Testing Neural Networks

Hi, I am new to Neural Networks.I have created a small AND logical gate using Neural Network in Matlab 7. I have trained the Network, but i don't know how to test my network,any help in this regard would be of great help. Thanks

Answer 1

[V Chauhan]

Hi. you can use GUI for training. Your input should be of form 2 X n. where each column is pair of 0 and 1. Your output should be 1 x n where each value is corresponding output related to each input column.Use GUI to train it and at the end save your file with some name and save results ( a button in GUI at the end). Now go to command prompt and create new variable with two rows and 1 column to test. For example testres=[0;1] and type on command prompt nnout=net(testres). Where nnout is your networks output for testres. It will give you output close to zero for AND gate. You can try different combinations with testres such as testres=[0 0 1 1; 1 1 1 1] and test network. It will give 4 outputs for 4 inputs. Last two will be near 1.

Answer 2

[Chirag Gupta]

use the

outputs = sim(net,testinputs)

where net is the trained neural net

[Ahmad Farhan]

how to display the result of the trained neural net in the edit text box?

[Walter Roberson]

set(Handle, 'string', cellstr(num2str(outputs)) )

[Kushan Ranga]

what is Handel?

[Greg Heath]

Before you ask a question like that, check the documentation

 help handle  %NOTE SPELLING

 doc handle

Hope this helps,

Greg

[Kushan Ranga]

i have designed the neural network and the gui.I tried this also.but it dosen't show anything.please help....

[Huy Le Van]

sorry

Chirag Gupta,

you work test training neuron by sim.

my opinion, You false.

Answer 3

[sw]

Does testinputs have to have the same number of rows as what net was traied with?

Otherwise, the following error results:

??? Error using ==> network.sim at 121 Input 1 size does not match net.inputs{1}.size.

[rakesh kumar]

train is done.but the problem is i don't know how to test the network which i have trained using only NN toolkit.I don't want to use any codes,want to do in NN toolkit.

[Chirag Gupta]

Whats the exact MATLAB version you are using? With MATLAB R2011a, you can use nnstart to get started, where you can train and test your networks!

Which tool are you using? nntrain or nntool? Typically after training the network you can export your network to the workspace and test it as shown above

Answer 4

[Justin]

Does anyone know if there is a way to use nnstart if you're using R2010a? I have MATLAB 7.10.0 and it seems that nnstart won't work and I'm having trouble building a time series network.

[Walter Roberson]

I suggest you create a new Question for this, Justin.