Oracle GMM estimation for misspecified models via thresholding

Mihai Giurcanu and Brett Presnell

Communications in Statistics - Theory and Methods, 2019, vol. 48, issue 11, 2657-2686

Abstract: We propose a thresholding generalized method of moments (GMM) estimator for misspecified time series moment condition models. This estimator has the following oracle property: its asymptotic behavior is the same as of any efficient GMM estimator obtained under the a priori information that the true model were known. We propose data adaptive selection methods for thresholding parameter using multiple testing procedures. We determine the limiting null distributions of classical parameter tests and show the consistency of the corresponding block-bootstrap tests used in conjunction with thresholding GMM inference. We present the results of a simulation study for a misspecified instrumental variable regression model and for a vector autoregressive model with measurement error. We illustrate an application of the proposed methodology to data analysis of a real-world dataset.

Date: 2019
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DOI: 10.1080/03610926.2018.1472786

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