Penalty Functions Derived From Monotone Mappings

被引：18
作者：
Bayram, Ilker [1 ]
机构：
[1] Istanbul Tech Univ, Dept Elect & Commun Engn, Istanbul 34469, Turkey
来源：
IEEE SIGNAL PROCESSING LETTERS | 2015年 / 22卷 / 03期
关键词：
Hard threshold; monotone denoising operator; non-convex penalty; weakly convex; ALGORITHM;
D O I：
10.1109/LSP.2014.2357681
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We consider the problem of constructing a penalty function associated with a given monotone function. We provide a construction that allows the monotone function to be discontinuous or bounded. We show that, although the penalty may be nonconvex, it is weakly convex. We briefly discuss the implications for iterative solutions of linear inverse problems.
引用
收藏
页码：265 / 269
页数：5
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