Research On Integrated Three-dimensional Transportation Passenger Network Base On Overlapping Community Division

In order to enhance the interconnectivity and coordinated development of comprehensive multi-dimensional passenger transportation between regions,this study focuses on the comprehensive multi-dimensional transportation passenger system.Based on the relevant theory of complex networks,separate single-layer networks for high-speed rail,conventional rail,expressways,national highways,and aviation passenger transportation are constructed according to the actual passenger transportation routes between cities using different modes of transportation.These individual networks are then interconnected by common passenger transportation cities within each layer to form a comprehensive multi-dimensional transportation passenger relationship network.The method of community detection,suitable for analyzing the overall structure of networks,is employed.Due to the majority of passenger nodes in the network existing in multiple transportation relationship networks and possessing multiple attributes,an overlapping community detection method is selected to assign nodes with different properties within the same city to different communities.Finally,by analyzing the results of overlapping community detection,issues in the development of the comprehensive multi-dimensional transportation system are identified,and corresponding policy recommendations are proposed.The study reveals that the interconnectivity between the expressway layer and the national highway layer with other transportation layers is relatively high,while the interconnectivity between the conventional rail layer and the aviation layer with other transportation layers is relatively low.When the comprehensive multi-dimensional transportation passenger relationship network is divided into 11 overlapping communities,it shows tight connections within communities and sparse connections between communities.The provinces of Gansu and Xinjiang Uyghur Autonomous Region in the northwest region exhibit inadequate integration into the comprehensive multi-dimensional transportation system,lower levels of integrated development among various regions,and uneven development of influential nodes in the comprehensive passenger transportation system across different regions.In response to these issues,policy recommendations are proposed from the perspectives of integrated development among regions and coordinated development of comprehensive transportation modes.