拆分取货和拆分交付VRP的分支和价格方法

Q2 Mathematics

Electronic Notes in Discrete Mathematics Pub Date : 2018-08-01 DOI:10.1016/j.endm.2018.07.025

Marco Casazza , Alberto Ceselli , Roberto Wolfler Calvo

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引用次数: 11

摘要

在本文中，我们解决了一个取货和送货车辆路由问题，其中取货和送货节点的需求可以在几辆车辆之间进行分割。我们研究了一种新的公式，其中每辆车的路线被分解成一系列更简单的子结构，称为簇，减轻了可行解的组合爆炸。我们实现了一个分支和价格算法，利用动态生成集群的列生成过程来获得改进的对偶边界，并利用特别分支策略来实现完整性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A branch and price approach for the Split Pickup and Split Delivery VRP

In this paper we address a Pickup and Delivery Vehicle Routing Problem where the demands of both pickup and delivery nodes can be split between several vehicles. We investigate a new formulation where the route of each vehicle is decomposed into a sequence of simpler substructures called clusters, mitigating the combinatorial explosion of feasible solutions. We implement a branch-and-price algorithm exploiting column generation procedures that dynamically generates clusters to obtain improved dual bounds, and ad hoc branching strategies to achieve integrality.

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来源期刊

Electronic Notes in Discrete Mathematics Mathematics-Discrete Mathematics and Combinatorics

CiteScore

1.30

自引率

0.00%

发文量

期刊介绍： Electronic Notes in Discrete Mathematics is a venue for the rapid electronic publication of the proceedings of conferences, of lecture notes, monographs and other similar material for which quick publication is appropriate. Organizers of conferences whose proceedings appear in Electronic Notes in Discrete Mathematics, and authors of other material appearing as a volume in the series are allowed to make hard copies of the relevant volume for limited distribution. For example, conference proceedings may be distributed to participants at the meeting, and lecture notes can be distributed to those taking a course based on the material in the volume.