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| Structure Characteristics of Air-rail Double-layer Weighted Network Based on Multilayer Network |
| XU Feng1a,2, ZHU Jinfu2, CHEN Dan1b
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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 |
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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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Received: 14 October 2021
Published: 19 April 2023
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