השוואת שיטות
סקרו את השיטות שבחרתם זו לצד זו; שורות שבהן יש הבדל מודגשות.
| Difference GMM רובוסטי (Robust Difference GMM)× | אומד GMM של ארלנו-בונד לפנל× | |
|---|---|---|
| תחום | אקונומטריקה | אקונומטריקה |
| משפחה | Regression model | Regression model |
| שנת המקור≠ | 1991 / 2005 | 1991 |
| הוגה השיטה≠ | Arellano & Bond (1991); robust inference extension via Windmeijer (2005) | Manuel Arellano and Stephen Bond |
| סוג≠ | GMM estimator with robust standard errors | Dynamic panel GMM estimator |
| מקור מכונן≠ | 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. DOI ↗ | 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. DOI ↗ |
| כינויים | robust Arellano-Bond estimator, difference GMM with robust SE, HAC difference GMM, AB-GMM robust | Arellano-Bond GMM, AB-GMM, difference GMM estimator, dynamic panel GMM |
| קשורות≠ | 6 | 5 |
| תקציר≠ | 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. | 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. |
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