Results 51 to 60 of about 725,046 (113)
Constructing and generalizing multivariate copulas: a generalizing approach [PDF]
Recently, Liebscher (2006) introduced a general construction scheme of d-variate copulas which generalizes the Archimedean family. Similarly, Morillas (2005) proposed a method to obtain a variety of new copulas from a given d-copula.
Fischer, Matthias J., Köck, Christian
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Enjoy the Joy of Copulas: With a Package copula [PDF]
Copulas have become a popular tool in multivariate modeling successfully applied in many fields. A good open-source implementation of copulas is much needed for more practitioners to enjoy the joy of copulas.
Jun Yan
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Lower Tail Dependence for Archimedean Copulas: Characterizations and Pitfalls [PDF]
Tail dependence copulas provide a natural perspective from which one can study the dependence in the tail of a multivariate distribution.For Archimedean copulas with continuously differentiable generators, regular variation of the generator near the ...
Charpentier, A., Segers, J.J.J.
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Multivariate dependence modeling using copulas [PDF]
There exist necessary and sufficient conditions on the generating functions of the FGM family, in order to obtain various dependence properties. We present multivariate generalizations of this class studying symmetry and dependence concepts, measuring ...
Maddalena Manzi, Marta Cardin
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Quasi-concave copulas, asymmetry and transformations [PDF]
, 2007 summary:In this paper we consider a class of copulas, called quasi-concave; we compare them with other classes of copulas and we study conditions implying symmetry for them. Recently, a measure of asymmetry for copulas has been introduced and the maximum
Alvoni, Elisabetta, Papini, Pier Luigi
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Nested Archimedean Copulas Meet R: The nacopula Package [PDF]
The package nacopula provides procedures for constructing nested Archimedean copulas in any dimensions and with any kind of nesting structure, generating vectors of random variates from the constructed objects, computing function values and probabilities
Marius Hofert, Martin Maechler
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Convex Lineability in Copula and Quasi-copula Sets
Mediterranean Journal of MathematicsAbstract In this paper, we investigate several subsets of n-copulas and n-quasi-copulas from the perspective of convex-lineability and the recently introduced concept of convex-spaceability. Our purpose is to determine when such families contain extremely large algebraic structures, namely linearly independent sets of
Amo Artero, Enrique de +3 more
openaire +3 more sources
Convergence of Archimedean Copulas [PDF]
Convergence of a sequence of bivariate Archimedean copulas to another Archimedean copula or to the comonotone copula is shown to be equivalent with convergence of the corresponding sequence of Kendall distribution functions.No extra differentiability ...
Charpentier, A., Segers, J.J.J.
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THE APPLICATION OF COPULAS IN PRICING DEPENDENT CREDIT DERIVATIVES INSTRUMENTS [PDF]
The aim of this paper is to use copulas functions to capture the different structures of dependency when we deal with portfolios of dependent credit risks and a basket of credit derivatives.
Fathi Abid, Nader Naifar
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Gordon and Newell queueing networks and copulas [PDF]
In this paper we have found an analytical formula for a copula that connects the numbers Ni of customers in the nodes of a Gordon and Newell queueing network.
Ciuiu, Daniel
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