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arXiv 1909.07893cs.AI
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基于历史解的车辆路径规划

Vehicle routing by learning from historical solutions

Vrije Universiteit Brussel(布鲁塞尔自由大学)

Rocsildes Canoy, Tias Guns

摘要:

本文的目标是研究车辆路径的决策支持系统,其中的路由引擎从人类规划者在过去所做的主观决策中学习,而不是优化基于距离的客观标准。这是为每个有自己路由要求的公司制定自定义VRP的做法的替代方案。相反,我们假设存在过去的车辆路径解决方案在类似的客户集,并学习做出类似的选择。该方法基于学习一阶马尔可夫模型的概念,该模型对应于概率转移矩阵,而不是确定性距离矩阵。然而,这允许我们使用现有的弧路由VRP软件在创建实际的路线计划。对于学习,我们探索了不同的方案来构建概率转移矩阵。我们在一个小型运输公司的用例上的结果表明,我们的方法能够生成接近手动创建的解决方案的结果,而不需要明确地描述所有约束和子目标。即使在客户端集合发生变化的情况下,我们的方法也能够找到比使用距离时更接近实际路线计划的解决方案,因此,需要更少手动更改才能转换为实际路线计划的解决方案。

英文摘要:

The goal of this paper is to investigate a decision support system for vehicle routing, where the routing engine learns from the subjective decisions that human planners have made in the past, rather than optimizing a distance-based objective criterion. This is an alternative to the practice of formulating a custom VRP for every company with its own routing requirements. Instead, we assume the presence of past vehicle routing solutions over similar sets of customers, and learn to make similar choices. The approach is based on the concept of learning a first-order Markov model, which corresponds to a probabilistic transition matrix, rather than a deterministic distance matrix. This nevertheless allows us to use existing arc routing VRP software in creating the actual route plans. For the learning, we explore different schemes to construct the probabilistic transition matrix. Our results on a use-case with a small transportation company show that our method is able to generate results that are close to the manually created solutions, without needing to characterize all constraints and sub-objectives explicitly. Even in the case of changes in the client sets, our method is able to find solutions that are closer to the actual route plans than when using distances, and hence, solutions that would require fewer manual changes to transform into the actual route plan.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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