中国物理B ›› 2008, Vol. 17 ›› Issue (10): 3580-3587.doi: 10.1088/1674-1056/17/10/009

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Connectivity correlations in three topological spaces of urban bus-transport networks in China

陈永洲1, 李 南1, 付春花2, 常 慧2, 何大韧2   

  1. (1)College of Economics and Management, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China; (2)College of Physics Science and Technology, Yangzhou University, Yangzhou 225002, China
  • 收稿日期:2008-02-26 修回日期:2008-03-17 出版日期:2008-10-20 发布日期:2008-10-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos 70671089 and 10635040) and the foundation of XM06-142.

Connectivity correlations in three topological spaces of urban bus-transport networks in China

Chen Yong-Zhou(陈永洲)a), Fu Chun-Hua(付春花)b), Chang Hui(常慧)b), Li Nan(李南)a), and He Da-Ren(何大韧)b)†   

  1. a College of Economics and Management, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China; b College of Physics Science and Technology, Yangzhou University, Yangzhou 225002, China
  • Received:2008-02-26 Revised:2008-03-17 Online:2008-10-20 Published:2008-10-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos 70671089 and 10635040) and the foundation of XM06-142.

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摘要： In this paper, an empirical investigation is presented, which focuses on unveiling the universality of connectivity correlations in three spaces (the route space, the stop geographical space and bus-transferring space) of urban bus-transport networks (BTNs) in four major cities of China. The underlying features of the connectivity correlations are shown in two statistical ways. One is the correlation between the (weighted) average degree of all the nearest neighbouring vertices with degree $k$, ($K^w_{nn}(k)$) $K_{nn}(k)$, and $k$, and the other is the correlations between the assortativity coefficient $r$ and, respectively, the network size $N$, the network diameter $D$, the averaged clustering coefficient $C$, and the averaged distance $\lan l\ran$. The obtained results show qualitatively the same connectivity correlations of all the considered cities under all the three spaces.

关键词: connectivity correlation, bus-transport network, universality

Abstract: In this paper, an empirical investigation is presented, which focuses on unveiling the universality of connectivity correlations in three spaces (the route space, the stop geographical space and bus-transferring space) of urban bus-transport networks (BTNs) in four major cities of China. The underlying features of the connectivity correlations are shown in two statistical ways. One is the correlation between the (weighted) average degree of all the nearest neighbouring vertices with degree $k$, ($K^w_{nn}(k)$) $K_{nn}(k)$, and $k$, and the other is the correlations between the assortativity coefficient $r$ and, respectively, the network size $N$, the network diameter $D$, the averaged clustering coefficient $C$, and the averaged distance $\langle l\rangle$. The obtained results show qualitatively the same connectivity correlations of all the considered cities under all the three spaces.

Key words: connectivity correlation, bus-transport network, universality

中图分类号:  (Land transportation)

  • 89.40.Bb
89.75.Hc (Networks and genealogical trees) 02.50.Ng (Distribution theory and Monte Carlo studies)