Σύγκριση μεθόδων

	Διανυσματική Αυτοπαλινδρόμηση Πάνελ (Panel VAR)	Ποσοστιαία VAR (Quantile VAR)	Διανυσματική Αυτοπαλίνδρομη Ανάλυση Δομής (SVAR)
Πεδίο	Οικονομετρία	Οικονομετρία	Οικονομετρία
Οικογένεια	Regression model	Regression model	Regression model
Έτος προέλευσης	1988	2006	1980
Δημιουργός	Holtz-Eakin, Newey & Rosen	Koenker and Xiao	Sims (1980); identification schemes by Blanchard & Quah (1989)
Τύπος	Panel vector autoregression	Distribution impulse response	Multivariate time series model
Θεμελιώδης πηγή	Holtz-Eakin, D., Newey, W. & Rosen, H. S. (1988). Estimating Vector Autoregressions with Panel Data. Econometrica, 56(6), 1371-1395.	Koenker, R., & Xiao, Z. (2006). Quantile autoregression. Journal of the American Statistical Association, 101(475), 980-990.	Blanchard, O. J., & Quah, D. (1989). The dynamic effects of aggregate demand and supply disturbances. American Economic Review, 79(4), 655-673.
Εναλλακτικές ονομασίες	PVAR, panel vector autoregression, Panel VAR (PVAR)	Quantile-based impulse response	SVAR, structural vector autoregression, identified VAR, structural VAR model
Συναφείς	3	3	5
Σύνοψη	Panel VAR extends the vector autoregression model to panel data, modelling the dynamic interactions among several variables while controlling for cross-unit heterogeneity through fixed effects. It was introduced by Holtz-Eakin, Newey and Rosen in 1988 and produces impulse-response functions and variance decompositions at the panel level.	Quantile VAR estimates impulse responses of multivariate systems conditional on different quantiles of the distribution, revealing how shocks propagate heterogeneously across the conditional distribution. Introduced by Koenker and Xiao (2006) and applied to risk measurement by White et al. (2015), it reveals tail behavior and contagion effects invisible to mean-based VAR analysis. This is essential for risk management and understanding how crises propagate differently than normal times.	Structural VAR extends the reduced-form VAR by imposing economic theory-based restrictions that identify orthogonal structural shocks. This allows researchers to disentangle the causal effects of distinct economic disturbances — such as supply versus demand shocks — and trace their dynamic propagation through a system of variables via impulse response functions and forecast error variance decompositions.