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Machine Learning
book

Machine Learning

by Sergios Theodoridis
April 2015
Intermediate to advanced content levelIntermediate to advanced
1062 pages
40h 35m
English
Academic Press
Content preview from Machine Learning
Chapter 10

Sparsity-Aware Learning

Algorithms and Applications

Abstract

This chapter is the follow-up to the previous one concerning sparsity-aware learning. The emphasis now is on the algorithmic front. Greedy, iterative thresholding and convex optimization algorithms are presented and discussed, both for batch as well as online learning. Extensions of the 1 norm regularization are introduced, such as group sparse modeling, structured sparsity, total variation. The issue of analysis versus synthesis sparse modeling is presented together with the notion of co-sparsity. Finally, a case study of sparse modeling for time-frequency analysis in the context of Gabor frames is demonstrated.

Keywords

Sparsity-promoting algorithms

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Publisher Resources

ISBN: 9780128015223