Supplier's Selection Problem in Multiple Sourcing Cases under Uncertainty Environment: Models and Solution Procedures

All existent activities in supply chain are to supply market demand by providing products with maximum quality, minimum price and in due date to customers. Due to suppliers have basic role on criteria: cost, quality, etc. at access to the goals of supply chain, suppliers are a critical component of an organization that can have effect on the performance of the organization. Because of these diverse effects, accurate and efficient techniques application seems to be necessary for suppliers’ evaluation and selection and order allocation to them. Thus, the wide range of techniques has been presented by several researchers to examine suppliers’ selection problem. Therefore, in this paper first the suppliers’ selection problem and process is explained. Then, methods and some studies for the each stage of the suppliers’ selection process are presented. Since suppliers’ selection problem often face with uncertainty and constraints for buyer and suppliers in real world, some done researches in multiple sourcing field under uncertainty environment are only studied in the last stage of the suppliers’ selection process. Finally, conclusion and suggestions are provided for future research.