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Connectivity correlations in three topological spaces of urban bus-transport networks in China 被引量:3

Connectivity correlations in three topological spaces of urban bus-transport networks in China
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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 bustransport 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, (Knn^w,(k)) Knn(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 (l). The obtained results show qualitatively the same connectivity correlations of all the considered cities under all the three spaces. 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 bustransport 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, (Knn^w,(k)) Knn(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 (l). The obtained results show qualitatively the same connectivity correlations of all the considered cities under all the three spaces.
出处 《Chinese Physics B》 SCIE EI CAS CSCD 2008年第10期3580-3587,共8页 中国物理B(英文版)
基金 Project supported by the National Natural Science Foundation of China (Grant Nos 70671089 and 10635040) the foundation of XM06-142
关键词 connectivity correlation bus-transport network UNIVERSALITY connectivity correlation, bus-transport network, universality
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