Function distance_non_negative_finite

nodedb-codec/src/vector_quant/bbq.rs:430–454

()

    #[test]
    fn distance_non_negative_finite() {
        let dim = 32;
        let vecs: Vec<Vec<f32>> = (0..8).map(|i| rand_vec(i, dim)).collect();
        let refs: Vec<&[f32]> = vecs.iter().map(|v| v.as_slice()).collect();
        let codec = BbqCodec::calibrate(&refs, dim, 3);

        for i in 0..vecs.len() {
            for j in 0..vecs.len() {
                let qi = codec.encode(&vecs[i]);
                let qj = codec.encode(&vecs[j]);
                let sym = codec.fast_symmetric_distance(&qi, &qj);
                assert!(
                    sym.is_finite() && sym >= 0.0,
                    "fast_symmetric_distance({i},{j}) = {sym}"
                );

                let query = codec.prepare_query(&vecs[i]);
                let asym = codec.exact_asymmetric_distance(&query, &qj);
                assert!(
                    asym.is_finite() && asym >= 0.0,
                    "exact_asymmetric_distance({i},{j}) = {asym}"
                );
            }
        }
    }

    #[test]
    fn oversample_default_is_three() {