Fsdf admin boundary linked data

Overview

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 (database dump) 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 the following information.

• ABS 2011 quickstats
• ABS Local Government Area Approximations (based on meshblocks)
• Minimum Bounding Rectangles (in GDA94)
• Minimum Bounding Squares (for use in OGC Web Map Services which need a known aspect ratio)
• Centroid ("Long,Lat")

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

Using SIRF

SIRF APIs can be used to:

• search for admin units
• find related identifiers for admin units
• find and information resources that use these identifiers
• run SPARQL queries over the topology product

Identifiers

http://demo.sirf.net/siset/AUS-FSDF/admin/2 is the identifier for NSW in the topology product

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:

Service interfaces 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
• SISSVoc search interface http://sissvoc.ereefs.info/search?endpoint=http://unsdi-dev.csiro.au/sissvoc/skosview&q=
• WFS and WMS for the ABS approximate boundary geometries, via NICTA, accessible via simple Linked data views:
• • http://demo.sirf.net/siset/AUS-FSDF/admin/158?_view=fsdf:geometry_abs&_format=gml3
• • http://demo.sirf.net/siset/AUS-FSDF/admin/158?_view=mapPreview&_format=png
• QRCODE generator at http://demo.sirf.net/siset/AUS-FSDF/admin/158?_view=qrcode

Additional services include relationships - not yet described in the alternates view

The list of related units is at:

http://unsdi-dev.csiro.au/sissvoc/lu/related?uri=http://demo.sirf.net/siset/AUS-FSDF/admin/2

The list of available relations is at:

http://unsdi-dev.csiro.au/sissvoc/lu/relations?uri=http://demo.sirf.net/siset/AUS-FSDF/admin/2

Cross-references to other identifiers are at:

http://unsdi-dev.csiro.au/sissvoc/lu/listall?uri=http://demo.sirf.net/siset/AUS-FSDF/admin/2

for a specific target namespace:

http://unsdi-dev.csiro.au/sissvoc/lu/alt?uri=http://demo.sirf.net/siset/AUS-FSDF/admin/2&altns=http://demo.sirf.net/siset/AUS-ABS/admin/lga-equiv