What´s wrong with my neural network´s training?

Question

Veronika 2015-3-18

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https://ww2.mathworks.cn/matlabcentral/answers/183860-what-s-wrong-with-my-neural-network-s-training

评论： Veronika 2015-3-27

Dear all,

I have this code for training neural network (type newff) and MATLAB is almost all day busy, but nothing happens (no training newff). Does anyone know, where is the mistake?

load ('trenovaci_modely2_stredni')
D = [stredni_tvar{1,:}];
F = [stredni_tvar{2,:}];
net_stredni_MLP = newff(D,F,20);
net.trainparam.epochs = 100;
net = train(net_stredni_MLP,D,F);
D = stredni_tvar{1,7};
J = sim(net_stredni_MLP,D);
save net_stredni_MLP
disp('Neuronová síť byla uložena')
Thank you for your answers.

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Answer 1

Greg Heath 2015-3-19

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https://ww2.mathworks.cn/matlabcentral/answers/183860-what-s-wrong-with-my-neural-network-s-training#answer_171916

在 MATLAB Online 中打开

 net2 = train(net1,...);
 Now there are 2 nets one trained and one untrained. Which do you think is untrained?
 *Thank you for formally accepting this answer*

Greg

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Veronika 2015-3-19

在 MATLAB Online 中打开

I tried this:

load ('trenovaci_modely2_stredni')
D = [stredni_tvar{1,:}];
F = [stredni_tvar{2,:}];
net_stredni_MLP = newff(D,F,20);
net_stredni_MLP.trainparam.epochs = 100;
net_stredni_MLP = train(net_stredni_MLP,D,F);
D = stredni_tvar{1,7};
J = sim(net_stredni_MLP,D);
save net_stredni_MLP
disp('Neuronová síť byla uložena')

And still nothing, only "busy" as usual...

Veronika 2015-3-23

在 MATLAB Online 中打开

Today I tried another pictures (figures) for training neural network.

This is the code:

   load ('trenovaci_modely4_nejmensi')
    D = [nejmensi_tvar{1,:}];
    F = [nejmensi_tvar{2,:}];
    net_nejmensi_MLP = newff(D,F,20);
    net_nejmensi_MLP.trainparam.epochs = 100;
    net_nejmensi_MLP = train(net_nejmensi_MLP,D,F);
    D = nejmensi_tvar{1,7};
    J = sim(net_nejmensi_MLP,D);
    save net_nejmensi_MLP
    disp('Neuronová síť byla uložena')
And Command Window returns this:
Out of memory. Type HELP MEMORY for your options.
Error in removeconstantrows>reverse (line 262)
    x = zeros(settings.xrows,q);
Error in nnproc.dperf (line 26)
        AA{j+1} = processFcn.reverse(AA{j},processFcn.settings);
Error in C:\Program Files\MATLAB\R2011b\toolbox\nnet\nnutils\+nnprop\jac_s.p>jac_s (line 105)
Error in staticderiv>calc_jacobian (line 222)
  jWB = nnprop.jac_s(net,data.P,data.Pd,data.Zb,data.Zi,data.Zl,...
Error in staticderiv (line 85)
        out1 = calc_jacobian(in2,in3,in4);
Error in defaultderiv>calc_jacobian (line 217)
    jWB = staticderiv('jacobian',net,data,fcns);
Error in nntraining.perfs_jejj>calc_Y_trainPerfJeJJ (line 87)
  Jwb_y = fcns.deriv.calc_jacobian(net,signals,fcns);
Error in nntraining.perfs_jejj>singlecalc (line 58)
  [Y,trainPerfy,trainN,JEy,JJy] = calc_Y_trainPerfJeJJ(net,data,fcns);
Error in nntraining.perfs_jejj (line 9)
    [trainPerfy,trainN,valPerfy,~,testPerfy,~,JEy,JJy] = singlecalc(net,data,fcns);
Error in trainlm>train_network (line 199)
  [perf,vperf,tperf,je,jj,gradient] = nntraining.perfs_jejj(net,data,fcns);
Error in trainlm (line 113)
  [net,tr] = train_network(net,tr,data,fcns,param);
Error in network/train (line 106)
[net,tr] = feval(net.trainFcn,net,X,T,Xi,Ai,EW,net.trainParam);
Error in nejmensi (line 110)
net_nejmensi_MLP = train(net_nejmensi_MLP,D,F;

Do you know, what does it mean? Thank you for answer.

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Answer 2

Greg Heath 2015-3-18

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https://ww2.mathworks.cn/matlabcentral/answers/183860-what-s-wrong-with-my-neural-network-s-training#answer_171841

在 MATLAB Online 中打开

I answered this in your previous post.

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Veronika 2015-3-19

nntoolMLP.mat

Here I attach variables D, F, J and trenovaci_modely2_stredni.

Greg Heath 2015-3-19

I think you better go back and reread what I wrote.

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Answer 3

Greg Heath 2015-3-26

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https://ww2.mathworks.cn/matlabcentral/answers/183860-what-s-wrong-with-my-neural-network-s-training#answer_172894

在 MATLAB Online 中打开

 load('nntoolMLP.mat')
whos
%   Name          Size         Bytes   Class   
% 
%   D                 1x1         1776  cell               
%   F                 1x1       616560  cell               
%   J                 1x1         2160  cell               
%   stredni_tvar  2x301        1184736  cell       
 d = cell2mat(D);
f = cell2mat(F);
j = cell2mat(J);
s = cell2mat(stredni_tvar);
whos
  Name               Size            Bytes    Class
  D                    1x1             1776    cell                
  F                    1x1           616560    cell                
  J                    1x1             2160    cell
  stredni_tvar         2x301        1184736    cell  
  d                  208x1             1664    double              
  f                  256x301         616448    double              
  j                  256x1             2048    double              
  s                  464x301        1117312    double

Your dimensions are not compatible.

Start by converting to doubles

Then fix the dimensions.

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Veronika 2015-3-27

在 MATLAB Online 中打开

Ok, when I do this:

load ('trenovaci_modely2_stredni')
s = cell2mat(stredni_tvar);
D = [stredni_tvar{1,:}];
F = [stredni_tvar{2,:}];
d = cell2mat(D);
f = cell2mat(F);
j = cell2mat(J);
net_stredni_MLP = newff(D,F,20);
net_stredni_MLP.trainparam.epochs = 100;
net_stredni_MLP = train(net_stredni_MLP,D,F);
D = stredni_tvar{1,7};
J = sim(net_stredni_MLP,D);
save net_stredni_MLP
disp('Neuronová síť byla uložena')

Command Window returns this:

Cell contents reference from a non-cell array object.
Error in cell2mat (line 43)
cellclass = class(c{1});
Error in stredni (line 110)
d = cell2mat(D);