Linganisha mbinu
Pitia mbinu ulizochagua bega kwa bega; safu zinazotofautiana zinaangaziwa.
| GARCH (Robust DCC-GARCH) yenye uwezo wa kuendelea wa uhusiano wenye nguvu× | TGARCH Imara× | |
|---|---|---|
| Nyanja | Ekonometriki | Ekonometriki |
| Familia | Regression model | Regression model |
| Mwaka wa asili≠ | 2002–2021 | 1994–2000s |
| Mwanzilishi≠ | Engle (2002) for DCC; robust extensions by Pakel, Shephard, Sheppard, and Engle (2021) | Zakoian (1994) for TGARCH; robust extensions developed through quasi-maximum likelihood and M-estimation literature |
| Aina≠ | Multivariate volatility model with robust estimation | Volatility model with asymmetry and robust estimation |
| Chanzo asilia≠ | 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 ↗ | Zakoian, J.-M. (1994). Threshold heteroskedastic models. Journal of Economic Dynamics and Control, 18(5), 931–955. DOI ↗ |
| Majina mbadala | robust DCC-GARCH, robust dynamic conditional correlation, outlier-robust DCC, composite-likelihood DCC-GARCH | robust GJR-GARCH, robust threshold GARCH, heavy-tail TGARCH, outlier-robust TGARCH |
| Zinazohusiana | 6 | 6 |
| Muhtasari≠ | The Robust DCC-GARCH model extends Engle's (2002) Dynamic Conditional Correlation framework by replacing standard quasi-maximum likelihood estimation with outlier-resistant or composite-likelihood techniques. This preserves accurate time-varying correlation estimation even when financial return data contain extreme observations, heavy tails, or structural irregularities. | Robust TGARCH extends the Threshold GARCH model by replacing the conventional maximum likelihood objective with an estimator that is resistant to heavy-tailed innovations and outlying observations. It captures asymmetric volatility responses — where negative shocks amplify variance more than positive shocks — while remaining reliable when the return distribution deviates strongly from normality. |
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