The Simple Power of the Link - ELAG 2014 Workshop

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Slides used to introduce Linked Data concepts in the ELAG 2014 Workshop "The Power of Sharing Linked Data" - Bath University, UK 10/11 June 2014

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The Simple Power of the Link - ELAG 2014 Workshop

  1. 1. Richard Wallis Technology Evangelist
  2. 2. Richard Wallis Technology Evangelist Linked Data
  3. 3. Richard Wallis Technology Evangelist The Simple Power Of The Link
  4. 4. Web?Semantic
  5. 5. Web?The
  6. 6. Web? HTML The
  7. 7. Web? URL HTML The
  8. 8. Web? http URL HTML The
  9. 9. Web? http URL Flash Javascript DOM CSS Ajax SEO Microformats RDFa JQuery HTML5 CSS3 XML JSON HTML The
  10. 10. Web? http URLHTML The
  11. 11. Web? HTML http URL
  12. 12. Web? HTML http URL Text text text text text link text. Text, text text text, text. Text text - text text - text text text. Document
  13. 13. Web? HTML http URL Text text text text text link text. Text, text text text, text. Text text - text text - text text text. Text text text text text.Text: • link • link Text text, text. Text text - link text - text text. Document Document
  14. 14. Web? HTML http URL Text text text text text link text. Text, text text text, text. Text text - text text - text text text. Text text text text text.Text: • link • link Text text, text. Text text - link text - text text. Document Document
  15. 15. Web? HTML http URL Text text text text text link text. Text, text text text, text. Text text - text text - text text text. Text text text text text.Text: • link • link Text text, text. Text text - link text - text text. Document Document http://example.com/page1
  16. 16. Web? HTML http URL Text text text text text link text. Text, text text text, text. Text text - text text - text text text. Text text text text text.Text: • link • link Text text, text. Text text - link text - text text. Document Document http://example.com/page1 http://eg.co.uk/list
  17. 17. Web? http://example.com/page1 http://eg.co.uk/list Link
  18. 18. Web? Linking at it’s core http://www.flickr.com/photos/leapkye/4407661949 The
  19. 19. Web? Linking at it’s core http://www.flickr.com/photos/leapkye/4407661949 The Powerful
  20. 20. Web? ©AllPosters.com Linking at it’s core link The Powerful
  21. 21. Web The
  22. 22. Web The Semantic
  23. 23. Web The Semantic Got a bad press
  24. 24. Flying CarsTechnology Ai Web The Semantic Got a bad press
  25. 25. Linked Data Linked Data
  26. 26. Linked Data Built on Semantic Web Standards Linked Data
  27. 27. Linked Data Built on Semantic Web Standards All about identifying and linking things Linked Data Thing
  28. 28. Identifying things
  29. 29. Identifying things
  30. 30. Identifying things 1969-059A
  31. 31. Identifying things spacecraft/1969-059A 1969-059A
  32. 32. Identifying things spacecraft/1969-059A nasa.dataincubator.org/spacecraft/1969-059A 1969-059A
  33. 33. Identifying things spacecraft/1969-059A nasa.dataincubator.org/spacecraft/1969-059A http://nasa.dataincubator.org/spacecraft/1969-059A 1969-059A
  34. 34. Identifying things spacecraft/1969-059A nasa.dataincubator.org/spacecraft/1969-059A http://nasa.dataincubator.org/spacecraft/1969-059A 1969-059A with URIs
  35. 35. Things have attributes http://nasa.dataincubator.org/spacecraft/1969-059A
  36. 36. Things have attributes http://nasa.dataincubator.org/spacecraft/1969-059A 28801.0kg
  37. 37. Things have attributes http://nasa.dataincubator.org/spacecraft/1969-059A 28801.0kg Columbia
  38. 38. Things have attributes http://nasa.dataincubator.org/spacecraft/1969-059A 28801.0kg Columbia Apollo 11 CSM CSM-107 United States Cape Canaveral Saturn 5
  39. 39. http://nasa.dataincubator.org/spacecraft/1969-059A
  40. 40. http://nasa.dataincubator.org/spacecraft/1969-059A .../1969-059A
  41. 41. http://nasa.dataincubator.org/spacecraft/1969-059A mass 28801.0 .../1969-059A
  42. 42. http://nasa.dataincubator.org/spacecraft/1969-059A mass 28801.0 Apollo 11 CSM name .../1969-059A
  43. 43. http://nasa.dataincubator.org/spacecraft/1969-059A mass 28801.0 Apollo 11 CSM Columbia name name .../1969-059A
  44. 44. http://nasa.dataincubator.org/spacecraft/1969-059A mass 28801.0 Apollo 11 CSM Columbia name name .../1969-059A prefName
