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, conditional quantiles are specified via hierarchical Archimedean copula. The parameters and structure of this copula are …
Persistent link: https://www.econbiz.de/10011309638
fundamental characteristic. We compare our empirical findings with a single Gaussian copula, a correlation-weighted average of … Gaussian copulas, the K-copula which directly addresses the nonstationarity of dependencies as a model parameter, and the … skewed Student's t-copula. The K-copula covers the empirical dependence structure on the local scale most adequately, whereas …
Persistent link: https://www.econbiz.de/10012842121
promising class of models are the hierarchical Archimedean copulae (HAC) that allow for non-exchangeable and non … for stock indices the copula parameter changes dynamically but the hierarchical structure is constant over time …
Persistent link: https://www.econbiz.de/10012966304
copula density. Our methodology extends the work of Wu, Wang, and Walker (2015) by introducing dependence from a covariate in …
Persistent link: https://www.econbiz.de/10012969727
This paper extends the analysis of bivariate seemingly unrelated (SUR) Tobit model by modeling its nonlinear dependence structure through copulas. The capability in coupling together the different marginal distributions allows the flexible modeling for the SUR Tobit. The ability in capturing...
Persistent link: https://www.econbiz.de/10013102787
promising class of models are the hierarchical Archimedean copulae (HAC) that allow for non-exchangeable and non … for stock indices the copula parameter changes dynam- ically but the hierarchical structure is constant over time …. Interestingly in our exchange rate example both structure and parameters vary dynamically. -- copula ; multivariate distribution …
Persistent link: https://www.econbiz.de/10003953027
the use of a copula. Thus, only univariate distribution functions are needed when estimating the individual equations … parallel for the individual equations. Thereafter, the individual posteriors are combined with the copula, so obtaining a joint …
Persistent link: https://www.econbiz.de/10012845267
-distance (MD) and maximum-likelihood (ML) estimators for bivariate parametric copulae. In particular, I consider Cramer …-von-Mises-, Kolmogorov-Smirnov- and L1-variants of the CvM-statistic based on the empirical copula process, Kendall's dependence function and … the copula, the sample size or the location of the parameter, maximum-likelihood yields smaller estimation biases at less …
Persistent link: https://www.econbiz.de/10012757942
Lévy subordinated hierarchical Archimedean copulas (LSHAC) are flexible models in high dimensional modeling. However, there is limited literature discussing their applications, largely due to the challenges in estimating their structures and their parameters. In this paper, we propose a...
Persistent link: https://www.econbiz.de/10012855989
financial theories. Its derived Gaussian copula ostensibly does away with the normality assumptions, only to retain the linear … (Pearson's) correlation measure implicit to said bivariate normal p.d.f. In financial modelling context, the Gaussian copula … which a derived copula density function quite naturally and parsimoniously captures a particular nonlinear dependency …
Persistent link: https://www.econbiz.de/10013009170