Module `Owl_opt.Lr`

learning rate module

type t = | Fix of float fixed learning rate | Ada of int -> float adaptive learning rate

Example learning rates

(* fix learning rate *)
let lr = Lr.(Fix 1E-4)

(* expoential decay *)
let lr = Lr.(Ada (fun k -> exp (-0.1 *. float step))

`\|` `Fix of float`	fixed learning rate
`\|` `Ada of int -> float`	adaptive learning rate