Regularization Tools a Matlab Package for Analysis and Solution of Discrete Ill-posed Problems Contents Changes since Version 2.0 3 1 Introduction 5 2 Discrete Ill-posed Problems and Their Regularization 7 Changes since Version 2.0
نویسنده
چکیده
The following is a list of the major changes since Version 2.0 of the package. Replaced gsvd by cgsvd which has a diierent sequence of output arguments. Removed the obsolete function csdecomp (which replaced the function csd) Deleted the function mgs. Changed the storage format of bidiagonal matrices to sparse, instead of a dense matrix with two columns. Removed the obsolete function bsvd. Added the function regutm that generates random test matrices for regularization methods. Added the blur test problem. Functions tsvd and tgsvd now allow k = 0, and functions tgsvd and tikhonov now allow a square L. Added a priori guess x 0 as input to tikhonov. Corrected get l such that the sign of L*x is correct. Added MGS reorthogonalization of the normal equation residual vectors in the two functions cgls and pcgls. Added the method 'ttls' to the function l fac. More precise computation of the regularization parameter in gcv, lcurve, and qua-siopt. Changed heb new and newton to work with instead of 2. Added legend to lagrange and picard.
منابع مشابه
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