Search (10 results, page 1 of 1)

  • × author_ss:"Schreiber, M."
  • × theme_ss:"Informetrie"
  1. Schreiber, M.: Do we need the g-index? (2013) 0.04
    0.040867403 = product of:
      0.061301105 = sum of:
        0.024606844 = weight(_text_:m in 1113) [ClassicSimilarity], result of:
          0.024606844 = score(doc=1113,freq=2.0), product of:
            0.11187479 = queryWeight, product of:
              2.4884486 = idf(docFreq=9980, maxDocs=44218)
              0.044957645 = queryNorm
            0.21994986 = fieldWeight in 1113, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.4884486 = idf(docFreq=9980, maxDocs=44218)
              0.0625 = fieldNorm(doc=1113)
        0.036694262 = product of:
          0.073388524 = sum of:
            0.073388524 = weight(_text_:de in 1113) [ClassicSimilarity], result of:
              0.073388524 = score(doc=1113,freq=2.0), product of:
                0.193205 = queryWeight, product of:
                  4.297489 = idf(docFreq=1634, maxDocs=44218)
                  0.044957645 = queryNorm
                0.37984797 = fieldWeight in 1113, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  4.297489 = idf(docFreq=1634, maxDocs=44218)
                  0.0625 = fieldNorm(doc=1113)
          0.5 = coord(1/2)
      0.6666667 = coord(2/3)
    
    Abstract
    Using a very small sample of 8 data sets it was recently shown by De Visscher (2011) that the g-index is very close to the square root of the total number of citations. It was argued that there is no bibliometrically meaningful difference. Using another somewhat larger empirical sample of 26 data sets I show that the difference may be larger and I argue in favor of the g-index.
  2. Schreiber, M.: Revisiting the g-index : the average number of citations in the g-core (2009) 0.01
    0.008202282 = product of:
      0.024606844 = sum of:
        0.024606844 = weight(_text_:m in 3313) [ClassicSimilarity], result of:
          0.024606844 = score(doc=3313,freq=2.0), product of:
            0.11187479 = queryWeight, product of:
              2.4884486 = idf(docFreq=9980, maxDocs=44218)
              0.044957645 = queryNorm
            0.21994986 = fieldWeight in 3313, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.4884486 = idf(docFreq=9980, maxDocs=44218)
              0.0625 = fieldNorm(doc=3313)
      0.33333334 = coord(1/3)
    
  3. Schreiber, M.: Inconsistencies in the highly cited publications indicator (2013) 0.01
    0.008202282 = product of:
      0.024606844 = sum of:
        0.024606844 = weight(_text_:m in 815) [ClassicSimilarity], result of:
          0.024606844 = score(doc=815,freq=2.0), product of:
            0.11187479 = queryWeight, product of:
              2.4884486 = idf(docFreq=9980, maxDocs=44218)
              0.044957645 = queryNorm
            0.21994986 = fieldWeight in 815, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.4884486 = idf(docFreq=9980, maxDocs=44218)
              0.0625 = fieldNorm(doc=815)
      0.33333334 = coord(1/3)
    
  4. Schreiber, M.: Restricting the h-index to a citation time window : a case study of a timed Hirsch index (2014) 0.01
    0.008202282 = product of:
      0.024606844 = sum of:
        0.024606844 = weight(_text_:m in 1563) [ClassicSimilarity], result of:
          0.024606844 = score(doc=1563,freq=2.0), product of:
            0.11187479 = queryWeight, product of:
              2.4884486 = idf(docFreq=9980, maxDocs=44218)
              0.044957645 = queryNorm
            0.21994986 = fieldWeight in 1563, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.4884486 = idf(docFreq=9980, maxDocs=44218)
              0.0625 = fieldNorm(doc=1563)
      0.33333334 = coord(1/3)
    
