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has been cited by the following article:

• TITLE: The Study on the Hierarchy of Internet Router-Level Topology

  AUTHORS: Jun ZHANG, Hai ZHAO, Chao LI, Xin GE

  KEYWORDS: Complex Network, Hierarchy, Coreness, Power Law, Regionally, Internet

  JOURNAL NAME: International Journal of Communications, Network and System Sciences, Vol.2 No.4, July 16, 2009

  ABSTRACT: Being a huge system, Internet topology structure is very complex. It can’t be treated as a plane simply, and its hierarchy must be analyzed. We used the k-core decomposition to disentangle the hierarchical structure of Internet Router-level topology. By analyzing the router-lever Internet topology measuring data from CAIDA (The Cooperative Association for Internet Data Analysis) ,we studied the characteristics of the nodes in the inner hierarchy and outer hierarchy respectively. The frequency-degree power law of the nodes which core-ness is lower and the regionally distribution of the nodes which coreness is higher were concluded. At last, the topology of every hierarchy was described by giving their figures. These descriptions can provide a valuable reference for modeling on the Internet topology.