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Mathematics of Computation

Published by the American Mathematical Society since 1960 (published as Mathematical Tables and other Aids to Computation 1943-1959), Mathematics of Computation is devoted to research articles of the highest quality in computational mathematics.

ISSN 1088-6842 (online) ISSN 0025-5718 (print)

The 2020 MCQ for Mathematics of Computation is 1.78.

What is MCQ? The Mathematical Citation Quotient (MCQ) measures journal impact by looking at citations over a five-year period. Subscribers to MathSciNet may click through for more detailed information.

 

A time continuation based fast approximate algorithm for compressed sensing related optimization
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by Farzin Barekat and Stanley Osher PDF
Math. Comp. 84 (2015), 2791-2822 Request permission

Abstract:

In this paper we introduce a fast approximate algorithm to optimize an augmented version of the Basis Pursuit problem and subsequently find the solution to the compressed sensing problem. Our methodology is to first solve the Lagrangian dual formulation of the problem and then use the result to find an approximate solution to the primal problem. Although we emphasize that our algorithm finds an approximate solution, numerical experiments show that our algorithm perfectly recovers the solution when the solution is relatively sparse with respect to the number of measurements. In these scenarios, the recovery is extremely fast compared to other available methods. Numerical experiments also demonstrate that the algorithm exhibits a sharp phase transition in success rate of recovery of the solution to compressed sensing problems as sparsity of solution varies. The algorithm proposed here is parameter free (except a tolerance parameter due to numerical machine precision), and very easy to implement.
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Additional Information
  • Farzin Barekat
  • Affiliation: Mathematics Department, University of California at Los Angeles, Los Angeles, California 90095-1555
  • Email: fbarekat@math.ucla.edu
  • Stanley Osher
  • Affiliation: Mathematics Department, University of California at Los Angeles, Los Angeles, California 90095-1555
  • Email: sjo@math.ucla.edu
  • Received by editor(s): February 1, 2014
  • Published electronically: May 28, 2015
  • Additional Notes: This research was supported by DOE DE-FG02-05ER25710:005, ONR N00014-11-1-0749, and ONR N00014-11-1-7-11.
  • © Copyright 2015 American Mathematical Society
  • Journal: Math. Comp. 84 (2015), 2791-2822
  • MSC (2010): Primary 49M29, 65K10, 90C25; Secondary 49L99
  • DOI: https://doi.org/10.1090/mcom/2972
  • MathSciNet review: 3378848