semweb 4 gov – opportunities and challenges
DESCRIPTION
Invited presentation (industry track) at International Semantice Web Conference 2013, Sydney, AustraliaTRANSCRIPT
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SemWeb 4 Gov – opportunities and challenges
Dr. Andrew WoolfActing Assistant Director (Climate & Water IT Services), Bureau of Meteorology
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Acknowledgements…
• Josh Bobruk, Robert Boczek, Karl Braganza, Sarah Callaghan, Shirley Crompton, Armin Haller, Colin Harpham, Mike Jackson, Bryan Lawrence, Laurent Lefort, Brian Matthews, Tim Osborn, Clinton Rakich, Will Rogers, Arif Shaon, Jeremy Tandy, Kerry Taylor, Blair Trewin
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Outline
• Drivers
• Use case exemplars
• SemWeb as enabler
• A few projects
• Next steps
• Key lessons
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Outline
• Drivers
• Use case exemplars
• SemWeb as enabler
• A few projects
• Next steps
• Key lessons
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Information explosion
http://www.economist.com/node/21537922
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Big data
http://strataconf.com/
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Data journalism
http://www.guardian.co.uk/data
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Data for development
http://data.worldbank.org/
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Harvard Business Review (Oct 2012)
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United States
My Administration will take appropriate action … to disclose information rapidly in forms that the public can readily find and use. Executive departments and agencies should harness new technologies to put information about their operations and decisions online and readily available to the public.
Memorandum on Transparency and Open Government,Federal Register Vol. 74, No. 15
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United Kingdom
Our plans include:
•Radically opening up data and public information, releasing thousands of public data sets – including Ordnance Survey mapping data, real-time railway timetables, data underpinning NHS choices, and more detailed departmental spending data – and making them free for re-use.
Putting the Frontline First: smarter governmentCabinet Office, 7 December 2009
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Europe
…open access is reaching the tipping point, with around 50% of scientific papers published in 2011 now available for free.…open access will be mandatory for all scientific publications produced with funding from Horizon 2020, the EU's Research & Innovation funding programme for 2014-2020.…Under Horizon 2020 … the Commission will also start a pilot on open access to data collected during publicly funded research…
European Commission - IP/13/786, Brussels, 21 August 2013
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United Nations
We also call for a data revolution for sustainable development, with a new international initiative to improve the quality of statistics and information available to citizens.
A NEW GLOBAL PARTNERSHIP: ERADICATE POVERTY AND TRANSFORM ECONOMIES THROUGH SUSTAINABLE DEVELOPMENTThe Report of the High-Level Panel of Eminent Persons on the Post-2015 Development AgendaUnited Nations, 30 May 2013
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Principle 1: Open access to information - a default positionPrinciple 2: Engaging the communityPrinciple 3: Effective information governancePrinciple 4: Robust information asset managementPrinciple 5: Discoverable and useable informationPrinciple 6: Clear reuse rightsPrinciple 7: Appropriate charging for accessPrinciple 8: Transparent enquiry and complaints processes
Principles on open public sector informationOAIC, May 2011
Australia
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Australia
We will [establish] policies to: •accelerate Government 2.0 efforts to engage online, make agencies transparent and provide expanded access to useful public sector data; …The next wave of opportunities to improve the quality and effectiveness of government services are likely to be driven by access to (appropriately anonymized) public sector data sets and ‘big data’.
The Hon Andrew Robb AO MP, The Hon Malcolm Turnbull MPLiberal Party of Australia, 2 Sep 2013
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Government Open Data
“We commit to pro-actively provide high-value information, including raw data, in a timely manner, in formats that the public can easily locate, understand and use, and in formats that facilitate reuse.”
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Outline
• Drivers
• Use case exemplars
• SemWeb as enabler
• A few projects
• Next steps
• Key lessons
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Climategate
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Independent reviews
“We … conclude that there is independent verification… of the results and conclusions of the Climate Research Unit at the University of East Anglia. ...We … consider that climate scientists should take steps to make available all the data used to generate their published work, including raw data”
House of Commons Science and Technology Committee (31 Mar 2010)
CRU should make available sufficient information, concurrent with any publications, to enable others to replicate their results. …It would benefit the global climate research community if a standardised way of defining station metadata and station data could be agreed, preferably through a standards body, or perhaps the WMO.
The Independent Climate Change E-mails Review, Sir Muir Russell (7 Jul 2010)
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climate change
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biodiversity loss
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natural resource management
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water availability and use
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disaster management
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National Plan for Environmental Information
http://www.bom.gov.au/environment/
“an environmental information system to support the delivery and discovery of priority environmental information”
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Outline
• Drivers
• Use case exemplars
• SemWeb as enabler
• A few projects
• Next steps
• Key lessons
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Sir Tim Berners-Lee on open data...
