基于灾度相对分类的应急物流中心选址

Emergency Logistics Service Facilities Center Location Algorithm based on Relative Classification of Disaster Degree

与普通物流服务以成本效益为目标不同,应急物流服务要求以时间效益最大化和灾害损失最小化为目标,因而普通物流服务的设施中心选址的方法往往不适用于应急物流服务的设施中心选址。而现有应急物流服务设施中心的选址模型存在一定的不足,而且没有考虑各受灾点的受灾程度及相应的应急物资需求的差异。为此,本文提出基于灾度相对分类的应急设施服务中心选址算法,以聚类分析方法选取灾损较严重的受灾点为服务设施节点,然后采用重心法进行应急服务设施中心选址。最后,以实例仿真说明算法的有效可行。

Usually the primary objective of general logistics is cost efficiency, while the goal of emergency logistics is to pursue the maximum of time efficiency and minimum of disaster loss. So the method of common logistics service center location doesn＇t meet the requirements of emergency logistics service center location. Furthermore the degree of damage and the different requirement of emergency supplies haven＇t been considered in the existing location models. Therefore, an emergency logistics facilities service center location algorithm based on relative classification of disaster degree is put forward in this paper. In the algorithm points dam- aged more seriously will be selected as service facilities points using clustering method. And then emergency service center location will be set using center of gravity method selection. Finally a simulation shows the algorithm is effective and feasible.