Linked Data     Under the hood                  Tim Hodson           Technical Consultant                  @timhodson     ...
Where do I  start?
dprr iel   rreP o Iif e ySe Aud g me    s Fpe       eRfrQ       Ptlocen   le     Durl re       o     to ertL ce    nAn    ...
le    res                        trip           our                     I                  F              ce              ...
sh                   bli                 Pu                         e    rt                      nv                 Co    ...
sh                   bli                 Pu                         e    rt                      nv                 Co    ...
Simple Process Mo   de   l
Look at your data       http://www.flickr.com/photos/pss/4876189045/
What am Ilooking for?
http://www.flickr.com/photos/striatic/729822
Simple Process Mo   de   l
Simple Process        Na Mo        me   de   l
identifier
identifier      thing
identifier      thing
identifier      thing             1969-059A
identifier      thing                       1969-059A             spacecraft/1969-059A
identifier      thing                                       1969-059A                             spacecraft/1969-059A    ...
identifier        thing                                           1969-059A                                spacecraft/1969...
identifier28801.0kg                thing                                                   1969-059A                      ...
identifier28801.0kgColumbiaApollo 11 CSMCSM-107                thing                                                   196...
identifier28801.0kgColumbiaApollo 11 CSMCSM-107                    thingUnited States                                     ...
identifier28801.0kgColumbiaApollo 11 CSMCSM-107                    thingUnited StatesCape Canaveral                       ...
identifier28801.0kgColumbiaApollo 11 CSMCSM-107                    thingUnited StatesCape Canaveral                       ...
identifier28801.0kgColumbiaApollo 11 CSMCSM-107                    thingUnited StatesCape Canaveral                       ...
identifier
identifier         .../1969-059A
identifier28801.0          mass .../1969-059A
identifier          Apollo 11 CSM28801.0                      name             mass .../1969-059A
identifier          Apollo 11 CSM           Columbia                      name28801.0                               name  ...
identifier          Apollo 11 CSM            Columbia                      name28801.0                                 nam...
identifier          Apollo 11 CSM            Columbia                      name28801.0                                 nam...
identifier          Apollo 11 CSM            Columbia                      name28801.0                                 nam...
identifier          Apollo 11 CSM            Columbia                      name28801.0                                 nam...
identifier          Apollo 11 CSM            Columbia                      name28801.0                                 nam...
identifier             Apollo 11 CSM                 Columbia                             name 28801.0                    ...
That all looks a  bit scary!
Simple format        An easy structure for capturing data
Simple format           An easy structure for capturing data                property subject                             v...
Simple format           An easy structure for capturing data                property subject                             v...
Simple format           An easy structure for capturing data                 property subject                             ...
Simple format              An easy structure for capturing data                    property   subject                     ...
Simple format               An easy structure for capturing data                     property   subject                   ...
Simple format               An easy structure for capturing data                     property   subject                   ...
Simple format               An easy structure for capturing data                     property   subject                   ...
Simple format               An easy structure for capturing data                     property   subject                   ...
Simple format               An easy structure for capturing data                     property   subject                   ...
Simple format               An easy structure for capturing data                     property   subject                   ...
Simple format               An easy structure for capturing data                     property   subject                   ...
RDF Triple Merging
RDF Triple            MergingThe same identifier in a different  place is still the same thing
Simple Process        Na Mo        me   de   l
beSimple Process                         ri                      sc                 De                      me            ...
Properties and Classes
Properties and ClassesProperties?
Properties and ClassesProperties?Classes?
Properties and ClassesProperties?     they describe why something is linkedClasses?
Properties and ClassesProperties?     they describe why something is linkedClasses?     they group similarly typed things ...
How do I knowwhat terms to    use?
Tools
Tools• prefix.cc
Tools• prefix.cc  - namespace lookup
Tools• prefix.cc  - namespace lookup• schemapedia.com, schemacache.com
Tools• prefix.cc  - namespace lookup• schemapedia.com, schemacache.com  - vocabulary search
Tools• prefix.cc  - namespace lookup• schemapedia.com, schemacache.com  - vocabulary search• sindice.com, ckan.net, LOD Di...
Tools• prefix.cc  - namespace lookup• schemapedia.com, schemacache.com  - vocabulary search• sindice.com, ckan.net, LOD Di...
Tools• prefix.cc  - namespace lookup• schemapedia.com, schemacache.com  - vocabulary search• sindice.com, ckan.net, LOD Di...
