Enum Kernel 

pub enum Kernel {
    Gaussian,
    Epanechnikov,
    Triangular,
    Uniform,
    Biweight,
    Triweight,
    Cosine,
}

Kernel functions for density estimation

Variants

Gaussian

Gaussian (normal) kernel: K(u) = (2pi)^{-1/2} exp(-u^2/2)

Epanechnikov

Epanechnikov kernel: K(u) = 3/4 (1 - u^2) for |u| <= 1

Triangular

Triangular kernel: K(u) = (1 - |u|) for |u| <= 1

Uniform

Uniform (rectangular) kernel: K(u) = 1/2 for |u| <= 1

Biweight

Biweight (quartic) kernel: K(u) = 15/16 (1 - u^2)^2 for |u| <= 1

Triweight

Triweight kernel: K(u) = 35/32 (1 - u^2)^3 for |u| <= 1

Cosine

Cosine kernel: K(u) = pi/4 cos(pi u / 2) for |u| <= 1

Implementations

impl Kernel

pub fn evaluate(&self, u: f64) -> f64

Evaluate the kernel function at point u.

pub fn support_radius(&self) -> f64

Return the finite support radius for bounded kernels, or f64::INFINITY for Gaussian.

Trait Implementations

impl Clone for Kernel

fn clone(&self) -> Kernel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Kernel

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

Formats the value using the given formatter.

impl PartialEq for Kernel

fn eq(&self, other: &Kernel) -> 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 Copy for Kernel

impl Eq for Kernel

impl StructuralPartialEq for Kernel