class

GS::Autograd::SubBackward

Inherits GS::Autograd::GradFn < Reference < Object

Gradient function for subtraction: c = a - b dc/da = 1, dc/db = -1

Constructors

Instance methods

backward(grad_output : Tensor) : Array(Tensor | Nil)

Compute gradients w.r.t. inputs given gradient of output Returns array of gradients, one per input (or nil if input doesn't require grad)

Source