Struct CustomExponentialKernel 

pub struct CustomExponentialKernel {
    pub length_scale: Float,
}

Custom exponential kernel (1D version of Laplacian) CustomExponentialKernel

Fields

length_scale: Float

length_scale

Implementations

impl CustomExponentialKernel

pub fn new(length_scale: Float) -> Self

Trait Implementations

impl Clone for CustomExponentialKernel

fn clone(&self) -> CustomExponentialKernel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CustomExponentialKernel

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

Formats the value using the given formatter.

impl KernelFunction for CustomExponentialKernel

fn kernel(&self, x: &[Float], y: &[Float]) -> Float

Compute the kernel value between two vectors

fn fourier_transform(&self, w: &[Float]) -> Float

Get the characteristic function of the kernel’s Fourier transform This should return the Fourier transform of the kernel at frequency w For most kernels, this is needed to generate appropriate random features

fn sample_frequencies( &self, n_features: usize, n_components: usize, rng: &mut RealStdRng, ) -> Array2<Float>

Sample random frequencies for Random Fourier Features This method should sample frequencies according to the spectral measure of the kernel (i.e., the Fourier transform of the kernel)

fn description(&self) -> String

Get a description of the kernel