Tools• prefix.cc  - namespace lookup• schemapedia.com, schemacache.com  - vocabulary search• sindice.com, ckan.net, LOD Di...
Why don’t Ijust use my own   terms for     things?
Add Value   Link to external sources
beSimple Process                         ri                      sc                 De                      me            ...
e    rt                      nv                 Co                              beSimple Process                         r...
Conversion
Conversion• Database / spreadsheet export
Conversion• Database / spreadsheet export  - Script/program convert
Conversion• Database / spreadsheet export  - Script/program convert• Pull existing Linked Data from sites
Conversion• Database / spreadsheet export  - Script/program convert• Pull existing Linked Data from sites  - URI matching
Conversion• Database / spreadsheet export  - Script/program convert• Pull existing Linked Data from sites  - URI matching ...
Conversion• Database / spreadsheet export  - Script/program convert• Pull existing Linked Data from sites  - URI matching ...
Conversion• Database / spreadsheet export  - Script/program convert• Pull existing Linked Data from sites  - URI matching ...
Conversion• Database / spreadsheet export  - Script/program convert• Pull existing Linked Data from sites  - URI matching ...
What does mydata look like    now?
RDF Flavours                                  16 July 1969                                date               ../launch:   ...
RDF Flavours• RDF/XML                         16 July 1969                                date               ../launch:   ...
RDF Flavours• RDF/XML                                  16 July 1969   Machine to machine                                  ...
RDF Flavours• RDF/XML                                    16 July 1969     Machine to machine• N-Triples                   ...
RDF Flavours• RDF/XML                                    16 July 1969     Machine to machine• N-Triples                   ...
RDF Flavours• RDF/XML                                    16 July 1969     Machine to machine• N-Triples                   ...
RDF Flavours• RDF/XML                                    16 July 1969     Machine to machine• N-Triples                   ...
RDF Flavours• RDF/XML                                    16 July 1969     Machine to machine• N-Triples                   ...
RDF Flavours• RDF/XML                                    16 July 1969     Machine to machine• N-Triples                   ...
RDF Flavours• RDF/XML                                    16 July 1969     Machine to machine• N-Triples                   ...
e    rt                      nv                 Co                              beSimple Process                         r...
sh                   bli                 Pu                         e    rt                      nv                 Co    ...
Put it on a web server                         http://www.flickr.com/photos/traftery/4773457853
SPARQL
SPARQL   SPARQL RDF Query Language
SPARQL     SPARQL RDF Query Language • Triple pattern matching
SPARQL     SPARQL RDF Query Language • Triple pattern matching                             16 July 1969                   ...
SPARQL     SPARQL RDF Query Language • Triple pattern matching  - uses Turtle                              16 July 1969   ...
SPARQL     SPARQL RDF Query Language • Triple pattern matching  - uses Turtle
SPARQL     SPARQL RDF Query Language • Triple pattern matching  - uses Turtle • Requires a SPARQL-endpoint
SPARQL     SPARQL RDF Query Language • Triple pattern matching  - uses Turtle • Requires a SPARQL-endpoint • Backed by a T...
SPARQL     SPARQL RDF Query Language • Triple pattern matching  - uses Turtle • Requires a SPARQL-endpoint • Backed by a T...
SPARQL     SPARQL RDF Query Language • Triple pattern matching  - uses Turtle • Requires a SPARQL-endpoint • Backed by a T...
SPARQL     SPARQL RDF Query Language • Triple pattern matching  - uses Turtle • Requires a SPARQL-endpoint • Backed by a T...
eh?
Linked Data Views
Linked Data Views    HTML based views of your data
Linked Data Views    HTML based views of your data  • Linked Data API
Linked Data Views    HTML based views of your data  • Linked Data API   - Puelia
Linked Data Views    HTML based views of your data  • Linked Data API   - Puelia   - Elda
Linked Data Views    HTML based views of your data  • Linked Data API   - Puelia   - Elda  • Bespoke Views
Linked Data Views    HTML based views of your data  • Linked Data API   - Puelia   - Elda  • Bespoke Views   - Hand crafte...
Linked Data Views    HTML based views of your data  • Linked Data API   - Puelia   - Elda  • Bespoke Views   - Hand crafte...
Linked Data Views    HTML based views of your data  • Linked Data API   - Puelia   - Elda  • Bespoke Views   - Hand crafte...
Linked Data Views    HTML based views of your data  • Linked Data API   - Puelia   - Elda  • Bespoke Views   - Hand crafte...
