Search (7 results, page 1 of 1)

Egghe, L.; Guns, R.; Rousseau, R.; Leuven, K.U.: Erratum (2012) 0.01

0.0140432445 = product of:
  0.07021622 = sum of:
    0.07021622 = weight(_text_:22 in 4992) [ClassicSimilarity], result of:
      0.07021622 = score(doc=4992,freq=2.0), product of:
        0.18148361 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051825367 = 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)
  0.2 = coord(1/5)

Date: 14. 2.2012 12:53:22

Rousseau, R.: Timelines in citation research (2006) 0.01

0.013325617 = product of:
  0.06662808 = sum of:
    0.06662808 = weight(_text_:40 in 1746) [ClassicSimilarity], result of:
      0.06662808 = score(doc=1746,freq=2.0), product of:
        0.19765252 = queryWeight, product of:
          3.813818 = idf(docFreq=2651, maxDocs=44218)
          0.051825367 = queryNorm
        0.33709705 = fieldWeight in 1746, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.813818 = idf(docFreq=2651, maxDocs=44218)
          0.0625 = fieldNorm(doc=1746)
  0.2 = coord(1/5)

Date: 18. 8.2006 14:29:40

Egghe, L.; Rousseau, R.: Aging, obsolescence, impact, growth, and utilization : definitions and relations (2000) 0.01

0.009994212 = product of:
  0.04997106 = sum of:
    0.04997106 = weight(_text_:40 in 5154) [ClassicSimilarity], result of:
      0.04997106 = score(doc=5154,freq=2.0), product of:
        0.19765252 = queryWeight, product of:
          3.813818 = idf(docFreq=2651, maxDocs=44218)
          0.051825367 = queryNorm
        0.2528228 = fieldWeight in 5154, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.813818 = idf(docFreq=2651, maxDocs=44218)
          0.046875 = fieldNorm(doc=5154)
  0.2 = coord(1/5)

Date: 8. 9.2000 20:16:40

Kretschmer, H.; Rousseau, R.: Author inflation leads to a breakdown of Lotka's law : in and out of context (2001) 0.01
```
0.009994212 = product of:
  0.04997106 = sum of:
    0.04997106 = weight(_text_:40 in 5205) [ClassicSimilarity], result of:
      0.04997106 = score(doc=5205,freq=2.0), product of:
        0.19765252 = queryWeight, product of:
          3.813818 = idf(docFreq=2651, maxDocs=44218)
          0.051825367 = queryNorm
        0.2528228 = fieldWeight in 5205, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.813818 = idf(docFreq=2651, maxDocs=44218)
          0.046875 = fieldNorm(doc=5205)
  0.2 = coord(1/5)
```
Abstract

Fractional counting of authors of multi-authored papers has been shown to lead to a breakdown of Lotka's Law despite its robust character under most circumstances. Kretschmer and Rousseau use the normal count method of full credit for each author on two five-year bibliographies from each of 13 Dutch physics institutes where high co-authorship is a common occurrence. Kolmogorov-Smirnov tests were preformed to see if the Lotka distribution fit the data. All bibliographies up to 40 authors fit acceptably; no bibliography with a paper with over 100 authors fits the distribution. The underlying traditional "success breeds success" mechanism assumes new items on a one by one basis, but Egghe's generalized model would still account for the process. It seems unlikely that Lotka's Law will hold in a high co-authorship environment.

Egghe, L.; Rousseau, R.: Averaging and globalising quotients of informetric and scientometric data (1996) 0.01

0.008425946 = product of:
  0.04212973 = sum of:
    0.04212973 = weight(_text_:22 in 7659) [ClassicSimilarity], result of:
      0.04212973 = score(doc=7659,freq=2.0), product of:
        0.18148361 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051825367 = 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)
  0.2 = coord(1/5)

Source: Journal of information science. 22(1996) no.3, S.165-170

Asonuma, A.; Fang, Y.; Rousseau, R.: Reflections on the age distribution of Japanese scientists (2006) 0.01

0.008425946 = product of:
  0.04212973 = sum of:
    0.04212973 = weight(_text_:22 in 5270) [ClassicSimilarity], result of:
      0.04212973 = score(doc=5270,freq=2.0), product of:
        0.18148361 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051825367 = queryNorm
        0.23214069 = fieldWeight in 5270, 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=5270)
  0.2 = coord(1/5)

Date: 22. 7.2006 15:26:24

Ahlgren, P.; Jarneving, B.; Rousseau, R.: Requirements for a cocitation similarity measure, with special reference to Pearson's correlation coefficient (2003) 0.01

0.0056172977 = product of:
  0.028086487 = sum of:
    0.028086487 = weight(_text_:22 in 5171) [ClassicSimilarity], result of:
      0.028086487 = score(doc=5171,freq=2.0), product of:
        0.18148361 = queryWeight, product of:
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.051825367 = queryNorm
        0.15476047 = fieldWeight in 5171, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          3.5018296 = idf(docFreq=3622, maxDocs=44218)
          0.03125 = fieldNorm(doc=5171)
  0.2 = coord(1/5)

Date: 9. 7.2006 10:22:35

Search (7 results, page 1 of 1)

Authors

Years

Themes