Neural Network - How to use a custom training function

Is it possible to replace standard matlab training methods (like Gradient Descent, Levenberg-Marquardt, etc.) by other methods of global optimization, like Particle Swarm Optimization or Simulated Annealing?

I was looking at C:\Program Files\MATLAB\R2018a\toolbox\nnet\nnet\nntrain\... for some clues, but nothing comes up...

Attached are two original files of the mentioned training functions ( traingd and trainlm ).

Answer 1

[Greg Heath]

Use the help and doc commands on

 trainru
trainb
trainr
trainc
trains
trainbu
trainscg
traingdx
traingdm
traingd
trainbr
traingda

There may be more, my website search using "trainfcn" was very brief.

Thank you for formally accepting my answer

Greg

[David Franco]

Yeah, I know all of these training functions.

My question is: Can I use my own custom training function and replace these MATLAB inbuilt?

Thanks!

[Carsten Daldrup]

Did you found something since then?

Answer 2

[Sumaiya Ahmad]

I have not tried, but I think it might work,

Please try the following command:

net.trainFcn = 'custom_function_name';

where

net is your network name.

trainFcn is property to the name of the corresponding function

custom_function_name is training function defined by you

(I hope it might help you)