مقایسهٔ روش‌ها

	مدل مقاوم EGARCH	مدل GARCH مقاوم
حوزه	اقتصادسنجی	اقتصادسنجی
خانواده	Regression model	Regression model
سال پیدایش	2008	1986–2013
پدیدآور	Nelson (1991) for EGARCH; robust adaptation via Muler & Yohai (2008) and related authors	Boudt, Danielsson & Laurent (robust extensions); Bollerslev (standard GARCH, 1986)
نوع	Robust volatility model	Volatility model
منبع بنیادین	Muler, N., & Yohai, V. J. (2008). Robust estimates for GARCH models. Journal of Statistical Planning and Inference, 138(10), 2918–2940.	Boudt, K., Danielsson, J., & Laurent, S. (2013). Robust forecasting of dynamic conditional correlation GARCH models. International Journal of Forecasting, 29(2), 244–257.
نام‌های دیگر	Robust EGARCH model, outlier-robust EGARCH, robust exponential GARCH, REGARCH	Robust GARCH, outlier-robust GARCH, heavy-tail GARCH, contamination-robust volatility model
مرتبط	6	5
خلاصه	Robust EGARCH extends Nelson's (1991) Exponential GARCH model by replacing standard quasi-maximum likelihood estimation with outlier-resistant procedures — typically bounded-influence or M-estimation — so that a small fraction of extreme observations or data errors cannot distort the estimated volatility dynamics or the leverage effect.	The Robust GARCH model extends the classical GARCH framework to handle outliers and heavy-tailed innovations that commonly appear in financial return series. By down-weighting extreme observations through a robust innovation term, it produces more reliable volatility forecasts when data contain jumps, crises, or other anomalies that would otherwise distort standard GARCH estimates.