Function distance_non_negative_finite

nodedb-codec/src/vector_quant/rabitq.rs:452–464

()

    #[test]
    fn distance_non_negative_finite() {
        let dim = 64;
        let vecs: Vec<Vec<f32>> = (0..8).map(|i| random_vec(i as u64, dim)).collect();
        let refs: Vec<&[f32]> = vecs.iter().map(|v| v.as_slice()).collect();
        let codec = RaBitQCodec::calibrate(&refs, dim, 7);
        let v1 = codec.encode(&random_vec(100, dim));
        let v2 = codec.encode(&random_vec(200, dim));
        let sym = codec.fast_symmetric_distance(&v1, &v2);
        assert!(sym.is_finite() && sym >= 0.0, "sym distance: {sym}");
        let q = codec.prepare_query(&random_vec(300, dim));
        let asym = codec.exact_asymmetric_distance(&q, &v2);
        assert!(asym.is_finite() && asym >= 0.0, "asym distance: {asym}");
    }

    #[test]
    fn calibrate_identical_vectors_zero_residual() {