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Linked Data Overview - AGI Technical SIG

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Chris Ewing

An overview of Linked Data (from an outsider's point of view!). Given at AGI Technical SIG event on 22nd November 2011

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Linked Data – An Overview Chris Ewing 22 nd November 2011 http://www.flickr.com/photos/reedsturtevant/4288406572/sizes/l/in/set-72157623118237295/
Summary ,[object Object],[object Object],[object Object],http://www.w3.org/DesignIssues/diagrams/lod/480759174v0_350x350_Back.jpg
What is Linked Data? ,[object Object],[object Object]
The semantic web ,[object Object],[object Object],[object Object],[object Object],http://upload.wikimedia.org/wikipedia/en/3/37/Semantic-web-stack.png The Semantic Web Stack
Linked Data - Timeline ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Why is it useful? ,[object Object],[object Object],http://rww.readwriteweb.netdna-cdn.com/images/linked_data_graph.jpg
Why is it useful? ,[object Object],[object Object],[object Object]
Linked Data - Rules ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Rule 1 - on the web ,[object Object],[object Object]
Rule 2 – get information back ,[object Object],[object Object],1. Search 2. Results 3. Items
Rule 3 – Data is Relationships ,[object Object],[object Object],[object Object],[object Object],[object Object]
Linked Data “Rating” 2010 -http://www.w3.org/DesignIssues/LinkedData.html ★ Available on the web (whatever format), but with an open licence ★★ Available as machine-readable structured data (e.g. excel instead of image scan of a table) ★★★ as (2) plus non-proprietary format (e.g. CSV instead of excel) ★★★★ All the above plus, Use open standards from W3C (RDF and SPARQL) to identify things, so that people can point at your stuff ★★★★★ All the above, plus: Link your data to other people’s data to provide context
Linked Data Acronyms http://www.clir.org/pubs/archives/linked-data-survey/part00_b_acronyms.html
URI ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
RDF ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],* http://www.w3.org/TR/rdf-concepts/#section-SimpleFacts RDF Triple
OWL ,[object Object],[object Object],http://www.w3.org/TR/owl-features/
SPARQL ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],e.g. Returns Name and Email of everyone in a dataset
GeoSPARQL ,[object Object],[object Object],[object Object],[object Object],[object Object]
Some examples ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
GeoNames ,[object Object],[object Object],[object Object],[object Object]
Data.gov.uk ,[object Object],[object Object]
Ordnance Survey Linked Data ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
DNF / UK Location ,[object Object],[object Object],[object Object],[object Object],*http://www.agi.org.uk/storage/GeoCommunity/AGI2011/Presentations/RichardDuffield.pdf
*http://www.agi.org.uk/storage/GeoCommunity/AGI2011/Presentations/RichardDuffield.pdf
INSPIRE and Linked Data *http://inspire.jrc.ec.europa.eu/documents/Network_Services/Linked_Data_&_INSPIRE_v101.pdf
http://www.flickr.com/photos/fenng/3199355352/sizes/o/in/photostream/
Chris Ewing Impact Forecasting Aon Benfield Analytics t: +44 (0)207 522 8305 e: [email_address] twitter: @web_gis
References ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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Linked Data Overview - AGI Technical SIG

  • 1. Linked Data – An Overview Chris Ewing 22 nd November 2011 http://www.flickr.com/photos/reedsturtevant/4288406572/sizes/l/in/set-72157623118237295/
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  • 15. Linked Data “Rating” 2010 -http://www.w3.org/DesignIssues/LinkedData.html ★ Available on the web (whatever format), but with an open licence ★★ Available as machine-readable structured data (e.g. excel instead of image scan of a table) ★★★ as (2) plus non-proprietary format (e.g. CSV instead of excel) ★★★★ All the above plus, Use open standards from W3C (RDF and SPARQL) to identify things, so that people can point at your stuff ★★★★★ All the above, plus: Link your data to other people’s data to provide context
  • 16. Linked Data Acronyms http://www.clir.org/pubs/archives/linked-data-survey/part00_b_acronyms.html
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  • 28. INSPIRE and Linked Data *http://inspire.jrc.ec.europa.eu/documents/Network_Services/Linked_Data_&_INSPIRE_v101.pdf
  • 30. Chris Ewing Impact Forecasting Aon Benfield Analytics t: +44 (0)207 522 8305 e: [email_address] twitter: @web_gis
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