Research On Location Of Distribution Center In Chain Enterprises Based On Multi-objective Particle Swam Optimization Algorithm

With the continuous development of social economy,chain enterprises have developed rapidly.Distribution center as the core link of chain enterprise logistics system,its location not only directly affects the overall economic benefits of enterprises,and gradually become the key to the core competitiveness of chain enterprises.In this paper,the supermarket chain as an example,from the total cost of logistics enterprises,based on the delivery time of the quality of service and other related factors,the combination of theory and examples of the distribution center location issues were studied.First of all,this paper introduces the background and significance of the research,the current situation of domestic and foreign research and the overall research framework of the article.And then introduced the relevant theoretical basis about location,including the concept of distribution center,type,site selection principles and procedures and the site of the relevant factors.Secondly,according to the proposed problem,taking the total cost of logistics to get the objective function:and the quality of distribution service to get the objective function:the mathematical model of multi-objective location with constraints is established,and several classical methods of solving multi-target optimization model are intro-duced,and put forward using the improved multi-objective particle swarm optimiz-ation algorithm solving the location model.Thirdly,the basic particle swam algorithm and multi-objective particle swam algorithm are introduced,and the multi-objective particle swarm algorithm which is improved is applied to multi-target location model to solve the multi-target location problem with constraints.Finally,the multi-target location model established in the third chapter is applied to the case of chain supermarket distribution center.First,we use Lingo software to optimize the two objective functions to obtain two kinds of site selection schemes,then,according to the improved multi-objective particle swam algorithm proposed in the fourth chapter,we use Matlab software to calculate the model and get a set of efficient non dominated solutions of the model,and then use AHP to select a satisfactory location scheme from non-inferior solution,finally,according to the different values of the objective function to compare the merits of the selected program to determine the final location scheme.This model can provide a more comprehensive and reliable guidance for the location of logistics distribution center of chain enterprises.