考虑供应商聚类的应急医疗物资协同配送仿真

针对突发公共卫生事件应急处置中存在的地方政府医疗物资储备不足、配送效率低下等问题，设计了一种考虑供应商聚类的两阶段应急医疗物资公私协同选址分配模型。在备灾时利用模糊聚类算法实现供应商聚类，并与政府建立合作机制以实现应急医疗物资联合储备；在救援初期依托政府和各类供应商的物资储备及运输能力，构建以最小化物流总成本与需求未满足率加权和为目标的选址分配仿真模型。设计改进的非支配排序遗传算法对此两阶段模型进行求解。以新冠肺炎疫情中武汉市医疗物资调度设计仿真算例，并对比有无供应商聚类对模型的影响。仿真结果表明：该模型在协调政府和供应商的应急医疗物资储备、运输以及调度决策方面具有优势。

Simulation of Emergency Medical Materials Collaborative Distribution Considering Supplier Clustering

Aiming at the insufficient local government medical material reserves and low distribution efficiency to public health emergencies, consider supplier clustering a two-stage emergency medical supplies public-private collaborative location and alloation model is designed. In for disaster preparedness, fuzzy clustering algorithm to realize supplier clustering, and a cooperation mechanism with the government is establish realize the joint storage of emergency medical supplies; In the early stage of rescue, relying on the government and various suppliers' material storage and transportation capabilities, a location allocation simulation model to minimize the weighted sum of total logistics cost and demand unsatisfied rate is constructed. An improved non-dominated sorting genetic algorithm is designed to solve this two-stage model. An example of the design of medical supplies scheduling in Wuhan during Covid-19 epidemic and the impact of supplier clustering on the model is compared. The simulation results show that the model has advantages in coordinating the emergency medical supplies reserve, transportation and scheduling decisions of the government and suppliers.