Refinements of the column generation process for the Vehicle Routing Problem with Time Windows

被引：6
|
作者：
Jesper Larsen
机构：
[1] Technical University of Denmark,Informatics and Mathematical Modelling
来源：
Journal of Systems Science and Systems Engineering | 2004年 / 13卷 / 3期
关键词：
Vehicle routing; time windows; column generation; shortest path; branch-and-bound;
D O I：
10.1007/s11518-006-0168-9
中图分类号：
学科分类号：
摘要：
The Vehicle Routing Problem with Time Windows is a generalization of the well known capacity constrained Vehicle Routing Problem. A homogeneous fleet of vehicles has to service a set of customers. The service of the customers can only start within a well-defined time interval denoted the time window. The objective is to determine routes for the vehicles that minimizes the accumulated cost (or distance). Currently the best approaches for determining optimal solutions are based on column generation and Branch-and-Bound, also known as Branch-and-Price. This paper presents two ideas for run-time improvements of the Branch-and-Price framework for the Vehicle Routing Problem with Time Windows. Both ideas reveal a significant potential for run-time refinements when speeding up an exact approach without compromising optimality.
引用
收藏
页码：326 / 341
页数：15
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