Why I cannot see the Validation Curve in "Plotperform"?

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Mostafa Nakhaei
Mostafa Nakhaei on 31 Jan 2020
Commented: Tai Ikumi on 30 Jul 2020
I am training a fairly large network (100,000 observations and 17 variables, 3 regression outputs) using Matlab. The "plotperform" only shows the training and testing curves and It does not show the validation curve. Why is that? How can I include validation curve as well?
I included validation test in my program:
net.divideFcn = 'divideind';
net.divideParam.trainInd = 1:75000; % the first 75,000 observations is used for training.
net.divideParam.valInd = 75000+1:98000;
net.divideParam.testInd = 98001:100000;
net.performFcn = 'mse';
net.plotFcns = {'plotperform','plottrainstate','ploterrhist', ...
'plotregression', 'plotfit'};
[net,tr] = train(net,x,y);
My network includes 3 hidden layers with 30 units each.
  1 Comment
Tai Ikumi
Tai Ikumi on 30 Jul 2020
I am also interested in this issue. If you found the solution, please post it here.

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