Enum PairSurfaceBackend 

pub enum PairSurfaceBackend {
    GridExact,
    DenseRidge,
}

Which estimator produced a PairSurfaceFit.

Variants

GridExact

The streaming 2-D grid engine: exact REML on the full anisotropic biharmonic penalty (mixed f_{x1x2} term included), O(n) assembly, exact log-determinants — the first-class pair-component estimator.

DenseRidge

The dense ridge fallback (fit_tensor_surface) on the SAME B-spline tensor basis, used only when the grid solve degenerates (e.g. a non-positive-definite penalized system or n − edf < 1).

Trait Implementations

impl Clone for PairSurfaceBackend

fn clone(&self) -> PairSurfaceBackend

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PairSurfaceBackend

impl Debug for PairSurfaceBackend

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

Formats the value using the given formatter.

impl Eq for PairSurfaceBackend

impl PartialEq for PairSurfaceBackend

fn eq(&self, other: &PairSurfaceBackend) -> 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 PairSurfaceBackend