Unit of Assurance

UnitOfAssurance,CredibilityEvidencePackage

Cou2

https://uofa.net/surrogate/airfrans/cou2

Described in packs/surrogate/examples/airfrans/cou2/uofa-surrogate-airfrans-cou2.jsonld

Fields

@type UnitOfAssurance
@type CredibilityEvidencePackage
uofa:synthetic true
uofa:conformsToProfile https://uofa.net/vocab#ProfileMinimal
schema:name AirfRANS surrogate — COU2: extrapolation evaluation (out-of-envelope)
schema:description Case study COU2. The SAME AirfRANS surrogate as COU1, evaluated at a point drawn from the AirfRANS Reynolds-extrapolation split (Re = 8.0e6, above the trained maximum of 6.0e6). Everything else is held identical to COU1, so the sole divergence is W-SURR-03 — the surrogate analogue of the NASA take-off-vs-cruise divergence, legible in a single uofa diff figure. Expected: W-SURR-03 fires; decision Not Accepted.
uofa:couName COU2: NACA airfoil lift/drag prediction, Reynolds extrapolation
uofa:intendedUse Prediction at a Reynolds number above the trained range.
uofa:assuranceLevel Medium
uofa:decision Not accepted
uofa:modelRiskLevel 2
prov:generatedAtTime 2026-05-30T00:00:00Z
uofa:hash sha256:0000000000000000000000000000000000000000000000000000000000000000
uofa:signature ed25519:00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

References

uofa:bindsRequirement https://uofa.net/surrogate/airfrans/cou2/req
uofa:hasValidationResult https://uofa.net/surrogate/airfrans/cou2/residual-check
uofa:hasDecisionRecord https://uofa.net/surrogate/airfrans/cou2/decision
uofa:hasContextOfUse https://uofa.net/surrogate/airfrans/cou2/cou
surr:trainingEnvelope https://uofa.net/surrogate/airfrans/cou2/env
surr:evaluationPoint https://uofa.net/surrogate/airfrans/cou2/ep
surr:declaredPhysicsConstraint https://uofa.net/surrogate/airfrans/cou2/pc
surr:parentModelSnapshot https://uofa.net/surrogate/airfrans/cou2/parent

Integrity

This identifier names a signed package. Verify it yourself against the record in the repository.

uofa check --build packs/surrogate/examples/airfrans/cou2/uofa-surrogate-airfrans-cou2.jsonld