قارن الطرق
راجع الطرق التي اخترتها جنبًا إلى جنب؛ الصفوف المختلفة مميَّزة.
| Panel GARCH model× | نموذج EGARCH (نموذج التباين الشرطي المتغير الأسي)× | |
|---|---|---|
| المجال | الاقتصاد القياسي | الاقتصاد القياسي |
| العائلة | Regression model | Regression model |
| سنة النشأة≠ | 1986 (GARCH); panel extension 1990s–2000s | 1991 |
| صاحب الطريقة≠ | Bollerslev (1986); extended to panel settings in subsequent literature | Daniel B. Nelson |
| النوع≠ | Volatility model | Volatility / conditional variance model |
| المصدر التأسيسي≠ | Bollerslev, T. (1986). Generalized autoregressive conditional heteroskedasticity. Journal of Econometrics, 31(3), 307–327. DOI ↗ | Nelson, D. B. (1991). Conditional heteroskedasticity in asset returns: A new approach. Econometrica, 59(2), 347–370. DOI ↗ |
| الأسماء البديلة | panel GARCH, GARCH panel model, panel volatility model, panel conditional heteroscedasticity model | Exponential GARCH, EGARCH, Nelson EGARCH, log-GARCH |
| ذات صلة | 6 | 6 |
| الملخص≠ | The Panel GARCH model extends Bollerslev's (1986) Generalized Autoregressive Conditional Heteroscedasticity framework to panel data, allowing conditional variance to evolve over time for each cross-sectional unit. It simultaneously captures unit-level heterogeneity and time-varying volatility clustering, making it the standard tool for modelling risk and uncertainty in multi-entity financial and macroeconomic panels. | 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. |
| ScholarGateمجموعة البيانات ↗ |
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