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A discrepancy principle for generalized local regularization of linear inverse problems
Journal article   Peer reviewed

A discrepancy principle for generalized local regularization of linear inverse problems

Cara D Brooks and Patricia K Lamm
Journal of inverse and ill-posed problems, Vol.22(1), pp.95-119
02-01-2014

Abstract

45Q05 65J22 65R32 discrepancy principle ill-posed Volterra equations Local regularization
A modified version of the classical discrepancy principle is formulated for use with generalized local regularization operators of the form for the approximate solution of linear inverse problems in Banach space with deterministically modeled noise. The choice of the local regularization parameter according to the parameter selection strategy is shown to result in a class of convergent regularization methods and a general rate of convergence is provided. As an example, the theory is applied to establish convergence and convergence rates for approximations obtained using a zeroth-order local regularization scheme with the modified principle for solving Volterra convolution equations in , . A numerical example is provided to illustrate the practical use and effectiveness of the method.

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