Semantic Web - Linked Data - RDF

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Presentation at "The Semantic Web, Libraries, and Visual Resources" session at VRA + ARLIS/NA 2nd Joint Conference in Minneapolis, MN.

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Semantic Web - Linked Data - RDF

  1. 1. Semantic Web Linked Data RDF
  2. 2. Distributed Expertise
  3. 3. Distributed Data
  4. 4. Why the Web?
  5. 5. Why the Semantic Web?
  6. 6. RDF Resource Description Framework
  7. 7. RDF Resource Description Framework expresses meaning machine readable communicates with links
  8. 8. RDF Resource Description Framework expresses meaning machine readable communicates with links
  9. 9. RDF Resource Description Framework expresses meaning machine readable communicates with links
  10. 10. Why links?
  11. 11. Internet
  12. 12. Linked Data Tim Berners-Lee
  13. 13. Linked Data Sir Tim Berners-Lee
  14. 14. http://www.otherThings.org/thing1/ http://www.moreThings.org/thing2/ http://www.someThings.org/thing3/ http://www.neatThings.org/thing4 / Linked Data http://www.things.org/thing1/ http://www.otherThings.org/thing5/ http://www.moreThings.org/thing6/ http://www.someThings.org/thing7/ http://www.neatThings.org/thing4 8 Info about Thing #1 http://www.otherThings.org/thing1/ http://www.moreThings.org/thing2/ http://www.someThings.org/thing3/ http://www.neatThings.org/thing4 /
  15. 15. Web API
  16. 16. RDF
  17. 17. A Mosque is a type of Building
  18. 18. A Mosque is a type of Building RDF triple
  19. 19. A Mosque is a type of Building RDF triple subject predicate object
  20. 20. A Mosque is a type of Building RDF triple link + link + link
  21. 21. A Mosque is a type of Building http://www.w3.org/2004/02/skos/core#Concept /Mosque
  22. 22. A Temple is a type of Building http://www.w3.org/1999/02/22-rdf-syntax-ns# type
  23. 23. A Temple is a type of Building http://www.w3.org/2004/02/skos/core# Concept/Building
  24. 24. A Mosque is a type of Building http://www.w3.org/2004/02/skos/core#Concept/Building http://www.w3.org/2004/02/skos/core#Concept /Mosque http://www.w3.org/1999/02/22-rdf-syntax-ns# type
  25. 25. A Mosque is a type of Building http://www.w3.org/2004/02/skos/core#Concept/Building http://www.w3.org/2004/02/skos/core#Concept /Mosque http://www.w3.org/1999/02/22-rdf-syntax-ns# type
  26. 26. A Mosque is a type of Building RDF Triple http://www.w3.org/2004/02/skos/core#Concept/Building http://www.w3.org/2004/02/skos/core#Concept /Mosque http://www.w3.org/1999/02/22-rdf-syntax-ns# type
  27. 27. link RDF links give meaning Ontolgy Schema Vocabulary link link ?
  28. 28. RDFS OWL RDF Schema Web Ontology Language
  29. 29. RDFS OWL RDF Schema Classes (general things) Web Ontology Language
  30. 30. RDFS OWL RDF Schema Classes (general things) Web Ontology Language Relationships that can exist among things
  31. 31. RDFS OWL RDF Schema Classes (general things) Web Ontology Language Relationships that can exist among things Properties (or attributes) those things may have
  32. 32. Class Librarian: subclass of person
  33. 33. Class Librarian: subclass of person Person: subclass of human
  34. 34. Class Librarian: subclass of person Person: subclass of human Human: subclass of animal
  35. 35. Logic Therefore:
  36. 36. Logic Therefore: Librarians are animals
  37. 37. Class A Mosque is a Building A Building has a Geographic Location A Building has a human creator
  38. 38. Class This Mosque is located on Temple Mount Therefore it is located in Jerusalem Therefore it is in a Holy City
  39. 39. RDF candy store
  40. 40. RDF mixable schemas Architecture http://www.vraweb.org/vracore/4.0 Location http://www.opengis.net/ Religion http://www.loc.gov/mods/v3 Politics http://www.loc.gov/mods/v3 News http://www.pbcore.org/PBCore/
  41. 41. RDF mixable vocabularies Architecture http://dbpedia.org/class/yago/ Location http://www.geonames.org/ Religion http://www.freebase.com/ Politics http://id.loc.gov/authorities/ News http://cv.iptc.org/newscodes/
  42. 43. Dome Search for: Built work + Dome + Islamic Hagia Sophia Built work Mosque Dome of the Rock
  43. 44. Arcade Dome of the Rock San Vitale Mosque Religious building Search for: Religious building + Arcade Dome of the Rock Mosque Dome of the Rock Mosque Dome of the Rock Mosque Dome of the Rock Mosque Dome of the Rock Mosque Arcade Religious building Search for: Religious building + Arcade Arcade Religious building San Vitale Search for: Religious building + Arcade Arcade Religious building Search for: Religious building + Arcade Arcade Religious building Search for: Religious building + Arcade Arcade San Vitale Religious building Search for: Religious building + Arcade Arcade San Vitale Religious building Search for: Religious building + Arcade Arcade
  44. 45. Dome Search for: Built work + Dome + Islamic Hagia Sophia Ritual San Vitale Search for: Religious building + Arcade Arcade Religious building Mosque Dome of the Rock Built work
  45. 46. http://dbpedia.org/page/Dome Search for: http:// www.freebase.com /view/architecture/building http:// dbpedia.org /page/Dome http://id.loc.gov/authorities/sh85006804 http://id.loc.gov/authorities/sh85114228 http://viaf.org/viaf/147047031/ Search for: http://sw.opencyc.org/2009/01/31/concept/en/ReligiousBuildng http://id.loc.gov/vocabulary/graphicMaterials/tgm000448 http://id.loc.gov/vocabulary/graphicMaterials/tgm000448 http://sw.opencyc.org/2009/01/31/concept/en/ReligiousBuilding http://id.loc.gov/authorities/sh85087470#concept http://viaf.org/viaf/134358038/ http://www.freebase.com/view/architecture/building http://en.wikipedia.org/wiki/File:Ayasofya-Innenansicht.jpg http://www.flickr.com/photos/cornelluniversitylibrary/3611150353/
  46. 47. Semantic Web Linked Data RDF
  47. 48. Meaning Logic Combination Re-use
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