• Media type: E-Article; Electronic Resource
  • Title: Large-scale Tikhonov regularization via reduction by orthogonal projection
  • Contributor: Lampe, Jörg [Author]; Reichel, Lothar [Author]; Voß, Heinrich [Author]
  • imprint: American Elsevier Publ., 2011-09-23
  • Language: English
  • ISSN: 0024-3795
  • Keywords: Least squares ; General-form Tikhonov regularization ; Ill-posedness ; Discrepancy principle
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  • Description: This paper presents a new approach to computing an approximate solution of Tikhonov-regularized large-scale ill-posed least-squares problems with a general regularization matrix. The iterative method applies a sequence of projections onto generalized Krylov subspaces. A suitable value of the regularization parameter is determined by the discrepancy principle.