Penalized Estimation Based Variable Selection for Semiparametric Regression Models with Endogenous Covariates

2014 ◽  
Vol 1079-1080 ◽  
pp. 843-846
Author(s):  
Pei Xin Zhao

In this paper, we study the variable selection problem for the parametric components of semiparametric regression models with endogenous variables. Based on the penalized empirical likelihood technology and the bias adjustment method, we propose a penalized empirical likelihood based variable selection procedure. Simulation studies show that the proposed variable selection procedure is workable, and the resulting estimator is consistent.

2018 ◽  
Vol 8 (2) ◽  
pp. 313-341
Author(s):  
Jiajie Chen ◽  
Anthony Hou ◽  
Thomas Y Hou

Abstract In Barber & Candès (2015, Ann. Statist., 43, 2055–2085), the authors introduced a new variable selection procedure called the knockoff filter to control the false discovery rate (FDR) and proved that this method achieves exact FDR control. Inspired by the work by Barber & Candès (2015, Ann. Statist., 43, 2055–2085), we propose a pseudo knockoff filter that inherits some advantages of the original knockoff filter and has more flexibility in constructing its knockoff matrix. Moreover, we perform a number of numerical experiments that seem to suggest that the pseudo knockoff filter with the half Lasso statistic has FDR control and offers more power than the original knockoff filter with the Lasso Path or the half Lasso statistic for the numerical examples that we consider in this paper. Although we cannot establish rigourous FDR control for the pseudo knockoff filter, we provide some partial analysis of the pseudo knockoff filter with the half Lasso statistic and establish a uniform false discovery proportion bound and an expectation inequality.


2007 ◽  
Vol 61 (12) ◽  
pp. 1398-1403 ◽  
Author(s):  
Daewon Lee ◽  
Hyeseon Lee ◽  
Chi-Hyuck Jun ◽  
Chang Hwan Chang

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