Focuss is a convex-concave procedure

We show the powerful sparse signal recovery approach FOCUSS is a convex-concave procedure. It follows a Newton-like decent direction by retaining the positive definite component of the Hessian matrix. This motivates an improved implementation of FOCUSS.

• Type: Journal
• Year: 2011
• Where: ICASSP
• Authors: Mashud Hyder, Kaushik Mahata
• Keywords: ICASSP 2011, Positive Definite Component, Powerful Sparse Signal, Recovery Approach Focuss, Signal Processing