Elsevier

Fuzzy Sets and Systems

Volume 80, Issue 1, 27 May 1996, Pages 111-120
Fuzzy Sets and Systems

Uninorm aggregation operators

https://doi.org/10.1016/0165-0114(95)00133-6Get rights and content

Abstract

A generalization of the t-norm and t-conorm called the uni-norm is defined. These operators allow for an identity element lying anywhere in the unit interval rather than at one or zero as in the case of t-norms and t-conorms, respectively. Various important properties of these uni-norms are investigated. We next introduce two particular families of these uni-norms, R and R, study their behavior and suggest some semantics. Finally, withdrawing the requirement of associativity, we introduce a class of operators called RQ-star aggregation operators which are useful for aggregations guided by imperatives such as “if most of the scores are above the identity take the Max else use the Min”.

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