Mercurial > hg > camir-aes2014
annotate toolboxes/RBM/lowest_fenergy.m @ 0:e9a9cd732c1e tip
first hg version after svn
| author | wolffd |
|---|---|
| date | Tue, 10 Feb 2015 15:05:51 +0000 |
| parents | |
| children |
| rev | line source |
|---|---|
| wolffd@0 | 1 function L = lowest_fenergy(V,W,visB,hidB,Classes) |
| wolffd@0 | 2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| wolffd@0 | 3 % Return the labels L(Classes) to the lowest energy softmax unit % |
| wolffd@0 | 4 % visP: hidden states % |
| wolffd@0 | 5 % visN: reconstructed data (with softmax) % |
| wolffd@0 | 6 % WW = [W visB hidB] % |
| wolffd@0 | 7 % F(v) = -\sum_i v_ia_i - \sum_jlog(1+e^(x_j)) % |
| wolffd@0 | 8 % -*-sontran2012-*- % |
| wolffd@0 | 9 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| wolffd@0 | 10 lNum = size(Classes,2); |
| wolffd@0 | 11 sNum = size(V,1); |
| wolffd@0 | 12 F = zeros(sNum,lNum); |
| wolffd@0 | 13 out = zeros(sNum,lNum); |
| wolffd@0 | 14 for i=1:lNum |
| wolffd@0 | 15 F(:,i) = 1; |
| wolffd@0 | 16 X = [V F]*W + repmat(hidB,sNum,1); |
| wolffd@0 | 17 out(:,i) = sum(repmat(visB,sNum,1).*[V F],2) + sum(log(1+exp(X)),2); |
| wolffd@0 | 18 F(:,i) = 0; |
| wolffd@0 | 19 end |
| wolffd@0 | 20 L = softmax2discrete(out,Classes); |
| wolffd@0 | 21 end |
| wolffd@0 | 22 |