An integrated framework for supplier evaluation and order allocation in a non‐crisp environment

Supplier selection and related issues are among the most important decisions in the area of Supply Chain Management. A few of papers and studies have considered the major decisions related to supplier selection with non‐crisp data. This paper comes across with a novel approach to the problem by presenting an integrated framework which involves two stages: suppliers' evaluation and order allocation. In this way, for suppliers' evaluation, a Fuzzy Data Envelopment Analysis (Fuzzy DEA) model is conducted and then a multi‐objective integer programming with fuzzy objectives and fuzzy constraints is formulated to assign an optimal quantity of orders to suppliers.