Why Link?

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Presentation at Online Information 2011, Olympia London, 30th November 2011

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Why Link?

  1. 1. Why Link?Linking has value for data big and small Richard Wallis @rjw
  2. 2. Leading Semantic Web Technology
  3. 3. 40 Year Rich Metadata HeritageLeading Semantic Web Technology
  4. 4. Shared Innovation Ethos 40 Year Rich Metadata HeritageLeading Semantic Web Technology
  5. 5. kasabi.com
  6. 6. S tu ff a t in gR el
  7. 7. S tuff dtn iinggRFe la in?
  8. 8. S tuff dtn iinggRFe la in?
  9. 9. RelatingStufffFinding Stuf?
  10. 10. RelatingStufffFinding Stuf? Not a human-scale challenge...
  11. 11. Not a human-scale challenge...
  12. 12. Which ‘thing’ are you referencing ... Not a human-scale challenge...
  13. 13. Which ‘thing’ are you referencing ...
  14. 14. Feed of Weather/Buoy Data • Updated every 6 mins • Temp - Air/Water • Humidity • Wind - Speed/Direction • Atmospheric Pressurehttp://www.wunderground.com
  15. 15. Feed of Weather/Buoy Data • Updated every 6 mins • Temp - Air/Water • Humidity • Wind - Speed/Direction • Atmospheric Pressurehttp://www.wunderground.com
  16. 16. Feed of Weather/Buoy Data • Updated every 6 mins • Temp - Air/Water • Humidity • Wind - Speed/Direction • Atmospheric Pressurehttp://www.wunderground.com
  17. 17. Feed of Weather/Buoy Data • Updated every 6 mins • Temp - Air/Water • Humidity • Wind - Speed/Direction • Atmospheric Pressurehttp://www.wunderground.com
  18. 18. Linked Data
  19. 19. Linked DataBuilt on Semantic Web Standards
  20. 20. Linked Data Built on Semantic Web StandardsAll about identifying and linking things Thi ng
  21. 21. Identifying things
  22. 22. Identifying things
  23. 23. Identifying things 1969-059A
  24. 24. Identifying things 1969-059A spacecraft/1969-059A
  25. 25. Identifying things 1969-059A spacecraft/1969-059Anasa.dataincubator.org/spacecraft/1969-059A
  26. 26. Identifying things with URIs 1969-059A spacecraft/1969-059A nasa.dataincubator.org/spacecraft/1969-059Ahttp://nasa.dataincubator.org/spacecraft/1969-059A
  27. 27. Things have attributeshttp://nasa.dataincubator.org/spacecraft/1969-059A
  28. 28. Things have attributeshttp://nasa.dataincubator.org/spacecraft/1969-059A28801.0kg
  29. 29. Things have attributeshttp://nasa.dataincubator.org/spacecraft/1969-059A28801.0kgColumbia
  30. 30. Things have attributeshttp://nasa.dataincubator.org/spacecraft/1969-059A28801.0kgColumbiaApollo 11 CSMCSM-107United StatesCape CanaveralSaturn 5
  31. 31. http://nasa.dataincubator.org/spacecraft/1969-059A
  32. 32. http://nasa.dataincubator.org/spacecraft/1969-059A .../spacecraft/ 1969-059A
  33. 33. .../spacecraft/http://nasa.dataincubator.org/spacecraft/1969-059A 1969-059A
  34. 34. 28801.0 mass .../spacecraft/http://nasa.dataincubator.org/spacecraft/1969-059A 1969-059A
  35. 35. Apollo 11 CSM 28801.0 name mass .../spacecraft/http://nasa.dataincubator.org/spacecraft/1969-059A 1969-059A
  36. 36. Apollo 11 CSM Columbia name 28801.0 name mass .../spacecraft/http://nasa.dataincubator.org/spacecraft/1969-059A 1969-059A
  37. 37. Apollo 11 CSM Columbia name 28801.0 name mass .../spacecraft/http://nasa.dataincubator.org/spacecraft/1969-059A 1969-059A launch ../launch/1969-059
  38. 38. Apollo 11 CSM Columbia name 28801.0 name mass .../spacecraft/ 16 July 1969http://nasa.dataincubator.org/spacecraft/1969-059A 1969-059A launch date ../launch/1969-059
