Enum BaseKernel 

pub enum BaseKernel {
    Rbf {
        length_scale: f64,
    },
    Matern52 {
        length_scale: f64,
    },
    Periodic {
        period: f64,
        length_scale: f64,
    },
    Linear {
        variance: f64,
    },
    WhiteNoise {
        variance: f64,
    },
}

One of the atomic kernel functions in the grammar.

Variants

Rbf

Squared-exponential (RBF) kernel with length scale ℓ > 0.

Fields

length_scale: f64

Matern52

Matérn 5/2 kernel with length scale ℓ > 0.

Fields

length_scale: f64

Periodic

Periodic kernel with period p > 0 and length scale ℓ > 0.

Fields

period: f64

length_scale: f64

Linear

Linear kernel with variance σ² > 0: k(x, y) = σ² · x · y.

Fields

variance: f64

WhiteNoise

White-noise kernel: k(x, x) = σ², k(x, y) = 0 for x ≠ y.

Fields

variance: f64

Implementations

impl BaseKernel

pub fn eval(&self, x1: f64, x2: f64) -> f64

Evaluate k(x1, x2).

pub fn name(&self) -> &'static str

Short human-readable name.

pub fn with_length_scale(&self, new_ell: f64) -> Self

Return a version of this kernel with updated hyperparameters.

Trait Implementations

impl Clone for BaseKernel

fn clone(&self) -> BaseKernel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BaseKernel

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

Formats the value using the given formatter.

impl PartialEq for BaseKernel

fn eq(&self, other: &BaseKernel) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for BaseKernel