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The Convergence Properties for Regularized Landweber Method

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  • Caifang Wang

    (Shanghai Maritime University)

Abstract

Landweber scheme is a widely used method to get a stable solution of linear system. The iteration of the Landweber scheme is viewed as a solution of normal equation for a least-squares functional. However, in practice, regularized least-squares functional is considered so as to get a more suitable solution. In this paper, we consider a regularized optimization problem and study the regularized Landweber scheme. Using the eigenvalue decomposition and the result that two symmetric semi-positive definite matrices can be diagonalized simultaneously, we derive a presentation of the regularized Landweber scheme and then generate the convergence properties for the regularized Landweber iteration. Finally, we apply two-dimensional numerical examples to confirm the convergence conditions.

Suggested Citation

  • Caifang Wang, 2016. "The Convergence Properties for Regularized Landweber Method," Journal of Optimization Theory and Applications, Springer, vol. 171(1), pages 262-275, October.
    • Handle: RePEc:spr:joptap:v:171:y:2016:i:1:d:10.1007_s10957-016-0961-7
    DOI: 10.1007/s10957-016-0961-7
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