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Geometric type-1 and type-2 fuzzy logic systems
Grey sets and greyness.
The Uncertainty Associated with a Type-2 Fuzzy Set
(Springer Verlag, 2009)
Type-2 fuzzy sets offer the opportunity to capture higher orders of uncertainty. However, researchers have not explored fully the nature of this uncertainty and how it can be quantified. In this paper we place type-2 ...
Uncertainty Representation of Grey Numbers and Grey Sets
In the literature there is a presumption that a grey set and an interval-valued fuzzy set are equivalent. This presumption ignores the existence of discrete components in a grey number. In this paper new measurements ...
Roughness bounds in rough set operations