NetPortGradient

NetPortGradient["port"] represents the gradient of the output of a net with respect to the value of the specified input port.

NetPortGradient["param"] represents the gradient of the output with respect to a learned parameter named param.

NetPortGradient[{layer1,layer2,…,"param"}] represents the gradient with respect to a parameter at a specific position in a net.

NetPortGradient[All] represents the gradients with respect to all inputs and parameters.

Examples

Get gradient with respect to an input port:

NetPortGradient["Input"]
(* NetPortGradient["Input"] *)

Get gradients for all inputs and parameters:

NetPortGradient[All]
(* NetPortGradient[All] *)

Please visit the official Wolfram Language Reference for more details.