Operations Research Transactions ›› 2020, Vol. 24 ›› Issue (4): 51-62.doi: 10.15960/j.cnki.issn.1007-6093.2020.04.004

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Research on the quadratic programming model and solution algorithm of critical nodes in metro network

GUO Xiaoling*, ZHUANG Yuanxin, LIU Yifan   

  1. College of Sciences, China University of Mining and Technology-Beijing, Beijing 100083, China
  • Received:2018-12-17 Published:2020-11-18

Abstract: Critical nodes in the metro network have an important impact on their connectivity. Under limited manpower and material resources, it is very important to find out the critical nodes for enhanced management to reduce the damage caused by random failures to the entire network. Comprehensively considering the impact of node removal on the overall structure and function of the weighted network, this paper presents a new measure of computing network connectivity-one-step and two-step connections based on the quadratic constrained quadratic programming model. An genetic algorithm is then designed according to the characteristics of the model. Finally, the Beijing metro network is taken as an example to solve the problem. The results show the effectiveness and superiority of the proposed method.

Key words: metro network, critical node, quadratic programming, genetic algorithm

CLC Number: