文档介绍：UTLogo100Stochastic ProgrammingSchool of Management, UCASReverse Logistics DesignKai YaoSchool of Management, UCASKai ******@ ProgrammingSchool of Management, UCASReverse Logistics ProblemConsumersCollection CentersManufactoryReverse logistics problem is to(i) choose the sites of collection centers from the potential sets;(ii) determine the amount of products returned by each collection centerfrom ******@ ProgrammingSchool of Management, UCASIndex Setsi= 1,2,· · ·,I: existing consumer zones;j= 1,2,· · ·,J: potential collection Parametersξi: volume of products returned by consumeri;ηj: cost of opening collection centerj;ζj: unit cost of handling in the collection centerj;ci: unit penalty cost of non-returned products from consumeri;pij: cost of unit product transported from consumerito collection centerj;qj: cost of unit product transported from collection centerjto the factory;Vj: maximum capacity of collection centerj;M: maximum number of established collection centers;α: consumer service level;Kai ******@ ProgrammingSchool of Management, UCASDecision Variablesxij: volume of retu