Results 31 to 40 of about 32,199 (223)
ARCHIMEDEAN COPULAS AND TEMPORAL DEPENDENCE [PDF]
Econometric Theory, 2012 We study the dependence properties of stationary Markov chains generated by Archimedean copulas. Under some simple regularity conditions, we show that regular variation of the Archimedean generator at zero and one implies geometric ergodicity of the associated Markov chain.
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Time Varying Hierarchical Archimedean Copulae [PDF]
SSRN Electronic Journal, 2010 There is increasing demand for models of time-varying and non-Gaussian dependencies for multivariate time-series. Available models suffer from the curse of dimensionality or restrictive assumptions on the parameters and the distribution. A promising class of models are the hierarchical Archimedean copulae (HAC) that allow for non-exchangeable and non ...
Wolfgang Karl Härdle +2 more
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Dependence Modeling, 2018 The family of Clayton copulas is one of the most widely used Archimedean copulas for dependency measurement. A major drawback of this copula is that when it accounts for negative dependence, the copula is nonstrict and its support is dependent on the ...
Cooray Kahadawala
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Extensions of Two Bivariate Strict Archimedean Copulas
Computational Journal of Mathematical and Statistical Sciences, 2023 The copula approach provides an option for capturing the structure of dependence between two quantitative variables. This approach is based on special bivariate functions called copulas.
Christophe Chesneau
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Stochastic Comparisons of Extreme Order Statistics in the Heterogeneous Exponentiated Scale Model [PDF]
Journal of Statistical Theory and Applications (JSTA), 2017 The effect of heterogeneity on order statistics has attracted much attention in recent decades. In this paper, first, we discuss stochastic comparisons of extreme order statistics from independent heterogeneous exponentiated scale samples.
Esmaeil Bashkar +2 more
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On an asymmetric extension of multivariate Archimedean copulas based on quadratic form
Dependence Modeling, 2016 An important topic in Quantitative Risk Management concerns the modeling of dependence among risk sources and in this regard Archimedean copulas appear to be very useful.
Di Bernardino Elena, Rullière Didier
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From Archimedean to Liouville copulas
Journal of Multivariate Analysis, 2010 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Alexander J. McNeil, Johanna Neslehová
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ESTIMASI NILAI VaR PORTOFOLIO MENGGUNAKAN FUNGSI ARCHIMEDEAN COPULA
E-Jurnal Matematika, 2017 Value at Risk explains the magnitude of the worst losses occurred in financial products investments with a certain level of confidence and time interval. The purpose of this study is to estimate the VaR of portfolio using Archimedean Copula family.
AULIA ATIKA PRAWIBTA SUHARTO +2 more
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On generators in Archimedean copulas
Sahand Communications in Mathematical Analysis, 2017 Summary: This study, after reviewing construction methods of generators in Archimedean copulas (AC), proposes several useful lemmas related with generators of AC. Then a new trigonometric Archimedean family will be shown which is based on cotangent function. The generated new family is able to model the low dependence structures.
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Densities of nested Archimedean copulas
Journal of Multivariate Analysis, 2013 Nested Archimedean copulas recently gained interest since they generalize the well-known class of Archimedean copulas to allow for partial asymmetry. Sampling algorithms and strategies have been well investigated for nested Archimedean copulas. However, for likelihood based inference it is important to have the density. The present work fills this gap.
Marius Hofert, David Pham
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