Browsing by Author "Jiawei, Li"

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    On Nie-Tan Operator and Type-reduction of Interval Type-2 Fuzzy Sets
    (IEEE, 2017-02-09) Jiawei, Li; John, Robert, 1955-; Coupland, Simon; Graham Kendall
    Type-reduction of type-2 fuzzy sets is considered to be a defuzzification bottleneck because of the computational complexity involved in the process of type-reduction. In this research, we prove that the closed-form Nie-Tan operator, which outputs the average of the upper and lower bounds of the footprint of uncertainty, is actually an accurate method for defuzzifing interval type-2 fuzzy sets.