Some comments on Egghe's derivation of the impact factor distribution |
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| Authors: | Ludo Waltman Nees Jan van Eck |
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| Institution: | aEconometric Institute, Erasmus School of Economics, Erasmus University Rotterdam, P.O. Box 1738, 3000 DR Rotterdam, The Netherlands;bCentre for Science and Technology Studies, Leiden University, P.O. Box 905, 2300 AX Leiden, The Netherlands |
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| Abstract: | In a recent paper, Egghe Egghe, L. (in press). Mathematical derivation of the impact factor distribution. Journal of Informetrics] presents a mathematical analysis of the rank-order distribution of journal impact factors. The analysis is based on the central limit theorem. We criticize the empirical relevance of Egghe's analysis. More specifically, we argue that Egghe's analysis relies on an unrealistic assumption and we show that the analysis is not in agreement with empirical data. |
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| Keywords: | Impact factor Distribution Rank-order distribution Central limit theorem |
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