Platform Guide

Knowledge graph

Schema packs are versioned, executable ontology contracts. Extraction is candidate-first and evidence-gated; assertions are bitemporal.

Schema packs

A schema pack is a versioned, executable ontology contract rather than a diagram. It defines the entity and relation types the graph will accept, and it is enforced at write time. Packs aligned to the Basic Formal Ontology and the Common Core Ontologies ship for programs that require that conformance — see LACE-GOV.

Candidate-first, evidence-gated extraction

Extracted facts enter as candidates carrying a pointer to the document span they came from. They become assertions only once the evidence gate — and, where configured, human review — accepts them. A model's confidence is not itself sufficient to put a fact in the graph.

Reversible identity resolution

Duplicate entities merge, and the merge is reversible. Because the contributing records keep their identity, an incorrect merge is undone rather than reconstructed by hand — which matters the first time two genuinely different people share a name.

Bitemporal assertions

Every assertion carries both valid time (when the fact was true) and transaction time (when the system recorded it). Corrections supersede history instead of erasing it, so a point-in-time query returns what the organization actually knew on a given date — the question investigations, audits, and litigation holds all turn on.

See Knowledge Graph for the product surface built on this.