Struct BM25Retriever 

pub struct BM25Retriever { /* private fields */ }

BM25 (Best Matching 25) retriever using Okapi BM25 scoring.

Pre-computes term frequencies, document lengths, and inverse document frequencies at construction time for efficient retrieval.

Implementations

impl BM25Retriever

pub fn new(documents: Vec<Document>) -> Self

Create a new BM25Retriever with default parameters (k1=1.5, b=0.75).

pub fn with_params(documents: Vec<Document>, k1: f64, b: f64) -> Self

Create a new BM25Retriever with custom k1 and b parameters.

Trait Implementations

impl Clone for BM25Retriever

fn clone(&self) -> BM25Retriever

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BM25Retriever

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

Formats the value using the given formatter.

impl Retriever for BM25Retriever

fn retrieve<'life0, 'life1, 'async_trait>( &'life0 self, query: &'life1 str, top_k: usize, ) -> Pin<Box<dyn Future<Output = Result<Vec<Document>, SynapseError>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,