open-standards/aac/vocab
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spec(aac): 0.2.0 — language honesty, and timing that belongs to the person
- §4.1 Language honesty: every language states how its core vocabulary was
  obtained (CoreStatus); an absent status reads as GlossOnly; glosses are never
  presented as a language's core. Withdraws the claim that one ~400-word core
  covers ~80% of every language.
- §5.1 Timing belongs to the person: scan rate and dwell are theirs to set;
  automatic adaptation is off unless they opt in; changes are proposed, never
  silent.
- §5.2 Scan-rate floor: max(⌊100·M/65⌋, P95), from at least 10 responses.
  The previous reference set 80% of the mean press, so the highlight had
  usually moved on when the person pressed.
- §5.3 Dwell proposals go both ways, with floors, replacing "should adapt to
  fatigue" (the old reference only ever lengthened the dwell).
- §10 adds C5–C7; §11 says access and vocabulary choices are never a
  prerequisite for starting.
- spec/access_model.md, the lexicon and the ontology agree (new CoreStatus
  class and individuals; scanRateMs, dwellMs, adaptationOptIn; Turtle, SHACL
  and JSON-LD validated with rdflib). New aac-rs/README.md covers testing,
  the static build, and hosting Express under another site.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
2026-09-28 16:26:17 -04:00
..
LEXICON.md spec(aac): 0.2.0 — language honesty, and timing that belongs to the person 2026-09-28 16:26:17 -04:00
README.md Add aac, map, sandbox standards; catalog the standards family 2026-06-07 17:04:36 -04:00
v1.jsonld spec(aac): 0.2.0 — language honesty, and timing that belongs to the person 2026-09-28 16:26:17 -04:00
v1.shapes.ttl Add aac, map, sandbox standards; catalog the standards family 2026-06-07 17:04:36 -04:00
v1.ttl spec(aac): 0.2.0 — language honesty, and timing that belongs to the person 2026-09-28 16:26:17 -04:00

AAC vocabulary (v1)

Stable IRIs and the controlled vocabulary for the AAC open standard.

  • v1.ttl — the OWL ontology (board, cell, symbol, access methods, cascade levels, provenance, properties).
  • v1.jsonld — the JSON-LD 1.1 context for AAC documents.
  • v1.shapes.ttl — SHACL shapes, including the motor-stability and never-billed couplings (SPEC §3, §9).
  • LEXICON.md — the term glossary.

Namespace: https://aac.transaction.science/vocab/v1# (prefix aac:). Licensed CC-BY-4.0 with the rest of the specification text.