Linked Data Views    HTML based views of your data  • Linked Data API   - Puelia   - Elda  • Bespoke Views   - Hand crafte...
Links
Links        Follow your nose
Links        Follow your nose
Is RDF the onlyway to do Linked     Data?
Web Standards
But I just wantto let people use     my data.
http://www.flickr.com/photos/jwilde/3499946512
Accessing your Data                      http://www.flickr.com/photos/jwilde/3499946512
Accessing your Data      Dat a API                      http://www.flickr.com/photos/jwilde/3499946512
Accessing your Data}All have APIs          Dat a API                          http://www.flickr.com/photos/jwilde/3499946512
Accessing your Data}All have APIsAll different!          Dat a API                          http://www.flickr.com/photos/j...
Summary        Na                             Co                 De Mo                                       Pu           ...
Summary            Na                                   Co                        De Mo                                   ...
le URI   DFtrip R        http://www.flickr.com/photos/thienzieyung/5147954561
D FR                 I          U     R                      rip le                   t       http://www.flickr.com/photos...
http://consulting.talis.com
Linked Data Under the Hood
Linked Data Under the Hood
Linked Data Under the Hood
Linked Data Under the Hood
Linked Data Under the Hood
Linked Data Under the Hood
Linked Data Under the Hood
Linked Data Under the Hood
Linked Data Under the Hood
Linked Data Under the Hood
Linked Data Under the Hood
Linked Data Under the Hood
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Linked Data Under the Hood

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Presentation by Tim Hodson at the Talis Event 'The Web's Influence on Your Data' in London - 20th September 2011

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Linked Data Under the Hood

  1. 1. Linked Data Under the hood Tim Hodson Technical Consultant @timhodson #talisldod
  2. 2. Where do I start?
  3. 3. dprr iel rreP o Iif e ySe Aud g me s Fpe eRfrQ Ptlocen le Durl re o to ertL ce nAn rg Rmode trip y i ing http://www.flickr.com/photos/thienzieyung/5147954561
  4. 4. le res trip our I F ce P RD A o lo gy o ntSPAR Q L pro l pe d e der rtymo me efe e r ren ti fi ce rg n url ing e id http://www.flickr.com/photos/thienzieyung/5147954561
  5. 5. sh bli Pu e rt nv Co beSimple Process ri sc De me Na l de Mo
  6. 6. sh bli Pu e rt nv Co beSimple Process ri sc De me Na l de Mo
  7. 7. Simple Process Mo de l
  8. 8. Look at your data http://www.flickr.com/photos/pss/4876189045/
  9. 9. What am Ilooking for?
  10. 10. http://www.flickr.com/photos/striatic/729822
  11. 11. Simple Process Mo de l
  12. 12. Simple Process Na Mo me de l
  13. 13. identifier
  14. 14. identifier thing
  15. 15. identifier thing
  16. 16. identifier thing 1969-059A
  17. 17. identifier thing 1969-059A spacecraft/1969-059A
  18. 18. identifier thing 1969-059A spacecraft/1969-059A nasa.dataincubator.org/spacecraft/1969-059A
  19. 19. identifier thing 1969-059A spacecraft/1969-059A nasa.dataincubator.org/spacecraft/1969-059A http://nasa.dataincubator.org/spacecraft/1969-059A
  20. 20. identifier28801.0kg thing 1969-059A spacecraft/1969-059A nasa.dataincubator.org/spacecraft/1969-059A http://nasa.dataincubator.org/spacecraft/1969-059A
  21. 21. identifier28801.0kgColumbiaApollo 11 CSMCSM-107 thing 1969-059A spacecraft/1969-059A nasa.dataincubator.org/spacecraft/1969-059A http://nasa.dataincubator.org/spacecraft/1969-059A
  22. 22. identifier28801.0kgColumbiaApollo 11 CSMCSM-107 thingUnited States 1969-059A spacecraft/1969-059A nasa.dataincubator.org/spacecraft/1969-059A http://nasa.dataincubator.org/spacecraft/1969-059A
  23. 23. identifier28801.0kgColumbiaApollo 11 CSMCSM-107 thingUnited StatesCape Canaveral 1969-059A spacecraft/1969-059A nasa.dataincubator.org/spacecraft/1969-059A http://nasa.dataincubator.org/spacecraft/1969-059A
  24. 24. identifier28801.0kgColumbiaApollo 11 CSMCSM-107 thingUnited StatesCape Canaveral 1969-059ASaturn 5 spacecraft/1969-059A nasa.dataincubator.org/spacecraft/1969-059A http://nasa.dataincubator.org/spacecraft/1969-059A
