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PEIP (version 1.7)

l_curve_tikh_svd: L-curve Tikhonov

Description

L-curve for Tikhonov regularization

Usage

l_curve_tikh_svd(U, s, d, npoints, varargin = NULL)

Arguments

U
matrix of data space basis vectors from the svd
s
vector of singular values
d
the data vector
npoints
the number of logarithmically spaced regularization parameters
varargin
alpha_min, alpha_max: if specified, constrain the logrithmically spaced regularization parameter range, otherwise an attempt is made to estimate them from the range of singular values

Value

  • etathe solution norm ||m|| or seminorm ||Lm||
  • rhothe residual norm ||G m - d||
  • reg_paramcorresponding regularization parameters

Details

Calculates the L-curve