Presented by Tim Hodson at the Talis Event 'Data on the Web the Benefits of Linking' London 19th October 2011

1. Linked Data
Under the Hood
Tim Hodson
Technical Consultant
@timhodson
#talisldod
Thursday, 20 October 11

2. Where do I
start?
Thursday, 20 October 11

3. Thursday, 20 October 11

4. dprr iel r
reP o Iif e y
Se Aud g
me
s Fpe
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Ptlocen
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Durl re
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to ertL ce
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ode
trip y
i gin
g
http://www.flickr.com/photos/thienzieyung/5147954561
Thursday, 20 October 11

5. le
res
trip
our I F
ce P RD
A
o lo gy
o nt
SPAR
Q L
pro
l pe
d e der rty
m o me
efe
e r ren
ti fi ce
rg
n url
ing
e
id
Thursday, 20 October 11
http://www.flickr.com/photos/thienzieyung/5147954561

6. Simple Process
Na
Co
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Mo
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bli
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nv
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be
rt
Thursday, 20 October 11

7. Simple Process
Na
Co
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bli
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me
nv
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rt
Thursday, 20 October 11

8. Simple Process
Mo
de
l
Thursday, 20 October 11

9. Look at your data
http://www.flickr.com/photos/pss/4876189045/
Thursday, 20 October 11

10. What am I
looking for?
Thursday, 20 October 11

11. http://www.flickr.com/photos/striatic/729822
Thursday, 20 October 11

12. Simple Process
Mo
de
l
Thursday, 20 October 11

13. Simple Process
Na
Mo
me
de
l
Thursday, 20 October 11

14. identifier
Thursday, 20 October 11

15. identifier
thing
Thursday, 20 October 11

16. identifier
thing
Thursday, 20 October 11

17. identifier
thing
1969-059A
Thursday, 20 October 11

18. identifier
thing
1969-059A
spacecraft/1969-059A
Thursday, 20 October 11

19. identifier
thing
1969-059A
spacecraft/1969-059A
nasa.dataincubator.org/spacecraft/1969-059A
Thursday, 20 October 11

20. identifier
thing
1969-059A
spacecraft/1969-059A
nasa.dataincubator.org/spacecraft/1969-059A
http://nasa.dataincubator.org/spacecraft/1969-059A
Thursday, 20 October 11

21. identifier
28801.0kg
thing
1969-059A
spacecraft/1969-059A
nasa.dataincubator.org/spacecraft/1969-059A
http://nasa.dataincubator.org/spacecraft/1969-059A
Thursday, 20 October 11

22. identifier
28801.0kg
Columbia
Apollo 11 CSM
CSM-107
thing
1969-059A
spacecraft/1969-059A
nasa.dataincubator.org/spacecraft/1969-059A
http://nasa.dataincubator.org/spacecraft/1969-059A
Thursday, 20 October 11

23. identifier
28801.0kg
Columbia
Apollo 11 CSM
CSM-107
thing
United States
1969-059A
spacecraft/1969-059A
nasa.dataincubator.org/spacecraft/1969-059A
http://nasa.dataincubator.org/spacecraft/1969-059A
Thursday, 20 October 11

24. identifier
28801.0kg
Columbia
Apollo 11 CSM
CSM-107
thing
United States
Cape Canaveral
1969-059A
spacecraft/1969-059A
nasa.dataincubator.org/spacecraft/1969-059A
http://nasa.dataincubator.org/spacecraft/1969-059A
Thursday, 20 October 11

25. identifier
28801.0kg
Columbia
Apollo 11 CSM
CSM-107
thing
United States
Cape Canaveral
1969-059A
Saturn 5 spacecraft/1969-059A
nasa.dataincubator.org/spacecraft/1969-059A
http://nasa.dataincubator.org/spacecraft/1969-059A
Thursday, 20 October 11

26. identifier
28801.0kg
Columbia
Apollo 11 CSM
CSM-107
thing
United States
Cape Canaveral
1969-059A
Saturn 5 spacecraft/1969-059A
nasa.dataincubator.org/spacecraft/1969-059A
http://nasa.dataincubator.org/spacecraft/1969-059A
Thursday, 20 October 11

