| Value | Meaning |
|---|---|
| METRIC_INNER_PRODUCT0 | < maximum inner product search |
| METRIC_L21 | < squared L2 search |
| METRIC_L12 | < L1 (aka cityblock) |
| METRIC_Linf3 | < infinity distance |
| METRIC_Lp4 | < L_p distance, p is given by metric_arg |
| METRIC_Canberra20 | some additional metrics defined in scipy.spatial.distance |
| METRIC_BrayCurtis21 | |
| METRIC_JensenShannon22 |
Some algorithms support both an inner product version and a L2 search version.