Created
December 9, 2018 10:32
-
-
Save devforfu/f8abf04888b92dfc94d169d34e182895 to your computer and use it in GitHub Desktop.
Cosine annealing schedule
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
class CosineAnnealingSchedule: | |
""" | |
The schedule class that returns a learning rate multiplier from range [0.0, 1.0] | |
""" | |
def __init__(self, eta_min=0.0, eta_max=1.0, t_max=100, t_mult=2): | |
self.eta_min = eta_min | |
self.eta_max = eta_max | |
self.t_max = t_max | |
self.t_mult = t_mult | |
self.iter = 0 | |
def update(self, **kwargs): | |
self.iter += 1 | |
eta_min, eta_max, t_max = self.eta_min, self.eta_max, self.t_max | |
t = self.iter % t_max | |
eta = eta_min + 0.5 * (eta_max - eta_min) * (1 + math.cos(math.pi * t / t_max)) | |
if t == 0: | |
self.iter = 0 | |
self.t_max *= self.t_mult | |
return eta |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment