Issue
EPL
Volume 88, Number 3, November 2009
Article Number 38002
Number of page(s) 5
Section Interdisciplinary Physics and Related Areas of Science and Technology
DOI http://dx.doi.org/10.1209/0295-5075/88/38002
Published online 11 November 2009
EPL, 88 (2009) 38002
DOI: 10.1209/0295-5075/88/38002

Degree correlations in citation networks model with aging

Xianmin Geng and Ying Wang

Nanjing University of Aeronautics and Astronautics - Nanjing, 210016, PRC

pepper_85@yahoo.cn

received 8 June 2009; accepted in final form 13 October 2009; published November 2009
published online 11 November 2009

Abstract
The age of the papers accepted play an important role in deciding the characteristics of citation networks. In this paper, using the rate equation approach under the assumption of continuous degree, we study the two-node degree correlations in citation networks model with aging. Analytical results reveal that the citation network is assortative mixing. The obtained result is in agreement with the characteristic of real citation networks.

PACS
89.75.Hc - Networks and genealogical trees.
87.23.Ge - Dynamics of social systems.
05.65.+b - Self-organized systems.

© EPLA 2009