An Application of Interval Valued Fuzzy Matrices in Medical Diagnosis

In this paper, we extend Sanchez’s approach for medical diagnosis using the representation of an interval valued fuzzy matrix as an interval matrix of two fuzzy matrices. We introduce arithmetic mean of an interval valued fuzzy matrix as the arithmetic mean of its lower and upper limit matrices and propose a method to study Sanchez’s approach of medical diagnosis through the arithmetic mean of an interval valued fuzzy matrix, which is a simpler technique than that of using intuitionistic fuzzy sets available in the literature.