rrgmrestbx

Algorithms for range restricted iterative methods for linear discrete ill-posed problems. Range restricted iterative methods based on the Arnoldi process are attractive for the solution of large nonsymmetric linear discrete ill-posed problems with error-contaminated data (right-hand side). Several derivations of this type of iterative methods are compared by the authors [Implementation of range restricted iterative methods for linear discrete ill-posed problems. Linear Algebra Appl (to appear)]. We describe MATLAB codes for the best of these implementations. MATLAB codes for range restricted iterative methods for symmetric linear discrete ill-posed problems are also presented. (netlib numeralgo na33)