Enum WeightFunction 

pub enum WeightFunction {
    Huber {
        c: f64,
    },
    Bisquare {
        c: f64,
    },
    Andrews {
        c: f64,
    },
    Cauchy {
        c: f64,
    },
    Fair {
        c: f64,
    },
    Logistic {
        c: f64,
    },
}

Weight functions for IRLS

Variants

Huber

Huber weight function: w(r) = min(1, c/|r|)

Fields

c: f64

Bisquare

Bisquare (Tukey) weight function: w(r) = (1 - (r/c)^2)^2 if |r| <= c, 0 otherwise

Fields

c: f64

Andrews

Andrews wave weight function: w(r) = sin(πr/c) / (πr/c) if |r| <= c, 0 otherwise

Fields

c: f64

Cauchy

Cauchy weight function: w(r) = 1 / (1 + (r/c)^2)

Fields

c: f64

Fair

Fair weight function: w(r) = 1 / (1 + |r|/c)

Fields

c: f64

Logistic

Logistic weight function: w(r) = tanh(cr) / (cr)

Fields

c: f64

Trait Implementations

impl Clone for WeightFunction

fn clone(&self) -> WeightFunction

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WeightFunction

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

Formats the value using the given formatter.

impl PartialEq for WeightFunction

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