How do I extract a ann's resulting function?

Hi. I have an ANN with 4 inputs, 10 neurons and 1 output. It's already trained and I would like to "extract" the resulting function. I don't want to use the command sim every time I need the results that the net would give me. Is there a way to do that?

Thanks!

Answer 1

[TED MOSBY]

Hi,

The Neural Network Toolbox includes "genFunction", which spits out an M-file you can call just like any other function:

% Suppose your trained network is called 'net' in your workspace:
genFunction(net, 'myNetFcn');

% This creates myNetFcn.m, containing something like:
%   function y = myNetFcn(x)
%   % AUTOGENERATED by Neural Network Toolbox
%   .......

Then you can simple do:

y = myNetFcn(x);   % x is your 4×N input matrix, y is 1×N output

Here is the documentation on "genfunction":

https://www.mathworks.com/help/deeplearning/ref/network.genfunction.html?s_tid=srchtitle_support_results_1_genfunction

Hope this helps!