Study on location planning with grade nodes of urban logistics

Logistics node is an important carrier to speed up the development of logistics and appropriate location of different grade logistics nodes plays a vital role for the development of urban modern logistics. This paper focuses on co-location problem of different grade logistics nodes. In this study, a comprehensive evaluation system with index membership formula is designed based on SE-DEA model. And a dynamic optimization model of grade nodes is also established on the foundation of Mixed Integer Programming. Finally the case of a Chinese city verifies the versatility and effectiveness of the idea, the model and the method in this study.