A bi-level programming model for location of commodity exchange markets

The objectives of commodity exchange market location problem and shortcomings of the available programming models are analyzed. In this paper, by considering benefits of customers and planning departments of commodity exchange markets, a bi-level programming model is presented to seek the optimal location for commodity exchange markets. The upper level problem is to maximize the gross benefit from the terms of decision makers by taking account of the relationships of the total cost for building commodity exchange markets and user demand. The lower level describes the users' choice behavior. The users choose commodity exchange markets corresponding to the biggest utility. Aiming at the model, a heuristic algorithm is designed; the feasibility of the model and algorithm is also verified by a calculation example.