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Linked Open Data and data-driven journalism


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A keynote held at the Media 3.0 seminar in Bergen. It is an introductionary presentation of simple key elements of linked open data. It adresses media and journalists, what data driven journalism can look like and why they should care about what linked open data can offer.

Published in: Technology, Education

Linked Open Data and data-driven journalism

  1. 1. Linked Open Data –why media/journalists should care and make use of it!<br />PiaVirmalainenJøsendal<br />
  2. 2. Today´s agenda..<br />
  3. 3. Take a moment and think…<br />“OH, I wish i could see connections between this and this and this and that<br />without searching everywhere and drawing my own mindmap…!”<br />
  4. 4.
  5. 5. What is Linked Open Data?<br />Guidelines to publish, structure and link data on the web<br />Web of data<br />Semantic Web technologies<br />“Linked data is the first practical expression of the semantic<br />web, useful and doable today, and applicable to all forms<br />of data.” (<br />
  6. 6. 1st<br />open data and linked data<br />Open data<br />data available without restrictions – independent of format <br />Linked data<br />links data together by relations to contextualizethem<br />(I Norge brukes også Offentlige data vekselvis med Åpne data og Public SectorInformation (PSI))<br />
  7. 7. 2nd<br />linked data and semantic web<br /> Linked data <br />Semantic web <br /> - a machine readable set of standards URI, HTTP, RDF, SPARQL (W3C)<br /> - a vision to improve meaning in content on the web by defining relations between data<br />
  8. 8. Linked open data as the original web<br />Semantic web enables<br /> a linked open data web<br />
  9. 9. What is Linked Open Data about?<br />
  10. 10. Bottom line<br />The more data being provided and made available to the public as OPEN, LINKED and accessible with semantically defined content..<br />…the smarter our applications can be..<br />Source:<br />
  11. 11. From databases to graphs<br />
  12. 12.
  13. 13. Hvorfor?<br />
  14. 14. Group & define<br />
  15. 15. The challenge with hierarchies and classification<br />People look for patterns<br />Interpretation has always been difficult<br />As always – people are different and as situations change, context changes<br />
  16. 16. How about… <br />Don’t put data into tight boxes that are hard to reach down into and drag something out of… <br />the coat most often gets wrinkled…<br />A triangle doesn’t fit in a round hole..<br />And create a nice pair of shaded sunglasses for the data set to wear at appropriate occations…? <br />
  17. 17. 17<br />Linked open data offers a dynamic set of facets<br />LOD is a line of principles to align data<br /> manypair of glasses to look at the material<br />An architecture<br /> presented like ONE archive<br />
  18. 18. Oktober 2007<br />500 million triples<br />Cirka 120 000 links between resources<br />
  19. 19. September 2010<br />
  20. 20. Challenging assembly of information?<br />
  21. 21. Using Linked Data<br />
  22. 22. Confused?<br />
  23. 23. Growth of Linked Open Data<br /><br />
  24. 24. Government projects<br />
  25. 25. Large potential for reuse<br />
  26. 26. Existing useful vocabularies<br /><ul><li>Therearealready a bunchofwellknownvocabularies to useoutthere:</li></ul>Simple KnowledgeOrganisation System SKOS, <br />Dublin Core DC,<br />Friend-of-a-friend FOAF, <br />CreativeCommons CC, <br />MusicOntologyMO<br />
  27. 27. Creative use of weather data<br />Based on data from YR<br />
  28. 28. Planning the weather…<br />
  29. 29.<br />
  30. 30. ]init[ - Services for the eSociety<br />Working “to support society's protagonists and organisations in their leading role in the modern society”<br />eGovernment and eBusiness<br />
  31. 31. Enterprise Linked Data<br />Is there data which, if published, could make your business more efficient, or generate value, whether directly or indirectly?<br />
  32. 32. Vocabulary “GoodRelations” for eCommerce<br />
  33. 33. A concluding rehearsal..<br />Try to…<br />..listen to the person next to you..<br />..when he/she starts to clap..<br />..and you yourself start to clap..<br />..and try to clap at the same pace..<br />..untill..<br />
  34. 34. Get lodding!<br />“to lod (verb): lod, lodded, lodding – the act of publishing linked open data on the World Wide Web, adhering to the rules of linked data.” (<br />
  35. 35. credits<br />Flower analogy – Dr. Hans Rosling/ KarolinskaInstitutt<br />Social networks – David Simons/The economist<br />Video Tim Berners-Lee/TEDTalks<br />Weather examples – Erik Bolstad/NRK<br />
  36. 36. Thank you for your attention!<br />questions?<br />To contact me:<br />Name: PiaVirmalainenJøsendal<br />Twitter: mspjvj<br />
  37. 37. Mashups, APIs andlinked open data<br />– They do not work with clients that have not been<br />designed with the specificAPI in mind.<br />– Their content cannot be accessed by search engines<br />and other generic web agents.<br />– Each mashup only allows access to data from<br />a limited number of sources chosen by the developer.<br />In contrast, information on the Semantic Web can<br />be used by generic clients, including RDF browsers,<br />RDF search engines, and web query agents.<br />The RDF Book Mashup: From Web APIs to a Web of Data<br />Christian Bizer, Richard Cyganiak, and Tobias Gauß<br />