  25. 25. identifier28801.0kgColumbiaApollo 11 CSMCSM-107 thingUnited StatesCape Canaveral 1969-059ASaturn 5 spacecraft/1969-059A nasa.dataincubator.org/spacecraft/1969-059A http://nasa.dataincubator.org/spacecraft/1969-059A
  26. 26. identifier
  27. 27. identifier .../1969-059A
  28. 28. identifier28801.0 mass .../1969-059A
  29. 29. identifier Apollo 11 CSM28801.0 name mass .../1969-059A
  30. 30. identifier Apollo 11 CSM Columbia name28801.0 name mass .../1969-059A
  31. 31. identifier Apollo 11 CSM Columbia name28801.0 name mass .../1969-059A launch ../launch: 1969-059
  32. 32. identifier Apollo 11 CSM Columbia name28801.0 name mass .../1969-059A 16 July 1969 launch date ../launch: 1969-059
  33. 33. identifier Apollo 11 CSM Columbia name28801.0 name mass .../1969-059A 16 July 1969 launch date ../launch: 1969-059 site Cape Canaveral
  34. 34. identifier Apollo 11 CSM Columbia name28801.0 name mass .../1969-059A 16 July 1969 launch date ../launch: 1969-059 site Cape Canaveral lat N 28° 27 31
  35. 35. identifier Apollo 11 CSM Columbia name28801.0 name mass .../1969-059A 16 July 1969 launch date ../launch: 1969-059 site Cape Canaveral lat N 28° 27 31 long W 80° 31 59
  36. 36. identifier Apollo 11 CSM Columbia name 28801.0 name mass .../1969-059A 16 July 1969 launch date ../launch: 1969-059<../1969-059A> mass 28801.0 .<../1969-059A> name “Apollo 11 CSM” . site<../1969-059A> name “Columbia” .<../1969-059A> launch <../launch/1969-059> .<../launch/1969-059> date 1969-07-16 . Cape<../launch/1969-059> site <..site/capecanaveral> . Canaveral lat<..site/capecanaveral> lat “N 28° 27 31” .<..site/capecanaveral> long “W 80° 31 59” . N 28° 27 31 long W 80° 31 59
  37. 37. That all looks a bit scary!
  38. 38. Simple format An easy structure for capturing data
  39. 39. Simple format An easy structure for capturing data property subject value
  40. 40. Simple format An easy structure for capturing data property subject value property thing thing
  41. 41. Simple format An easy structure for capturing data property subject value property thing thingSimple merging An easy way to bung stuff together
  42. 42. Simple format An easy structure for capturing data property subject value property thing thingSimple merging An easy way to bung stuff together../person/A
  43. 43. Simple format An easy structure for capturing data property subject value property thing thingSimple merging An easy way to bung stuff together../person/A hasParent
  44. 44. Simple format An easy structure for capturing data property subject value property thing thingSimple merging An easy way to bung stuff together../person/A hasParent ../person/B
  45. 45. Simple format An easy structure for capturing data property subject value property thing thingSimple merging An easy way to bung stuff together../person/A hasParent ../person/B../person/B
  46. 46. Simple format An easy structure for capturing data property subject value property thing thingSimple merging An easy way to bung stuff together../person/A hasParent ../person/B../person/B name
  47. 47. Simple format An easy structure for capturing data property subject value property thing thingSimple merging An easy way to bung stuff together../person/A hasParent ../person/B../person/B name “Eric”
  48. 48. Simple format An easy structure for capturing data property subject value property thing thingSimple merging An easy way to bung stuff together../person/A hasParent ../person/B ../person/B name “Eric”
  49. 49. Simple format An easy structure for capturing data property subject value property thing thingSimple merging An easy way to bung stuff together../person/A hasParent ../person/B name “Eric”
  50. 50. RDF Triple Merging
  51. 51. RDF Triple MergingThe same identifier in a different place is still the same thing
  52. 52. Simple Process Na Mo me de l
  53. 53. beSimple Process ri sc De me Na l de Mo
  54. 54. Properties and Classes
  55. 55. Properties and ClassesProperties?
  56. 56. Properties and ClassesProperties?Classes?
  57. 57. Properties and ClassesProperties? they describe why something is linkedClasses?
