摘要
SCOOT、SCATS等区域交通信号控制系统的关键路口通常根据交叉口交通流量、道路联接数等指标来确定,很难保证"蓄意"交通事件下区域网络运行的有效性。鉴于城市交通网络的无标度特性,以路段阻抗为权重将城市交通网络抽象为复杂加权网络,提出以网络凝聚度为指标的加权节点收缩方法,评估交叉口节点的重要性,解决区域交通网络hub点的选择问题,并用实例说明该方法的有效性,进而以SCATS系统为对象提出基于hub点选择的系统优化策略。
Generally speaking,key junction nodes of typical urban region traffic network control system like SCOOT and SCATS need to be defined according to traffic flow and connected links number in reality.However,once the attack of traffic incident in hub node happened,it is difficult to insure the effectiveness and stability of whole traffic network.Considering the free scale features of urban traffic network,this paper discussed how to select hub node in weighted complex traffic network,adopted weighted node contraction method to evaluate node importance,which took network agglomeration as index.And the effectiveness of the method was proved through an application case.Then the optimization strategies for SCATS system based on hub node selection were provided.
出处
《计算机应用》
CSCD
北大核心
2010年第4期1107-1109,共3页
journal of Computer Applications
基金
国家自然科学基金资助项目(60874052)
关键词
无标度网络
hub点
区域交通信号控制系统
加权节点收缩法
free scale network
hub point
region traffic signal control system
weighted node contraction method
