arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2006.09100cs.LGstat.ML
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基于联合注意力的带时间窗车辆路径问题求解

Learning to Solve Vehicle Routing Problems with Time Windows through Joint Attention

University of Hildesheim(希尔德斯海姆大学)

Jonas K. Falkner, Lars Schmidt-Thieme

摘要:

许多现实世界中的车辆路径问题涉及丰富的约束条件,车辆的容量,客户的时间窗口等,而在最近几年的第一个机器学习模型已经开发出解决基本的车辆路径问题的速度比优化算法,复杂的约束很少考虑。由于他们的一般程序,以建设解决方案,按路线依次路线,这些方法推广不利,这样的问题。在本文中,我们开发了一个政策模型,能够启动和延长多条路线,同时使用注意力的联合行动空间的几个旅游。通过这种方式,模型能够选择路线和客户,从而学会在路线之间进行艰难的权衡。在综合实验的三个变种的车辆路径问题的时间窗口,我们表明,我们的模型称为JAMPR工程以及不同的问题大小,并优于现有的国家的最先进的建设性模型。对于三个变体中的两个,它也创建了比可比的元启发式求解器更好的解决方案。

英文摘要:

Many real-world vehicle routing problems involve rich sets of constraints with respect to the capacities of the vehicles, time windows for customers etc. While in recent years first machine learning models have been developed to solve basic vehicle routing problems faster than optimization heuristics, complex constraints rarely are taken into consideration. Due to their general procedure to construct solutions sequentially route by route, these methods generalize unfavorably to such problems. In this paper, we develop a policy model that is able to start and extend multiple routes concurrently by using attention on the joint action space of several tours. In that way the model is able to select routes and customers and thus learns to make difficult trade-offs between routes. In comprehensive experiments on three variants of the vehicle routing problem with time windows we show that our model called JAMPR works well for different problem sizes and outperforms the existing state-of-the-art constructive model. For two of the three variants it also creates significantly better solutions than a comparable meta-heuristic solver.

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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