tailieunhanh - Supplier selection using different metric functions
Supplier selection is an important component of supply chain management in today’s global competitive environment. Hence, the evaluation and selection of suppliers have received considerable attention in the literature. Many attributes of suppliers, other than cost, are considered in the evaluation and selection process. Therefore, the process of evaluation and selection of suppliers is a multi-criteria decision making process. | Yugoslav Journal of Operations Research 25 (2015), Number 3, 413-423 DOI: SUPPLIER SELECTION USING DIFFERENT METRIC FUNCTIONS Sunday. E. OMOSIGHO Department of Mathematics University of Benin, Benin City, Nigeria seomosigho@ Dickson E. A. OMOROGBE Institute of Education University of Benin, Benin City, Nigeria Received: July 2013 / Accepted: August 2014 Abstract: Supplier selection is an important component of supply chain management in today’s global competitive environment. Hence, the evaluation and selection of suppliers have received considerable attention in the literature. Many attributes of suppliers, other than cost, are considered in the evaluation and selection process. Therefore, the process of evaluation and selection of suppliers is a multi-criteria decision making process. The methodology adopted to solve the supplier selection problem is intuitionistic fuzzy TOPSIS (Technique for Order Preference by Similarity to the Ideal Solution). Generally, TOPSIS is based on the concept of minimum distance from the positive ideal solution and maximum distance from the negative ideal solution. We examine the deficiencies of using only one metric function in TOPSIS, and propose the use of spherical metric function in addition to the commonly used metric functions. For empirical supplier selection problems, more than one metric function should be used. Keywords: Supplier selection (a),TOPSIS (b), Metric functions (c), Spherical metric (d). MSC: 62C86. 1. INTRODUCTION Supplier evaluation and selection is a multi-criteria decision making problem involving many suppliers that have the potential to meet the need of an organization. But the suppliers are not the same in many respects. For example: one supplier may deliver 414 , / Supplier Selection on time but the items are costly. A supplier requires longer time to deliver but the items are cheaper than those of a supplier
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