Choice lists become concept schemes
Status: proposed
Every closed answer set an NWSS instrument offers is a SKOS concept scheme in the standard. Concepts have stable IRIs, a skos:notation and a definition. An instrument’s choice values map to concepts in the instrument mapping. The legacy values a project used are kept as skos:hiddenLabel or in its mapping, never as concept IRIs.
Variants of one list across projects merge into one scheme. The missing_damaged and missing_damaged_qr values merge into one concept, and a 0–10 and a 1–10 satisfaction scale merge into one closed 0–10 scale. Yes/no answers, counts, scores and entity pickers are not schemes; entity pickers reference entities by IRI.
A project that needs a value the scheme lacks proposes it, as ncgs does for species. Until the standard approves it, a project-provisional concept is marked provisional and can be used only for that project.
Distilled from the 51 choice lists of novaWaste2’s 27 live SurveyCTO forms (docs/distillation/choice-lists.md).