四维搜索—交通OD流的一种解法

Four-demensional Search Method——A Solution for OD Traffic Flow

交通 OD流的解法从二维搜索发展到三维探索 ,本文提出四维搜索的方法。二维搜索是解决所谓的“两端守恒”问题 ,三维搜索是求解网络特性参数问题 ,而四维搜索则是将节点的直达流与迂回流分离 ,即求解节点发生量和集中量问题。

In order to solve the OD traffic flow,it was developed from the methods of two demensional search to three demensional search,and now we advance a four demensional search method.The two demensional search mathod is to solve the problem so called“keep the matrix equilibrium with two sides”,the three demensional search method is to solve the problem about a characteristic coefficient,and the four demensional search methed is to separate the traffic flow in two parts:the through flow and the wind flow,that is to find the arrival flow and the departure flow of a node of a traffic network.