MATLAB: Where to change values in nftool

neural network

I'm using nftool in matlab 7.9 version…. please can someone tell me where to change these values…. i got the output using default values… but i dint know where to change these values….. is it in the create_fit_net function generated while using nftool….. what should i do to make these cahnges….. please do reply….

1. Number of input neurons: 6

2. Number of hidden layers: 1

3. Hidden neurons: 12

4. Output neurons: 1

5. Learning rate: 1

6. Activation function is sigmoidal with values between [0,1]

7. All weights randomly initialized

8. Training phase: back propagation (BP)

9. Test training conditions: (a) epochs: 2000. (b) mean squared error (MSE): 0.001.

Best Answer

You can find all this information in the documentation. Here is the doc for the version of MATLAB you are using:

http://www.mathworks.com/help/releases/R2009b/toolbox/nnet/getting4.html#33722

Related Solutions

MATLAB: Neural Network tool nftool

Not enough information.

 1. Your spelling of outputs is inconsistent
 2. [ I N ] = size(inputs) =?   
 3  [ O N ] = size(outputs) = ?
 4. MSE00 = mean(var(outputs'),1) = ?   % Reference MSE 
 5. Ntrn = N - 2*(0.15*N)   % Default No. of training examples 
 6. Ntrneq = Ntrn*O         % No. of training equations
 7. H = 10 % default No. of hidden nodes
 8. Nw = (I+1)*H+(H+1)*O % No. of unknown weights to be estimated from Ntrneq
 9. In order to avoid a poor set of initial random weights, obtain Ntrials = 10 
separate designs by looping over i = 1:Ntrials
 10. Pick the best design with the lowest normalized VALIDATION MSE
     NMSEval = tr.best_vperf/MSE00   % Desire 0 < NMSEval << 1

Hope this helps.

Thank you for formally accepting my answer

Greg

P.S. Search on greg i=1:Ntrials

MATLAB: Fixunknows on nftool GUI matlab

I don't know for sure. However, I see no reason why you should not assume that functions called from command line and GUI use the same defaults for both.