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http://hdl.handle.net/1942/10247
Title: | The distribution of the uncitedness factor and its functional relation with the impact factor | Authors: | EGGHE, Leo | Issue Date: | 2010 | Publisher: | Springer, Dordrecht | Source: | SCIENTOMETRICS, 83(3). p. 689-695 | Abstract: | The uncitedness factor of a journal is its fraction of uncited articles. Given a set of journals (e.g. in a field) we can determine the rank-order distribution of these uncitedness factors. Hereby we use the Central Limit Theorem which is valid for uncitedness factors since it are fractions, hence averages. A similar result was proved earlier for the impact factors of a set of journals. Here we combine the two rank-order distributions, hereby eliminating the rank, yielding the functional relation between the impact factor and the uncitedness factor. It is proved that the decreasing relation has an S-shape: first convex, then concave and that the inflection point is in the point (μ′, μ) where μ is the average of the impact factors and μ′ is the average of the uncitedness factors. | Notes: | Egghe, L, Univ Hasselt, Campus Diepenbeek, B-3590 Diepenbeek, Belgium. | Keywords: | Impact factor - Uncitedness factor - Rank distribution - Rank-order distribution - S-shape - Central Limit Theorem;Impact factor; Uncitedness factor; Rank distribution; Rank-order distribution; S-shape; Central Limit Theorem | Document URI: | http://hdl.handle.net/1942/10247 | ISSN: | 0138-9130 | e-ISSN: | 1588-2861 | DOI: | 10.1007/s11192-009-0130-y | ISI #: | 000277418400007 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2011 |
Appears in Collections: | Research publications |
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File | Description | Size | Format | |
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distribution 1.pdf Restricted Access | Published version | 271.58 kB | Adobe PDF | View/Open Request a copy |
distribution 2.pdf | Peer-reviewed author version | 261.72 kB | Adobe PDF | View/Open |
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