smith_eda asked . 2021-07-30

Why is my neural network overfitting?

inputs = tonndata(x,false,false);
targets = tonndata(t,false,false);

net = feedforwardnet([15,13],'trainbr');

net.trainParam.lr = 0.05; 
net.trainParam.mc = 0.9; 

net.inputs{1}.processFcns = {'removeconstantrows','mapminmax'};
net.outputs{2}.processFcns = {'removeconstantrows','mapminmax'};

net.divideFcn = 'dividerand';  

net.divideMode = 'time'; 
net.divideParam.trainRatio = 85/100;
net.divideParam.valRatio = 0/100;
net.divideParam.testRatio = 15/100;
net.layers{1}.transferFcn = 'logsig';
net.layers{2}.transferFcn = 'logsig';

net.performFcn = 'mse';

net = train(net,inputs,targets);
outputs = net(inputs);
errors = gsubtract(targets,outputs);
performance = perform(net,targets,outputs)

neural networks , bayesian regulariz...overfittingclassification