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annotate DL/Majorization Minimization DL/softthreshold.m @ 212:1d134a1b6f95 luisf_dev

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Propagate the change from 'mailhe' to 'opt' in two_step_DL to the examples
author bmailhe
date Wed, 21 Mar 2012 18:13:02 +0000
parents b14209313ba4
children
rev   line source
ivan@155 1 % Soft threshold operator for matrices
ivan@155 2 % [Y] = softthreshold(X,theta)
ivan@155 3 % X : input matrix
ivan@155 4 % theta : thresholding parameter
ivan@155 5 function [Y] = softthreshold(X,theta)
ivan@155 6 Y = X - min(theta,abs(X)).*sign(X);