RDF and ontology mappings

Every NeoWiki page's Subjects are available as RDF. The same data is offered in two ways:

A native projection in NeoWiki's own vocabulary. Lossless, always available, no setup.
Ontology projections that re-express the data in an established vocabulary such as the Europeana Data Model (EDM). Each one is defined by a Mapping page.

Each export is produced on demand from the page's current data and downloads as a Turtle or TriG file. A projection can also be kept in a SPARQL store and queried live — see SPARQL queries on wikis that have a store configured, such as the NeoWiki development stack.

The Mapping page

Each Mapping page targets one ontology, named by the page title, and holds an entry for every mapped Schema. This wiki ships one:

Mapping:EDM — the Person, City, Artwork and Artist Schemas, all mapped to EDM

Explore the projections

Follow these in order; each link downloads the projection so you can read it.

Pablo Picasso, native vs EDM: the native file has everything, including the two-layer "Born in" relation and the page metadata; the EDM file is an edm:Agent carrying only the mapped vocabulary, with the unmapped Source absent.
Málaga, EDM: an edm:Place — and the very same entity IRI that Picasso's rdaGr2:placeOfBirth points at, because sibling projections share entity IRIs.
The Milkmaid, EDM: an edm:ProvidedCHO whose dc:creator is the IRI of Vermeer (an edm:Agent) and whose edm:currentLocation is the Rijksmuseum.
Johann Sebastian Bach, EDM: Bach's birth is modelled as its own Birth Subject instead of flat fields, so his edm:Agent projects sparse — the same Person Schema as Picasso, a different modelling style.
ACME Inc, EDM: its Company Schema has no EDM Mapping, so the EDM projection comes back empty — a Schema without a Mapping is simply absent, which is how conformant output stays conformant.

Learn more

RDF export reference
Ontology mapping reference
Person-to-EDM worked example
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