Modeling of location-distribution considering customers with different priorities by a lexicographic approach

In this paper, a multi-echelon location-distribution problem is modeled considering customer priorities. a lexicographic approach is implemented to determine the most preferred distribution path according to the priorities of customers. the predetermined number of trucks moving from depots and satellites is considered in the proposed model. the results show that the proposed approach can better consider the customers with different priorities, while more important customers will have low total costs compared to the classical approach. moreover, the sensitivity analysis has been done for discovering the effects of related parameters in the model.