Is it possible to change the percentages of data used for training, validation and testing from the data sample using NNTOOL in Neural Network Toolbox 6.0.3 (R2009b)?
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The GUI based tool (NNTOOL) randomly divides input vectors and target vectors into three sets as follows:
- 60% are used for training.
- 20% are used to validate that the network is generalizing and to stop training before overfitting.
- The last 20% are used as a completely independent test of network generalization.
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MathWorks Support Team
2012-9-10
You cannot change the percentages of data used for training, validation and testing from the data sample using NNTOOL.
In order to achieve this purpose, please use other graphical interface functions such as NFTOOL, NCTOOL, NPRTOOL etc. You can read more about them in the documentation at:
<http://www.mathworks.com/help/nnet/ref/nftool.html>
<http://www.mathworks.com/help/nnet/ref/nctool.html>
<http://www.mathworks.com/help/nnet/ref/nprtool.html>
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