Empirical modeling of the impact factor distribution

作者：

Highlights：

• We model empirically the distribution of impact factors.

• The Dagum and Singh-Maddala models are compared with the two-exponent law.

• Compared to the latter, the former models give as good as or better fit to data.

• The Dagum and Singh-Maddala models have also more attractive statistical properties.

摘要

Highlights•We model empirically the distribution of impact factors.•The Dagum and Singh-Maddala models are compared with the two-exponent law.•Compared to the latter, the former models give as good as or better fit to data.•The Dagum and Singh-Maddala models have also more attractive statistical properties.

论文关键词：Impact factor,Two-exponent law,Dagum model,Singh-Maddala model,Maximum likelihood estimation,Model selection

论文评审过程：Received 25 December 2013, Revised 17 January 2014, Accepted 20 January 2014, Available online 11 February 2014.

论文官网地址：https://doi.org/10.1016/j.joi.2014.01.009