Question
Hi, i'm using the neural network for classification using nnstart and i have dataset (input) with a size of 9*981 and i want to know how to choose the number of neurons in the hidden layer for it ?
Expert Answer
John Michell
PhD Expert
Answered Aug 20, 2026
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.
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