Struct Bm25Params 

pub struct Bm25Params {
    pub k1: f64,
    pub b: f64,
}

Tuning parameters for BM25. Per Phase 8 Q4 the public surface still exposes these as a struct so we can grow per-call overrides later without breaking signatures, but the Bm25Params::default() values (k1 = 1.5, b = 0.75) are fixed for the MVP and match SQLite FTS5.

Fields

k1: f64

Term-frequency saturation. Higher → less aggressive saturation (each additional occurrence keeps adding to the score). Typical range is [1.2, 2.0]; SQLite FTS5 ships 1.5.

b: f64

Length-normalization weight. 0.0 → no length normalization, 1.0 → fully proportional. SQLite FTS5 ships 0.75.

Trait Implementations

impl Clone for Bm25Params

fn clone(&self) -> Bm25Params

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Bm25Params

impl Debug for Bm25Params

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

Formats the value using the given formatter.

impl Default for Bm25Params

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for Bm25Params

fn eq(&self, other: &Bm25Params) -> 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 Bm25Params