CIRJE-F-573 "Time Series Nonparametric Regression Using Asymmetric Kernels with an Application to Estimation of Scalar Diffusion Processes"
Author Name Gospodinov, Nikolay and Masayuki Hirukawa
Date June 2008
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Remarks @ Subsequently published as "Nonparametric Estimation of Scalar Diffusion Models of Interest Rates Using Asymmetric Kernels," Journal of Empirical Finance, Volume 19, Issue 4, September 2012, pp. 595-609.
Abstract

This paper considers a nonstandard kernel regression for strongly mixing processes when the regressor is nonnegative. The nonparametric regression is implemented using asymmetric kernels [Gamma (Chen, 2000b), Inverse Gaussian and Reciprocal Inverse Gaussian (Scaillet, 2004) kernels] that possess some appealing properties such as lack of boundary bias and adaptability in the amount of smoothing. The paper investigates the asymptotic and finite-sample properties of the asymmetric kernel Nadaraya-Watson, local linear, and re-weighted Nadaraya-Watson estimators. Pointwise weak consistency, rates of convergence and asymptotic normality are established for each of these estimators. As an important economic application of asymmetric kernel regression estimators, we reexamine the problem of estimating scalar diffusion processes.