27. identifier
Thursday, 20 October 11

28. identifier
.../1969-059A
Thursday, 20 October 11

29. identifier
28801.0
mass .../1969-059A
Thursday, 20 October 11

30. identifier
Apollo 11 CSM
28801.0
name
mass .../1969-059A
Thursday, 20 October 11

31. identifier
Apollo 11 CSM Columbia
name
28801.0 name
mass .../1969-059A
Thursday, 20 October 11

32. identifier
Apollo 11 CSM Columbia
name
28801.0 name
mass .../1969-059A
launch
../launch:
1969-059
Thursday, 20 October 11

33. identifier
Apollo 11 CSM Columbia
name
28801.0 name
mass .../1969-059A 16 July 1969
launch
date
../launch:
1969-059
Thursday, 20 October 11

34. identifier
Apollo 11 CSM Columbia
name
28801.0 name
mass .../1969-059A 16 July 1969
launch
date
../launch:
1969-059
site
Cape
Canaveral
Thursday, 20 October 11

35. identifier
Apollo 11 CSM Columbia
name
28801.0 name
mass .../1969-059A 16 July 1969
launch
date
../launch:
1969-059
site
Cape
Canaveral lat
N 28° 27' 31''
Thursday, 20 October 11

36. identifier
Apollo 11 CSM Columbia
name
28801.0 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''
Thursday, 20 October 11

37. 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''
Thursday, 20 October 11

38. That all looks a
bit scary!
Thursday, 20 October 11

39. Simple format
An easy structure for capturing data
Thursday, 20 October 11

40. Simple format
An easy structure for capturing data
property
subject value
Thursday, 20 October 11

41. Simple format
An easy structure for capturing data
property
subject value
property
thing thing
Thursday, 20 October 11

42. Simple format
An easy structure for capturing data
property
subject value
property
thing thing
Simple merging
An easy way to bung stuff together
Thursday, 20 October 11

43. Simple format
An easy structure for capturing data
property
subject value
property
thing thing
Simple merging
An easy way to bung stuff together
../person/A
Thursday, 20 October 11

44. Simple format
An easy structure for capturing data
property
subject value
property
thing thing
Simple merging
An easy way to bung stuff together
../person/A hasParent
Thursday, 20 October 11

45. Simple format
An easy structure for capturing data
property
subject value
property
thing thing
Simple merging
An easy way to bung stuff together
../person/A hasParent ../person/B
Thursday, 20 October 11

46. Simple format
An easy structure for capturing data
property
subject value
property
thing thing
Simple merging
An easy way to bung stuff together
../person/A hasParent ../person/B
../person/B
Thursday, 20 October 11

47. Simple format
An easy structure for capturing data
property
subject value
property
thing thing
Simple merging
An easy way to bung stuff together
../person/A hasParent ../person/B
../person/B name
Thursday, 20 October 11

48. Simple format
An easy structure for capturing data
property
subject value
property
thing thing
Simple merging
An easy way to bung stuff together
../person/A hasParent ../person/B
../person/B name “Eric”
Thursday, 20 October 11

49. Simple format
An easy structure for capturing data
property
subject value
property
thing thing
Simple merging
An easy way to bung stuff together
../person/A hasParent ../person/B
../person/B name “Eric”
Thursday, 20 October 11

50. Simple format
An easy structure for capturing data
property
subject value
property
thing thing
Simple merging
An easy way to bung stuff together
../person/A hasParent ../person/B name “Eric”
Thursday, 20 October 11

51. RDF Triple
Merging
Thursday, 20 October 11

52. RDF Triple
Merging
The same identifier in a different
place is still the same thing
Thursday, 20 October 11

53. Thursday, 20 October 11

54. Simple Process
Na
Mo
me
de
l
Thursday, 20 October 11

55. Simple Process
Na
De
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sc
me
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l
be
Thursday, 20 October 11