  58. 58. Properties and ClassesProperties? they describe why something is linkedClasses? they group similarly typed things together
  59. 59. How do I knowwhat terms to use?
  60. 60. Tools
  61. 61. Tools• prefix.cc
  62. 62. Tools• prefix.cc - namespace lookup
  63. 63. Tools• prefix.cc - namespace lookup• schemapedia.com, schemacache.com
  64. 64. Tools• prefix.cc - namespace lookup• schemapedia.com, schemacache.com - vocabulary search
  65. 65. Tools• prefix.cc - namespace lookup• schemapedia.com, schemacache.com - vocabulary search• sindice.com, ckan.net, LOD Diagram
  66. 66. Tools• prefix.cc - namespace lookup• schemapedia.com, schemacache.com - vocabulary search• sindice.com, ckan.net, LOD Diagram - identify data sets to link with
  67. 67. Tools• prefix.cc - namespace lookup• schemapedia.com, schemacache.com - vocabulary search• sindice.com, ckan.net, LOD Diagram - identify data sets to link with• Kasabi Linked Data Marketplace
  68. 68. Tools• prefix.cc - namespace lookup• schemapedia.com, schemacache.com - vocabulary search• sindice.com, ckan.net, LOD Diagram - identify data sets to link with• Kasabi Linked Data Marketplace - access other data sources
  69. 69. Why don’t Ijust use my own terms for things?
  70. 70. Add Value Link to external sources
  71. 71. beSimple Process ri sc De me Na l de Mo
  72. 72. e rt nv Co beSimple Process ri sc De me Na l de Mo
  73. 73. Conversion
  74. 74. Conversion• Database / spreadsheet export
  75. 75. Conversion• Database / spreadsheet export - Script/program convert
  76. 76. Conversion• Database / spreadsheet export - Script/program convert• Pull existing Linked Data from sites
  77. 77. Conversion• Database / spreadsheet export - Script/program convert• Pull existing Linked Data from sites - URI matching
  78. 78. Conversion• Database / spreadsheet export - Script/program convert• Pull existing Linked Data from sites - URI matching - Linksets
  79. 79. Conversion• Database / spreadsheet export - Script/program convert• Pull existing Linked Data from sites - URI matching - Linksets• Google Refine
  80. 80. Conversion• Database / spreadsheet export - Script/program convert• Pull existing Linked Data from sites - URI matching - Linksets• Google Refine - Facet analysis
  81. 81. Conversion• Database / spreadsheet export - Script/program convert• Pull existing Linked Data from sites - URI matching - Linksets• Google Refine - Facet analysis - Reconciliation API
  82. 82. What does mydata look like now?
  83. 83. RDF Flavours 16 July 1969 date ../launch: 1969-059 Cape Canaveral
  84. 84. RDF Flavours• RDF/XML 16 July 1969 date ../launch: 1969-059 Cape Canaveral
  85. 85. RDF Flavours• RDF/XML 16 July 1969 Machine to machine date ../launch: 1969-059 Cape Canaveral
  86. 86. RDF Flavours• RDF/XML 16 July 1969 Machine to machine• N-Triples date ../launch: 1969-059 Cape Canaveral
  87. 87. RDF Flavours• RDF/XML 16 July 1969 Machine to machine• N-Triples date Processing ../launch: 1969-059 Cape Canaveral
  88. 88. RDF Flavours• RDF/XML 16 July 1969 Machine to machine• N-Triples date Processing ../launch:• Turtle 1969-059 Cape Canaveral
  89. 89. RDF Flavours• RDF/XML 16 July 1969 Machine to machine• N-Triples date Processing ../launch:• Turtle 1969-059 Human readable Cape Canaveral
  90. 90. RDF Flavours• RDF/XML 16 July 1969 Machine to machine• N-Triples date Processing ../launch:• Turtle 1969-059 Human readable• RDFa Cape Canaveral
  91. 91. RDF Flavours• RDF/XML 16 July 1969 Machine to machine• N-Triples date Processing ../launch:• Turtle 1969-059 Human readable• RDFa Cape Html embedded Canaveral
  92. 92. RDF Flavours• RDF/XML 16 July 1969 Machine to machine• N-Triples date Processing ../launch:• Turtle 1969-059 Human readable• RDFa Cape Html embedded Canaveral All valid RDF
  93. 93. e rt nv Co beSimple Process ri sc De me Na l de Mo
  94. 94. sh bli Pu e rt nv Co beSimple Process ri sc De me Na l de Mo
