China Safety Science Journal ›› 2025, Vol. 35 ›› Issue (5): 229-236.doi: 10.16265/j.cnki.issn1003-3033.2025.05.1144

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Key node recognition of highway network in high altitude mountainous area based on improved LeaderRank algorithm

HE Yunyong1(), HE Enhuai1, CHEN Zhiyu1,**(), GAO Jianping2, ZHANG Le1, SUN Lu1   

  1. 1 Sichuan Highway Planning, Survey, Design and Research Institute Ltd., Chengdu Sichuan 610041, China
    2 School of Traffic & Transportation, Chongqing Jiaotong University, Chongqing 400074, China
  • Received:2024-12-16 Revised:2025-02-14 Online:2025-05-28 Published:2025-11-28
  • Contact: CHEN Zhiyu

Abstract:

To improve the stability and safety of highway networks in plateau mountainous areas, an evaluation index system for critical nodes was established by selecting five indicators: degree centrality, betweenness centrality, closeness centrality, travel time weight, and adjacent node travel time degree. A critical node ide.pngication method integrating topological structure and traffic functionality was proposed. Taking the highway network in western Sichuan Plateau mountainous region as a case study, the differential performance of three improved algorithms was investigated. This algorithms included modified LeaderRank, PageRank, and degree centrality. Their performance was examined in ide.pngying critical nodes within an undirected weighted network framework. Additionally, the variations in network efficiency and connectivity rate under node failure scenarios were systematically examined. The results demonstrate that the three algorithms exhibit distinct prioritization in assessing node criticality. Node failure sequences ranked by the modified LeaderRank algorithm induce the most rapid and significant decline in both network efficiency and connectivity rate.

Key words: improved LeaderRank, highway in plateau mountain area, network key node, node importance, complex network

CLC Number: