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INFERENCE ON A SEMIPARAMETRIC MODEL WITH GLOBAL POWER LAW AND LOCAL NONPARAMETRIC TRENDS

Jiti Gao (), Oliver Linton and Bin Peng

Econometric Theory, 2020, vol. 36, issue 2, 223-249

Abstract: We consider a model with both a parametric global trend and a nonparametric local trend. This model may be of interest in a number of applications in economics, finance, ecology, and geology. We first propose two hypothesis tests to detect whether two nested special cases are appropriate. For the case where both null hypotheses are rejected, we propose an estimation method to capture certain aspects of the time trend. We establish consistency and some distribution theory in the presence of a large sample. Moreover, we examine the proposed hypothesis tests and estimation methods through both simulated and real data examples. Finally, we discuss some potential extensions and issues when modelling time effects.

Date: 2020
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Related works:
Working Paper: Inference on a semiparametric model with global power law and local nonparametric trends (2018) Downloads
Working Paper: Inference on a Semiparametric Model with Global Power Law and Local Nonparametric Trends (2017) Downloads
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