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题名:	Estimation of Conditional Moment Restrictions without Assuming Parameter Identifiability in the Implied Unconditional Moments
作者:	Hsu,Shih-Hsun;Kuan,Chung-Ming 徐士勛;管中閔
贡献者:	政大經濟系
关键词:	Conditional moment restrictions;Fourier coefficients;Generically comprehensive revealing function;Global identifiability;GMM
日期:	2011-11
上传时间:	2013-09-17 15:28:56 (UTC+8)
摘要:	A well-known difficulty in estimating conditional moment restrictions is that the parameters of interest need not be globally identified by the implied unconditional moments. In this paper, we propose an approach to constructing a continuum of unconditional moments that can ensure parameter identifiability. These unconditional moments depend on the “instruments” generated from a “generically comprehensively revealing” function, and they are further projected along the exponential Fourier series. The objective function is based on the resulting Fourier coefficients, from which an estimator can be easily computed. A novel feature of our method is that the full continuum of unconditional moments is incorporated into each Fourier coefficient. We show that, when the number of Fourier coefficients in the objective function grows at a proper rate, the proposed estimator is consistent and asymptotically normally distributed. An efficient estimator is also readily obtained via the conventional two-step GMM method. Our simulations confirm that the proposed estimator compares favorably with that of Domínguez and Lobato (2004, Econometrica) in terms of bias, standard error, and mean squared error.
關聯:	Journal of Econometrics, 165(1), 87-99
数据类型:	article
DOI 連結:	http://dx.doi.org/http://dx.doi.org/10.1016/j.jeconom.2011.05.008
DOI:	10.1016/j.jeconom.2011.05.008
显示于类别:	[經濟學系] 期刊論文

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