kind of a high-level idea of policy gradients but the idea is that in order to get this derivative to find out like how much of this weight contributed to the validation loss you have to take a gradient through a gradient which is a pretty complex idea that's maybe better explained in the next equation from the paper hopefully this equation from the paper were further explain the idea of taking a gradient through a gradient to update the parameters v from the teacher network with respect to the parameters theta T plus 1 that are evaluated on the