The lasso for high dimensional regression with a possible change point.
The lasso for high dimensional regression with a possible change point.
复制标题
DOI:
10.1111/rssb.12108
复制
发表时间:
2016-01
期刊:
影响因子:
--
通讯作者:
Shin Y
中科院分区:
文献类型:
--
作者:
Lee S;Seo MH;Shin Y
We consider a high dimensional regression model with a possible change point due to a covariate threshold and develop the lasso estimator of regression coefficients as well as the threshold parameter. Our lasso estimator not only selects covariates but also selects a model between linear and threshold regression models. Under a sparsity assumption, we derive non‐asymptotic oracle inequalities for both the prediction risk and the ‐estimation loss for regression coefficients. Since the lasso estimator selects variables simultaneously, we show that oracle inequalities can be established without pretesting the existence of the threshold effect. Furthermore, we establish conditions under which the estimation error of the unknown threshold parameter can be bounded by a factor that is nearly even when the number of regressors can be much larger than the sample size n. We illustrate the usefulness of our proposed estimation method via Monte Carlo simulations and an application to real data.
登录
查看更多内容
影响因子:
4.5
作者:
Fan, JQ;Peng, H
通讯作者:
Peng, H
影响因子:
4.5
作者:
Bradic J;Fan J;Jiang J
通讯作者:
Jiang J
影响因子:
4.5
作者:
Meinshausen, Nicolai;Yu, Bin
通讯作者:
Yu, Bin
影响因子:
4.5
作者:
Belloni, Alexandre;Chernozhukov, Victor
通讯作者:
Chernozhukov, Victor
影响因子:
13.7
作者:
Card, David;Mas, Alexandre;Rothstein, Jesse
通讯作者:
Rothstein, Jesse