Book ChapterDOI
Aggregation operators: properties, classes and construction methods
Tomasa Calvo,Anna Kolesárová,Magda Komorníková,Radko Mesiar +3 more
- pp 3-104
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In this article, the authors restrict their considerations regarding inputs as well as outputs to some fixed interval (scale) I = [a, b] ⊑ [-∞, ∞].Abstract:
Aggregation (fusion) of several input values into a single output value is an indispensable tool not only of mathematics or physics, but of majority of engineering, economical, social and other sciences. The problems of aggregation are very broad and heterogeneous, in general. Therefore we restrict ourselves in this contribution to the specific topic of the aggregation of finite number of real inputs only. Closely related topics of aggregating infinitely many real inputs [23,109,64,52,43,42,44,99], of aggregating inputs from some ordinal scales [41,50], of aggregating complex inputs (such as probability distributions [107,114], fuzzy sets [143]), etc., are treated, among others, in the quoted papers, and we will not deal with them. In this spirit, if the number of input values is fixed, say n, an aggregation operator is a real function of n variables. This is still a too general topic. Therefore we restrict our considerations regarding inputs as well as outputs to some fixed interval (scale) I = [a, b] ⊑ [-∞, ∞]. It is a matter of rescaling to fix I = [0,1].read more
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Book
Aggregation Functions: A Guide for Practitioners
TL;DR: A broad introduction into the topic of aggregation functions, and provides a concise account of the properties and the main classes of such functions, including classical means, medians, ordered weighted averaging functions, Choquet and Sugeno integrals, triangular norms, conorms and copulas, uninorms, nullnorms, and symmetric sums.
Journal ArticleDOI
Generalized Orthopair Fuzzy Sets
TL;DR: It is noted that as q increases the space of acceptable orthopairs increases and thus gives the user more freedom in expressing their belief about membership grade, and introduces a general class of sets called q-rung orthopair fuzzy sets in which the sum of the ${\rm{q}}$th power of the support against is bonded by one.
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A Historical Account of Types of Fuzzy Sets and Their Relationships
Humberto Bustince,Edurne Barrenechea,Miguel Pagola,Javier Fernández,Zeshui Xu,Benjamin Bedregal,Javier Montero,Hani Hagras,Francisco Herrera,Bernard De Baets +9 more
TL;DR: The definition and basic properties of the different types of fuzzy sets that have appeared up to now in the literature are reviewed and the relationships between them are analyzed.
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Prioritized aggregation operators
TL;DR: It is suggested that prioritization between criteria can be modeled by making the weights associated with a criteria dependent upon the satisfaction of the higher priority criteria.
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A Universal Integral as Common Frame for Choquet and Sugeno Integral
TL;DR: This work provides a concept of integrals generalizing both the Choquet and the Sugeno case, and introduces and investigates universal integrals, which can be defined on arbitrary measurable spaces and for arbitrary monotone measures.
References
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An Introduction to Copulas
TL;DR: This book discusses the fundamental properties of copulas and some of their primary applications, which include the study of dependence and measures of association, and the construction of families of bivariate distributions.