Results 161 to 170 of about 583 (205)
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Insurance: Mathematics and Economics, 2005
The authors extend the theory of quasi-copulas to the bivariate discrete case and study various properties. A method of constructing quasi-copulas in the discrete case is also given. The method is illustrated by examples. A function \(C(x, y)\) is said to be a copula if it satisfies the conditions (a) \(C(0, x)= C(x, 0)= 0\) and \(C(1, x)= C(x, 1)= x\)
QUESADA MOLINA J. J., SEMPI, Carlo
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The authors extend the theory of quasi-copulas to the bivariate discrete case and study various properties. A method of constructing quasi-copulas in the discrete case is also given. The method is illustrated by examples. A function \(C(x, y)\) is said to be a copula if it satisfies the conditions (a) \(C(0, x)= C(x, 0)= 0\) and \(C(1, x)= C(x, 1)= x\)
QUESADA MOLINA J. J., SEMPI, Carlo
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New results on discrete copulas and quasi-copulas
Fuzzy Sets and Systems, 2021zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Fernández-Sánchez, Juan +2 more
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Multivariate Archimedean Quasi-Copulas
2002Abstract In this paper we define and study basic properties of multivariate Archimedean quasi-copulas. In particular, we examine properties concerning generators, diagonal sections, permutation symmetry, level sets and order.
Roger B. Nelsen +3 more
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Matrix representation of discrete quasi-copulas
Fuzzy Sets and Systems, 2008zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Aguiló, I., Suñer, J., Torrens, J.
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Bell-type inequalities for quasi-copulas
Fuzzy Sets and Systems, 2004zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Janssens, S., De Baets, B., De Meyer, H.
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Curvilinear patchwork constructions of (quasi-)copulas with given curvilinear sections
Fuzzy Sets and Systems, 2023zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Jiehua Xie +3 more
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A study of the mass distribution of quasi–copulas
Fuzzy Sets and Systems, 2023zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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OPPOSITE DIAGONAL SECTIONS OF QUASI-COPULAS AND COPULAS
International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems, 2009In this paper, we study opposite diagonal sections of quasi-copulas and copulas. The best-possible upper bound for the set of copulas with a given opposite diagonal section being known, we focus on the best-possible lower bound, which in general is a quasi-copula. Moreover, it exhibits an interesting type of bivariate symmetry called opposite symmetry.
De Baets, Bernard +2 more
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Quasi-copulas and copulas on a discrete scale
Soft Computing, 2005zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kolesárová, A., Mordelová, J.
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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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