On the meaning of the h-index

Details On the meaning of the h-index On the meaning of the h-index

2010-02-04

arxiv.org/abs/1002.0878v1

J. Stat. Mech. L03005 (2010)

Physics

Data Analysis, Statistics and Probability

3 pages, 2 figures, 2 tables, revtex4 format

Scientific paper

10.1088/1742-5468/2010/03/L03005

The h-index -- the value for which an individual has published at least h papers with at least h citations -- has become a popular metric to assess the citation impact of scientists. As already noted in the original work of Hirsch and as evidenced from data of a representative sample of physicists, sqrt{c} scales as h, where c is the total number citations to an individual. Thus sqrt{c} appears to be equivalent to the h index. As a further check of this equivalence, the distribution of the ratio s=sqrt{c}/2h for this sample is sharply peaked about 1. The outliers in this distribution reveal fundamentally different types of individual publication records.

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