摘要
Logit是一种重要的随机网络配流模型,常用于市域、省域的交通分配预测。但该模型的Stoch算法在确定"合理路径"的关键步骤时存在漏洞,明显存在交通分配结果不合理问题。文中通过比较以往各种合理路径的算法,提出了一种既合理,又经济的算法。解决了Stoch算法中对合理路径定义不合理的问题,使得分配结果更合理,通过建立相关路网的实例检验,取得较好的效果。
The Logit-based loading model is an important stochastic network loading model,which is widely used in the traffic assignment of city-level and province-level.But there is a bug in the step of 'reasonable path' in Stoch algorithm of the model,which may lead to many improper results in traffic assignment.This paper made a suitable and convenient algorithm by making comparison of many earlier reasonable path algorithms,which solved the problem of improper definition of reasonable path in Stoch algorithm and made the result more reasonable.At last,a good result was obtained by an experiment.
出处
《交通信息与安全》
2009年第S1期24-27,共4页
Journal of Transport Information and Safety
关键词
合理路径
多路径模型
Stoch算法
reasonable path
multi-path assignment model
Stoch algorithm
