Struct ThompsonSamplingTuner 

pub struct ThompsonSamplingTuner { /* private fields */ }

Thompson-sampling multi-armed-bandit tuner over GA operator parameters.

Each parameter (BanditParameter) is discretized into arms; every generation select_all Thompson-samples one arm per parameter, whose value the caller applies to its operators, and observe credits every parameter’s selected arm with each improvement event. Distinct parameters keep independent arms and posteriors, so (unlike the previous learner) mutation-rate and crossover-probability posteriors are free to diverge.

Implementations

impl ThompsonSamplingTuner

pub fn new(parameters: Vec<BanditParameter>) -> Self

Create a tuner from an explicit set of parameters.

pub fn from_config(cfg: &ThompsonConfig) -> Self

Build a tuner from a ThompsonConfig.

pub fn with_history(self, on: bool) -> Self

Enable or disable per-generation snapshot recording.

pub fn parameters(&self) -> &[BanditParameter]

All tuned parameters.

pub fn parameter(&self, name: &str) -> Option<&BanditParameter>

Look up a parameter by name.

pub fn parameter_mut(&mut self, name: &str) -> Option<&mut BanditParameter>

Look up a parameter by name (mutable).

pub fn is_empty(&self) -> bool

Whether the tuner has no parameters to tune.

pub fn select_all<R: Rng>(&mut self, rng: &mut R)

Thompson-sample one arm per parameter for the coming generation.

pub fn selected(&self, name: &str) -> Option<f64>

Value selected for name at the most recent select_all.

pub fn observe(&mut self, improved: bool)

Credit every parameter’s currently selected arm with one improvement event.

pub fn total_observations(&self) -> u64

Total number of improvement events fed back to the tuner.

pub fn snapshot(&mut self, generation: usize)

Record a snapshot of the current posteriors (no-op unless history is enabled).

pub fn history(&self) -> &[TunerSnapshot]

Recorded per-generation snapshots (empty unless history is enabled).

Trait Implementations

impl Clone for ThompsonSamplingTuner

fn clone(&self) -> ThompsonSamplingTuner

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ThompsonSamplingTuner

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

Formats the value using the given formatter.