WHICH IS THE NARNET ACTIVATION FUNCTION IN THE HIDDEN LAYERS?

Hello, I would like to know which is the activation function used by Narnet?

I think the one used is the tansigmoid (y(i)=2/(1+exp(-2*y(i-1)))-1 ) and no the sigmoid (y(i)=(1/(1+exp(-0.9*y(i-1))))) as I thought but I would like to confirm that.

Thank you for your time.

Answer 1

[Asvin Kumar]

The default activation in a Hidden layer created by narnet is tansig. Quick way to check this is by running:

net = narnet;    
net.layers{1}.transferFcn 

This can be changed to other available activations which you can check by typing:

help nntransfer

The answer at this location might be useful too.

[Jorge Rodriguez]

Thank you very much.