Results 91 to 100 of about 725,046 (113)
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Some results on a transformation of copulas and quasi-copulas
Information Sciences, 2014zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Manuel Ubeda Flores
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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.
Bernard De Baets +2 more
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Quasi-Copulas on Discrete Scales
2006In the paper the structure of quasi-copulas on discrete scales is studied. A special attention is given to the study of quasi-copulas with diagonal section. The cardinality of the set of quasi-copulas on L (n) determined univocally by the corresponding diagonal section is shown to be the Fibonacci number p n.
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Some results on the convergence of (quasi-) copulas
Fuzzy Sets and Systems, 2012zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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On the degree of asymmetry of a quasi-copula with respect to a curve
Fuzzy Sets and Systems, 2019zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bernard De Baets +2 more
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2002
Abstract We review the notion of a quasi-copula and using quasi-copulas we induce in [0,1] some large families of metrics which show to have some interesting probabilistic interpretations.
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Abstract We review the notion of a quasi-copula and using quasi-copulas we induce in [0,1] some large families of metrics which show to have some interesting probabilistic interpretations.
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Transformations of Copulas and Quasi-Copulas
2004Transformations of aggregation operators preserving the class of copulas and quasi-copulas, respectively, are shown to be concave automorphisms of the unit interval. Attractors of copulas are discussed, special attention being paid to power transformations and the relationship between the corresponding attractors and the so-called maximum attractor ...
Erich Peter Klement +2 more
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Bivariate quasi-copulas and doubly stochastic signed measures
Fuzzy Sets and Systems, 2011zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Manuel Ubeda Flores +2 more
exaly +3 more sources
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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ON THE CLASSES OF COPULAS AND QUASI-COPULAS WITH A GIVEN DIAGONAL SECTION
International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems, 2011Let [Formula: see text] and [Formula: see text] be, respectively, the classes of all copulas and quasi-copulas whose diagonal section is δ. We determine under which conditions on δ we have: (a) both [Formula: see text] and [Formula: see text] consist of a singleton; (b) [Formula: see text]. Moreover, a simple construction of copulas with a given convex
Fabrizio Durante +1 more
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