Evaluation Method for Node Importance of Urban Rail Network Considering Traffic Characteristics

Abstract

As a sustainable means of public transport, the safety of the urban rail transit is a significant section of public safety and is highly important in urban sustainable development. Research on the importance of urban rail stations plays an important role in improving the reliability of urban rail networks. This paper proposed an improved method for evaluating the importance of urban rail stations in a topology network, which was used to identify the key stations that affect the urban rail network performance. This method was based on complex network theory, considering the traffic characteristics of the urban rail network that runs on specific lines and integrating the structural characteristics and interrelationship of the lines where the stations are located. Hereafter, this method will be abbreviated as CLI. In order to verify that the high importance stations evaluated by this method were the key stations that had a great impact on the urban rail network performance, this paper designed a comparative attack experiment of betweenness centrality and CLI. The experiment was carried out by taking the Suzhou Rail Transit (SZRT) network as an example and the largest connected subgraph as well as the network efficiency as indicators to measure the network performance. The results showed that CLI had a greater impact on network performance and could better evaluate the key stations in the urban rail network than node degree and betweenness centrality.

A Category Classification Based Safety Risk Assessment Method for Railway Wagon Loading Status

“…Freight inspection refers to the use of technical means such as metrological safety equipment, video monitoring equipment, etc. to inspect and confirm the loading of goods, wagon bodies, and the status of goods during transportation [29]. The goods handled on the industrial siding shall go through the operations such as handling condition verification, wagon handover (empty wagon), loading operation on the industrial siding, wagon handover (loaded wagon), wagon pickup and delivery operation (dispatch), freight inspection, wagon pickup and delivery operation (arrival), etc.…”

Assessment and solutions for vulnerability of urban rail transit network based on complex network theory: A case study of Chongqing

“…For instance, some scholars have combined network efficiency with global indicators like the maximum connected subgraph [ 25 , 26 ] and the largest connected component (LCC) ratio [ 27 ]. Others have integrated degree and betweenness centrality with accessibility [ 28 ], connectivity [ 29 ], and network efficiency [ 30 , 31 ] using the entropy method and weighting method. Compared to using a single indicator, these new assessment methods offered a more accurate evaluation of the key nodes in RTN [ 28 , 32 ].…”

“…Others have integrated degree and betweenness centrality with accessibility [ 28 ], connectivity [ 29 ], and network efficiency [ 30 , 31 ] using the entropy method and weighting method. Compared to using a single indicator, these new assessment methods offered a more accurate evaluation of the key nodes in RTN [ 28 , 32 ]. Moreover, some scholars have considered PFV (passenger flow volume) while exploring network features, as it reflected the transportation capacity of RTN.…”

A Comprehensive Evaluation Method of Machining Center Components’ Importance Based on Combined Variable Weight

“…Research on node importance evaluations has mainly been focused on complex networks, and a variety of related techniques and methods for finding key nodes that affect the structure and function of the network have been proposed, which is the focus in the field of network science [5][6][7][8][9]. The characteristics of a network are extended to hardware systems.…”