Mercurial > hg > smallbox

annotate DL/Majorization Minimization DL/softthreshold.m @ 161:f42aa8bcb82f ivand_dev

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debug and clean the SMALLbox Problems code
author Ivan Damnjanovic lnx <ivan.damnjanovic@eecs.qmul.ac.uk>
date Wed, 31 Aug 2011 12:02:19 +0100
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);