Enum Kernel 

pub enum Kernel {
    Linear,
    RBF,
    Polynomial,
    Sigmoid,
}

The kernel function for Kernel PCA.

Variants

Linear

Linear kernel: K(x, y) = x . y.

RBF

RBF (Gaussian) kernel: K(x, y) = exp(-gamma * ||x-y||^2).

Polynomial

Polynomial kernel: K(x, y) = (gamma * x . y + coef0)^degree.

Sigmoid

Sigmoid kernel: K(x, y) = tanh(gamma * x . y + coef0).

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