Compară metode

	GARCH Exponențial (EGARCH)	Modelul Markov cu comutare de regim (MS-AR / MS-VAR)
Domeniu	Econometrie	Econometrie
Familie	Regression model	Regression model
Anul apariției	1991	1989
Autorul original	Nelson	Hamilton (1989); Kim & Nelson (1999)
Tip	Conditional volatility model (asymmetric GARCH variant)	Regime-switching time series model
Sursa seminală	Nelson, D. B. (1991). Conditional Heteroskedasticity in Asset Returns: A New Approach. Econometrica, 59(2), 347-370.	Hamilton, J. D. (1989). A New Approach to the Economic Analysis of Nonstationary Time Series and the Business Cycle. Econometrica, 57(2), 357-384.
Denumiri alternative	exponential GARCH, Nelson's EGARCH, asymmetric GARCH, EGARCH — Üstel GARCH	regime-switching model, Markov-switching autoregression, MS-AR, MS-VAR
Înrudite	4	5
Rezumat	EGARCH is an asymmetric GARCH variant, introduced by Nelson in 1991, that models the leverage effect in which bad news raises volatility more than good news of the same size. It captures the negative-shock asymmetry of financial return series by modelling the logarithm of the conditional variance.	The Markov regime-switching model lets the parameters of a time series change probabilistically across hidden regimes governed by a Markov chain. Introduced by Hamilton (1989) and developed further by Kim and Nelson (1999), it automatically detects business-cycle phases such as expansions and contractions.