An Integrated Sustainable and Flexible Supplier Evaluation Model under Uncertainty by Game Theory and Subjective/Objective Data: Iranian Casting Industry

Abstract

According to the rapid growth of sustainability in supply chain management in recent years, experts are encouraged to consider more detailed social and environmental factors in their assessment models. In our proposed model for investigating the mentioned factors in more real condition and to obtain superior indices, the best–worst method and stepwise weight assessment ratio analysis method have been suggested for subjective and objective data which have been prepared based on specialist opinion and real registered data, respectively. Game theory has been applied to explore more appropriate combinations of subjective and objective weights and decreasing the conflicts, while DEMATEL was employed to define the internal relationship of the criteria. For tackling the inhomogeneous information and input data’s uncertainty, Dempster–Shafer theory has been applied. Finally for assessment of the proposed model, real data from an Iranian Casting Factory would have been considered for sustainable/flexible supplier selection.