Showing 1 - 10 of 12
This paper studies nonparametric estimation of conditional moment models in which the residual functions could be nonsmooth with respect to the unknown functions of endogenous variables. It is a problem of nonparametric nonlinear instrumental variables (IV) estimation, and a difficult nonlinear...
Persistent link: https://www.econbiz.de/10003739667
This paper computes the semiparametric efficiency bound for finite dimensional parameters identified by models of … (2003) for semiparametric conditional moment restriction models with identical information sets to the case of nested … semiparametric panel data models and semiparametric two stage plug-in problems. As an example, we compute the efficiency bound for a …
Persistent link: https://www.econbiz.de/10003899088
In this note, we characterize the semiparametric efficiency bound for a class of semi- parametric models in which the … involving the nuisance functions. We discover a surprising result that semiparametric two-step optimally weighted GMM estimators …
Persistent link: https://www.econbiz.de/10009667046
The primary concern of this article is the provision of definitions and tests for exogeneity appropriate for models defined through sets of conditional moment restrictions. These forms of exogeneity are expressed as additional conditional moment constraints and may be equivalently formulated as...
Persistent link: https://www.econbiz.de/10009628998
A two-step generalized method of moments estimation procedure can be made robust to heteroskedasticity and autocorrelation in the data by using a nonparametric estimator of the optimal weighting matrix. This paper addresses the issue of choosing the corresponding smoothing parameter (or...
Persistent link: https://www.econbiz.de/10010336485
Many structural economics models are semiparametric ones in which the unknown nuisance functions are identified via … we characterize the semiparametric efficiency bound for this class of models. We show that semiparametric two …
Persistent link: https://www.econbiz.de/10010365213
This paper shows how to construct locally robust semiparametric GMM estimators, meaning equivalently moment conditions …
Persistent link: https://www.econbiz.de/10011517194
This paper studies the properties of generalised empirical likelihood (GEL) methods for the estimation of and inference on partially identified parameters in models specified by unconditional moment inequality constraints. The central result is, as in moment equality condition models, a large...
Persistent link: https://www.econbiz.de/10011812336
We consider nonlinear moment restriction semiparametric models where both the dimension of the parameter vector and the …
Persistent link: https://www.econbiz.de/10011938037
Moment restriction semiparametric models, where both the dimension of parameter and the number of restrictions are …
Persistent link: https://www.econbiz.de/10011775182