MATLAB: Hey I need to know how to know how many neurons

aaDeep Learning Toolbox

I would like how to use nntool, please could anyone help me, or tell me where I could find information about all the training functions, and performance functions.

Best Answer

Search the NEWSGROUP and ANSWERS using

 Ntrneq Nw

where I have used the criterion that the number of UNKNOWN weights, Nw, should not exceed the number of training EQUATIONS Ntrneq.

               No. of SEARCH HITS
            NEWSGROUP      ANSWERS
 Ntrneq Nw    43            152

This yields an upperbound, Hub, on the number of hidden nodes in a single hidden layer net.

If more hidden nodes are required, one can replace the default training function TRAINLM with TRAINBR

 help trainbr
 doc trainbr

Hope this helps.

Thank you for formally acceptingmy answer

Greg

Related Solutions

MATLAB: How to train a feedfordward neural network with error weights

 Use the command window
 help mse
 doc mse

Hope this helps.

Thank you for formally accepting my answer

Greg

MATLAB: How to choose the number of neurons in the hidden layer of neural network

Use trial and error with the training subset goal

 MSEtrngoal = 0.01*var(trntarget,1)        % 1-D target
 or
 MSEtrngoal = 0.01*mean(var(trntarget',1)) % Otherwise

Start with the MATLAB default H = 10 and design ~10 nets for each setting of H. Each of the 10 is initialized with a different setting of random initial weights.

Hope this helps

Thank you for formally accepting my answer

Greg

Best Answer

Related Solutions

MATLAB: How to train a feedfordward neural network with error weights

MATLAB: How to choose the number of neurons in the hidden layer of neural network

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