江苏省货运铁路网络关键节点和连边识别

Identification of key nodes and edges of freight railway network in Jiangsu province

为准确识别货运铁路网络的关键节点和连边,利用Space L法构建了网络拓扑结构模型,在分析网络静态特征的基础上,选用网络效率相对变化率指标识别网络中的关键节点和连边。研究结果表明网络中的关键节点多为度值较大、介数较高的节点,关键连边多为介数较大的连边。

In order to accurately identify the key nodes and edges of the freight railway network,a network topology model was first constructed using the Space L method.On the basis of analyzing the static characteristics of the network,the relative rate of change index of network efficiency was selected to identify the key nodes and edges in the network.The research results show that the key nodes in the network are mostly nodes with larger degree value and higher betweenness,and the key links are mostly links with larger betweenness.