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comparison util/classes/dictionaryMatrices/grassmannian.m @ 169:290cca7d3469 danieleb

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Added dictionary decorrelation functions and test script for ICASSP paper.
author Daniele Barchiesi <daniele.barchiesi@eecs.qmul.ac.uk>
date Thu, 29 Sep 2011 09:46:52 +0100
parents 1495bdfa13e9
children 68fb71aa5339
comparison
equal deleted inserted replaced
168:ff866a412be5 169:290cca7d3469
46 46
47 % A = normc(A); %normalise dictionary 47 % A = normc(A); %normalise dictionary
48 48
49 [V_gram Sigma_gram] = svd(G); %calculate svd decomposition of gramian 49 [V_gram Sigma_gram] = svd(G); %calculate svd decomposition of gramian
50 Sigma_new = sqrt(Sigma_gram(1:n,:)).*sign(Sigma); %calculate singular values of dictionary 50 Sigma_new = sqrt(Sigma_gram(1:n,:)).*sign(Sigma); %calculate singular values of dictionary
51 A = Uinit*Sigma_new*V_gram'; %update dictionary 51 A = Uinit*Sigma_new*V_gram'; %update dictionary
52
53 % param.step = 0.01;
54 % param.reg = 0.01;
55 % param.nIter = 20;
56 % A = rotatematrix(initA,A,'linesearchlie',param);
52 57
53 % %% Debug visualization function 58 % %% Debug visualization function
54 % function plotcart2d(A) 59 % function plotcart2d(A)
55 % compass(A(1,:),A(2,:)); 60 % compass(A(1,:),A(2,:));