HIGHLIGHTS
SUMMARY
The Characteristics and Evolution of the Global HSR Network Structure To analyze the characteristics and evolution of China`s urban HSR network structure, this study introduces a social network approach to abstract 251 cities that have opened HSR networks in China into 251 nodes and constructs an HSR network among 251 cities in China. The density of the HSR network in the eastern coastal region is 0.888, indicating that approximately 90% of the cities in the HSR network in the eastern coastal region of China are connected in the network by 2020, and . . .

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