How to get validation and Test data of Neural network in MATLAB

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ghazale 2013-10-8

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评论： Jan 2019-1-21

Hi

I have a question. I have trained a neural network and for example I had 1000 Inputs, 70 are used for training. 15% for validation and 15 % for testing and now outputs are shown and the network is trained. I want to understand how an I extract the validation and test data in command window of MATLAB. For example if I have an input matrix 3*1000. and my out put matrix is 2*1000. so the validation matrix will be 3*150. How can I show this matrix and finally its related out put in command window of MATLAB ?

Thanks a lot

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Jan 2019-1-21

@Amine Bendali: Please post a comment to ask for clarifications. Flags are thought to inform admins aboud messages, which might collide with the terms of use, e.g. by spam or rudeness.

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Answer 1

Greg Heath 2013-10-8

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The input matrix contains train, val and test data. Similarly for the output data.

Indices are available in the training record tr

[ net tr Y E Xf Af ] = train(net,input,target,Xi,Ai).

Type, without a semicolon

tr = tr

for other useful information.

Hope this helps.

Thank you for formally accepting my answer

Greg

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ghazale 2013-10-8

Hi, thanks for response, but I trained my network with fitting tool, I mean nnstart and then fitting tool, this tool choose 15 of data as validation and 15 as test data, how can I extract them?

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Answer 2

ghazale 2013-10-8

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/89538-how-to-get-validation-and-test-data-of-neural-network-in-matlab#answer_99055

Hi, thanks for response, but I trained my network with fitting tool, I mean nnstart and then fitting tool, this tool choose 15 of data as validation and 15 as test data, how can I extract them?