The Pawlak model of conflict analysis uses three-valued ratings (ie, positive, neutral, and
negative) of a set of agents on a set of issues. Several extensions to the Pawlak model …

The relations on agents and issues are essential topics in three-way conflict analysis. While
there is a general agreement on the formulation and understanding of relations regarding …

The model of three-way decision on two universes generalizes various two-universe models
of rough sets, and it is in fact defined on 0–1 tables, ie binary information tables. This paper …

Uncertainty measure is one of the most significant concepts and fundamental issues in
granular computing. Nowadays, there have been extensive studies on various uncertainty …

Three-way decision is widely applied with rough set theory to learn classification or decision
rules. The approaches dealing with complete information are well established in the …

The theory of three-way decision has contributed to data science in many topics, such as
three-way classification, three-way clustering, and three-way feature selection. Most three …

Interval-valued fuzzy sets are a generalization of classical fuzzy sets where the membership
values are intervals. The epistemic interpretation of interval-valued fuzzy sets assumes that …

Rough set models on two universes are important generalizations of Pawlak's classical
model. In most of the two-universe models, the upper and lower approximations are …

The present article proposes two construction ways to study the general forms of ordinal
sums of fuzzy implications with the intent of unifying the ordinal sums existing in the …

Intuitionistic fuzzy sets, introduced by Atanassov in the mid-1980′ s, represent a key
extension of Zadeh's fuzzy sets. Zadeh's extension principle, a fundamental concept in fuzzy …