What is the default transfer function for fitnet?
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I've been trying to find out what the default network configuration settings for the fitnet function are. It's not clear exactly which of the many transfer functions were used and the documentation of the function is not explicit.
What is MATLAB's default transfer function when I use:
train(fitnet(N), x, y)
Is it sgn? Is it tanh? What is that activation function?
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KAE
le 19 Fév 2020
Greg, do you happe to know where in the documentation it says that tansig is the default?
I can only find how to list all the available functions,
help nntransfer
or get info on tansig itself,
doc tansig
but neither states that it is the default, and if you don't already have a network in memory, I am not sure how to look this up, and think there must be a secret stash of documentation that I don't know about.
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Tilak Nanavati
le 20 Mai 2020
I thnk this might help.
Follow these steps:
net = fitnet;
net.layers{1}
Doing this you'll able to see something like this:
The "transferFcn" indicates the transfer function.
Neural Network Layer
name: 'Hidden'
dimensions: 10
distanceFcn: (none)
distanceParam: (none)
distances: []
initFcn: 'initnw'
netInputFcn: 'netsum'
netInputParam: (none)
positions: []
range: [10x2 double]
size: 10
topologyFcn: (none)
transferFcn: 'tansig'
transferParam: (none)
userdata: (your custom info)
KSSV
le 19 Fév 2018
net = fitnet(N) ;
Check net, it will be a class of network. In that type net.Layers{i}, where i = 1,2...if you have only one hidden layer. In that you can fin the activation function and other details.
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Greg Heath
le 20 Fév 2018
%If you want to know network details, just remove ending semicolons on a succession of commands
net = fitnet
%Then scrolling down see the layers term?
layers: {2x1 cell array of 2 layers}
% Therefore, continuing command by command
hiddenlayerproperties = net.layers{1}
outputlayerproperties = net.layers{2}
Hope this helps
Thank you for formally accepting my answer
Greg
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