The decay rate for the 1st moment estimates.
The decay rate for the 2nd moment estimates.
Clip gradient to the range of [-clip_gradient, clip_gradient] If clip_gradient <= 0, gradient clipping is turned off. grad = max(min(grad, clip_gradient), -clip_gradient).
A small constant for numerical stability.
If true, lazy updates are applied if gradient's stype is row_sparse and all of w, m and v have the same stype
Rescale gradient to grad = rescale_grad*grad.
Weight decay augments the objective function with a regularization term that penalizes large weights. The penalty scales with the square of the magnitude of each weight.