RDFa and Government Data

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RDFa is a way to embed metadata in ordinary web-pages. It's useful in many situations, and this presentation looks particularly at how RDFa can help governments pursuing open data policies.

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RDFa and Government Data

  1. 1. RDFa and government data Mark Birbeck Backplane Ltd. and W3C Invited Expert
  2. 2. What is RDFa?
  3. 3. Embed data in HTML and XHTML
  4. 4. Why embed data? • Removes ambiguity about the content within a page. • Makes publishing data as easy as publishing HTML.
  5. 5. Precise information Embedding metadata removes the ambiguity about the content of our pages
  6. 6. Title: Chanda’s Secrets by Allan Stratton Stars: ***** I reviewed Stratton's newest teen novel, Leslie's Journal in October. I'd heard about Chanda's Secrets and wanted to give it a try. ...
  7. 7. <div xmlns:v="http://rdf.data-vocabulary.org/#" typeof="v:Review" > <span rel="v:itemreviewed"> <span> Title: <span property="v:name">Chanda’s Secrets</span> </span> </span> Stars: <span property="v:rating" content="5">*****</span> <span property="v:summary"> I reviewed Stratton's newest teen novel, Leslie's Journal in October. I'd heard about Chanda's Secrets and wanted to give it a try. ... </span> </div>
  8. 8. Number of stars, price range, etc., all picked up from the web-page via RDFa and
  9. 9. Publishing HTML was never easier
  10. 10. Embed data to make publishing data as easy as publishing HTML
  11. 11. Case study: Vacancies and consultations Distributing data in UK government web-sites
  12. 12. Static page ASP.NET Who knows?
  13. 13. Momentum for governments to make data 'open'
  14. 14. Linked Data Joining the linked data cloud
  15. 15. <div typeof="v:Review" > <span rel="v:itemreviewed"> <span about="urn:ISBN:1550378341" typeof="bib:book"> Title: <span property="v:name">Chanda’s Secrets</span> </span> </span> Stars: <span property="v:rating" content="5">*****</span> <span property="v:summary"> I reviewed Stratton's newest teen novel, Leslie's Journal in October. I'd heard about Chanda's Secrets and wanted to give it a try. ... </span> </div>
  16. 16. Mark Birbeck’s Twitter account name is <span typeof="foaf:OnlineAccount" rel="foaf:accountServiceHomePage" resource="http://twitter.com" property="foaf:accountName" >markbirbeck</span> and Ben Adida’s is <span typeof="foaf:OnlineAccount" rel="foaf:accountServiceHomePage" resource="http://twitter.com" property="foaf:accountName" >benadida</span>
  17. 17. The future: Open access to the data Anyone can make up their own data sets
  18. 18. RDFa • Removes ambiguity about page data • Makes it easy for anyone to publish data • Powerful enough to enable the publishing of Linked Data • Ideal for publishing government data
  19. 19. W3C Standards • RDFa is a standard, building on other standards, such as RDF • With SPARQL, have a solid foundation for publishing government data
  20. 20. • http://webBackplane.com/rdfa • http://webBackplane.com/mark-birbeck • http://rdfa.info • http://linkeddata.org

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