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view DL/Majorization Minimization DL/softthreshold.m @ 216:a986ee86651e luisf_dev

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Calls SMALLboxInit in the beginning of both solve and learn, in order not to lose the SMALL_path variable.
author luisf <luis.figueira@eecs.qmul.ac.uk>
date Thu, 22 Mar 2012 11:41:04 +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);