Document Type: Research Paper
Department of Mathematics, Central Tehran Branch, Islamic Azad University, Tehran, Iran
Faculty of Mathematics, Sistan and Baluchestan University, Zahedan, Iran
Supply chain management is the combination of art and science that goes into improving the supply chain. In some cases of supply chain especially two-stage process, differing weights for the same factors, may not acceptable. The purpose of this paper is a performance evaluation of two-stage using DEA and based on a CSW model and this method for ranking two-stage and could be used to measure the efficiency of two-stage.