = fieldNorm(doc=147)
  0.25 = coord(1/4)
    Abstract
    When there are a group of articles and the present time is fixed we can determine the unique number h being the number of articles that received h or more citations while the other articles received a number of citations which is not larger than h. In this article, the time dependence of the h-index is determined. This is important to describe the expected career evolution of a scientist's work or of a journal's production in a fixed year.
  2. Egghe, L.; Rousseau, R.; Hooydonk, G. van: Methods for accrediting publications to authors or countries : consequences for evaluation studies (2000) 0.02 
    0.017192384 = product of:
  0.06876954 = sum of:
    0.06876954 = weight(_text_:evolution in 4384) [ClassicSimilarity], result of:
      0.06876954 = score(doc=4384,freq=2.0), product of:
        0.19585751 = queryWeight, product of:
          5.29663 = idf(docFreq=601, maxDocs=44218)
          0.03697776 = queryNorm
        0.35112026 = fieldWeight in 4384, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.29663 = idf(docFreq=601, maxDocs=44218)
          0.046875 = fieldNorm(doc=4384)
  0.25 = coord(1/4)
    Abstract
    One aim of science evaluation studies is to determine quantitatively the contribution of different players (authors, departments, countries) to the whole system. This information is then used to study the evolution of the system, for instance to gauge the results of special national or international programs. Taking articles as our basic data, we want to determine the exact relative contribution of each coauthor or each country. These numbers are brought together to obtain country scores, or department scores, etc. It turns out, as we will show in this article, that different scoring methods can yield totally different rankings. Conseqeuntly, a ranking between countries, universities, research groups or authors, based on one particular accrediting methods does not contain an absolute truth about their relative importance
  3. Egghe, L.; Guns, R.; Rousseau, R.; Leuven, K.U.: Erratum (2012) 0.00 
    0.0041749803 = product of:
  0.016699921 = sum of:
    0.016699921 = product of:
      0.050099764 = sum of:
        0.050099764 = weight(_text_:22 in 4992) [ClassicSimilarity], result of:
          0.050099764 = score(doc=4992,freq=2.0), product of:
            0.12948982 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03697776 = queryNorm
            0.38690117 = fieldWeight in 4992, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.078125 = fieldNorm(doc=4992)
      0.33333334 = coord(1/3)
  0.25 = coord(1/4)
    Date
    14. 2.2012 12:53:22
  4. Egghe, L.; Rousseau, R.: Averaging and globalising quotients of informetric and scientometric data (1996) 0.00 
    0.002504988 = product of:
  0.010019952 = sum of:
    0.010019952 = product of:
      0.030059857 = sum of:
        0.030059857 = weight(_text_:22 in 7659) [ClassicSimilarity], result of:
          0.030059857 = score(doc=7659,freq=2.0), product of:
            0.12948982 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03697776 = 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)
      0.33333334 = coord(1/3)
  0.25 = coord(1/4)
    Source
    Journal of information science. 22(1996) no.3, S.165-170
  5. Egghe, L.: ¬A universal method of information retrieval evaluation : the "missing" link M and the universal IR surface (2004) 0.00 
    0.002504988 = product of:
  0.010019952 = sum of:
    0.010019952 = product of:
      0.030059857 = sum of:
        0.030059857 = weight(_text_:22 in 2558) [ClassicSimilarity], result of:
          0.030059857 = score(doc=2558,freq=2.0), product of:
            0.12948982 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03697776 = queryNorm
            0.23214069 = fieldWeight in 2558, 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=2558)
      0.33333334 = coord(1/3)
  0.25 = coord(1/4)
    Date
    14. 8.2004 19:17:22

Authors

Years