A Supplier Selection Approach based on the Combination of AHP and Rough set

The analytic hierarchy process (AHP) approach is often used in supplier selection. But due to its inherent subjectivity, the evaluation information based on human judgments often creates conflict and bears some kind of uncertainty. To overcome this, the paper proposed a model using the combination of rough set theory and analytic hierarchy process for supplier selection problem. Then a case study of a company dealing with selection of logistics supplier is used to illustrate this composite model using both rough set and AHP approach. The proposed model can provide guidelines and directions for managers involved in purchasing the logistics service to reduce the redundant criteria and consider both subjective and objective factors when evaluating the suppliers.