Establishment and Analysis of the Supernetwork Model for Nanjing Metro Transportation System

Yu Wei,Sun Ning

doi:10.1155/2018/4860531

Abstract

In recent years, many researchers have applied complex network theory to urban public transport network to construct complex network and analyze its network performance. The original analysis method generally uses the Space L and Space R model to establish a simple link between public sites but ignores the organic link between the overall network system and the line subsystem. As an important part of urban public transport system, subway plays an important role in alleviating traffic pressure. In this paper, a supernetwork model of Nanjing metro network is established by using the supernetwork method. Three parameters, node-hyperedge degree, hyperedge-node degree, and hyperedge degree, are proposed to describe the model. The model is compared with the traditional Space L and Space P models. The study on the supernetwork model of Nanjing metro complex network shows that the network density, network centrality, and network clustering coefficient are large, and the average network distance is small, which meets the requirements of traffic planning and design. In this study, the subway line is considered as a subsystem and further simplified as a node, so that the complex network analysis method can be applied to the new supernetwork model, expanding the thinking of complex network research.

Highlights

With the rapid development of urban construction, more and more cities in China have opened the subway
The hypernetwork model reflects the relationship between the subway station and the subway lines and the relationship between the subway lines
The analysis shows that the network density, network centrality, and network centrality of the metro hypernetwork in Nanjing are large, and the average distance of the network is small, which is in line with the ideal traffic planning and design

Summary

Introduction

With the rapid development of urban construction, more and more cities in China have opened the subway. Cats O establishes an evaluation model of public transport robustness and applies the model to Amsterdam urban rail transit network and evaluates the robustness of the network [13].Zhang J analyzed the complex network characteristics of the subway network in Beijing, Guangzhou, and Shanghai and studied the vulnerability of the subway network [14]. These studies include the construction of complex urban subway network, the analysis of its structural performance and robustness, and the establishment of subway network traffic flow model. It is called hypernetwork, and its corresponding edge is called hyperedge

Nanjing Metro Network

Hypergraph and Supernetwork Model

The Degree of Complex Network

Spatial Characteristics of Metro Network

Conclusions