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k-fold for nprtool

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yogini prabhu
yogini prabhu 2022-6-22
评论： yogini prabhu 2022-6-29
Apart from creating a NN and generating plots like confusion matrix ; how can one induce the k-fold CV method into the inputs data matrix for the NN;
specifically, for a 4-class classificaction problem with 10 samples inputs in each .
  1 个评论
yogini prabhu
yogini prabhu 2022-6-29
This does the job:-
cvFolds1 = crossvalind('Kfold',10, k); cvFolds2 = crossvalind('Kfold',10, k); cvFolds3 = crossvalind('Kfold',10, k); cvFolds4 = crossvalind('Kfold',10, k);
cvFolds=[cvFolds1;cvFolds2;cvFolds3;cvFolds4];
for i = 1:k
net = configure(net,input,target);
testIdx = (cvFolds == i);
trainIdx = ~testIdx;
trInd = find(trainIdx)
tstInd = find(testIdx)
net.trainParam.epochs = 100;
net.divideParam.trainInd = trInd
net.divideParam.testInd = tstInd

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