AHP based on Triangular Intuitionistic Fuzzy Number and its Application to Supplier Selection Problem

Analytic Hierarchy process (AHP) is an effective approach for dealing with Multi Criteria Decision Problem (MCDM). This paper investigates AHP in Intuitionistic Fuzzy environment. Here comparative judgments are taken in the form of Triangular Intuitionistic fuzzy number (TIFN). The elements of the comparison matrices are transformed into Interval valued Intuitionistic Fuzzy number by using Nearest Weighted Intuitionistic Interval Approximation (NWIIA) which is introduced in this paper. Then, the transformed matrix is changed in to a crisp matrix by using score function. Priority values are calculated by Arithmetic mean method. This process is applied to the supplier selection problem from the paper in the literature with the same data. It is found that this method yields the same result as that of the paper more easily. (C) 2019 Elsevier Ltd. All rights reserved.