Title :
Focuss is a convex-concave procedure
Author :
Hyder, Md Mashud ; Mahata, Kaushik
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Univ. of Newcastle, Callaghan, NSW, Australia
Abstract :
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.
Keywords :
Hessian matrices; concave programming; convex programming; signal processing; FOCUSS; Hessian matrix; Newton-like decent direction; convex-concave procedure; sparse signal recovery approach; Equations; Image reconstruction; Iterative methods; Matching pursuit algorithms; Noise; Noise measurement; Signal processing algorithms; FOCUSS; convex-concave; sparse recovery;
Conference_Titel :
Acoustics, Speech and Signal Processing (ICASSP), 2011 IEEE International Conference on
Conference_Location :
Prague
Print_ISBN :
978-1-4577-0538-0
Electronic_ISBN :
1520-6149
DOI :
10.1109/ICASSP.2011.5947283
