Variable selection via quantile regression with the process of Ornstein-Uhlenbeck type
Variable selection via quantile regression with the process of Ornstein-Uhlenbeck type
复制标题
通过 Ornstein-Uhlenbeck 型过程的分位数回归进行变量选择
DOI:
10.1007/s11425-019-1723-4
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发表时间:
2021-09
期刊:
影响因子:
--
通讯作者:
Xinsheng Zhang
中科院分区:
文献类型:
--
作者:
Yinfeng Wang;Xinsheng Zhang
Based on the data-cutoff method, we study quantile regression in linear models, where the noise process is of Ornstein-Uhlenbeck type with possible jumps. In single-level quantile regression, we allow the noise process to be heteroscedastic, while in composite quantile regression, we require that the noise process be homoscedastic so that the slopes are invariant across quantiles. Similar to the independent noise case, the proposed quantile estimators are root-nconsistent and asymptotic normal. Furthermore, the adaptive least absolute shrinkage and selection operator (LASSO) is applied for the purpose of variable selection. As a result, the quantile estimators are consistent in variable selection, and the nonzero coefficient estimators enjoy the same asymptotic distribution as their counterparts under the true model. Extensive numerical simulations are conducted to evaluate the performance of the proposed approaches and foreign exchange rate data are analyzed for the illustration purpose.
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DOI:
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发表时间:
1999-11
期刊:
--
影响因子:
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作者:
Ken-iti Sato
通讯作者:
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1979
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Zeitschrift für Wahrscheinlichkeitstheorie und Verwandte Gebiete
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DOI:
10.1111/j.1467-9868.2007.00577.x
发表时间:
2007-02
期刊:
Journal of the Royal Statistical Society: Series B (Statistical Methodology)
影响因子:
--
作者:
Hansheng Wang;Guodong Li;Chih-Ling Tsai
通讯作者:
Hansheng Wang;Guodong Li;Chih-Ling Tsai