Derivative of output neurons wrt to input neurons in loss

[MaAl13]

Hello, i want to define my custom loss function for a fully connected NN. In this loss i want to include the derivative of some output neurons wrt to some input nodes, is this in any way possible?

[DhairyaLGandhi]

Are you looking for the derivative or the jacobian? Nesting AD is an option, so you can call ForwardDiff inside the loss

[MaAl13]

Thank you so much for the response! I think it is atm only the derivative. So how would that Look then with ForwardDiff? How can i pass the explicit input neuron to the ForwardDiff?

[ToucheSir]

If you could provide the actual formulation of the loss function (or much better, a working example in another language), we'd have something to work with. This type of question however should probably be asked on Discourse.