Generalized Spatial Two Stage Least Squares Estimation of Spatial Autoregressive Models with Autoregressive Disturbances in the Presence of Endogenous Regressors and Many Instruments

Econometrics

Fei Jin¹ 

[1] School of Economics, Shanghai University of Finance and Economics, Shanghai 200433, China; E-Mail:

关键词: spatial autoregressive;    spatial error;    2SLS;    endogenous regressor;    instrumental variable selection;   

DOI  :  10.3390/econometrics1010071

来源: mdpi

【 摘 要 】

This paper studies the generalized spatial two stage least squares (GS2SLS) estimation of spatial autoregressive models with autoregressive disturbances when there are endogenous regressors with many valid instruments. Using many instruments may improve the efficiency of estimators asymptotically, but the bias might be large in finite samples, making the inference inaccurate. We consider the case that the number of instruments K increases with, but at a rate slower than, the sample size, and derive the approximate mean square errors (MSE) that account for the trade-offs between the bias and variance, for both the GS2SLS estimator and a bias-corrected GS2SLS estimator. A criterion function for the optimal K selection can be based on the approximate MSEs. Monte Carlo experiments are provided to show the performance of our procedure of choosing K.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.