An Inventory Control Model for Stone Industry under a Fuzzy Random Environment

This paper proposes a bilevel optimization model with fuzzy random coefficients to tackle an inventory control problem for the stone industry with the aim of minimizing the inventory cost and the cost of quarrying and processing and ensuring meet the requirements of order. On the upper level, the goal of inventory department is to minimize the cost and inventory space at the same time. On the lower level, the quarrying management’s aim is to minimize the cost of quarrying and processing and ensuring meet the requirements of order. A compromised point-based GA is proposed to solve the bi-level programming model with fuzzy random coefficients. Finally, a case study is presented to demonstrate the practicality and efficiency of the model.