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consider a novel family of bivariate copulas, called exchangeable Marshall copulas. Such copulas describe both positive and … copulas are introduced, based on the estimation of their (univariate) generator. Moreover, the performance of the proposed …
Persistent link: https://www.econbiz.de/10010238359
and techniques such as copulas. …
Persistent link: https://www.econbiz.de/10012514881
I show that sharp identified sets in a large class of econometric models can be characterized by solving linear systems of equations. These linear systems determine whether, for a given value of a parameter of interest, there exists an admissible joint distribution of unobservables that can...
Persistent link: https://www.econbiz.de/10011994834
copulas, which allow us to model the effect of a covariate driving the strength of dependence between the main variables. We … propose a flexible Bayesian nonparametric approach for the estimation of conditional copulas, which can model any conditional …
Persistent link: https://www.econbiz.de/10012969727
Extreme-value copulas arise as the possible limits of copulas of component-wise maxima of independent, identically … distributed samples. The use of bivariate extreme-value copulas is greatly facilitated by their representation in terms of …
Persistent link: https://www.econbiz.de/10014068637
An elliptical copula model is a distribution function whose copula is that of an elliptical distribution. The tail dependence function in such a bivariate model has a parametric representation with two parameters: a tail parameter and a correlation parameter. The correlation parameter can be...
Persistent link: https://www.econbiz.de/10013159425
Measuring dependence in a multivariate time series is tantamount to modelling its dynamic structure in space and time. In the context of a multivariate normally distributed time series, the evolution of the covariance (or correlation) matrix over time describes this dynamic. A wide variety of...
Persistent link: https://www.econbiz.de/10003402279
models are characterized by nonparametric invariant distributions and parametric copula functions; where the copulas capture … copulas may look highly persistent and are useful for financial and economic applications. We first show that Markov processes … generated via Clayton, Gumbel and Student’s t copulas (with tail dependence) are all geometric ergodic. We then propose a sieve …
Persistent link: https://www.econbiz.de/10003817253
Measuring dependence in a multivariate time series is tantamount to modelling its dynamic structure in space and time. In the context of a multivariate normally distributed time series, the evolution of the covariance (or correlation) matrix over time describes this dynamic. A wide variety of...
Persistent link: https://www.econbiz.de/10012966239
We consider the problem of estimating the conditional quantile of a time series fYtg at time t given covariates Xt, where Xt can ei- ther exogenous variables or lagged variables of Yt . The conditional quantile is estimated by inverting a kernel estimate of the conditional distribution function,...
Persistent link: https://www.econbiz.de/10010238365