Spatial Identifier Reference Framework (SIRF) Realising the potential of SDI using spatial identifiers to link multiple information systems. International Cartographic Conference, Dresden Rob Atkinson | Paul Box | Laura Kostanski August 2013 GOVERNMENT AND COMMERCIAL SERVICES THEME
Today’s Presentation • The Vision • The Problem • A Spatial Identifier Reference Framework (SIRF) • Mechanisms • Status
Vision Versions…. • “Evidence based decision making” • Discovering and integrating data from multiple sources • because problems are multidimensional • geographic basis of issues and actions • geography is shared • Spatial Data Infrastructures • manage spatial data once, and share it • efficiency and efficacy • Semantic Web • machine interpretation
The Linked Data Vision Data about the world access rights Magic The Web Object ID (URL) context application
Spatial identifiers describe ‘the Somewhere’ Geospatial information Statistical information (Implicitly geospatial) Spatial identifiers BPS ‐ ID Name GER ‘08 Tpop’10 003 Nusa Tenggara Barat 111.08 1,318,840 Bureau of Stats - 003 005 Nusa Tenggara Timur 112.09 335,805 Spatial Data Infrastructure (SDI) West Nusa Tenggara • Fundamental component of spatial datasets • Used to reference data UNSDI Spatial Identifier Reference Framework | Paul Box 5
“Distributed” references Catchment ExtractionRate Storage 1123343 730 300 How to ask for this entity Internet How to deliver this entity Catchment Boundary Area Geometry 1123343 33535.4 151.3344, ‐ 35.330…….
One real world feature ‐ multiple representations Geospatial information Statistical information Spatial (Implicitly geospatial) Identifier Reference Gazetteer ID - 002234 UNSTATS Name GRP’08 $ Framework IND03 NTB 8,080 IND05 NTT 4,769 BPS ‐ ID Name GER ‘08 Tpop’10 003 Nusa Tenggara Barat 111.08 1,318,840 Bureau of Stats - 003 005 Nusa Tenggara Timur 112.09 335,805 Spatial Data Infrastructure (SDI) Multiple - names, identifiers, geometries, versions UNSDI Spatial Identifier Reference Framework | Paul Box 7
Gazetteer – a special case of Spatial Identifier GAZETTEER ID, placename(s), feature type, location • Official list of names • Related to mapping process (toponymic) • Used for map lookup Melbourne – locality – Victorian Gazetteer –Official Names are ambiguous One name – many places One place ‐ many names Australia, Australie, ايلارتسأ Wollongong, ‘the gong’ Sydney, City of Sydney Melbourne – municipal council boundaries – official
Barriers to use of common spatial references Spatial feature dataset discovery relevance access rights access mechanism format semantics identifier stability change citation application CSIRO. UN Gazetteer ‐ Common Semantic Framework for the UNSDI
Is any platform going to work? • A single “big bucket” doesn’t work (well enough) • Authority vs. coverage • Spatial Data Infrastructures are slow to emerge and hard to use • Informal data and Big Data increasingly important • Legacy systems using incompatible identifiers • Specialised systems needing specific views • Semantic Web unproven and unfriendly to existing systems • Linked Data has too much variability
Spatial Identifier Reference Framework • Respect multiple views, authorities, usages • Better description of existing systems and resources • Semantic Web and Linked Data for better discovery • Provenance and authority linked to SDI where available • Small set of extensions to various standards to support interoperability of spatial identifiers
Linked Data Web Reports Application http://id.unsdis/id/catchment/567 http://id.unsdis/id/catchment/567 Identifier Architecture Basic properties provenance representations URL: spatial data access URL: spatial data access URL: observation data archive access URL: observation data archive access URL: live data access URL: live data access Services Data Marts URL: virtual data product URL: virtual data product Transactions Observation Archive (Data Warehouse) Services WFS WCS Spatial databases Computational Spatial Data Infrastructure Models Sensor Web (image OGC 2006)
Status • Testing with Australian and Indonesian gazetteers and administrative boundaries, hydrological catchments, Open Street Map data • Ways to describe resources • Working services (machine interfaces) • (Very crude) HTML applications implementation • Testing federation across multiple nodes • Documentation and software being prepared for open release CSIRO. UNSDI Gazetteer for Social Protection in Indonesia
CSIRO. UNSDI Gazetteer for Social Protection in Indonesia
Resource “graph” CSIRO. UNSDI Gazetteer for Social Protection in Indonesia
Thank you For more information Rob.atkinson@csiro.au GOVERNMENT AND COMMERCIAL SERVICES THEME
Recommend
More recommend
