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view 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
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% Soft threshold operator for matrices
% [Y] = softthreshold(X,theta)
% X : input matrix
% theta : thresholding parameter
function [Y] = softthreshold(X,theta)
Y = X - min(theta,abs(X)).*sign(X);