jens
7b34529b24
git-svn-id: http://moon:8086/svn/matlab/trunk@91 801c6759-fa7c-4059-a304-17956f83a07c
15 lines
388 B
Matlab
15 lines
388 B
Matlab
%% Your job is to implement the RICA cost and gradient
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function [cost,grad] = softICACost(theta, x, params)
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% unpack weight matrix
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W = reshape(theta, params.numFeatures, params.n);
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% project weights to norm ball (prevents degenerate bases)
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Wold = W;
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W = l2rowscaled(W, 1);
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%%% YOUR CODE HERE %%%
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% unproject gradient for minFunc
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grad = l2rowscaledg(Wold, W, Wgrad, 1);
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grad = grad(:); |