Cross-Products LASSO

Luengo García, David and Vía Rodríguez, Javier and Monzón García, Sandra and Trigano, Tom and Artés Rodríguez, Antonio (2013). Cross-Products LASSO. In: "38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP)", 26/05/2013 - 31/05/2013, Vancouver (Canadá). ISBN 978-1-4799-0356-6. pp. 6118-6122.

Description

Title: Cross-Products LASSO
Author/s:
  • Luengo García, David
  • Vía Rodríguez, Javier
  • Monzón García, Sandra
  • Trigano, Tom
  • Artés Rodríguez, Antonio
Item Type: Presentation at Congress or Conference (Article)
Event Title: 38th International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
Event Dates: 26/05/2013 - 31/05/2013
Event Location: Vancouver (Canadá)
Title of Book: Proceedings of the 2013 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013)
Date: 2013
ISBN: 978-1-4799-0356-6
Subjects:
Freetext Keywords: negative co-occurrence, sparsity-aware learning, LASSO, sparse coding
Faculty: E.U.I.T. Telecomunicación (UPM)
Department: Ingeniería de Circuitos y Sistemas [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Negative co-occurrence is a common phenomenon in many signal processing applications. In some cases the signals involved are sparse, and this information can be exploited to recover them. In this paper, we present a sparse learning approach that explicitly takes into account negative co-occurrence. This is achieved by adding a novel penalty term to the LASSO cost function based on the cross-products between the reconstruction coefficients. Although the resulting optimization problem is non-convex, we develop a new and efficient method for solving it based on successive convex approximations. Results on synthetic data, for both complete and overcomplete dictionaries, are provided to validate the proposed approach.

More information

Item ID: 33284
DC Identifier: http://oa.upm.es/33284/
OAI Identifier: oai:oa.upm.es:33284
Official URL: https://www2.securecms.com/ICASSP2013/default.asp
Deposited by: Memoria Investigacion
Deposited on: 15 Apr 2015 15:34
Last Modified: 15 Apr 2015 17:15
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