Struct ReduceLROnPlateau 

pub struct ReduceLROnPlateau { /* private fields */ }

Reduce LR on plateau scheduler.

Reduces learning rate when a metric has stopped improving.

Implementations

impl ReduceLROnPlateau

pub fn new(mode: PlateauMode, factor: f32, patience: usize) -> Self

Create a new ReduceLROnPlateau scheduler.

Arguments

• mode - Whether to minimize or maximize the metric
• factor - Factor to reduce LR by (e.g., 0.1)
• patience - Number of epochs with no improvement before reducing

pub fn min_lr(self, min_lr: f32) -> Self

Set minimum learning rate.

pub fn threshold(self, threshold: f32) -> Self

Set threshold for measuring improvement.

pub fn step_with_metric<O: Optimizer>(&mut self, optimizer: &mut O, metric: f32)

Update scheduler with current metric value.

Trait Implementations

impl Clone for ReduceLROnPlateau

fn clone(&self) -> ReduceLROnPlateau

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ReduceLROnPlateau

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl LRScheduler for ReduceLROnPlateau

fn step<O: Optimizer>(&mut self, _optimizer: &mut O)

Update the optimizer’s learning rate.

fn get_lr(&self) -> f32

Get the current learning rate.

fn last_epoch(&self) -> usize

Get the current epoch/step count.