SextantOntology and lineage platform
A mini-Foundry for maritime data. It pulls port and vessel records from three public sources, merges duplicates into real entities, and can trace every stored value back to the source row and transforms that produced it. Underneath is an LSM storage engine I wrote from scratch.
- of 4,201 values replay from source
- 100%
- batched writes per second
- 1.53M
- F1 on entity resolution
- 0.991
# cluster, fuse, write entities with provenance $ sextant resolve 1451 source records, 470 candidate pairs 1187 entities written, 4201 properties, 4201 provenance records dedup ratio 0.1819 (1451 records -> 1187 entities) # the lineage round trip $ sextant explain lineage round trip 1187 entities, 4201 properties 4201 verified, 0 failed -> 100.00%

