Struct Bm25Params 

pub struct Bm25Params {
    pub k1: f32,
    pub b: f32,
}

Per-field BM25 parameters (indexed<k1: ..., b: ...> in the schema).

Fields

k1: f32

b: f32

Implementations

impl Bm25Params

pub fn for_field(schema: &Schema, field: Field) -> Self

Resolve a field’s parameters from its schema entry.

pub fn score(self, tf: f32, idf: f32, doc_len: f32, avg_doc_len: f32) -> f32

BM25 score of one term occurrence set.

pub fn score_boosted( self, tf: f32, idf: f32, doc_len: f32, avg_doc_len: f32, field_boost: f32, ) -> f32

BM25F score with a field boost.

pub fn upper_bound(self, max_tf: f32, idf: f32) -> f32

Upper bound with the shortest possible unit (length 0).

pub fn upper_bound_with_len( self, max_tf: f32, idf: f32, min_len: f32, avg_len: f32, ) -> f32

Upper bound with a known minimum unit length.

Trait Implementations

impl Clone for Bm25Params

fn clone(&self) -> Self

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: &Self) -> bool

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Bm25Params