Struct Bm25Index 

pub struct Bm25Index { /* private fields */ }

In-memory BM25 inverted index over a single text field.

Implementations

impl Bm25Index

pub fn tokenize(text: &str) -> Vec<String>

Lowercase, split on non-alphanumeric. Cheap and dependency-free.

pub fn build<I, S>(docs: I, params: Bm25Params) -> Self

where I: IntoIterator<Item = (NodeId, S)>, S: AsRef<str>,

Build the index from (id, text) pairs.

pub fn len(&self) -> usize

Number of indexed documents.

pub fn is_empty(&self) -> bool

pub fn search(&self, query: &str, k: usize) -> Vec<(NodeId, f32)>

Top-k documents by BM25 score for query, descending. Only documents with a positive score are returned.

Trait Implementations

impl Clone for Bm25Index

fn clone(&self) -> Bm25Index

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Bm25Index

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

Formats the value using the given formatter.