Results 101 to 110 of about 725,046 (113)
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2017
This article is a survey of quasi–copulas. The genesis, the history and the properties of quasi–copulas are presented, with special emphasis on their characterisation and on recent results. The presentation will also highlight the key part played by Roger Nelsen in all stages of the development of the theory.
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This article is a survey of quasi–copulas. The genesis, the history and the properties of quasi–copulas are presented, with special emphasis on their characterisation and on recent results. The presentation will also highlight the key part played by Roger Nelsen in all stages of the development of the theory.
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Some New Properties of Quasi-Copulas
2002Abstract The notion of a quasi-copula was introduced by Alsina et al. (1993) to characterize operations on distribution functions that can or cannot be derived from operations on random variables. Genest et al. (1999) characterize the quasi-copula concept in simpler operational terms.
Roger B. Nelsen +3 more
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Quasi-copulas with quadratic sections in one variable
Kybernetika, 2008An \(n\)-dimensional quasi-copula is a function \(Q\) from \([0,1]^n\) into \( [0,1]\) such that \(Q(x_1, \dots, x_n)= 0\) if one variable \(x_i = 0\), \(Q(x_ 1,\dots,x_n) = x_i\) if all variables \(x_k =1\) whenever \(k \neq i\), \(Q\) is non-decreasing in each variable and \(Q\) satisfies the Lipschitz inequality \(|Q(\vec u ) - Q ( \vec v) | \leq ...
José Antonio Rodríguez-Lallena +1 more
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A generalization of quasi-homogenous copulas
Fuzzy Sets and Systems, 2022Abd Al Karim Haj Ismail, Tarad Jwaid
exaly
A new family of trivariate proper quasi-copulas
Kybernetika, 2007Summary: We provide a new family of trivariate proper quasi-copulas. As an application, we show that \(W^3\) -- the best-possible lower bound for the set of trivariate quasi-copulas (and copulas) -- is the limit member of this family, showing how the mass of \(W^3\) is distributed on the plane \(x+y+z=2\) of \([0,1]^3\) in an easy manner, and providing
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On the α-migrativity of semicopulas, quasi-copulas, and copulas
Information Sciences, 2010Humberto Bustince +2 more
exaly
On a new construction of 1-Lipschitz aggregation functions, quasi-copulas and copulas
Fuzzy Sets and Systems, 2013Anna Kolesárová, Radko Mesiar
exaly
The unwalked path between quasi-copulas and copulas: Stepping stones in higher dimensions
International Journal of Approximate Reasoning, 2017Bernard de Baets +2 more
exaly