Instances for the Clustered Vehicle Routing Problem

These are the banchmark test instances used in the following article: Defryn, C., & Sörensen, K. (2017). A fast two-level variable neighborhood search for the clustered vehicle routing problem. Computers & Operations Research, 83, 78-94.本数据集为下述论文中所采用的基准测试实例：Defryn, C. 与 Sörensen, K.（2017）。《面向聚类车辆路径问题的快速双层变邻域搜索》，《计算机与运筹学》，第83卷，第78-94页。