Quasi-random numbers for copula models
, 2016 The present work addresses the question how sampling algorithms for commonly applied copula models can be adapted to account for quasi-random numbers.
Cambou, Mathieu +2 more
core +1 more source
Spline approximations to conditional Archimedean copula [PDF]
Stat, 2014 We propose a flexible copula model to describe changes with a covariate in the dependence structure of (conditionally exchangeable) random variables. The starting point is a spline approximation to the generator of an Archimedean copula. Changes in the dependence structure with a covariate x are modelled by flexible regression of the spline ...
openaire +5 more sources
WORLD FINANCIAL RELATIONS: UNDERSTANDING THE CREDIT DERIVATIVE SWAPS (CDS) DEPENDENCE STRUCTURE
REAdThis study investigates the copula model that best fit to model the dependence structure of Credit Derivative Swaps (CDS) spreads. For the analysis, we consider daily data from the period of January 1, 2009 to December 31, 2014.
Fernanda Maria Müller +2 more
doaj +1 more source
Constructing and generalizing multivariate copulas: a generalizing approach [PDF]
, 2007 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
core
Performance evaluation for medical alliance in China based on a novel multi-attribute group decision-making technique with Archimedean copulas-based Hamy operators and extended best-worst method. [PDF]
Digit Health, 2023 Xing Y, Wang J.
europepmc +1 more source
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.
core +1 more source
Enjoy the Joy of Copulas: With a Package copula
Journal of Statistical Software, 2007 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
doaj
On bivariate Archimedean copulas with fractal support
Dependence ModelingDue to their simple analytic form (bivariate) Archimedean copulas are usually viewed as very smooth and handy objects, which should distribute mass in a fairly regular and certainly not in a pathological way. Building upon recently established results on
Sánchez Juan Fernández +1 more
doaj +1 more source
Nested Archimedean copulas: a new class of nonparametric tree structure estimators
, 2014 Any nested Archimedean copula is defined starting from a rooted phylogenetic tree, for which a new class of nonparametric estimators is presented. An estimator from this new class relies on a two-step procedure where first a binary tree is built and ...
Uyttendaele, Nathan
core
A test for Archimedeanity in bivariate copula models
Journal of Multivariate Analysis, 2012 18 pages, 2 ...
Axel Bücher +2 more
openaire +3 more sources