Scale-free analysis of subway network

被引：6

作者：

Wang, Zhiru ^{[1
]}

Liang, Zuolun ^{[2
]}

Yuan, Jingfeng ^{[1
]}

Li, Qiming ^{[1
]}

机构：

[1] School of Civil Engineering, Southeast University

[2] The Fourteenth Research Institute of China Electronics Technology Group Corporation

来源：

Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition) | 2013年 / 43卷 / 04期

关键词：

Complex network; Scale-free; Shifted power law; Subway network;

D O I：

10.3969/j.issn.1001-0505.2013.04.041

中图分类号：

学科分类号：

摘要：

The number of topological lines that passes by subway station is taken as the quantitative criteria of the degree distribution of metro networks and the degree distribution function is fitted by the nonlinear ordinary least squares (OLS method). First, the topological line is defined and the calculation methods of degree and degree distribution are proposed. Finally, statistical analysis of 52 metro network samples is carried out. The results show that the degree distribution of 52 subway networks can be fitted by SPL (shifted power law) function, and the scale factor -b falls in the range of 2 to 3 for large networks of more than 300 stations and 0<a<1, which indicates that degree distribution of subway networks is between exponential and power law distribution. This conclusion coincides with actual evolution of subway networks.

引用

页码：895 / 899

页数：4

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