Dear Jena users, I'm happy to announce that the Australian government now has a series of large spatial datasets delivered as Linked Data via web APIs that use Fuseki as the back end in production. This is the firts operation phase of a long-term semantic spatial data layer for Australia.
The data is significant: authoritative census counting geometries, hydrological catchment areas and so on. The census spatial feature collections are online at: https://asgs.linked.fsdf.org.au/dataset/asgsed3/collections A single census region: https://asgs.linked.fsdf.org.au/dataset/asgsed3/collections/SA1/items/10102100710 The largest dataset, the Geocoded National Address file, has 14.5M addresses (all Australian street addresses) with perhaps 50 triples each running well on a single GeoFuseki instance with GeoSPARQL indexing: Feature Collections: https://gnaf.linked.fsdf.org.au/dataset/gnaf/collections Address FC: https://gnaf.linked.fsdf.org.au/dataset/gnaf/collections/addresses Addresses: https://gnaf.linked.fsdf.org.au/dataset/gnaf/collections/addresses/items An Address object: https://gnaf.linked.fsdf.org.au/dataset/gnaf/collections/addresses/items/GANSW718188625 The data from these APIs provide the points-of-truth for national spatial dataset object identity, e.g. the address above with the persistent IRI of: https://linked.data.gov.au/dataset/gnaf/address/GANSW718188625 We are also testing the use of all the various datasets combined in a Digital Atlas of Australia Analytics Platform. That will see complex SPARQL qrieries posed against all the data with geospatial and text filtering, for which we will soon implement Fuseki Lucene text indexes on top of the GeoSPARQL indexes. We have spent a fair bit of time getting RDF generation from non-RDF sources right, running RIOT tooling to check and load RDF data and to build various indexes, mostly in AWS cloud infrastructure. We thank: * Stian Soiland-Reyes * Zazuko * Finland's Semantic Computing Research Group ...for their Fuseki containerisation that has made this relatively easy. Of course, we thank Andy Seabourne and the Apache Foundation for Jena/Fuseki itself! Regards, Nicholas Car n...@kurrawong.net David Habgood dcchabg...@gmail.com
