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A bi-objective model for uncertain multi-modal shortest path problems

机译:不确定多模态最短路径问题的双目标模型

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This paper employs uncertain programming to investigate the uncertain multi-modal shortest path problem, in which the arc weights (arc travel time, arc travel costs) associated with different transport modes are characterized by uncertain variables. By using the chance-constrained programming approach, we firstly formulate a bi-objective optimization model to minimize the total travel time and travel costs simultaneously with the given confidence levels. Moreover, using the basic concepts and properties in the uncertainty theory, we transform the proposed model into its deterministic crisp equivalent with an explicit proof. Finally, some numerical experiments are implemented to show the performance of the proposed approaches on a multi-modal transportation network with three specific modes.
机译:本文采用不确定程序设计研究不确定的多式联运最短路径问题,在该问题中,与不同运输方式相关的电弧权重(电弧行进时间,电弧行进成本)具有不确定变量。通过使用机会受限的编程方法,我们首先制定了一个双目标优化模型,以在给定置信度的同时最小化总旅行时间和旅行成本。此外,利用不确定性理论中的基本概念和性质,我们将提出的模型转换为具有明确证明的确定性明晰等效项。最后,通过一些数值实验来证明所提出的方法在具有三种特定模式的多式联运网络上的性能。

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