Mercurial > hg > smallbox

annotate DL/Majorization Minimization DL/softthreshold.m @ 166:1495bdfa13e9 danieleb

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Updated grassmanian function (restored old computation of the dictionary) and added functions to the audio class
author Daniele Barchiesi <daniele.barchiesi@eecs.qmul.ac.uk>
date Mon, 19 Sep 2011 14:53:23 +0100
parents b14209313ba4
children
rev   line source
ivan@155 1 % Soft threshold operator for matrices
ivan@155 2 % [Y] = softthreshold(X,theta)
ivan@155 3 % X : input matrix
ivan@155 4 % theta : thresholding parameter
ivan@155 5 function [Y] = softthreshold(X,theta)
ivan@155 6 Y = X - min(theta,abs(X)).*sign(X);