Linked Data and the Semantic Web

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This presentation describes how we move forward to the web of data.

This presentation describes how we move forward to the web of data.

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  • 1. “IT’S THE DATA STUPID..!”LIEKE.VERHELST@WUR.NLWAGENINGEN UNIVERSITY AND RESEARCH CENTRE
  • 2. WHAT IS OPEN DATA?Is a webservice Open Data? • W3C “The Web services architecture is an interoperability architecture” ©esri.com
  • 3. WHAT IS OPEN DATA?Is an API Open Data? • Wikipedia: “An application programming interface (API) is a particular set of rules (code) and specifications that software programs can follow to communicate with each other. It serves as an interface between different software programs”
  • 4. www 20 years!
  • 5. OPEN..OPENER...!April 2011
  • 6. FROM WWW..TO WEB OF DATA ★ Available with open license ★★ Machine readable ★★★ Machine readable without proprietary format ★★★★ URI’s for reference ★★★★★ Link your data to other data
  • 7. ★ AVAILABLE WITH OPEN LICENSE Source: http://lab.linkeddata.deri.ie/2010/star-scheme-by-example/
  • 8. ★★ MACHINE READABLE Source: http://lab.linkeddata.deri.ie/2010/star-scheme-by-example/
  • 9. ★★★ MACHINE READABLE WITHOUT PROPRIETARY FORMAT"Temperature forecast for Galway, Ireland","Day","Lowest Temperature (C)""Saturday, 13 November 2010",2"Sunday, 14 November 2010",4"Monday, 15 November 2010",7 Source: http://lab.linkeddata.deri.ie/2010/star-scheme-by-example/
  • 10. SO...API and web service are max ★★★ open data according toTim Berners-Lee..But ..limited access to data itselfUhh..does it matter..?
  • 11. HOW ..
  • 12. RELATIONAL DATASTRUCTURE
  • 13. NETWORK DATASTRUCTURE(SEMANTIC WEB) 2 1 3 1 2 3 triples (triple store)
  • 14. Ornamentals Plant Composition Research Area Carex flacca Bougainvillea studyObject Aconitum France hasResearchArea Iceland Bunte, F Plants The Netherlands Kabata-Pendias, A. growsIn Italy China Author Country Book187625 writtenBy worksFor Book187626 Utrecht University Publication Philips Wageningen UR Organisation hasTitle“Reduced VAT rates for flowers and plants : situation 2010"“Trace elements in soils and plants” Linked Data (triples) Title
  • 15. LINKED DATA (3D)
  • 16. DATA WEB ARCHITECTUREData storage via XML (RDF) network data structureEvery element has unique ID (URI)HTTP transport protocol -> linkable URLs1. http://library.wur.nl/publications/Book1876252. http://library.wur.nl/writtenBy3. http://library.wur.nl/authors/BunteF
  • 17. LINKED DATA
  • 18. http://www.bbc.co.uk/blogs/bbcinternet/2010/07/bbc_world_cup_2010_dynamic_sem.html
  • 19. INTELLIGENT WEB Lieke University Academic WUR ..if Author worksFor Organisation ofType University then Author hasProfession Academic inferred: Lieke hasProfession Academic
  • 20. MY PROJECTSLinked data analysis & reasoningLinked data demonstratorWUR library: authors and publications Linked Open DataSoon:With Geonovum: Geo Linked Open Data
  • 21. forYourThank You Attention