Vertaile menetelmiä

	Rakenteellisen muutoksen EGARCH-malli	Autoregressiivisen ehdollisen heteroskedastisuuden (ARCH) malli
Tieteenala	Ekonometria	Ekonometria
Menetelmäperhe	Regression model	Regression model
Syntyvuosi	1990–1991	1982
Kehittäjä	Nelson (1991) for EGARCH; Lamoureux and Lastrapes (1990) for break-augmented GARCH variants	Robert F. Engle
Tyyppi	Volatility model with structural breaks	Conditional volatility model
Alkuperäislähde	Nelson, D. B. (1991). Conditional heteroskedasticity in asset returns: A new approach. Econometrica, 59(2), 347–370.	Engle, R. F. (1982). Autoregressive conditional heteroscedasticity with estimates of the variance of United Kingdom inflation. Econometrica, 50(4), 987–1007.
Rinnakkaisnimet	SB-EGARCH, EGARCH with regime shifts, break-adjusted EGARCH, structural change EGARCH	ARCH, autoregressive conditional heteroskedasticity, Engle ARCH, conditional variance model
Liittyvät	5	6
Tiivistelmä	Structural Break EGARCH combines Nelson's Exponential GARCH framework with explicit allowance for one or more structural breaks in the volatility process. By letting the intercept and persistence parameters of the log-variance equation shift at detected break dates, the model avoids the spurious long-memory and inflated persistence that standard EGARCH suffers when the data contain regime changes.	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.