Power-law distributions for the citation index of scientific publications and scientists

被引：31

作者：

Gupta, HM ^{[1
]}

Campanha, JR ^{[1
]}

Pesce, RAG ^{[1
]}

机构：

[1] UNESP, Inst Geociencias & Ciencias Exatas, Dept Fis, BR-13500970 Rio Claro, SP, Brazil

来源：

BRAZILIAN JOURNAL OF PHYSICS | 2005年 / 35卷 / 4A期

关键词：

D O I：

10.1590/S0103-97332005000600012

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The number of citations of a scientific publication or of an individual scientist has become an important factor of quality assessment in science. We report a study of the statistical distribution of the citation index of both scientific publications and scientists. We give numerical evidence that Tsallis (power law) statistics explains the entire distribution over eight orders of magnitude (10(-4) to 10(4)). Also, we draw Zipf plots in order to analyze the statistical distribution of the citation index of Brazilian and international physicists and chemists. The relatively small group of Brazilian scientists seems more adequate to explain the dynamics of the citation index. In this case, we find that the distribution of the citation index can also be explained by a gradually truncated power law with similar parameters. We finally discuss possible mechanisms behind the citation index of scientists and scientific publications.

引用

页码：981 / 986

页数：6

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