A qualitative evaluation of suppliers in a supply network using Six Sigma criterion
by Hamed Fazlollahtabar; Hamed Hajmohammadi; Ali Khadem
International Journal of Applied Decision Sciences (IJADS), Vol. 5, No. 1, 2012

Abstract: This paper concerns with the suppliers evaluation problem in a supply network. Companies are forced to re-evaluate the way they do business in today's highly competitive and global marketplace. Customers are no longer making buying decisions based solely on product quality and price, but are now also demanding high levels of service and flexibility. Therefore, a comprehensive approach for evaluating the suppliers is required. As service and flexibility are qualitative parameters, the aforementioned approach should be based on quality control disciplines. Here, we use control charts as a control tool for the suppliers' performance and Six Sigma criterions for more precise investigations. A 0/1 integer programming approach is applied to identify the optimal set of suppliers in the supply network. The efficiency of the proposed mechanism is presented using numerical illustrations.

Online publication date: Sat, 09-Aug-2014

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