Why isn't my network splitting between training and testing data?
5 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
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'})
0 commentaires
Réponse acceptée
Greg Heath
le 6 Jan 2018
DO NOT USE THE FUNCTIONS NEWRBE, NEWGRNN OR NEWPNN!!!
They do not have a reasonable amount of flexibility,
If you want a RADIAL BASIS FUNCTION NET for regression or classification, use NEWRB!!!
Even NEWRB has many more deficiencies than FITNET(regression) and PATTERNNET(classification), however, I have shown how it can be used without too much frustration.
It has been some time since I've used it. SO, you will have to search for my posts and tutorials in the NEWSGROUP and ANSWERS.
Search backwards in both NEWSGROUP and ANSWERS using
greg newrb
Hope this helps.
Thank you for formally accepting my answer
Greg
3 commentaires
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Deep Learning Toolbox dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!