基于复杂网络的城市公交网络分析

Analysis of Urban Public Transit Network Based on Complex Network

复杂网络作为研究大型真实网络的一种新型工具,特别是小世界网络和无标度网络的提出,为分析城市交通网络结构以及缓解现存的交通问题提出了一些新的理论和方法.以兰州市公交为例,运用图论和改进的L空间法构建了公交站点网络,并对网络的静态几何量进行了统计,以此为依据分析了兰州市公交站点网络的拓扑结构、度分布以及集聚性,结果表明兰州市公交网络具有无标度特性,同时由于聚类系数不大,使得网络的社团化程度不是很高.

As a new tool for the study of real network,the complex network,especially the small-world network and scale-free network,puts forward some new theories and methods for the anal-ysis of the structure of urban traffic network and traffic problems.Taking Lanzhou City as an ex-ample,the topological structure,degree distribution and clustering coefficient of the transit net-work are analyzed based on the established public transit sites network by using the graphic theo-ry,the improved space L and the static geometry statistics.The result of study indicates the topol-ogical structure has scale-free characteristic.At the same time,the organization degree of network is not very high for a small clustering coefficient.