Abstract
Intuitionistic fuzzy sets (IFSs) are widely applied to decision-support problems such as pattern recognition, multi-criteria decision-making, classification, and clustering analysis problems in an uncertain environment. Then, measures on IFS play an important role to determine either the relationship between objects or objects to standard ones. The main purpose of this paper is to investigate the distance measure of intuitionistic fuzzy sets (IFSs) based on the score function of intuitionistic fuzzy numbers and application in decision-support problems. The proposed measure has overcome some limitations of some existing measures. Next, the new measure is applied to solving pattern recognition, multi-criteria decision-making (MCDM) and classification problems. For the pattern recognition problem, a new index called degree of difference (DoD) is proposed. It is used to evaluate the measures when applied to the pattern recognition problem. The new index reflects confidence better than the degree of confidence (DoC) index when evaluating the application of measures to the pattern recognition problem. In this paper, numerical examples are given to analyze the effectiveness of the proposed measure.
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