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But HOW do we open data?
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Sir Tim again…
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Linked (Government) Data
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Linked Data
1. Use URL (Web addresses) as identifiers for objects
2. Publish them on the Web
3. Use Semantic Web standards to model the data
4. Link objects in your dataset to objects in other datasets
Linked Data Principles ‘5 stars’ maturity model
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Outline
• Drivers
• Use case exemplars
• SemWeb as enabler
• A few projects
• Next steps
• Key lessons
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Geospatial Transformation with OGSA-DAI (GeoTOD) [2010]
•Project aims:
– Exploit a high-profile outcome from the >£200M UK government-funded e-Science program
– Implement the UK Cabinet Office guidelines on ‘URI Sets for Location’
– Enable dynamic transformation of existing large spatial datasets
http://data.gov.uk/sites/default/files/Designing_URI_Sets_for_Location-V1.0_10.pdf
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‘Spatial Thing’ http://ea.gov.uk/id/HY/Watercourse/Thames
‘web document’http://ea.gov.uk/doc/HY/Watercourse/Thames
rdfs:seeAlso http://ea.gov.uk/so/HY/Watercourse/ea-UKrivers/e7w1rdfs:seeAlso http://geotod/so/HY/Watercourse/stfc-strategi/4a97ov:similarTo http://ceh.nerc/so/HY/Watercourse/nerc-hydrodb/thames-001
‘303 See other:’
‘Spatial Object’http://geotod/so/HY/Watercourse/stfc-strategi/4a97.rdf
http://geotod/so/HY/Watercourse/stfc-strategi/4a97.htmlhttp://geotod/so/HY/Watercourse/stfc-strategi/4a97.kmlhttp://geotod/so/HY/Watercourse/stfc-strategi/4a97.gml
‘content negotiation’
Designing Location URIs
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GeoTOD linked data framework
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Web resources
Relational resources
Linked SO
Store
OGSA-DAI service
Geotod-D2RQ
RDB
Workflow
Generate RDB-specific
SQL using mapping
file
SPARQL query+
output formatting
D2RQ Mappin
g File
SQL
GeoServer WS
GML query
OGSA-DAI SO store
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GeoTOD
• Challenges:
– Pragmatic interpretation of URI guidelines
– Mapping UML geospatial conceptual models to RDF
• GeoTOD demo:
– http://tiger.dl.ac.uk:8080/geotodls
• UML-to-RDF schema generator:
– http://tiger.dl.ac.uk:8080/rdfsgenerator
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Advanced Climate Research Infrastructure for Data (ACRID) [2010]
•Project aims:
– Address Climategate concerns re publishing climate data
– Enable seamless link from research publication to data
– Include dataset provenance information
– Verify linked-data principles for this problem
https://www.uea.ac.uk/mac/comm/media/press/2010/july/climatedataproject
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Linked-data for ACRID
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DOI and OAI-ORE
•CrossRef DOIs (e.g. http://dx.doi.org/10.1126/science.1157784) are linked-data-enabled (as of April 2011) with conneg:
– RDF/XML, TTL, ATOM
•Open Archives Initiative Object Reuse and Exchange (OAI-ORE)
– description and exchange of aggregations of Web resources
– http://www.openarchives.org/ore/
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ACRID – dataset workflows / provenance
•Various choices
– Open Provenance Model
– Provenance Markup Language
– ISO 19156 (Observations and Measurements)
– Climate Science Modelling Language (CSML)
•Adopted CSML
– Observation measures a Property of a Feature-of-interest using a Procedure and generating a Result
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Australian Climate Observations Reference Network – Surface Air
Temperature (ACORN-SAT) [2012]
•High-quality daily surface temperature (min/max) timeseries’•112 stations•Over 100 years of records•Homogenised for
– Site relocations– Instrument replacement– Local changes
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ACORN-SAT
• Project aims:
– Establish the first Australian Government linked data under data.gov.au
– Trial linked-data for large time-series observation dataset
– Gain experience in applying linked data to information sharing in support of the National Plan for Environmental Information
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Station history: e.g. Darwin19
10
1920
1930
1940
1950
1960
1970
1980
1990
2000
2010
Darwin PO
Darwin AP2
Darwin AP1
Standalone
Standalone
Standalone
Post
Post
Pre
Pre
1941 - 2007Phase 2 (Darwin AP1)
2001 - 2011Phase 3 (Darwin AP2)
1910 - 1942Phase 1 (Darwin PO)
1910
19421941
41 2007
20012007
42 2001
014016
014015
014015
014040
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Semantic Sensor Network Ontology (W3C Incubator Group)
