-
Bornmann, L.; Marx, W.: Distributions instead of single numbers : percentiles and beam plots for the assessment of single researchers (2014)
0.20
0.20153074 = product of:
0.3022961 = sum of:
0.2523518 = weight(_text_:a.f.j in 1190) [ClassicSimilarity], result of:
0.2523518 = score(doc=1190,freq=2.0), product of:
0.3681201 = queryWeight, product of:
8.863674 = idf(docFreq=16, maxDocs=44218)
0.04153132 = queryNorm
0.6855148 = fieldWeight in 1190, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
8.863674 = idf(docFreq=16, maxDocs=44218)
0.0546875 = fieldNorm(doc=1190)
0.049944326 = product of:
0.09988865 = sum of:
0.09988865 = weight(_text_:van in 1190) [ClassicSimilarity], result of:
0.09988865 = score(doc=1190,freq=2.0), product of:
0.23160313 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04153132 = queryNorm
0.43129233 = fieldWeight in 1190, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.0546875 = fieldNorm(doc=1190)
0.5 = coord(1/2)
0.6666667 = coord(2/3)
- Abstract
- Citations measure an aspect of scientific quality: the impact of publications (A.F.J. van Raan, 1996). Percentiles normalize the impact of papers with respect to their publication year and field without using the arithmetic average. They are suitable for visualizing the performance of a single scientist. Beam plots make it possible to present the distributions of percentiles in the different publication years combined with the medians from these percentiles within each year and across all years.
-
Besselaar, P. van den; Wagner, C,; Bornmann, L.: Correct assumptions? (2016)
0.03
0.028539617 = product of:
0.085618846 = sum of:
0.085618846 = product of:
0.17123769 = sum of:
0.17123769 = weight(_text_:van in 3020) [ClassicSimilarity], result of:
0.17123769 = score(doc=3020,freq=2.0), product of:
0.23160313 = queryWeight, product of:
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.04153132 = queryNorm
0.7393583 = fieldWeight in 3020, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
5.5765896 = idf(docFreq=454, maxDocs=44218)
0.09375 = fieldNorm(doc=3020)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
-
Marx, W.; Bornmann, L.: On the problems of dealing with bibliometric data (2014)
0.01
0.011253841 = product of:
0.033761524 = sum of:
0.033761524 = product of:
0.06752305 = sum of:
0.06752305 = weight(_text_:22 in 1239) [ClassicSimilarity], result of:
0.06752305 = score(doc=1239,freq=2.0), product of:
0.14543562 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04153132 = queryNorm
0.46428138 = fieldWeight in 1239, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.09375 = fieldNorm(doc=1239)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Date
- 18. 3.2014 19:13:22
-
Bornmann, L.; Mutz, R.: From P100 to P100' : a new citation-rank approach (2014)
0.01
0.0075025614 = product of:
0.022507684 = sum of:
0.022507684 = product of:
0.04501537 = sum of:
0.04501537 = weight(_text_:22 in 1431) [ClassicSimilarity], result of:
0.04501537 = score(doc=1431,freq=2.0), product of:
0.14543562 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04153132 = 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)
0.33333334 = coord(1/3)
- Date
- 22. 8.2014 17:05:18
-
Bornmann, L.: How to analyze percentile citation impact data meaningfully in bibliometrics : the statistical analysis of distributions, percentile rank classes, and top-cited papers (2013)
0.01
0.0056269206 = product of:
0.016880762 = sum of:
0.016880762 = product of:
0.033761524 = sum of:
0.033761524 = weight(_text_:22 in 656) [ClassicSimilarity], result of:
0.033761524 = score(doc=656,freq=2.0), product of:
0.14543562 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04153132 = queryNorm
0.23214069 = fieldWeight in 656, 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=656)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Date
- 22. 3.2013 19:44:17
-
Leydesdorff, L.; Bornmann, L.; Wagner, C.S.: ¬The relative influences of government funding and international collaboration on citation impact (2019)
0.01
0.0056269206 = product of:
0.016880762 = sum of:
0.016880762 = product of:
0.033761524 = sum of:
0.033761524 = weight(_text_:22 in 4681) [ClassicSimilarity], result of:
0.033761524 = score(doc=4681,freq=2.0), product of:
0.14543562 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04153132 = queryNorm
0.23214069 = fieldWeight in 4681, 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=4681)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Date
- 8. 1.2019 18:22:45
-
Leydesdorff, L.; Bornmann, L.: How fractional counting of citations affects the impact factor : normalization in terms of differences in citation potentials among fields of science (2011)
0.00
0.004689101 = product of:
0.014067302 = sum of:
0.014067302 = product of:
0.028134605 = sum of:
0.028134605 = weight(_text_:22 in 4186) [ClassicSimilarity], result of:
0.028134605 = score(doc=4186,freq=2.0), product of:
0.14543562 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04153132 = queryNorm
0.19345059 = fieldWeight in 4186, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=4186)
0.5 = coord(1/2)
0.33333334 = coord(1/3)
- Date
- 22. 1.2011 12:51:07
