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view DL/Majorization Minimization DL/softthreshold.m @ 227:b50e2b6a9c37 luisf_dev

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Merge from the default branch
author luisf <luis.figueira@eecs.qmul.ac.uk>
date Thu, 12 Apr 2012 14:06:27 +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);