Sparsity Within and Across Overlapping Groups


Bayram İ.

IEEE SIGNAL PROCESSING LETTERS, vol.25, no.2, 2018 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 25 Issue: 2
  • Publication Date: 2018
  • Doi Number: 10.1109/lsp.2017.2785183
  • Title of Journal : IEEE SIGNAL PROCESSING LETTERS

Abstract

Recently, penalty functions promoting signals that are sparse within and across groups have been proposed. In this letter, we propose a modified penalty function that offers additional flexibility in forming groups. We study the properties of the penalty function and propose a new algorithm that can be used in energy minimization formulations that employ it. We demonstrate the effects of using the penalty function on a simple linear inverse problem.