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Nonparametric specification testing via the trinity of tests

Gupta, A (2017) 'Nonparametric specification testing via the trinity of tests.' Journal of Econometrics. ISSN 0304-4076

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Abstract

Tests are developed for inference on a parameter vector whose dimension grows slowly with sample size. The statistics are based on the Lagrange Multiplier, Wald and (pseudo) Likelihood Ratio principles, admit standard normal asymptotic distributions under the null and are straightforward to compute. They are shown to be consistent and possessing non-trivial power against local alternatives. The settings considered include multiple linear regression, panel data models with fixed effects and spatial autoregressions. When a nonparametric regression function is estimated by series we use our statistics to propose specification tests, and in semiparametric adaptive estimation we provide a test for correct error distribution specification. These tests are nonparametric but handled in practice with parametric techniques. A Monte Carlo study suggests that our tests perform well in finite samples. Two empirical examples use them to test for correct shape of an electricity distribution cost function and linearity and equality of Engel curves.

Item Type: Article
Uncontrolled Keywords: Increasingly many parameters, central limit theorem, Lagrange Multiplier test, Wald test, Likelihood Ratio test, nonparametric specification testing, series estimation, adaptive estimation, spatial autoregression
Subjects: H Social Sciences > HB Economic Theory
Divisions: Faculty of Social Sciences > Economics, Department of
Depositing User: Elements
Date Deposited: 15 Jan 2019 14:33
Last Modified: 15 Jan 2019 14:35
URI: http://repository.essex.ac.uk/id/eprint/21581

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