Krahasoni metodat

	Estimator GMM Robustuesh i Arellano-Bond	Estimatori GMM i Panelit Arellano-Bond
Fusha	Ekonometri	Ekonometri
Familja	Regression model	Regression model
Viti i origjinës	1991	1991
Krijuesi	Arellano & Bond (1991); robust inference extensions by Windmeijer (2005)	Manuel Arellano and Stephen Bond
Lloji	Dynamic panel GMM estimator with robust inference	Dynamic panel GMM estimator
Burimi themelues	Arellano, M., & Bond, S. (1991). Some tests of specification for panel data: Monte Carlo evidence and an application to employment equations. The Review of Economic Studies, 58(2), 277-297.	Arellano, M., & Bond, S. (1991). Some tests of specification for panel data: Monte Carlo evidence and an application to employment equations. Review of Economic Studies, 58(2), 277–297.
Emërtime të tjera	Robust Difference GMM, AB-GMM with robust standard errors, Robust first-difference GMM, Arellano-Bond robust estimator	Arellano-Bond GMM, AB-GMM, difference GMM estimator, dynamic panel GMM
Të lidhura	6	5
Përmbledhja	The Robust Arellano-Bond GMM estimator applies the Arellano-Bond first-difference GMM approach to dynamic panel data while computing heteroscedasticity- and autocorrelation-consistent (robust) standard errors. This combination handles the Nickell bias from lagged dependent variables and simultaneously yields reliable inference when error variances differ across units or periods.	The Arellano-Bond GMM estimator addresses the two core problems of dynamic panel models — individual fixed effects correlated with the regressors, and the endogeneity introduced by a lagged dependent variable — by first-differencing to remove fixed effects and then using lagged levels of the dependent variable as internal instruments.