Export a neural network trained with MATLAB in other programming languages

Question

I trained a neural network using the MATLAB Neural Network Toolbox, and in particular using the command nprtool, which provides a simple GUI to use the toolbox

Answer 1

This is a small improvement to the great Vito Gentile's answer.

If you want to use the preprocessing and postprocessing 'mapminmax' functions, you have to pay attention because 'mapminmax' in Matlab normalizes by ROW and not by column!

This is what you need to add to the upper "classify" function, to keep a coherent pre/post-processing:

[m n] = size(input);
ymax = 1;
ymin = -1;
for i=1:m
   xmax = max(input(i,:));
   xmin = min(input(i,:));
   for j=1:n
     input(i,j) = (ymax-ymin)*(input(i,j)-xmin)/(xmax-xmin) + ymin;
   end
end

And this at the end of the function:

ymax = 1;
ymin = 0;
xmax = 1;
xmin = -1;
Results = (ymax-ymin)*(Results-xmin)/(xmax-xmin) + ymin;

This is Matlab code, but it can be easily read as pseudocode. Hope this will be helpful!