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Does Matlab make an automatic normalization for the input of a network?

Asked by Osama Tabbakh on 8 Aug 2019
Latest activity Commented on by Osama Tabbakh on 13 Aug 2019
Hello everyone,
I am using the function feedforwardnet for my problem. The values are in the inputs very small (7.14078e-09) and I am asking myself if Matlab makes automatic normalization for these values, or should I do it by oneself?
If Matlab does this automatically, could you please refer that, where I find it in the documentation.
Thank you in advance

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1 Answer

Answer by Sai Bhargav Avula on 12 Aug 2019
Edited by Sai Bhargav Avula on 12 Aug 2019
 Accepted Answer

Most of the neural network creation functions in the toolbox, like feedforwardnet, automatically assign processing functions to the network input and outputs. These are called process functions and can be overridden after the network.
For this case, the feedforwardnet has removeconstantrows and mapminmax as the processing functions. The mapminmax does normalize the input in the range [-1 1] for your data.
For more details refer the following link for input and output process functions.