Structure Characteristics of Air-rail Double-layer Weighted Network Based on Multilayer Network
XU Feng1a,2, ZHU Jinfu2, CHEN Dan1b
1. a. School of Economics and Management, NanJing Institute of Technology, b. College of Automobile and Rail Transportation, NanJing 211167, China; 2. College of Civil Aviation, NanJing University of Aeronauticsand Astronautics, NanJing 211106, China
Abstract：In order to solve the problem that the complex structure of air-rail combined transportation system cannot be described effectively based on the single-layer network, considering the heterogeneity of nodes, connecting edges and side weights, an air-rail double-layer weighted network model is proposed based on multilayer network. The structure characteristics of the air-rail network of China Eastern Airlines are empirically analyzed from four aspects: scale-free characteristic, small-world characteristic, centrality and interlayer correlation. The results show that both the air-rail double-layer network and its subnets have scale-free characteristics and small-world characteristics. The centrality of China Eastern Airport network layer is prominent, and the centrality distribution of air-rail double-layer network is not balanced. There is a weak correlation between airport layer and high-speed rail layer, and the tightness of the relationship between them needs to be strengthened. The overall structure and function of East-China Airlines’ air-rail network are good. It is conducive to improve the matching degree between airports and high-speed rail stations for improving the efficiency of air-rail.
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