Cannot split data for train, validation and test set in neural network

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Eason 2017-5-24

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https://ww2.mathworks.cn/matlabcentral/answers/341819-cannot-split-data-for-train-validation-and-test-set-in-neural-network

评论： Abel Babu 2017-5-31

Hello, I want to train a recurrent neural network but I only found one example from the document, and my problem is the training did not split the data set for training, validation and test set even I excuted the code for splitting as the following:

 %data conversion
 X = con2seq(X);
 T = num2cell(T);
 %configure RNN
 net = layrecnet(1:2,3:5);%3 hidden layer,2 time step
 [Xs,Xi,Ai,Ts] = preparets(net,X,T);% prepare input to get time series for training
%training, validation, test split
 net.divideParam.trainRatio = 70/100;
 net.divideParam.valRatio = 15/100;
 net.divideParam.testRatio = 15/100;
     net = train(net,Xs,Ts,Xi,Ai);% training the net
     view(net);
     Y = net(Xs,Xi,Ai);% get prediction
     perf = perform(net,Y,Ts);% show the performance

Please tell me where the problem is.

Thanks,

Eason

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Abel Babu 2017-5-31

Hi Eason,

The above method code is indeed the right way of splitting data. To get a perspective on the question, what make you think the network is not splitting the data?

Abel

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