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Optimization of efficient path selection criteria in urban rail transit passenger assignment

机译：城市轨道交通乘客分配高效路径选择标准的优化

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摘要

In urban rail transit systems, passengers take a portion of paths (which are called efficient paths) into consideration and ultimately choose one route from them. The correctness of alternative efficient paths has a direct impact on the final result of the passenger assignment model, which plays a key role in urban rail transit planning and operation. The criteria of path selection mainly influence the validity of efficient paths. In this study, alternative efficient path sets under different criteria are investigated based on the route choices of urban rail transit passengers in Shanghai, China, which is derived from mobile phone data. By changing threshold values, two types of risks are analysed to illustrate the difference between alternative and actual efficient path sets. The paper further proposes two optimization methods with the objectives of minimizing the sum of two types of risks. The first one is adopting threshold combination, while the second one is adjusting the limit of interchange times according to the shortest path's interchange times. Experiments show that no matter how much the limit of interchange times is, the performance of alternative efficient path sets under threshold combination is better than the ones under a single threshold (such as absolute and relative threshold). The result also shows that the second method can obviously prevent inefficient paths from entering alternative sets.
机译：在城市轨道交通系统中，乘客考虑到一部分路径（称为有效路径），并最终从中选择一条路线。替代有效路径的正确性对乘客分配模式的最终结果产生了直接影响，这在城市轨道交通规划和运营中起着关键作用。路径选择的标准主要影响有效路径的有效性。在这项研究中，根据中国上海市上海城市铁路运输乘客的路线选择，研究了不同标准下的替代有效路径集，这是来自移动电话数据的城市轨道交通乘客。通过改变阈值，分析了两种类型的风险以说明替代和实际有效路径集之间的差异。本文进一步提出了两种优化方法，目的是最小化两种类型的风险总和。第一个是采用阈值组合，而第二个是根据最短路径的交换时间调整交换时间的极限。实验表明，无论交换时间的极限是多少，阈值组合下的替代有效路径集的性能优于单个阈值（例如绝对和相对阈值）。结果还表明，第二种方法可以显然可以防止进入替代集的低效路径。

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