Showing 111 - 120 of 1,149
We propose a new class of observation driven time series models referred to as Generalized Autoregressive Score (GAS) models. The driving mechanism of the GAS model is the scaled score of the likelihood function. This approach provides a unified and consistent framework for introducing...
Persistent link: https://www.econbiz.de/10010325732
-RV model achieves the best forecast performance, which highlights the importance of asymmetry and upper tail dependence for … copulas do not improve the accuracy of volatility forecasts. …
Persistent link: https://www.econbiz.de/10010326314
Widespread agreement that poverty is a multifaceted phenomenon, encompassing deprivations along multiple dimensions, clashes with often vociferous disagreement about how best to measure these deprivations. Drawing on the recent literature, this short note proposes three methodological...
Persistent link: https://www.econbiz.de/10010331407
modelling is required. We propose here the use of Copulas to build flexible multivariate distributions, since they allow for a … rich dependence structure and more flexible marginal distributions that better fit the features of empirical data, such as …
Persistent link: https://www.econbiz.de/10010335245
how misspecification in the marginals may affect the estimation of the dependence function represented by the copula. We …
Persistent link: https://www.econbiz.de/10010335297
multivariate dependence structure of the vine copulas is time-varying, and we see that the share of copulas capable of modeling …We develop a multivariate statistical arbitrage strategy based on vine copulas - a highly flexible instrument for … linear and nonlinear multivariate dependence modeling. In an empirical application on the S&P 500, we find statistically and …
Persistent link: https://www.econbiz.de/10011557422
that the threshold variable is normally distributed and to capture the dependence between the error term and the threshold …
Persistent link: https://www.econbiz.de/10011853324
Public debates about the rise in top income shares often focus on the growing dispersion in earnings and the soaring pay for top executives and financial-sector employees. But can the change in the marginal distribution of earnings on its own explain the rise in top income shares? Are top...
Persistent link: https://www.econbiz.de/10011873526
dependence structure among risk factors can be summarised in terms of their cross-moments. This solves the other part of the …
Persistent link: https://www.econbiz.de/10009437795
[40]. Levy copulas allow us to separate the dependence structure from the behavior ofthe marginal components. We consider … dependence structure to multivariate optionpricing. We use the new concept of Levy copula introduced in the literature by Tankov … bivariate variance gamma and bivariate CGMYmodels. To model the dependence structure between underlying assets we use the …
Persistent link: https://www.econbiz.de/10009442040