Struct TermShape 

pub struct TermShape { /* private fields */ }

One term’s shape function: piecewise constant on the grid its trees cut its features into, centered to mean zero over the training rows.

Feature a of the term (features) has the cells of axes[a]; values holds one value per grid cell, row-major (the first feature’s cell slowest), so a main term has axes[0].cells() values and a pair axes[0].cells() × axes[1].cells(). Built only by shape_functions and term_shape, so the three always agree.

Implementations

impl TermShape

pub fn features(&self) -> &[u32]

The term’s features (one, or two ascending).

pub fn axes(&self) -> &[TermAxis]

The cells along each feature.

pub fn values(&self) -> &[f64]

The shape’s value on every cell, row-major.

pub fn cell(&self, x: &[f32]) -> Result<usize>

The index into values of the cell holding the feature values x (one per feature of the term; NaN is missing, a category no split names is the axis’s “other” cell).

Errors

HessboostError::DimensionMismatch unless x has one value per feature of the term.

pub fn value(&self, x: &[f32]) -> Result<f64>

The shape’s value at the feature values x (as cell).

Errors

As cell.

Trait Implementations

impl Clone for TermShape

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TermShape

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

Formats the value using the given formatter.

impl PartialEq for TermShape

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for TermShape