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Admin Boundary Topology Product Linked Data
The Admin Boundary Topology data product provides reliable identifiers for administrative units together with accurate and reliable encoding of the topological relationships (containments, adjacency) and hierarchical relationships between administrative units. The product also provides multiple versions of administrative unit geometry developed for different purposes at different scales.
The product is being delivered via a web service as a downloadable file and via the SIRF API. The Spatial Identifier Reference Framework (SIRF) is a scalable Linked Data infrastructure that aims to improve the supply of spatially enabled open and linked information.
For the purposes of the Hackfest the AB Topology product has been indexed in SIRF and cross-referenced with ABS statistical information .
SIRF APIs can be used to:
- search for admin units
- find related identifiers for admin units
- find and information resources that use these identifiers
A temporary URI space is being used for the product for the purposes of the Hackfest - this is at http://demo.sirf.net/siset/AUS-FSDF/admin
The identifier for NSW in the topology product is http://demo.sirf.net/siset/AUS-FSDF/admin/2
Administrative unit identifiers and relationships between them, have been modelled using multiple ontologies:
- GeoSPARQL Simple Features relationships (geo:sfWithin) etc*
- SKOS (basic definitions, additional SKOS relations to be included if desired)
- Cross -references (owl:sameAs) to ABS equivalent object codesThis has been deployed using the data management processes of the SIRF infrastructure and is accessible at:
A number of service interfaces have been implemented
- URI resolution (http 303 redirect to definition - see http://demo.sirf.net/siset/AUS-FSDF/admin/2(NSW)
- LID (see https://wiki.csiro.au/display/SIRF/Linked+IDentifier+-+LID) http://demo.sirf.net/siset/AUS-FSDF/admin/2?_view=alternates&_format=html
- SIRF Datanetwork (see alternates view above)
- SPARQL endpoint (temporarily at http://unsdi-dev.csiro.au/openrdf-sesame/repositories/unsdi-lu - note repository has other unrelated data)
- SISSVoc interface for SKOS view (https://wiki.csiro.au/display/SIRF/SISSVoc+in+SIRF) http://unsdi-dev.csiro.au/sissvoc/skosview/concept
The following are examples of additional queries that can be used to:
Obtain a list of related units:
http://unsdi-dev.csiro.au/sissvoc/lu/related?uri=http://demo.sirf.net/siset/AUS-FSDF/admin/2
Obtain a list of relationships for a specific unit:
http://unsdi-dev.csiro.au/sissvoc/lu/relations?uri=http://demo.sirf.net/siset/AUS-FSDF/admin/2
Cross-references to other identifiers for a unit:
http://unsdi-dev.csiro.au/sissvoc/lu/listall?uri=http://demo.sirf.net/siset/AUS-FSDF/admin/2
for a specific target namespace:
See the SIRF API documentation for more information.