大规模多模式交通网络构建方法对比分析

Comparative analysis of construction methods for large⁃scale multimodal transportation networks

针对目前大规模多模式交通网络构建方法对比研究的不足,对不同构建方法在计算效率与结果上的差异展开研究.首先,在6个不同规模公交网络上对比了公交区段和超路径2种网络表达方法对扩展网络规模的影响.其次,提出了公共交通站点与路网匹配连接方法,并使用节点压缩方法创建衔接网络.最后,在大规模多模式交通网络上,计算了10万对出租车载客行程OD的3种最短路径,并将其广义时间费用与实际出租车行程比较.研究结果表明:在计算耗时方面,路线>超路径>简单路径;在平均最短路径费用方面,简单路径>路线>超路径;与实际出租车行程相比,简单路径、路线和超路径最短路径费用更低的OD对比例分别为39.21%、41.29%和42.83%.

To address the lack of comparative studies on construction methods for large-scale multi⁃modal transportation networks,this paper investigates the differences in computational efficiency and results among different methods.Firstly,the paper compares the impact of two network representa⁃tion methods,i.e.,route section and hyperpath,on the scale of extended networks across six differentsized bus networks.Secondly,it proposes a method for connecting transit stations with road network,and uses the node contraction method to create joint networks.Finally,in a large-scale multimodal transportation network,three types of shortest paths,i.e.,simple path,route,and hyperpath,are computed for 100,000 OD pairs extracted from taxi trips,and their generalized time cost are compared with actual taxi trip costs.The research findings indicate that computation time follows the order of route>hyperpath>simple path,and the average shortest path cost follows the order of simple path>route>hyperpath.Compared with the actual taxi trips,the proportions of OD pairs with lower generalized time costs for simple path,route,and hyperpath are 39.21%,41.29%,and 42.83%,respectively.