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CosineAnnealingLR

entrenar::optim

Struct CosineAnnealingLR 

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pub struct CosineAnnealingLR { /* private fields */ }
Expand description

Cosine Annealing Learning Rate Scheduler

Decreases the learning rate following a cosine curve from lr_max to lr_min.

Formula: lr_t = lr_min + 0.5 * (lr_max - lr_min) * (1 + cos(pi * t / T))

Where:

  • t is the current step
  • T is the total number of steps
  • lr_max is the initial learning rate
  • lr_min is the minimum learning rate (default 0)

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impl CosineAnnealingLR

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pub fn new(lr_max: f32, t_max: usize, lr_min: f32) -> Self

Create a new cosine annealing scheduler

§Arguments
  • lr_max - Initial (maximum) learning rate
  • t_max - Total number of steps for the schedule
  • lr_min - Minimum learning rate (default 0)
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pub fn default_min(lr_max: f32, t_max: usize) -> Self

Create scheduler with lr_min = 0

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pub fn apply<O: Optimizer>(&self, optimizer: &mut O)

Apply the current learning rate to an optimizer

Trait Implementations§

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impl LRScheduler for CosineAnnealingLR

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fn get_lr(&self) -> f32

Get the current learning rate
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fn step(&mut self)

Step the scheduler (typically called after each epoch or batch)

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