南京大学学报(自然科学版) ›› 2019, Vol. 55 ›› Issue (5): 709717.doi: 10.13232/j.cnki.jnju.2019.05.001
• • 下一篇
Guiqing Wang,Jie Yuan,Qinghong Shen()
摘要:
随着交通规模的增大,人们对自驾出行的质量需求越来越高,而在当前的交通最优路径选择的研究中,大多只考虑静态的交通路网场景,且忽略了通过交叉口时的代价,造成计算结果和实际行驶的代价之间误差较大.针对这一问题,基于Petri网络,建立了更精确的多因素道路交叉口交通路网模型,提出了基于精英蚁群算法的交通最优路径选择算法,并对经典蚁群算法提出两个方面的改进:第一,在信息素浓度的初始化过程中加入主干道引导和行车方向的引导,以加快蚂蚁群初始的搜索速度;第二,在全局信息素浓度更新时,使用双精英蚂蚁策略,采用相互约束的方式更新两条最优路径上的信息素浓度,解决了算法过早陷入停滞的问题,且计算出多个可供选择的路径.仿真结果表明,该算法在保证收敛性的同时,将搜索到最优路径的概率提升至100%;同时,在得到最优解概率均不低于90%的前提下,该算法的收敛速度是其他算法的数倍.
中图分类号:
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