Enum Metric 

pub enum Metric {
    Cosine,
    L2,
    DotProduct,
}

Distance metric for vector comparison.

Variants

Cosine

Cosine distance: 1 - dot(q,c) / (|q| * |c|). Range [0, 2] where 0 = identical.

L2

Euclidean (L2) distance: sqrt(sum((q_i - c_i)^2)).

DotProduct

Negated dot product: -dot(q,c). Negated so that lower = better (consistent with min-heap search).

Trait Implementations

impl Clone for Metric

fn clone(&self) -> Metric

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Metric

impl Debug for Metric

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

Formats the value using the given formatter.

impl Eq for Metric

impl PartialEq for Metric

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