How to use customized performance function for my neural network?

Hi.. Right now I want to make a neural network with customized performance function.

After searching for information, I found that to use the customized performance function I need to copy the available performance function (ex: mse.m and +mse) then change the code and rename it as my new personal function. However, while I want to change the code I have a problem because I cannot find the part where the mse formula is. Most likely the code only mentions about checking the parameter and input.

I hope somebody would likely to help me to solve my problem in how to use customized performance function to train my neural network.

Thank you very much for your help.

[KAE]

This answer may help.

Answer 1

[youhao yu]

https://www.mathworks.com/help/deeplearning/ug/define-custom-regression-output-layer.html