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Location and Linked Data
 

Location and Linked Data

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This talk gives an introduction to linked data, and will focus on challenges around constructing linked data for geographic and spatial information. Examples will focus on work being done at Ordnance ...

This talk gives an introduction to linked data, and will focus on challenges around constructing linked data for geographic and spatial information. Examples will focus on work being done at Ordnance Survey and the wider UK Government.

A lot of data references some kind of location whether it is a place name, street name, address, postcode or some kind of coordinate. Because of this it is becoming clear that location provides an important data integration hub on the linked data web. This talk gives an introduction to linked data, and will focus on challenges around constructing linked data for geographic and spatial information. Examples will focus on work being done at Ordnance Survey and the wider UK Government.

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    Location and Linked Data Location and Linked Data Presentation Transcript

    • Linked data Dr John Goodwin Principal Scientist
    • The nice thing about standards…
    • Programmes of work… • Spatial Data Infrastructures • Linkable data – use of unique identifiers
    • Five stars of linked open data
    • Resource description framework (RDF) The RDF has: •been around for over 10 years – W3C Standard; and •it is to the ‘web of data’ as HTML is to the ‘web of documents’. Subject predicate object Subject predicate value URIs XML Schema Datatype
    • Data silos Person Place Organisation
    • Break down data silos Person Place Organisation http://reference.data.gov.uk/id/department/os http://reference.data.gov.uk/id/department/os/post/1 http://data.ordnancesurvey.co.uk/id/7000000000037256 cg:postIn foaf:based_near
    • Towards a URI for every ‘place’ in GB The City of Southampton: http://data.ordnancesurvey.co.uk/id/7000000000037256 The postcode unit SO16 0AS: http://data.ordnancesurvey.co.uk/id/postcodeunit/SO160AS
    • data.gov.uk • Government departments • Other public bodies • Ministers • Members of Parliament • Members of the House of Lords • Companies House • Land Registry • UK, Scottish, Welsh, Northern Ireland Legislation • ONS Codes History Database • Environment Agency Bathing Water Quality Data • and much much more… (including the BBC and Google!)
    • Joining up government
    • http://environment.data.gov.uk/doc/bathing-water ?county=http://data.ordnancesurvey.co.uk/id/7000000000017765
    • “Big Data” Big Data: • Volume • Velocity • Variety
    • Exploring the Graph
    • A big bucket of data ‘Find me all GPs in my ward, bus stops within a 500 metre radius of those GPs, but exclude bus stops in areas of high crime’ Environment Transport Health Education Business Weather Crime Council
    • GeoSPARQL • GeoSPARQL – OGC standard • http://www.opengeospatial.org/standards/geosparql
    • Conclusion • Data shows its true value when combined with other data sources – linked data creates an opportunity • Usability: common data model and reference of common URIs (for example, postcodes) allows for easy data aggregation and integration. • Shift in focus from cartography and geometries to ‘things’ and the relationships between them. • Not difficult…just a bit different. • Spatial no longer special – part of the bigger information world… • … But location is a very important information hub and provides a key underpinning reference framework which brings many datasets together and provides important context.
    • Contact for further information John Goodwin john.goodwin@ordnancesurvey.co.uk