Struct EarlyStopping 

pub struct EarlyStopping { /* private fields */ }

Early stopping callback.

Implementations

impl EarlyStopping

pub fn new(patience: usize) -> Self

Create early stopping with patience (number of trials without improvement).

pub fn min_delta(self, delta: f64) -> Self

Set minimum improvement threshold.

Trait Implementations

impl<P: ParamKey> Callback<P> for EarlyStopping

fn on_trial_end(&mut self, _trial_num: usize, result: &TrialResult<P>)

Called after each trial with results.

fn should_stop(&self) -> bool

Return true to stop optimization early.

fn on_start(&mut self, _space: &SearchSpace<P>)

Called at the start of optimization.

fn on_trial_start(&mut self, _trial_num: usize, _trial: &Trial<P>)

Called before each trial.

fn on_end(&mut self, _best: Option<&TrialResult<P>>)

Called at the end of optimization.

impl Debug for EarlyStopping

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

Formats the value using the given formatter.