  45. 45. http://nasa.dataincubator.org/spacecraft/1969-059A mass 28801.0 Apollo 11 CSM Columbia name name launch .../1969-059A ../launch/ 1969-059 prefName
  46. 46. http://nasa.dataincubator.org/spacecraft/1969-059A mass 28801.0 Apollo 11 CSM Columbia name name launch 16 July 1969 date .../1969-059A ../launch/ 1969-059 prefName
  47. 47. http://nasa.dataincubator.org/spacecraft/1969-059A mass 28801.0 Apollo 11 CSM Columbia name name launch 16 July 1969 date site .../1969-059A ../launch/ 1969-059 Cape Canaveral prefName
  48. 48. http://nasa.dataincubator.org/spacecraft/1969-059A mass 28801.0 Apollo 11 CSM Columbia name name launch 16 July 1969 date site N 28° 27' 31'' lat .../1969-059A ../launch/ 1969-059 Cape Canaveral prefName
  49. 49. http://nasa.dataincubator.org/spacecraft/1969-059A mass 28801.0 Apollo 11 CSM Columbia name name launch 16 July 1969 date site N 28° 27' 31'' W 80° 31' 59'' lat long .../1969-059A ../launch/ 1969-059 Cape Canaveral prefName
  50. 50. http://nasa.dataincubator.org/spacecraft/1969-059A mass 28801.0 Apollo 11 CSM Columbia name name launch 16 July 1969 date site RDF N 28° 27' 31'' W 80° 31' 59'' lat long .../1969-059A ../launch/ 1969-059 Cape Canaveral prefName
  51. 51. http://nasa.dataincubator.org/spacecraft/1969-059A mass 28801.0 Apollo 11 CSM Columbia name name launch 16 July 1969 date site RDF N 28° 27' 31'' W 80° 31' 59'' lat long .../1969-059A ../launch/ 1969-059 Cape Canaveral <../1969-059A> mass 28801.0 . <../1969-059A> name “Apollo 11 CSM” . <../1969-059A> name “Columbia” . <../1969-059A> prefName “Columbia” . <../1969-059A> launch <../launch/1969-059> . <../launch/1969-059> date 1969-07-16 . <../launch/1969-059> site <..site/capecanaveral> . <..site/capecanaveral> lat “N 28° 27' 31''” . <..site/capecanaveral> long “W 80° 31' 59''” . prefName
  52. 52. RDF Triple
  53. 53. RDF Triple Thing attribute value
  54. 54. property RDF Triple Thing value
  55. 55. property RDF Triple Thing value Thing property Thing
  56. 56. property RDF Triple Thing value Thing property Thing ../person/A
  57. 57. property RDF Triple Thing value Thing property Thing ../person/A hasParent
  58. 58. property RDF Triple Thing value Thing property Thing ../person/B../person/A hasParent
  59. 59. property RDF Triple Thing value Thing property Thing ../person/B ../person/B ../person/A hasParent
  60. 60. property RDF Triple Thing value Thing property Thing ../person/B name../person/B ../person/A hasParent
  61. 61. property “Eric” RDF Triple Thing value Thing property Thing ../person/B name../person/B ../person/A hasParent
  62. 62. property “Eric” RDF Triple Thing value Thing property Thing ../person/B name../person/B ../person/A hasParent
  63. 63. property “Eric” RDF Triple Thing value Thing property Thing name../person/B../person/A hasParent Merging
  64. 64. RDF Triple Merging
  65. 65. RDF Triple Merging The same identifier in a different place still identifies the same thing
  66. 66. Linked Data Principles Linked Data Principles
  67. 67. Linked Data Principles Linked Data Principles 1. Use URIs as names for things
  68. 68. Linked Data Principles Linked Data Principles 1. Use URIs as names for things 2. Use HTTP URIs so people can look up those names
  69. 69. Linked Data Principles Linked Data Principles 1. Use URIs as names for things 2. Use HTTP URIs so people can look up those names 3. When someone looks up a URI, provide useful information, using the standards - RDF
  70. 70. Linked Data Principles Linked Data Principles 1. Use URIs as names for things 2. Use HTTP URIs so people can look up those names 3. When someone looks up a URI, provide useful information, using the standards - RDF 4. Include links to other URIs, so that they can discover more Tim Berners-Lee - 2006
  71. 71. Data Open and/or Linked Data Open and/or Linked
  72. 72. Data Open and/or Linked Paul Walk - UKLON 1. Data can be open, while not being linked 2. Data can be linked, while not being open 3. Data which is both open and linked is increasingly viable 4. The Semantic Web can only function with data which is both open and linked Data Open and/or Linked
  73. 73. Linked Data Tools Storage! File System / Web Server! Relational Database - output mapped to RDF! D2RQ! Graph Data Store! ! Triple Store (SPARQL Endpoint)! Native graph store! SPARQL Query Language! Pattern matching! Not good at strings! SQL-like syntax!

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