Search (6 results, page 1 of 1)

Egghe, L.; Rousseau, R.: ¬The Hirsch index of a shifted Lotka function and its relation with the impact factor (2012) 0.03
```
0.03323813 = product of:
  0.16619065 = sum of:
    0.16619065 = weight(_text_:relation in 243) [ClassicSimilarity], result of:
      0.16619065 = score(doc=243,freq=8.0), product of:
        0.20534351 = queryWeight, product of:
          5.232299 = idf(docFreq=641, maxDocs=44218)
          0.03924537 = queryNorm
        0.8093299 = fieldWeight in 243, product of:
          2.828427 = tf(freq=8.0), with freq of:
            8.0 = termFreq=8.0
          5.232299 = idf(docFreq=641, maxDocs=44218)
          0.0546875 = fieldNorm(doc=243)
  0.2 = coord(1/5)
```
Abstract

Based on earlier results about the shifted Lotka function, we prove an implicit functional relation between the Hirsch index (h-index) and the total number of sources (T). It is shown that the corresponding function, h(T), is concavely increasing. Next, we construct an implicit relation between the h-index and the impact factor IF (an average number of items per source). The corresponding function h(IF) is increasing and we show that if the parameter C in the numerator of the shifted Lotka function is high, then the relation between the h-index and the impact factor is almost linear.

Egghe, L.; Guns, R.; Rousseau, R.; Leuven, K.U.: Erratum (2012) 0.00

0.0035448044 = product of:
  0.017724022 = sum of:
    0.017724022 = product of:
      0.053172063 = sum of:
        0.053172063 = weight(_text_:22 in 4992) [ClassicSimilarity], result of:
          0.053172063 = score(doc=4992,freq=2.0), product of:
            0.13743061 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03924537 = 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)
  0.2 = coord(1/5)

Date: 14. 2.2012 12:53:22

Liu, Y.; Rousseau, R.: Citation analysis and the development of science : a case study using articles by some Nobel prize winners (2014) 0.00

0.0028615852 = product of:
  0.0143079255 = sum of:
    0.0143079255 = product of:
      0.042923775 = sum of:
        0.042923775 = weight(_text_:29 in 1197) [ClassicSimilarity], result of:
          0.042923775 = score(doc=1197,freq=2.0), product of:
            0.13805294 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.03924537 = queryNorm
            0.31092256 = fieldWeight in 1197, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.0625 = fieldNorm(doc=1197)
      0.33333334 = coord(1/3)
  0.2 = coord(1/5)

Date: 29. 1.2014 16:31:35

Colebunders, R.; Kenyon, C.; Rousseau, R.: Increase in numbers and proportions of review articles in Tropical Medicine, Infectious Diseases, and oncology (2014) 0.00

0.0021461889 = product of:
  0.010730944 = sum of:
    0.010730944 = product of:
      0.03219283 = sum of:
        0.03219283 = weight(_text_:29 in 1189) [ClassicSimilarity], result of:
          0.03219283 = score(doc=1189,freq=2.0), product of:
            0.13805294 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.03924537 = queryNorm
            0.23319192 = fieldWeight in 1189, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.046875 = fieldNorm(doc=1189)
      0.33333334 = coord(1/3)
  0.2 = coord(1/5)

Date: 29. 1.2014 15:56:36

Shi, D.; Rousseau, R.; Yang, L.; Li, J.: ¬A journal's impact factor is influenced by changes in publication delays of citing journals (2017) 0.00

0.0021461889 = product of:
  0.010730944 = sum of:
    0.010730944 = product of:
      0.03219283 = sum of:
        0.03219283 = weight(_text_:29 in 3441) [ClassicSimilarity], result of:
          0.03219283 = score(doc=3441,freq=2.0), product of:
            0.13805294 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.03924537 = queryNorm
            0.23319192 = fieldWeight in 3441, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.046875 = fieldNorm(doc=3441)
      0.33333334 = coord(1/3)
  0.2 = coord(1/5)

Date: 16.11.2017 13:29:52

Yang, B.; Rousseau, R.; Wang, X.; Huang, S.: How important is scientific software in bioinformatics research? : a comparative study between international and Chinese research communities (2018) 0.00

0.0017884907 = product of:
  0.008942453 = sum of:
    0.008942453 = product of:
      0.02682736 = sum of:
        0.02682736 = weight(_text_:29 in 4461) [ClassicSimilarity], result of:
          0.02682736 = score(doc=4461,freq=2.0), product of:
            0.13805294 = queryWeight, product of:
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.03924537 = queryNorm
            0.19432661 = fieldWeight in 4461, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5176873 = idf(docFreq=3565, maxDocs=44218)
              0.0390625 = fieldNorm(doc=4461)
      0.33333334 = coord(1/3)
  0.2 = coord(1/5)

Date: 29. 9.2018 12:36:19

Search (6 results, page 1 of 1)

Authors