Порівняння методів
Переглядайте обрані методи поруч; рядки з відмінностями підсвічено.
| Модель EGARCH (Експоненційна GARCH)× | Модель DCC-GARCH (динамічна умовна кореляція)× | |
|---|---|---|
| Галузь | Економетрика | Економетрика |
| Родина | Regression model | Regression model |
| Рік появи≠ | 1991 | 2002 |
| Автор методу≠ | Daniel B. Nelson | Robert F. Engle |
| Тип≠ | Volatility / conditional variance model | Multivariate volatility model |
| Основоположне джерело≠ | Nelson, D. B. (1991). Conditional heteroskedasticity in asset returns: A new approach. Econometrica, 59(2), 347–370. DOI ↗ | Engle, R. F. (2002). Dynamic conditional correlation: A simple class of multivariate generalized autoregressive conditional heteroskedasticity models. Journal of Business and Economic Statistics, 20(3), 339-350. DOI ↗ |
| Інші назви | Exponential GARCH, EGARCH, Nelson EGARCH, log-GARCH | DCC-GARCH, Dynamic Conditional Correlation GARCH, Engle DCC model, multivariate DCC |
| Пов'язані≠ | 6 | 5 |
| Підсумок≠ | The Exponential GARCH (EGARCH) model, introduced by Nelson (1991), extends the standard GARCH framework by modelling the logarithm of conditional variance. This ensures variance is always positive without parameter constraints and, crucially, allows negative and positive shocks to have asymmetric effects on volatility — capturing the well-known leverage effect in financial markets. | The DCC-GARCH model, introduced by Engle (2002), extends univariate GARCH to capture time-varying correlations between multiple financial time series. It decomposes the multivariate conditional covariance matrix into individual volatility processes and a dynamic correlation matrix, allowing correlations to fluctuate over time while remaining computationally tractable even with many series. |
| ScholarGateНабір даних ↗ |
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