  5. Schreiber, M.: ¬A case study of the modified Hirsch index hm accounting for multiple coauthors (2009) 0.01
    0.007176996 = product of:
      0.021530988 = sum of:
        0.021530988 = weight(_text_:m in 2858) [ClassicSimilarity], result of:
          0.021530988 = score(doc=2858,freq=2.0), product of:
            0.11187479 = queryWeight, product of:
              2.4884486 = idf(docFreq=9980, maxDocs=44218)
              0.044957645 = queryNorm
            0.19245613 = fieldWeight in 2858, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.4884486 = idf(docFreq=9980, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2858)
      0.33333334 = coord(1/3)
    
  6. Schreiber, M.: ¬A variant of the h-index to measure recent performance (2015) 0.01
    0.007176996 = product of:
      0.021530988 = sum of:
        0.021530988 = weight(_text_:m in 2262) [ClassicSimilarity], result of:
          0.021530988 = score(doc=2262,freq=2.0), product of:
            0.11187479 = queryWeight, product of:
              2.4884486 = idf(docFreq=9980, maxDocs=44218)
              0.044957645 = queryNorm
            0.19245613 = fieldWeight in 2262, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.4884486 = idf(docFreq=9980, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2262)
      0.33333334 = coord(1/3)
    
  7. Schreiber, M.: Fractionalized counting of publications for the g-Index (2009) 0.01
    0.006151711 = product of:
      0.018455133 = sum of:
        0.018455133 = weight(_text_:m in 3125) [ClassicSimilarity], result of:
          0.018455133 = score(doc=3125,freq=2.0), product of:
            0.11187479 = queryWeight, product of:
              2.4884486 = idf(docFreq=9980, maxDocs=44218)
              0.044957645 = queryNorm
            0.1649624 = fieldWeight in 3125, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.4884486 = idf(docFreq=9980, maxDocs=44218)
              0.046875 = fieldNorm(doc=3125)
      0.33333334 = coord(1/3)
    
  8. Waltman, L.; Schreiber, M.: On the calculation of percentile-based bibliometric indicators (2013) 0.01
    0.006151711 = product of:
      0.018455133 = sum of:
        0.018455133 = weight(_text_:m in 616) [ClassicSimilarity], result of:
          0.018455133 = score(doc=616,freq=2.0), product of:
            0.11187479 = queryWeight, product of:
              2.4884486 = idf(docFreq=9980, maxDocs=44218)
              0.044957645 = queryNorm
            0.1649624 = fieldWeight in 616, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.4884486 = idf(docFreq=9980, maxDocs=44218)
              0.046875 = fieldNorm(doc=616)
      0.33333334 = coord(1/3)
    
  9. Schreiber, M.: ¬An empirical investigation of the g-index for 26 physicists in comparison with the h-index, the A-index, and the R-index (2008) 0.01
    0.005126426 = product of:
      0.015379278 = sum of:
        0.015379278 = weight(_text_:m in 1968) [ClassicSimilarity], result of:
          0.015379278 = score(doc=1968,freq=2.0), product of:
            0.11187479 = queryWeight, product of:
              2.4884486 = idf(docFreq=9980, maxDocs=44218)
              0.044957645 = queryNorm
            0.13746867 = fieldWeight in 1968, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.4884486 = idf(docFreq=9980, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1968)
      0.33333334 = coord(1/3)
    
  10. Schreiber, M.: Inconsistencies of recently proposed citation impact indicators and how to avoid them (2012) 0.01
    0.005126426 = product of:
      0.015379278 = sum of:
        0.015379278 = weight(_text_:m in 459) [ClassicSimilarity], result of:
          0.015379278 = score(doc=459,freq=2.0), product of:
            0.11187479 = queryWeight, product of:
              2.4884486 = idf(docFreq=9980, maxDocs=44218)
              0.044957645 = queryNorm
            0.13746867 = fieldWeight in 459, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              2.4884486 = idf(docFreq=9980, maxDocs=44218)
              0.0390625 = fieldNorm(doc=459)
      0.33333334 = coord(1/3)
    

Types