【摘要】 建立一个面向控制的城市交通网络模型,以结构矩阵的形式进行数学表示,引入序参量的概念来表征城市交通的拥堵状况,并提出了基于介数的具体删边扩容策略.将此策略应用到已建立的交通网络模型中进行仿真验证,证明了该策略在不影响行驶路径长度的前提下可以显著改善城市交通状况,并得出了删边比例与介数最大值成反比例的对应关系的结论.更多还原

【Abstract】 This paper establishes an urban traffic network model which is used with control methods, and is mathematical described by Structure matrix. The concept of order parameter is introduced to characterize the urban traffic congestion. Then this paper put forward a certain strategy of enhancing the transmission efficiency by edge deletion which is based on betweenness. This strategy is applied in the traffic network model which has been established. The simulation results show that, in the optimization of urban traffic, enhancing the transmission efficiency by edge deletion is an effective and low cost strategy. And a conclusion is drew that the corresponding relationship of edge deletion proportion and maximum betweenness is inversely proportional.更多还原