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| Нелинеен EGARCH модел× | Модел ARCH (Авторегресивен условен хетероскедастичност)× | |
|---|---|---|
| Област | Иконометрия | Иконометрия |
| Семейство | Regression model | Regression model |
| Година на възникване≠ | 1991 | 1982 |
| Създател≠ | Daniel B. Nelson | Robert F. Engle |
| Тип | Conditional volatility model | Conditional volatility model |
| Основополагащ източник≠ | Nelson, D. B. (1991). Conditional heteroskedasticity in asset returns: A new approach. Econometrica, 59(2), 347–370. DOI ↗ | Engle, R. F. (1982). Autoregressive conditional heteroscedasticity with estimates of the variance of United Kingdom inflation. Econometrica, 50(4), 987–1007. DOI ↗ |
| Други названия | NL-EGARCH, nonlinear exponential GARCH, asymmetric EGARCH, NEGARCH | ARCH, autoregressive conditional heteroskedasticity, Engle ARCH, conditional variance model |
| Свързани≠ | 5 | 6 |
| Резюме≠ | The Nonlinear EGARCH model extends Nelson's (1991) Exponential GARCH by allowing the news impact function to take a flexible nonlinear form, capturing asymmetric and nonlinear responses of conditional volatility to past shocks. It is widely used in financial econometrics to model leverage effects and complex volatility dynamics in asset returns. | The ARCH model, introduced by Robert Engle in 1982, captures time-varying volatility in financial and macroeconomic time series. It models the conditional variance of today's error as a function of past squared errors, explaining why volatile periods cluster together — a phenomenon known as volatility clustering. |
| ScholarGateНабор от данни ↗ |
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