Why isn't my network splitting between training and testing data?
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I'm using divideFcn = 'divideind' and splitting by index. This usually works but it doesn't here and I don't know why. Here's my code
% import training data
filename = 'train.txt';
delimiter = ' ';
headerlines = 0;
A = importdata(filename, delimiter, headerlines);
% split training data into inputs and targets
inputTraining = A(1:2:end)';
targetTraining = A(2:2:end)';
% import testing data
filename = 'test.txt';
delimiter = ' ';
headerlines = 0;
A = importdata(filename, delimiter, headerlines);
% split testing data
inputTesting = A(1:2:end)';
targetTesting = A(2:2:end)';
% initialize the NRBF network with 1-hidden layer as usual. Change the
% function from RBF to NRBF. And set the training function to gradient
% descent
squaredErrGoal = .01;
spread = .1;
input = [inputTraining inputTesting];
target = [targetTraining targetTesting];
net = newrbe(input,target,spread);
net.layers{1}.transferFcn = 'radbasn';
net.trainFcn = 'traingd';
net = init(net);
view(net);
numTraining = length(inputTraining);
numTesting = length(inputTesting);
net.divideFcn = 'divideind';
net.divideParam.trainInd = 1:numTraining;
net.divideParam.valInd = numTraining+1:numTesting;
[net,tr] = train(net,input,target);
plotperf(tr);
figure(); %to create a new figure for the plotfit.
plotfit(net,input,target); % how many inputs and outputs can it handle?
xlabel('input');
legend({'target','output'})
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