Location and linked data
- 1. Location and Linked Data Dr John Goodwin Research Scientist Ordnance Survey
- 5. The Problems with Place Hampshire – A confusing place Today: • Hampshire = The (Administrative) County of Hampshire or The (Vernacular) County(ies) of Hampshire. • Wikipedia is confused! Historically: • Southamptonshire, Hamptonshire, County of Southampton • with or without the Isle of Wight and Bournemouth
- 6. Opening UK Public Sector Information: Ordnance Survey and Linked Data • At the forefront of the geospatial linked data web in Great Britain. • Provide a well trusted source of location data for the linked data web.
- 7. Ordnance Survey and Linked Data
- 8. Ordnance Survey Linked Data http://data.ordn..co.uk/id/postcode/SO168BY district http://data.ordn...co.uk/id/7000000000037256 name containedBy The City of Southampton http://data.ordn...co.uk/id/7000000000041421 name South East England
- 9. “Oasis Academy Lord's Hill” name http://education.data.gov.uk/id/school/1234 type postcode edu:School http://data.ord..co.uk/id/postcode/SO168BY district http://data.ordn...co.uk/id/7000000000037256 name containedBy The City of Southampton http://data.ordn...co.uk/id/7000000000041421
- 10. Linked Data & Location In Action
- 12. Linked Data In Action: Mashups and Meshups
- 13. Linked data Meshup Artists that were played on specific BBC radio programmes that come from a specified place Traditional Mashup Fast food vendors in the US
- 15. owl:sameAs osgb:700000000000018 db:Birmingham
- 17. owl:sameAs osgb:700000000000018 db:Birmingham db:homeTown db:Broadcast
- 19. owl:sameAs osgb:700000000000018 db:Birmingham db:homeTown owl:sameAs bbcmusic:aa..#artist db:Broadcast
- 21. owl:sameAs osgb:700000000000018 db:Birmingham db:homeTown owl:sameAs bbcmusic:aa..#artist db:Broadcast foaf:maker bbcprog:aap0..#track bbcprog:aap0..#segment po:track po:time bbcprog:boo..#...
- 24. Key Message: Mashup versus Meshup • URIs: Unambiguously identify a ‘thing’ – avoid name clashes Can be looked up to find data on said ‘thing’ Through the web they provide a mechanism for linking to other datasets via http • Linked Data Format (RDF): A common, simple data model to be used on the web To the web of data what HTML is to the web of documents
- 25. Future Work
- 29. Linked Data API • Developed by Jeni Tennison (TSO), Dave Reynolds (Epimorphics) and Leigh Dodds (Talis) • Not everyone wants to learn SPARQL • Allows RESTful access to services built on top of linked data resources, e.g. http://os.services.tso.co.uk/geo/api/50k-gazetteer/city/Southampton
- 30. Data Enrichment
- 31. Spatial Predicates At small – mid scale a lot can be done using qualitative spatial data, e.g.: • equals • touches • disjoint • contains • containedBy • partiallyOverlaps
- 32. Scaling Things Up • integers • dates • strings • points • etc… • lines • polygons • etc…
- 33. Future Work: Ordnance Survey
- 34. A More Vernacular Geography? • “The General Populous are darned fools: • They use geographical terms they can’t define. • They mix up their attribute datasets. • They can rarely put anything precisely on a map.” Andy Evans (University of Leeds)
- 35. Examples • The Highlands Creative Commons Attribution ShareAlike 3.0 © 2006 Blisco • The Lake District • Spaghetti Junction • The City Centre, Downtown • Southside (Glasgow) • Southside (Edinburgh) • Most Localities (e.g. Merchant City) • The Stag Gates • Foys Corner © Copyright sylvia duckworth, Geograph
- 36. Linking though place Is historical Hampshire representation of (keeper of the concept) Evolves to Is historical representation of Is a representation of Is a Is historical representation of representation of Hampshire Evolves to (Vernacular) Evolves to Hampshire (Administrative)
- 37. So why do we care? • Need from emergency services and the like • Web search needs to be improved
- 38. Conclusions • Location is a key information hub on the linked data web • Linked Data will open up new opportunities
- 39. Some URLs • http://opendata.ordnancesurvey.co.uk/ • http://data.ordnancesurvey.co.uk/ • http://openspace.ordnancesurvey.co.uk/ • http://opentoids.ordnancesurvey.co.uk/