Struct KernelFunction 

pub struct KernelFunction {
    pub kernel_type: KernelType,
}

A kernel function k: ℝ^d × ℝ^d → ℝ.

Fields

kernel_type: KernelType

Kernel type identifier.

Implementations

impl KernelFunction

pub fn new(kernel_type: KernelType) -> Self

Create a new kernel function.

pub fn evaluate(&self, x: &[f64], y: &[f64]) -> f64

Evaluate the kernel k(x, y) where x, y are vectors in ℝ^d.

pub fn is_positive_definite(&self, points: &[Vec<f64>]) -> bool

Check if the kernel matrix for a set of points is positive semi-definite (via Cholesky: all pivots ≥ -ε for numerical tolerance).