The influence of transformations on the h-index and the g-index

Authors:
L. Egghe
Affiliations:
Universiteit Hasselt (UHasselt), Campus Diepenbeek, Agoralaan, B-3590 Diepenbeek, Belgium and Universiteit Antwerpen (UA), Stadscampus, Venusstraat 35, B-2000 Antwerpen
Venue:
Journal of the American Society for Information Science and Technology
Year:
2008

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Abstract

In a previous article, we introduced a general transformation on sources and one on items in an arbitrary information production process (IPP). In this article, we investigate the influence of these transformations on the h-index and on the g-index. General formulae that describe this influence are presented. These are applied to the case that the size-frequency function is Lotkaian (i.e., is a decreasing power function). We further show that the h-index of the transformed IPP belongs to the interval bounded by the two transformations of the h-index of the original IPP, and we also show that this property is not true for the g-index. © 2008 Wiley Periodicals, Inc.