Presented by: George Planansky, CGA Affiliate.
Location: Room S050 of CGIS South, 1730 Cambridge St, Cambridge, MA.
Abstract:
When you annotate a map, are you annotating a document, or are you annotating the Earth? Or an image of the earth? Is this just a matter of semantics?
Maps use a visual language to depict representations, of the earth’s surface. These are geographic images in mathematical language, but also cartographic creations that bespeak a cartographic language.
Semantic annotation uses yet another language, the ontology, to classify and describe things. Ontologies use controlled vocabularies and a formal computational logic language, to describe things and their relationships, and thereby create computational logic models of different scenarios. As a basis for universal, linked-data datastore schemas, ontologies enable concept and data federation.
This presentation will build on the idea that we all know what a map is, to illustrate what ontologies are, by delving into the cartographic object ontology as an extension of the W3C Open Annotation Model. The OAM itself being an ontology for describing … well, guess what?. You will also see GeoSPARQL, a geospatial ontology extension of the SPARQL semantic linked data query language.
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