How to train data in Neural Network

Hi all,

I am working on neural network to study cancer data, which has 680 record and labels. I just want to study the data and classify them to e classes. I've tried to write a code on matlab and I got result. But I don't know if it's correct or not.

So could you help me?

Thanks in advance.

close all, clear all, format compact 

[num]= xlsread('Cdata2.xlsx');
[r,c] = size(num);          
x = num(: ,1:c-1);
t = num(:,c);
inputs = x';
targets = t';

% Create a Pattern Recognition Network
hiddenLayerSize = 10;
net = patternnet(hiddenLayerSize);

% Set up Division of Data for Training, Validation, Testing
net.divideParam.trainRatio = 70/100;
net.divideParam.valRatio = 15/100;
net.divideParam.testRatio = 15/100;

% Train the Network
[net,tr] = train(net,inputs,targets);

% Test the Network
outputs = net(inputs);
errors = gsubtract(targets,outputs);
performance = perform(net,targets,outputs);

perf = mse(net,targets,outputs);

% View the Network
view(net)

figure, plotregression(targets,outputs)
% Uncomment these lines to enable various plots.
%figure, plotperform(tr)
%figure, plottrainstate(tr)
figure, plotconfusion(targets,outputs)
%figure, ploterrhist(errors)

[Nadiah Zainudin]

Can i ask what are the outputs for? What are you testing for?

Answer 1

[Greg Heath]

You need to

 1. Initialize the RNG before train so that you can duplicate your results

 2. Convert your output to percent error rates or correct classification rates for 
    the train/val/test subsets of each class.

 3. Search using

    greg patternnet

 for some examples.

Hope this helps.

Thank you for formally accepting my answer

Greg

P.S. If you try your code on one of the MATLAB classification examples, we can compare results

help nndatasets

[Turki]

About the first point: what is the benefit of using random number generation?

I didn't understand enough the second point. How can I classify the three sets correctly?!

Thank you

[Turki]

Hi Greg,

Can you help me please? I am new in this field and I'm really lost here.

Thanks

[Greg Heath]

Sorry I missed you in Nov. I usually search on the word "neural".

Any more questions?

Answer 2

[lyba waseem]

can someone help me???

i need help regarding neural network...

i am making a website that gives u prediction about which study line you choose after 12.. and i am using neural network soo if anyone of you can help me i'll be very thankful.

its urgent

Thanks in advance....