Expert Corrections
ArcaQ feature
§1 — How Expert Corrections work
Corrections are structured objects with a full audit trail — not free-text notes.
Structured correction fields
Original value, corrected value, entity URI, domain, justification, confidence score.
Role-gated access
Only users with knowledge:expert permission can submit corrections.
Visual highlight in graph
Corrected nodes receive a yellow accent in the knowledge graph view.
Versioned diffs
Every correction is stored as a new version snapshot with diff view.
Domain attribution
Corrections carry a domain field enabling domain-level quality metrics.
SPARQL queryable
Query all corrections — filter by domain, expert, date, or confidence.
§2 — Correction data model
Each correction is a first-class RDF resource in <arcaq:corrections/>.
@prefix arcaq: <http://arcaq.com/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
arcaq:corrections/corr-001
a arcaq:ExpertCorrection ;
arcaq:targetEntity <http://arcaq.com/kg/entity/42> ;
arcaq:originalValue "Aspirin inhibits COX-1 only" ;
arcaq:correctedValue "Aspirin inhibits both COX-1 and COX-2" ;
arcaq:domain arcaq:Medicine ;
arcaq:confidence "0.97"^^xsd:decimal ;
arcaq:correctedBy arcaq:users/dr-chen ;
arcaq:correctedAt "2026-05-14T10:00:00Z"^^xsd:dateTime .
§3 — Admin: Expert Promotion
Admins promote trusted users to expert status via the Second Brain admin panel. Experts stored in <arcaq:admin-roles/>.
| Method | Endpoint | Description |
|---|---|---|
| POST | /second-brain/admin/promote | Promote a user to expert (requires knowledge:admin) |
| DELETE | /second-brain/admin/promote/{user_id} | Revoke expert status |
| GET | /second-brain/admin/experts | List all promoted experts |
| GET | /second-brain/admin/is-expert | Check if current user is expert |