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ACORN-SAT observations as a cube (W3C DataCube ontology)
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Coupling SSN and Data Cube ontologies
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Deployment
*.txt
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Querying: SPARQL
PREFIX gn: <http://www.geonames.org/ontology#>PREFIX acorn-sat: <http://lab.environment.data.gov.au/def/acorn/sat/>SELECT ?station ?day ?month ?year ?tempWHERE { ?obs acorn-sat:maxTemperature ?temp; acorn-sat:timeSeries ?tseries; acorn-sat:day ?day; acorn-sat:month ?month; acorn-sat:year ?year. ?tseries gn:name ?station.FILTER (?temp > 50).}
station day month year temp
Forrest 13 01 1979 50.1
Oodnadatta 03 01 1960 50.3
Oodnadatta 02 01 1960 50.7
Albany 08 02 1933 51.2
New record Jan 2013: Seven consecutive days over 45oC
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Mashups
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Mashups
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Outline
• Drivers
• Use case exemplars
• SemWeb as enabler
• A few projects
• Next steps
• Key lessons
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Australian Government Linked Data Working Group (AGLDWG)
•Terms of reference
– Develop technical guidelines and best practice on the use of ‘linked-data’ by AG agencies
– Inform the development of data.gov.au as a platform for publishing Commonwealth PSI
– Promote the benefits and encourage adoption of ‘linked-data’ for publishing Commonwealth PSI
– Where appropriate, undertake specific activities and coordinate projects in pursuit of these objectives AGLDWG meeting with Sir Tim Berners-Lee,
31 Jan 2013 (Canberra)
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LD-enabling CKAN
• CKAN used by a number of Government open data platforms (incl. UK, AU, US)
• Could it be made more LD-friendly?
– Add registry functionality (e.g. for simple term dictionaries)
– Support namespace-forwarding (e.g. for proxying many-to-many agency-to-subdomain mappings)
• UK Gov LD WG has a prototype already
– https://github.com/der/ukl-registry-poc/wiki
– http://www.slideshare.net/der42/ukgovld-registrywebinarv3
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Outline
• Drivers
• Use case exemplars
• SemWeb as enabler
• A few projects
• Next steps
• Key lessons
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1. Believe in SemWeb 4 Gov!
• Domain/agency-neutral data publishing mechanism
• Encourages information points-of-truth
• Assists ‘naturally’ with cross-agency data integration
• BUT:
– Need to demonstrate value (pilots, prototypes, etc.)
– Agencies will have security concerns
– Deployment behind government firewalls is difficult
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2. Address agency needs
• Simple dictionary publishing would be a good start!
– http://test.wmocodes.info/
• Create robust guidance on simple things
– GeoRSS
– schema.org
– URI Rules
– Vocabulary management
– Effective use of CKAN
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3. Be pragmatic
• At this stage of the adoption curve, more important to get something up than establishing complete semantics
• Agency people mostly won’t like sitting through multi-day ontology workshops!
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4. Establish enabling infrastructure
• May be difficult to deploy own triplestores
• Encourage cloud solutions (public, government, research) e.g. NCI in Australia
• Build SemWeb into collaborations around data.gov(.xxx), e.g. AGLDWG, Cross Jurisdictional Open Government Data Working Group
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5. ‘Geo’ as killer app for LD
• Much government data is spatially-enabled
• Huge value proposition in technology enabling linkage by location of: health, education, statistics, transport, environmental data, etc
• Note geospatial semantics standards work
– ISO 19150 (Geographic information – Ontology)
– OGC GeoSPARQL
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6. Skill-up the ICT contractor pool
• Government uses contractors
• Need to build up a SemWeb ‘cottage industry’
– critical mass issue
• Research partners are essential, but also need industry partners
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7. Engage with Gov
• Chat to your local friendly Gov IT geeks
• Be aware of stuff already happening
– e.g. in environmental information sharing: WaterML, GeoSciML, GWML, INSPIRE
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Dr Andrew [email protected]
Thank you…
Acknowledgements (again) to collaborators: Josh Bobruk, Robert Boczek, Karl Braganza, Sarah Callaghan, Shirley Crompton, Armin Haller, Colin Harpham, Mike Jackson, Bryan Lawrence, Laurent Lefort, Brian Matthews, Tim Osborn, Clinton Rakich, Will Rogers, Arif Shaon, Jeremy Tandy, Kerry Taylor, Blair Trewin