中国物理B ›› 2012, Vol. 21 ›› Issue (2): 28902-028902.doi: 10.1088/1674-1056/21/2/028902

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

范正平   

  • 收稿日期:2011-08-16 修回日期:2011-08-31 出版日期:2012-01-30 发布日期:2012-01-30
  • 通讯作者: 范正平,fanzhp@mail.sysu.edu.cn E-mail:fanzhp@mail.sysu.edu.cn

Evaluating the AS-level Internet models: beyond topological characteristics

Fan Zheng-Ping(范正平)   

  1. Department of Automation, Sun Yat-Sen University, Guangzhou 510275, China
  • Received:2011-08-16 Revised:2011-08-31 Online:2012-01-30 Published:2012-01-30
  • Contact: Fan Zheng-Ping,fanzhp@mail.sysu.edu.cn E-mail:fanzhp@mail.sysu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 60704045 and 60804012) and the Fundamental Research Funds for the Central Universities (Grant No. 09Lgpy57).

Abstract: A surge number of models has been proposed to model the Internet in the past decades. However, the issue on which models are better to model the Internet has still remained a problem. By analysing the evolving dynamics of the Internet, we suggest that at the autonomous system (AS) level, a suitable Internet model, should at least be heterogeneous and have a linearly growing mechanism. More importantly, we show that the roles of topological characteristics in evaluating and differentiating Internet models are apparently over-estimated from an engineering perspective. Also, we find that an assortative network is not necessarily more robust than a disassortative network and that a smaller average shortest path length does not necessarily mean a higher robustness, which is different from the previous observations. Our analytic results are helpful not only for the Internet, but also for other general complex networks.

Key words: AS-level Internet, scale-free model, robustness

中图分类号:  (World Wide Web, Internet)

  • 89.20.Hh
05.70.Ln (Nonequilibrium and irreversible thermodynamics) 87.23.Ge (Dynamics of social systems)