Geo-linked data: towards deep integration of location in the web of data

Geo-linked data: towards deep integration of
location in the web of data
Dr. 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

http://tweetping.net

“everything happens
somewhere”

“80% of data is spatial”

BoM: environmental intelligence

http://www.eea.europa.eu/highlights/
beyond-gdp/beyond-gdp-final-technical-paper

Spatial integration

neo-geography
semantic web
SDI GIS

SOA big data

HPC cloud

Spatial data infrastructure?

2010

2020
http://inspire.jrc.ec.europa.eu/index.cfm/pageid/44

Linked-data: ‘just enough’ integration

“small pieces, loosely joined”

Location: a killer app for linked-data?

ed
u ca
tio th
n al
he

tra
ns
s po
istic rt
stat

Document web

1. URI document identifier 3. Standard format (HTML)

4. Hyperlinks

2. Resolves with something useful

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/TR/cooluris/
http://www.w3.org/DesignIssues/LinkedData.html

Linked-data querying: SPQRQL

SELECT ?name ?country
WHERE
{
http://www.geosparql.org
?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> |
----------------------------------------------------------

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

SELECT ?sitename ?districtname
WHERE {
?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 https://www.gov.uk/government/uploads/
system/uploads/attachment_data/file/60975/
– Drawing on UK work designing-URI-sets-uk-public-sector.pdf

• Deployment architecture
– DNS config, hosting infrastructure, data.gov.au
subdomains …
• Ontologies and vocabularies
– W3C ORG, PROV ontologies, AGIFT

Thank you…

Andrew Woolf

a.woolf@bom.gov.au

Geo-linked data: towards deep integration of location in the web of data

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