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A pseudo-heuristic parameter selection rule for [formula omitted]-regularized minimization problems.

Authors :
Li, Chong-Jun
Zhong, Yi-Jun
Source :
Journal of Computational & Applied Mathematics. May2018, Vol. 333, p1-19. 19p.
Publication Year :
2018

Abstract

This paper considers the regularization parameter determination of l 1 -regularized minimization problem. We solve the l 1 -regularized problem using iterative reweighted least squares (IRLS) which involves solving a linear system whose coefficient matrix has the form α M + ( 1 − α ) N ( α ∈ ( 0 , 1 ) ). The aim of this paper is to find an efficient and computationally inexpensive algorithm to both choose the regularization parameter and solve the l 1 -regularized problem. In order to achieve this, we propose an IRLS algorithm with adaptive regularization parameter selection based on a heuristic parameter determination rule—de Boor’s parameter selection criterion. Compared with some of the state-of-the-art algorithms and parameter selection rules, the numerical experiments show the efficiency and robustness of the proposed method. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
03770427
Volume :
333
Database :
Academic Search Index
Journal :
Journal of Computational & Applied Mathematics
Publication Type :
Academic Journal
Accession number :
127137567
Full Text :
https://doi.org/10.1016/j.cam.2017.10.006