Mercurial > hg > smallbox

view DL/Majorization Minimization DL/softthreshold.m @ 207:233e75809e4a luisf_dev

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Accelerated the code for LGD and optimal grandient descent
author bmailhe
date Wed, 21 Mar 2012 14:12:25 +0000
parents b14209313ba4
children
line wrap: on
line source
% 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);