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Abstract:
In this paper, a new estimation procedure based on composite quantile regression and functional principal component analysis (PCA) method is proposed for the partially functional linear regression models (PFLRMs). The proposed estimation method can simultaneously estimate both the parametric regression coefficients and functional coefficient components without specification of the error distributions. The proposed estimation method is shown to be more efficient empirically for non-normal random error, especially for Cauchy error, and almost as efficient for normal random errors. Furthermore, based on the proposed estimation procedure, we use the penalized composite quantile regression method to study variable selection for parametric part in the PFLRMs. Under certain regularity conditions, consistency, asymptotic normality, and Oracle property of the resulting estimators are derived. Simulation studies and a real data analysis are conducted to assess the finite sample performance of the proposed methods. (C) 2018 The Korean Statistical Society. Published by Elsevier B.V. All rights reserved.
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JOURNAL OF THE KOREAN STATISTICAL SOCIETY
ISSN: 1226-3192
Year: 2018
Issue: 4
Volume: 47
Page: 436-449
0 . 6 0 0
JCR@2022
ESI Discipline: MATHEMATICS;
ESI HC Threshold:63
JCR Journal Grade:4
Cited Count:
WoS CC Cited Count: 10
SCOPUS Cited Count: 11
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 2
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