The use of Morozov's discrepancy principle for Tikhonov regularization for solving nonlinear ill-posed problems

In this paper we investigate Morozov's Discrepancy Principle for choosing the regularization parameter in Tikhonov regularization for solving nonlinear ill-posed problems. Convergence rates and a saturation property of the regularized solutions, where the regularization parameter is chosen by the discrepancy principle, are investigated. Numerical results are presented to verify the theoretical results.ZusammenfassungIn dieser Arbeit wird das Morozovsche Diskrepanz Prinzip betrachtet, welches bei der Tikhonov Regularisierung zur Lösung eines inkorrekt gestellten Problems zur Wahl des Regularisierungsparameters herangezogen wird. Untersucht werden Konvergenz, Konvergenzraten der regularisierten Lösungen, wenn der Regularisierungsparameter nach dem Morozovschen Diskrepanz Prinzip gewählt wird, und die Saturationseigenschaft dieses Diskrepanz Prinzips. Es werden einige numerische Beispiele zur Untermauerung der theoretischen Resultate präsentiert.

[1]  C. Kravaris,et al.  Identification of parameters in distributed parameter systems by regularization , 1983, The 22nd IEEE Conference on Decision and Control.

[2]  Heinz W. Engl,et al.  Weakly closed nonlinear operators and parameter identification in parabolic equations by tikhonov regularization , 1994 .

[3]  K. Kunisch,et al.  Stability for parameter estimation in two point boundary value problems. , 1986 .

[4]  Curtis R. Vogel,et al.  Well posedness and convergence of some regularisation methods for non-linear ill posed problems , 1989 .

[5]  H. Engl,et al.  Convergence rates for Tikhonov regularisation of non-linear ill-posed problems , 1989 .

[6]  C. W. Groetsch,et al.  The theory of Tikhonov regularization for Fredholm equations of the first kind , 1984 .

[7]  Andreas Neubauer,et al.  Tikhonov regularisation for non-linear ill-posed problems: optimal convergence rates and finite-dimensional approximation , 1989 .

[8]  Curtis R. Vogel,et al.  Well-posedness and Convergence of Some Regularization Methods for Nonlinear Ill-posed Problems 1 , 1989 .

[9]  Charles W. Groetsch,et al.  Comments on Morozov’s Discrepancy Principle , 1983 .

[10]  C. Atkinson METHODS FOR SOLVING INCORRECTLY POSED PROBLEMS , 1985 .

[11]  H. Engl,et al.  A posteriori parameter choice for general regularization methods for solving linear ill-posed problems , 1988 .

[12]  A. N. Tikhonov,et al.  Solutions of ill-posed problems , 1977 .

[13]  H. Engl,et al.  Optimal a posteriori parameter choice for Tikhonov regularization for solving nonlinear ill-posed problems , 1993 .

[14]  Otmar Scherzer,et al.  Convergence rates of iterated Tikhonov regularized solutions of nonlinear III — posed problems , 1993 .