sirf case study_icc2013

International Cartographic Conference, Dresden

Spatial Identifier Reference Framework (SIRF)Realising the potential of SDI using spatial identifiers to link multiple information systems.

GOVERNMENT AND COMMERCIAL SERVICES THEME

Rob Atkinson | Paul Box | Laura Kostanski August 2013

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

access rights

The Linked Data Vision

Data about the world

application

The Web

Object ID (URL)

context

Magic

Spatial identifiers describe ‘the Somewhere’

Spatial Data Infrastructure (SDI)

• Fundamental component of spatial datasets • Used to reference data

Geospatial information

BPS-ID Name GER ‘08 Tpop’10

003 Nusa Tenggara Barat 111.08 1,318,840

005 Nusa Tenggara Timur 112.09 335,805

Statistical information (Implicitly geospatial)Spatial

identifiers

Bureau of Stats - 003

West Nusa Tenggara

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UNSDI Spatial Identifier Reference Framework | Paul Box

“Distributed” references

Catchment ExtractionRate Storage

1123343 730 300

Internet

How to ask for this entity

How to deliver this entity

Catchment Boundary Area Geometry

1123343 33535.4 151.3344,-35.330…….

One real world feature - multiple representations

Multiple - names, identifiers, geometries, versions

Geospatial information

UNSTATS Name GRP’08 $

IND03 NTB 8,080

IND05 NTT 4,769

BPS-ID Name GER ‘08 Tpop’10

003 Nusa Tenggara Barat 111.08 1,318,840

005 Nusa Tenggara Timur 112.09 335,805

Statistical information (Implicitly geospatial)Spatial

IdentifierReference FrameworkGazetteer ID - 002234

Bureau of Stats - 003

Spatial Data Infrastructure (SDI)

7 |

UNSDI Spatial Identifier Reference Framework | Paul Box

Gazetteer – a special case of Spatial Identifier

GAZETTEERID, placename(s), feature type, location

• Official list of names • Related to mapping process (toponymic)• Used for map lookup

Names are ambiguous

One name – many places

One place - many names• Australia, Australie, أستراليا• Wollongong, ‘the gong’ • Sydney, City of Sydney

Melbourne – locality – Victorian Gazetteer –Official

Melbourne – municipal council boundaries – official

discovery

relevance

access rights

CSIRO. UN Gazetteer - Common Semantic Framework for the UNSDI

Barriers to use of common spatial references

Spatial feature dataset

access mechanism

format

semantics

identifier stability

changecitation

application

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

http://id.unsdis/id/catchment/567http://id.unsdis/id/catchment/567

URL: spatial data accessURL: spatial data access

URL: observation data archive accessURL: observation data archive access

URL: live data accessURL: live data access

representations Basic properties provenance

URL: virtual data productURL: virtual data product

Identifier Architecture

Sensor Web (image OGC 2006)

Spatial Data Infrastructure

WFS WCS

Spatialdatabases

Services

Linked Data Web

Observation Archive(Data Warehouse)

Transactions

Data Marts Services

Application

Reports

ComputationalModels

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 youFor more information

Rob.atkinson@csiro.au

GOVERNMENT AND COMMERCIAL SERVICES THEME