  39. 39. Apollo 11 CSM Columbia name 28801.0 name mass .../spacecraft/ 16 July 1969http://nasa.dataincubator.org/spacecraft/1969-059A 1969-059A launch date ../launch/1969-059 site ../cape canaveral
  40. 40. Apollo 11 CSM Columbia name 28801.0 name mass .../spacecraft/ 16 July 1969http://nasa.dataincubator.org/spacecraft/1969-059A 1969-059A launch date ../launch/1969-059 site ../cape canaveral lat N 28° 27 31
  41. 41. Apollo 11 CSM Columbia name 28801.0 name mass .../spacecraft/ 16 July 1969http://nasa.dataincubator.org/spacecraft/1969-059A 1969-059A launch date ../launch/1969-059 site ../cape canaveral lat N 28° 27 31 long W 80° 31 59
  42. 42. Apollo 11 CSM Columbia name 28801.0 name mass .../spacecraft/ 16 July 1969http://nasa.dataincubator.org/spacecraft/1969-059A 1969-059A launch date ../launch/1969-059<../1969-059A> mass 28801.0 . site<../1969-059A> name “Apollo 11 CSM” .<../1969-059A> name “Columbia” . ../cape<../1969-059A> launch <../launch/1969-059> . canaveral lat<../launch/1969-059> date 1969-07-16 .<../launch/1969-059> site <..site/capecanaveral> . N 28° 27 31 long<..site/capecanaveral> lat “N 28° 27 31” .<..site/capecanaveral> long “W 80° 31 59” . W 80° 31 59
  43. 43. RDF Apollo 11 CSM Columbia name 28801.0 name mass .../spacecraft/ 16 July 1969http://nasa.dataincubator.org/spacecraft/1969-059A 1969-059A launch date ../launch/1969-059<../1969-059A> mass 28801.0 . site<../1969-059A> name “Apollo 11 CSM” .<../1969-059A> name “Columbia” . ../cape<../1969-059A> launch <../launch/1969-059> . canaveral lat<../launch/1969-059> date 1969-07-16 .<../launch/1969-059> site <..site/capecanaveral> . N 28° 27 31 long<..site/capecanaveral> lat “N 28° 27 31” .<..site/capecanaveral> long “W 80° 31 59” . W 80° 31 59
  44. 44. RDF Triple
  45. 45. RDF TripleThing attribute value
  46. 46. RDF TripleThing property value
  47. 47. RDF TripleThing property valueThing property Thing
  48. 48. RDF Triple Thing property value Thing property Thing../person/A
  49. 49. RDF Triple Thing property value Thing property Thing../person/A hasParent
  50. 50. RDF Triple Thing property value Thing property Thing../person/A hasParent ../person/B
  51. 51. RDF Triple Thing property value Thing property Thing../person/A hasParent ../person/B../person/B
  52. 52. RDF Triple Thing property value Thing property Thing../person/A hasParent ../person/B../person/B name
  53. 53. RDF Triple Thing property value Thing property Thing../person/A hasParent ../person/B../person/B name “Eric”
  54. 54. RDF Triple Merging Thing property value Thing property Thing../person/A hasParent ../person/B ../person/B name “Eric”
  55. 55. RDF Triple Merging Thing property value Thing property Thing../person/A hasParent ../person/B name “Eric”
  56. 56. RDF Triple Merging
  57. 57. RDF Triple MergingThe same identifier in a different place is still identifying the same thing
  58. 58. Linked Data Principles
  59. 59. Linked Data Principles1. Use URIs as names for things
  60. 60. Linked Data Principles1. Use URIs as names for things2. Use HTTP URIs so people can look up those names
  61. 61. Linked Data Principles1. Use URIs as names for things2. Use HTTP URIs so people can look up those names3. When someone looks up a URI, provide useful information, using the standards - RDF
  62. 62. 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 moreTim Berners-Lee - 2006
  63. 63. Feed of Weather/Buoy Data • Updated every 6mins • Temp - Air/Water • Humidity • Wind - Speed/Direction • Atmospheric Pressurehttp://www.wunderground.com
