Affiliations: Faculty of Information Technology, Vietnam National University of Agriculture, Trau Quy, Gia Lam, Ha Noi, Viet Nam
Correspondence:
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Corresponding author. Nguyen Xuan Thao, Faculty of Information Technology, Vietnam National University of Agriculture, Trau Quy, Gia Lam, Ha Noi, Viet Nam. E-mail: nxthao@vnua.edu.vn.
Abstract: In this paper, we propose a new correlation coefficient between intuitionistic fuzzy sets. We then use this new result to compute some examples through which we find that it benefits from such an outcome with some well-known results in the literature. As in statistics with real variables, we refer to variance and covariance between two intuitionistic fuzzy sets. Then, we determined the formula for calculating the correlation coefficient based on the variance and covariance of the intuitionistic fuzzy set, the value of this correlation coefficient is in [−1,1]. Then, we develop this direction to build correlation coefficients between the interval-valued intuitionistic fuzzy sets and apply it in the pattern recognition problem.
