Computational Study Instances of the Multi-visit Drone Pickup and Delivery Routing Problem Considering Time Windows

The set includes all instances used in the multi-visit drone pickup and delivery problem considering time windows: 1. Small instances 2. Large instances 3. Instances for sensitivity analysis 4.Instances based on a real network本数据集包含所有用于考虑时间窗（Time Windows）的多行程无人机取送货问题（Multi-visit Drone Pickup and Delivery Problem）的测试实例，具体分为以下四类： 1. 小型测试实例 2. 大型测试实例 3. 用于敏感性分析的测试实例 4. 基于真实路网的测试实例