Open Property Data Association
Smart Property Data Trust Framework
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    Interactive graph · engine bake-off

    Ontology graph

    The whole ontology as a node-link graph, rendered from the committed SPARQL-derived model (ADR-0043 / ADR-0047). Each tab is a different graph engine drawing the same 41 classes and object properties, coloured by node type. Use Filter by facet to show only chosen opda:ufoCategory meta-categories, or flip Show SKOS layer to add the 48 concept schemes and 319 concepts. Click a node to focus its neighbourhood and open its dereferenceable /pdtf page. Engines lazy-load from a CDN on first view.

    Graph engine — click a tab to switch:

    Initialising…
    Filter by facet

    Per-term pages: Classes · Vocabularies (SKOS) · Shapes (SHACL). The classification doctrine behind the facets: Identity & classification. Tooling decisions: ADR-0043 · ADR-0047.

    External-only tools (scored in the bake-off but can’t read the corpus behind the site’s edge auth, so they aren’t live tabs): WebVOWL (OWL-only, interactive) · SKOS Play! (concept-scheme trees / sunburst). Point either at a public export to use them.