grega
Posts:
47
Registered:
10/29/07
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Function predict is very slow when applying NN model!?
Posted:
Oct 12, 2012 8:58 AM
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Hey
Has anyone experienced the same problem with predict function (system identification toolbox) when applying NN model (neural network toolbox); namely the predict.m is very slow?
I applied two models on predict function and measured the time:
1. m1 = ARX(TR,[6 6 1]); % abbreviated notation, it's actually MIMO system 2x14
tic,predict(m1,TE,1:30),toc takes <4s
2. NL = neuralnet(feedforwardnet( 3 ));
m2 = nlarx(TR,[4 4 1],NL); % abbreviated notation, it's actually MIMO system 2x14
tic,predict(m2,TE,1:30),toc takes 20 min!!
How can this be? Please any suggestion to work around the problem?
Tnx
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