Semi-parametric Efficient Inference for Heteroscedastic Semivarying-coefficient Models

Xuemei Hu

Communications in Statistics - Theory and Methods, 2014, vol. 43, issue 18, 3927-3942

Abstract: Semivarying-coefficient models with heteroscedastic errors are frequently used in statistical modeling. When the error is conditional heteroskedastic, Ahmad, et al. (2005) proposed a general series method to obtain an efficient estimation. In this article we study the heteroscedastic semi-varying coefficient models with a nonparametric variance function, not only use the semi-parametric efficient normal approximation method to derive a family of semi-parametric efficient estimator, but also use the semi-parametric efficient empirical likelihood method to construct the efficient empirical likelihood confidence regions. The proposed estimators retain the double robustness feature of semi-parametric efficient estimator.

Date: 2014
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DOI: 10.1080/03610926.2013.837185

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