Enum AcquisitionType 

pub enum AcquisitionType {
    EI {
        xi: f64,
    },
    PI {
        xi: f64,
    },
    UCB {
        kappa: f64,
    },
    KG {
        n_fantasies: usize,
        seed: u64,
    },
    Thompson {
        seed: u64,
    },
    BatchEI {
        batch_size: usize,
        xi: f64,
    },
    BatchUCB {
        batch_size: usize,
        kappa: f64,
    },
}

Enumeration of acquisition function types for configuration.

Variants

EI

Expected Improvement with exploration parameter xi.

Fields

xi: f64

PI

Probability of Improvement with exploration parameter xi.

Fields

xi: f64

UCB

Upper Confidence Bound with exploration parameter kappa.

Fields

kappa: f64

KG

Knowledge Gradient with n_fantasies and seed.

Fields

n_fantasies: usize

seed: u64

Thompson

Thompson Sampling with seed.

Fields

seed: u64

BatchEI

Batch EI with batch_size and xi.

Fields

batch_size: usize

xi: f64

BatchUCB

Batch UCB with batch_size and kappa.

Fields

batch_size: usize

kappa: f64

Implementations

impl AcquisitionType

pub fn build( &self, f_best: f64, reference_points: Option<&Array2<f64>>, ) -> Box<dyn AcquisitionFn>

Create a boxed acquisition function instance from this type.

Some variants (like KG) require additional context:

• f_best - Current best observed value
• reference_points - Reference points for KG (pass empty if not KG)

pub fn batch_size(&self) -> usize

Returns the batch size (1 for non-batch acquisitions).

Trait Implementations

impl Clone for AcquisitionType

fn clone(&self) -> AcquisitionType

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AcquisitionType

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

Formats the value using the given formatter.

impl Default for AcquisitionType

fn default() -> Self

Returns the “default value” for a type.