Quantile regression for robust estimation and variable selection in partially linear varying-coefficient models
Quantile regression for robust estimation and variable selection in partially linear varying-coefficient models
复制标题
部分线性变系数模型中稳健估计和变量选择的分位数回归
DOI:
10.1080/02331888.2017.1314482
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发表时间:
2017-04
期刊:
影响因子:
1.9
通讯作者:
Yang Hu
中科院分区:
文献类型:
--
作者:
Yang Jing;Lu Fang;Yang Hu
ABSTRACT In this paper, we develop a new estimation procedure based on quantile regression for semiparametric partially linear varying-coefficient models. The proposed estimation approach is empirically shown to be much more efficient than the popular least squares estimation method for non-normal error distributions, and almost not lose any efficiency for normal errors. Asymptotic normalities of the proposed estimators for both the parametric and nonparametric parts are established. To achieve sparsity when there exist irrelevant variables in the model, two variable selection procedures based on adaptive penalty are developed to select important parametric covariates as well as significant nonparametric functions. Moreover, both these two variable selection procedures are demonstrated to enjoy the oracle property under some regularity conditions. Some Monte Carlo simulations are conducted to assess the finite sample performance of the proposed estimators, and a real-data example is used to illustrate the application of the proposed methods.
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影响因子:
4.5
作者:
K. Knight
通讯作者:
K. Knight
DOI:
--
发表时间:
2011-07
期刊:
arXiv: Statistics Theory
影响因子:
--
作者:
N. Hjort;D. Pollard
通讯作者:
N. Hjort;D. Pollard
影响因子:
3.7
作者:
J. Jurečková
通讯作者:
J. Jurečková
DOI:
10.1080/01621459.1995.10476630
发表时间:
1995-12
影响因子:
3.7
作者:
D. Ruppert;S. Sheather;M. Wand
通讯作者:
D. Ruppert;S. Sheather;M. Wand
DOI:
10.1016/s0378-3758(03)00110-1
发表时间:
2004-03-01
影响因子:
0.9
作者:
Honda, T
通讯作者:
Honda, T