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A new variable selection approach for varying coefficient models

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  • Xue-Jun Ma
  • Jing-Xiao Zhang

Abstract

The varying coefficient models are very important tools to explore the hidden structure between the response variable and its predictors. However, variable selection and identification of varying coefficients of the models are poorly understood. In this paper, we develop a novel method to overcome these difficulties using local polynomial smoothing and the SCAD penalty. Under some regularity conditions, we show that the proposed procedure is consistent in separating the varying coefficients from the constant ones. The resulting estimator can be as efficient as the oracle. Simulation results confirm our theories. Finally, we study the Boston housing data using the proposed method. Copyright Springer-Verlag Berlin Heidelberg 2016

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  • Xue-Jun Ma & Jing-Xiao Zhang, 2016. "A new variable selection approach for varying coefficient models," Metrika: International Journal for Theoretical and Applied Statistics, Springer, vol. 79(1), pages 59-72, January.
    • Handle: RePEc:spr:metrik:v:79:y:2016:i:1:p:59-72
    DOI: 10.1007/s00184-015-0543-y
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    Cited by:

    1. Xuejun Ma & Yue Du & Jingli Wang, 2022. "Model detection and variable selection for mode varying coefficient model," Statistical Methods & Applications, Springer;Società Italiana di Statistica, vol. 31(2), pages 321-341, June.
    2. Mingqiu Wang & Peixin Zhao & Xiaoning Kang, 2020. "Structure identification for varying coefficient models with measurement errors based on kernel smoothing," Statistical Papers, Springer, vol. 61(5), pages 1841-1857, October.

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