geo-linked data: towards deep integration of location in the web of data
TRANSCRIPT
Geo-linked data: towards deep integration of location in the web of dataDr. Andrew Woolf, Bureau of Meteorology
Information explosion
http://www.economist.com/node/21537922
Big data
http://strataconf.com/
Data journalism
http://www.guardian.co.uk/data
Data for development
http://data.worldbank.org/
Location
“everything happens somewhere”
“80% of data is spatial”
http://tweetping.net
BoM: environmental intelligence
http://www.eea.europa.eu/highlights/beyond-gdp/beyond-gdp-final-technical-paper
Spatial integration
SDI GIS
SOA
neo-geographysemantic web
big data
HPC cloud
Spatial data infrastructure?
2010
2020
http://inspire.jrc.ec.europa.eu/index.cfm/pageid/44
Neo-geo?
Linked-data: ‘just enough’ integration
“small pieces, loosely joined”
Location: a killer app for linked-data?
education health
transportstatistics
Document web
1. URI document identifier
2. Resolves with something useful
3. Standard format (HTML)
4. Hyperlinks
Linked-data principles
1. Use URIs as identifiers for Things
http://sws.geonames.org/2172517
2. Make them actionable
→ http://www.geonames.org/2172517/canberra.html
3. Return information following standards
→ http://sws.geonames.org/2172517/about.rdf
4. Link to other information objects
<rdfs:seeAlso rdf:resource="http://dbpedia.org/resource/Canberra"/>
http://www.w3.org/DesignIssues/LinkedData.htmlhttp://www.w3.org/TR/cooluris/
Linked-data querying: SPQRQL
SELECT ?name ?countryWHERE { ?city gs:nearby(-33.9 151.2 10) . ?city gn:name ?name . ?city gn:inCountry ?country }
----------------------------------------------------------| name | country |==========================================================| "Sydney" | <http://www.geonames.org/countries/#AU> || "Wollongong" | <http://www.geonames.org/countries/#AU> || "Katoomba" | <http://www.geonames.org/countries/#AU> || "Cessnock" | <http://www.geonames.org/countries/#AU> || "Newcastle" | <http://www.geonames.org/countries/#AU> || "Nowra" | <http://www.geonames.org/countries/#AU> || "Goulburn" | <http://www.geonames.org/countries/#AU> || "Forster" | <http://www.geonames.org/countries/#AU> || "Orange" | <http://www.geonames.org/countries/#AU> || "Taree" | <http://www.geonames.org/countries/#AU> |----------------------------------------------------------
http://www.geosparql.org
Five stars of open data
UK geo linked-data
•CKAN platform for data.gov.uk
•Extended to support metadata and CSW
•Ordnance Survey
http://www.ordnancesurvey.co.uk/oswebsite/ontology
http://data.ordnancesurvey.co.uk
•Bathing water quality explorer
http://environment.data.gov.uk/lab/bwq-web.html
http://data.gov.uk/library/designing-uri-sets-for-location
Linked data for open government
• OAIC principles on open public sector information
– WHAT but no HOW
• Linked-data provides a standard implementation approach for open public sector information
BoM linked data
lab.environment.data.gov.au
BoM linked data
BoM linked data
BoM linked data
SELECT ?sitename ?districtnameWHERE {?site rdf:type acorn-site:Site.?site rdfs:label ?sitename.?site gn:locatedIn ?district.?district rdfs:label ?districtname.?district gn:parentADM1 <http://lab.environment.data.gov.au/id/rainstate/NewSouthWales>.}
TIBOOBURRA POST OFFICE New South Wales Western Far Northwest
WILCANNIA (REID ST) New South Wales Western Far Northwest
COBAR MO New South Wales Western Upper Darling
BOURKE AIRPORT AWS New South Wales Western Upper Darling
WALGETT AIRPORT AWS New South Wales Northwest Plains W
MOREE AERO New South Wales Northwest Plains E
GUNNEDAH RESOURCE CENTRE New South Wales Northwest Slopes S
INVERELL (RAGLAN ST) New South Wales Northern Tablelands W
… …
Australian Government Linked Data Working Group (AGLDWG)
• Ad-hoc group established August 2012
– BoM, OSP, CSIRO , AGIMO, DRALGAS, NAA, GA, ABS
• 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
• Seeking formal endorsement
AGLDWG activities
• URI rules
– Drawing on UK work
• Deployment architecture
– DNS config, hosting infrastructure, data.gov.au subdomains …
• Ontologies and vocabularies
– W3C ORG, PROV ontologies, AGIFT
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/60975/designing-URI-sets-uk-public-sector.pdf
