Behnam Vahdani - Department of Industrial and Mechanical Engineering, Qazvin Azad University, Qazvin, Iran
Akbar Alem-Tabriz - Department of Industrial Management, Management and Accounting Faculty, Shahid Beheshti University, G.C., Tehran, Iran
Mostafa Zandieh - Department of Industrial Management, Management and Accounting Faculty, Shahid Beheshti University, G.C., Tehran, Iran

The objective of this article is to develop an empirically based framework for formulating and selecting a vendor in supply chain. This study applies the fuzzy set theory to evaluate the vendor selection decision. Applying Analytic Hierarchy Process (AHP) in obtaining criteria weights and applied Technique for Order Performance by Similarity to Idea Solution (TOPSIS) for obtaining final ranking of vendors. The usefulness of this model is explained through an empirical study for vendor selection.

vendor s selection; Fuzzy multi criteria decision making (FMCDM); Technique for Order Performance by Similarity to Idea Solution (TOPSIS); Analytic hierarchy process (AHP)