Supplier selection using rough set theory

The purpose of this study was to build a model of supplier selection to improve organizational capability and competitiveness, as well as to apply the model to solve practical problems. The critical criteria for supplier evaluation were chosen and the questionnaire was developed after literature reviewing. The questionnaire differentiates class 1 (excellent firms), class 2 (common firms), and class 3 (disappointed firms) from suppliers to be evaluated by participants. Next step was to use rough set theory (RST) to analyze the rules of supplier selection. After attribute reduct and core were derived, the decision-making rules were created by the supplier selection model. Rough set theory was adopted as main analysis method for enterprises to find the optimum supplier partners quickly and accurately in designing and organizing of supply chain.