Rust

The native crate. Build a rolling index over a history with build_index, then find the most similar historical windows with match_index.

cargo add wickra-shazam

use shazam_core::{build_index, match_index, Candle, FingerprintSpec};

const SPEC: &str = r#"{
    "features": [{"kind": "indicator", "name": "Rsi", "params": [14]},
                 {"kind": "price", "field": "close"}],
    "window": 10,
    "normalize": "z_score",
    "metric": "cosine"
}"#;

let spec = FingerprintSpec::from_json(SPEC).expect("valid spec");
let index = build_index(&history, &spec).expect("index");
let report = match_index(&index, &current, 5).expect("match");

for m in &report.matches {
    println!("ts {} similarity {}", m.ts, m.similarity);
}

More

• crates.io/crates/wickra-shazam · docs.rs
• Source & examples
• Fingerprints & spec