Crate recern_vector 

Recern Vector — a single-file, embedded, inspectable vector database.

A database is one file holding any number of collections. Each collection stores vectors of a fixed dimension, optional JSON metadata, and an HNSW index whose internals can be inspected through Collection::stats, Collection::explain and Collection::estimate_recall.

use recern_vector::{CollectionConfig, Database, Metric, SearchOptions};

let mut db = Database::open_or_create("docs.rvec")?;
let docs = db.create_collection("docs", CollectionConfig::new(3, Metric::Cosine))?;
docs.upsert("a", &[0.1, 0.9, 0.0], None)?;
docs.upsert("b", &[0.8, 0.1, 0.1], None)?;
let hits = docs.search(&[0.2, 0.8, 0.0], 1, &SearchOptions::default())?;
assert_eq!(hits[0].id, "a");
db.save()?;

Structs

Collection

CollectionConfig

CollectionStats

Database

A database file and the collections it holds.

HnswParams

HNSW index parameters.

RecallOptions

RecallPoint

RecallReport

Record

A stored record. For cosine collections vector is the normalized vector.

SearchHit

SearchOptions

SearchReport

Search results together with the work it took to produce them.

Enums

Error

Filter

Metadata predicate applied during search.

Metric

Distance function of a collection. For every metric, smaller is closer.

Strategy

How a query was answered.

Constants

FORMAT_VERSION

Type Aliases

Result