Grouup decision making contractor selection based on SWOT in fuzzy environment

Currently competitive world outsourcing is one of the important strategies used by modern enterprises. Contractor selection is characterized as a multi-criteria decision-making problem that comprises tangible and intangible factors. Previous contractor selection techniques do not consider strategic perspective. This paper applied quantified SWOT in the context of contractor selection under a fuzzy environment, for the first time. In proposed strategic method, a semi-AHP with two hierarchies is established, main criteria for contractor selection are studied in first hierarchy, SWOT factors and their subfactors are investigated in second. In some levels of hierarchies Pairwise comparison is used. By using fuzzy logic and triangular fuzzy numbers, human vagueness in decision making is considered. Proposed method is a quantified strategic method which captures imprecise human thought. Moreover it is interesting for managers for its applied aspect SWOT analysis and is applicable for every enterprise with some changes. Key wordsContractor selection, Fuzzy logic, Semi-AHP, Quantified SWOT (Strengths, Weaknesses, Opportunities and Threats), Triangular fuzzy numbers.