  64. 64. http://dbpedia.org/resource/Boston Feed of Weather/Buoy Data • Updated every 6mins • Temp - Air/Water • Humidity • Wind - Speed/Direction • Atmospheric Pressure http://www.wunderground.com
  65. 65. http://dbpedia.org/resource/Bostonhttp://dbpedia.org/resource/Boston Feed of Weather/Buoy Data • Updated every 6mins • Temp - Air/Water • Humidity • Wind - Speed/Direction • Atmospheric Pressure http://www.wunderground.com
  66. 66. http://dbpedia.org/resource/Bostonhttp://dbpedia.org/resource/Boston%2C_Lincolnshire http://dbpedia.org/resource/Boston http://dbpedia.org/resource/Boston%2C_Lincolnshire Feed of Weather/Buoy Data • Updated every 6mins • Temp - Air/Water • Humidity • Wind - Speed/Direction • Atmospheric Pressure http://www.wunderground.com
  67. 67. Linked Data example
  68. 68. Linked Data example
  69. 69. Linked Data example
  70. 70. Linked Data example
  71. 71. Linked Data example
  72. 72. Linked Data example
  73. 73. Linked DataWhat do I need to know?
  74. 74. Linked Data What do I need to know?• Globally distributed / adopted
  75. 75. Linked Data What do I need to know?• Globally distributed / adopted• Still evolving
  76. 76. Linked Data What do I need to know?• Globally distributed / adopted• Still evolving• Built on Web standards
  77. 77. Linked Data What do I need to know?• Globally distributed / adopted• Still evolving• Built on Web standards• Low barrier to data
  78. 78. Linked Data What do I need to know?• Globally distributed / adopted• Still evolving• Built on Web standards• Low barrier to [other people’s] data
  79. 79. Linked Data What do I need to know?• Globally distributed / adopted• Still evolving• Built on Web standards• Low barrier to [other people’s] data• Integration without ‘need’ for coordination
  80. 80. Linked Data What do I need to know?• Globally distributed / adopted• Still evolving• Built on Web standards• Low barrier to [other people’s] data• Integration without ‘need’ for coordination• Follow-your-nose discovery/navigation
  81. 81. Linked DataWhat do I need to know?
  82. 82. Linked Data What do I need to know?• Not all Linked Data is Open
  83. 83. Linked Data What do I need to know?• Not all Linked Data is Open• Not all Open Data is Linked
  84. 84. Linked Data What do I need to know?• Not all Linked Data is Open• Not all Open Data is Linked• All your data does not need to be open
  85. 85. Linked Data What do I need to know?• Not all Linked Data is Open• Not all Open Data is Linked• All your data does not need to be open• Linking your [open] data liberates it’s value
  86. 86. Linked Data
  87. 87. Linked DataHow much do I need to do?• As much as practicable
  88. 88. Linked DataHow much do I need to do?• As much as practicable• Identify your ‘things’ and link to ...
  89. 89. Linked DataHow much do I need to do?• As much as practicable• Identify your ‘things’ and link to ... - add value to your data
  90. 90. Linked DataHow much do I need to do?• As much as practicable• Identify your ‘things’ and link to ... - add value to your data - help others discover
  91. 91. Linked Data
  92. 92. Linked DataWho is doing it?
  93. 93. Linked DataWho is doing it?
  94. 94. Linked DataWho is doing it?
  95. 95. Linked DataWho is doing it?
  96. 96. Why Link?Linking has value for data big and small Richard Wallis @rjw
  97. 97. Why Link?Linking has value for data big and small Richard Wallis @rjw http://slideshare.net/rjw

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