DOI QR코드

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Variable Selection with Nonconcave Penalty Function on Reduced-Rank Regression

  • Received : 2014.08.30
  • Accepted : 2014.12.21
  • Published : 2015.01.31

Abstract

In this article, we propose nonconcave penalties on a reduced-rank regression model to select variables and estimate coefficients simultaneously. We apply HARD (hard thresholding) and SCAD (smoothly clipped absolute deviation) symmetric penalty functions with singularities at the origin, and bounded by a constant to reduce bias. In our simulation study and real data analysis, the new method is compared with an existing variable selection method using $L_1$ penalty that exhibits competitive performance in prediction and variable selection. Instead of using only one type of penalty function, we use two or three penalty functions simultaneously and take advantages of various types of penalty functions together to select relevant predictors and estimation to improve the overall performance of model fitting.

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Cited by

  1. Model selection algorithm in Gaussian process regression for computer experiments vol.24, pp.4, 2017, https://doi.org/10.5351/CSAM.2017.24.4.383
  2. Penalized rank regression estimator with the smoothly clipped absolute deviation function vol.24, pp.6, 2017, https://doi.org/10.29220/CSAM.2017.24.6.673