def parameters_changed(self):
self.Y_normalized[:] = self.transform_data()<EOL>super(WarpedGP, self).parameters_changed()<EOL>Kiy = self.posterior.woodbury_vector.flatten()<EOL>self.warping_function.update_grads(self.Y_untransformed, Kiy)<EOL>
Notice that we update the warping function gradients here.