Hello Cuthbert,
From what I gather, you are looking to manually implement an activation function and assign this custom function to "OutputLayerActivation". Unfortunately, when using the fitrnet function, you are limited to predefined activation functions such as 'relu', 'sigmoid', 'none', and 'tanh', as specified in the documentation:
However, you do have the option to utilize dlnetworks, which allows you to create your own layers that can serve as custom activation functions.
For more information on how to define custom layers, please review the following documentation:
Hope this helps.
