Title
Separation of linear and index covariates in partially linear single-index models
Abstract
Motivated to automatically partition predictors into a linear part and a nonlinear part in partially linear single-index models (PLSIM), we consider the estimation of a partially linear single-index model where the linear part and the nonlinear part involves the same set of covariates. We use two penalties to identify the nonzero components of the linear and index vectors, which automatically separates covariates into the linear and nonlinear part, and thus solves the difficult problem of model structure identification in PLSIM. We propose an estimation procedure and establish its asymptotic properties, which takes into account constraints that guarantee identifiability of the model. Both simulated and real data are used to illustrate the estimation procedure.
Year
DOI
Venue
2016
10.1016/j.jmva.2015.08.017
Journal of Multivariate Analysis
Keywords
DocType
Volume
primary,secondary
Journal
143
Issue
ISSN
Citations 
C
0047-259X
2
PageRank 
References 
Authors
0.48
1
2
Name
Order
Citations
PageRank
Heng Lian110627.59
Hua Liang2147.25