Search (1 results, page 1 of 1)

  • × author_ss:"Bornmann, L."
  • × theme_ss:"Retrievalalgorithmen"
  1. Bornmann, L.; Mutz, R.: From P100 to P100' : a new citation-rank approach (2014) 0.02
    0.018710561 = product of:
      0.06548696 = sum of:
        0.044320337 = weight(_text_:based in 1431) [ClassicSimilarity], result of:
          0.044320337 = score(doc=1431,freq=4.0), product of:
            0.11767787 = queryWeight, product of:
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.03905679 = queryNorm
            0.37662423 = fieldWeight in 1431, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.0129938 = idf(docFreq=5906, maxDocs=44218)
              0.0625 = fieldNorm(doc=1431)
        0.021166623 = product of:
          0.042333245 = sum of:
            0.042333245 = weight(_text_:22 in 1431) [ClassicSimilarity], result of:
              0.042333245 = score(doc=1431,freq=2.0), product of:
                0.13677022 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.03905679 = queryNorm
                0.30952093 = fieldWeight in 1431, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0625 = fieldNorm(doc=1431)
          0.5 = coord(1/2)
      0.2857143 = coord(2/7)
    
    Abstract
    Properties of a percentile-based rating scale needed in bibliometrics are formulated. Based on these properties, P100 was recently introduced as a new citation-rank approach (Bornmann, Leydesdorff, & Wang, 2013). In this paper, we conceptualize P100 and propose an improvement which we call P100'. Advantages and disadvantages of citation-rank indicators are noted.
    Date
    22. 8.2014 17:05:18