  95. 95. Put it on a web server http://www.flickr.com/photos/traftery/4773457853
  96. 96. SPARQL
  97. 97. SPARQL SPARQL RDF Query Language
  98. 98. SPARQL SPARQL RDF Query Language • Triple pattern matching
  99. 99. SPARQL SPARQL RDF Query Language • Triple pattern matching 16 July 1969 date ../launch: 1969-059 Cape Canaveral
  100. 100. SPARQL SPARQL RDF Query Language • Triple pattern matching - uses Turtle 16 July 1969 date ../launch: 1969-059 Cape Canaveral
  101. 101. SPARQL SPARQL RDF Query Language • Triple pattern matching - uses Turtle
  102. 102. SPARQL SPARQL RDF Query Language • Triple pattern matching - uses Turtle • Requires a SPARQL-endpoint
  103. 103. SPARQL SPARQL RDF Query Language • Triple pattern matching - uses Turtle • Requires a SPARQL-endpoint • Backed by a Triple Store
  104. 104. SPARQL SPARQL RDF Query Language • Triple pattern matching - uses Turtle • Requires a SPARQL-endpoint • Backed by a Triple Store - Local hosted
  105. 105. SPARQL SPARQL RDF Query Language • Triple pattern matching - uses Turtle • Requires a SPARQL-endpoint • Backed by a Triple Store - Local hosted - Hosted
  106. 106. SPARQL SPARQL RDF Query Language • Triple pattern matching - uses Turtle • Requires a SPARQL-endpoint • Backed by a Triple Store - Local hosted - Hosted - Managed Service - Talis
  107. 107. eh?
  108. 108. Linked Data Views
  109. 109. Linked Data Views HTML based views of your data
  110. 110. Linked Data Views HTML based views of your data • Linked Data API
  111. 111. Linked Data Views HTML based views of your data • Linked Data API - Puelia
  112. 112. Linked Data Views HTML based views of your data • Linked Data API - Puelia - Elda
  113. 113. Linked Data Views HTML based views of your data • Linked Data API - Puelia - Elda • Bespoke Views
  114. 114. Linked Data Views HTML based views of your data • Linked Data API - Puelia - Elda • Bespoke Views - Hand crafted webpages
  115. 115. Linked Data Views HTML based views of your data • Linked Data API - Puelia - Elda • Bespoke Views - Hand crafted webpages • Backed by a Triple Store
  116. 116. Linked Data Views HTML based views of your data • Linked Data API - Puelia - Elda • Bespoke Views - Hand crafted webpages • Backed by a Triple Store - Local hosted
  117. 117. Linked Data Views HTML based views of your data • Linked Data API - Puelia - Elda • Bespoke Views - Hand crafted webpages • Backed by a Triple Store - Local hosted - Hosted
  118. 118. Linked Data Views HTML based views of your data • Linked Data API - Puelia - Elda • Bespoke Views - Hand crafted webpages • Backed by a Triple Store - Local hosted - Hosted - Managed Service - Talis
  119. 119. Links
  120. 120. Links Follow your nose
  121. 121. Links Follow your nose
  122. 122. Is RDF the onlyway to do Linked Data?
  123. 123. Web Standards
  124. 124. But I just wantto let people use my data.
  125. 125. http://www.flickr.com/photos/jwilde/3499946512
  126. 126. Accessing your Data http://www.flickr.com/photos/jwilde/3499946512
  127. 127. Accessing your Data Dat a API http://www.flickr.com/photos/jwilde/3499946512
  128. 128. Accessing your Data}All have APIs Dat a API http://www.flickr.com/photos/jwilde/3499946512
  129. 129. Accessing your Data}All have APIsAll different! Dat a API http://www.flickr.com/photos/jwilde/3499946512
  130. 130. Summary Na Co De Mo Pu bli sc me nv de sh ri e l be rt pr e r reP o Iifiely me S sAud g Fpo tl rQ PRer L le Durlce no to ty nA rg Rm ode trip i ing
  131. 131. Summary Na Co De Mo Pu bli sc me nv de sh ri e l be rtontology identifier SPARQL RDF property g url resource merginmodel triple API
  132. 132. le URI DFtrip R http://www.flickr.com/photos/thienzieyung/5147954561
  133. 133. D FR I U R rip le t http://www.flickr.com/photos/thienzieyung/5147954561
  134. 134. http://consulting.talis.com
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