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view DL/Majorization Minimization DL/softthreshold.m @ 191:8e0b28405fcb luisf_dev

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closing mistaken branch head.
author luisf <luis.figueira@eecs.qmul.ac.uk>
date Tue, 13 Mar 2012 17:34:10 +0000
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);