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Determination of linear components in additive models

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  • Rong Chen
  • Hua Liang
  • Jing Wang

Abstract

Additive models have been widely used in nonparametric regression, mainly due to their ability to avoid the problem of the ‘curse of dimensionality’. When some of the additive components are linear, the model can be further simplified and higher convergence rates can be achieved for the estimation of these linear components. In this paper, we propose a testing procedure for the determination of linear components in nonparametric additive models. We adopt the penalised spline approach for modelling the nonparametric functions, and the test is a sort of Chi-square test based on finite-order penalised spline estimators. The limiting behaviour of the test statistic is investigated. To obtain the critical values for finite sample problems, we use resampling techniques to establish a bootstrap test. The performance of the proposed tests is studied through simulation experiments and a real-data example.

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  • Rong Chen & Hua Liang & Jing Wang, 2011. "Determination of linear components in additive models," Journal of Nonparametric Statistics, Taylor & Francis Journals, vol. 23(2), pages 367-383.
    • Handle: RePEc:taf:gnstxx:v:23:y:2011:i:2:p:367-383
    DOI: 10.1080/10485252.2010.520713
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    References listed on IDEAS

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    Cited by:

    1. Miao Yang & Lan Xue & Lijian Yang, 2016. "Variable selection for additive model via cumulative ratios of empirical strengths total," Journal of Nonparametric Statistics, Taylor & Francis Journals, vol. 28(3), pages 595-616, September.

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