Bandingkan kaedah

	GMM Perbezaan Robust	Estimator Perbezaan GMM (Estimator Arellano-Bond)
Bidang	Ekonometrik	Ekonometrik
Keluarga	Regression model	Regression model
Tahun asal	1991 / 2005	1991
Pengasas	Arellano & Bond (1991); robust inference extension via Windmeijer (2005)	Manuel Arellano and Stephen Bond
Jenis	GMM estimator with robust standard errors	GMM panel estimator
Sumber perintis	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.
Alias	robust Arellano-Bond estimator, difference GMM with robust SE, HAC difference GMM, AB-GMM robust	Arellano-Bond estimator, AB-GMM, first-difference GMM, difference GMM estimator
Berkaitan	6	5
Ringkasan	Robust Difference GMM applies the Arellano-Bond first-difference GMM estimator with heteroscedasticity- and autocorrelation-consistent (HAC) or Windmeijer-corrected standard errors, delivering valid inference for dynamic panel models even when error variances are non-constant or residuals are cross-sectionally correlated.	Difference GMM, introduced by Arellano and Bond (1991), estimates dynamic panel data models by first-differencing the equation to remove fixed effects, then using lagged levels of the endogenous variables as GMM instruments. It is the standard approach when a lagged dependent variable or other endogenous regressors are present in a panel with many units and few time periods.