中文摘要：

废弃物回收的物流网络设计是一种逆向物流问题．以其回收总成本最小并兼顾回收便利性为目标，设计改进的离散蜂群算法，提出包含回收点、回收中心和处理中心组成的多级逆向物流网络模型，以解决逆向物流中的车辆路径问题和选址分配问题．实验结果表明新算法是有效的，能够快速发现稳定高质的近似最优解．

英文摘要：

Logistics network for waste is a kind of reverse logistics. Targeting at minimal total cost and recycle efficiency, the paper develops an improved discrete artificial bee colony （ABC） algorithm, and proposes a multi - level reverse logistics network model including recycle spot, recycle center and process center, to solve the vehicle routing problem （VRP） and location allocation problem （LAP） of reverse logistics. The experiments show that the new algorithm is efficient, and can approach the opti-mal solutions quickly.