TOPSIS METHOD FOR MULTI-CRITERIA DECISION MAKING IN FUZZY ENVIRONMENT

The TOPSIS (Technique for Order Performance by Similarity to Ideal Solution) method and its expansion were introduced five decades ago. During the recent years, the distinct techniques of multi-criteria decision-making (MCDM) have been used to develop decision makers to select better alternatives for various decision making problems. In this paper we represent the fuzzy set and TOPSIS according to the traditional decision theory with different algorithms. Using the algorithms ranking order of TOPSIS method, fuzzy TOPSIS method are calculated by closeness coefficients based on negative ideal solution (NIS) and proximity of positive ideal solution (PIS). Lastly, we present few applications of fuzzy TOPSIS method.