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| DCC-GARCH (Δυναμική Συσχέτιση υπό Συνθήκη)× | Μοντέλα Copula (Gaussian, t, Clayton, Gumbel, Frank)× | |
|---|---|---|
| Πεδίο | Χρηματοοικονομικά | Χρηματοοικονομικά |
| Οικογένεια | Regression model | Regression model |
| Έτος προέλευσης≠ | 2002 | 1959 |
| Δημιουργός≠ | Robert F. Engle | Sklar (1959); dependence-concept treatment by Joe (1997) |
| Τύπος≠ | Multivariate volatility model | Dependence model |
| Θεμελιώδης πηγή≠ | Engle, R. (2002). Dynamic Conditional Correlation: A Simple Class of Multivariate GARCH Models. Journal of Business & Economic Statistics, 20(3), 339-350. DOI ↗ | Sklar, A. (1959). Fonctions de répartition à n dimensions et leurs marges. Publications de l'Institut Statistique de l'Université de Paris, 8, 229-231. link ↗ |
| Εναλλακτικές ονομασίες | dynamic conditional correlation, Engle DCC, multivariate GARCH, DCC-GARCH — Dinamik Koşullu Korelasyon | copulas, dependence copulas, vine copulas, Kopula Modelleri (Gaussian, t, Clayton, Gumbel, Frank) |
| Συναφείς | 5 | 5 |
| Σύνοψη≠ | DCC-GARCH is Engle's (2002) multivariate volatility model that lets the correlations between several assets change over time. A separate univariate GARCH model is fitted to each series, and then the dynamic correlation matrix is estimated in a second, separate step. | Copula models are a family of functions that describe the dependence structure between variables separately from their individual (marginal) distributions. The foundation is Sklar's theorem (1959), which shows that any multivariate distribution can be split into its marginals plus a copula; Joe (1997) developed the modern catalogue of dependence concepts. They are central to portfolio risk and credit modelling. |
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