56. Thursday, 20 October 11

57. Properties?
Thursday, 20 October 11

58. Properties?
Classes?
Thursday, 20 October 11

59. Properties?
describe why something is linked
Classes?
Thursday, 20 October 11

60. Properties?
describe why something is linked
Classes?
group similarly typed things together
Thursday, 20 October 11

61. How do I know
what terms to
use?
Thursday, 20 October 11

62. Ask someone
Thursday, 20 October 11

63. Ask someone
• schemapedia.com
Thursday, 20 October 11

64. Ask someone
• schemapedia.com
• scemacache.com
Thursday, 20 October 11

65. Ask someone
• schemapedia.com
• scemacache.com
• sindice.com
Thursday, 20 October 11

66. Why don’t I
just use my own
terms for
things?
Thursday, 20 October 11

67. Thursday, 20 October 11

68. Thursday, 20 October 11

69. Add Value
Link to external sources
Thursday, 20 October 11

70. Simple Process
Na
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Thursday, 20 October 11

71. Simple Process
Na
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Thursday, 20 October 11

72. Conversion
Thursday, 20 October 11

73. Conversion
• Database / spreadsheet export
Thursday, 20 October 11

74. Conversion
• Database / spreadsheet export
- Script/program convert
Thursday, 20 October 11

75. Conversion
• Database / spreadsheet export
- Script/program convert
• Pull existing Linked Data from sites
Thursday, 20 October 11

76. Conversion
• Database / spreadsheet export
- Script/program convert
• Pull existing Linked Data from sites
- URI matching
Thursday, 20 October 11

77. Conversion
• Database / spreadsheet export
- Script/program convert
• Pull existing Linked Data from sites
- URI matching
- Linksets
Thursday, 20 October 11

78. Conversion
• Database / spreadsheet export
- Script/program convert
• Pull existing Linked Data from sites
- URI matching
- Linksets
• Google Refine
Thursday, 20 October 11

79. Conversion
• Database / spreadsheet export
- Script/program convert
• Pull existing Linked Data from sites
- URI matching
- Linksets
• Google Refine
- Facet analysis
Thursday, 20 October 11

80. Conversion
• Database / spreadsheet export
- Script/program convert
• Pull existing Linked Data from sites
- URI matching
- Linksets
• Google Refine
- Facet analysis
- Reconciliation API
Thursday, 20 October 11

81. What does my
data look like
now?
Thursday, 20 October 11

82. RDF Flavours
16 July 1969
date
../launch:
1969-059
Cape
Canaveral
Thursday, 20 October 11

83. RDF Flavours
• RDF/XML 16 July 1969
date
../launch:
1969-059
Cape
Canaveral
Thursday, 20 October 11

84. RDF Flavours
• RDF/XML 16 July 1969
Machine to machine
date
../launch:
1969-059
Cape
Canaveral
Thursday, 20 October 11

85. RDF Flavours
• RDF/XML 16 July 1969
Machine to machine
• N-Triples date
../launch:
1969-059
Cape
Canaveral
Thursday, 20 October 11

86. RDF Flavours
• RDF/XML 16 July 1969
Machine to machine
• N-Triples date
Processing ../launch:
1969-059
Cape
Canaveral
Thursday, 20 October 11

87. RDF Flavours
• RDF/XML 16 July 1969
Machine to machine
• N-Triples date
Processing ../launch:
• Turtle 1969-059
Cape
Canaveral
Thursday, 20 October 11

88. RDF Flavours
• RDF/XML 16 July 1969
Machine to machine
• N-Triples date
Processing ../launch:
• Turtle 1969-059
Human readable
Cape
Canaveral
Thursday, 20 October 11

89. RDF Flavours
• RDF/XML 16 July 1969
Machine to machine
• N-Triples date
Processing ../launch:
• Turtle 1969-059
Human readable
• RDFa Cape
Canaveral
Thursday, 20 October 11

90. 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
Thursday, 20 October 11

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
All valid RDF
Thursday, 20 October 11

92. Simple Process
Na
Co
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Mo
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me
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l
be
rt
Thursday, 20 October 11

93. Simple Process
Na
Co
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bli
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Thursday, 20 October 11

94. Put it on a web server
http://www.flickr.com/photos/traftery/4773457853
Thursday, 20 October 11

95. SPARQL
Thursday, 20 October 11

96. SPARQL
SPARQL RDF Query Language
Thursday, 20 October 11

97. SPARQL
SPARQL RDF Query Language
• Triple pattern matching
Thursday, 20 October 11

98. SPARQL
SPARQL RDF Query Language
• Triple pattern matching
16 July 1969
date
../launch:
1969-059
Cape
Canaveral
Thursday, 20 October 11

99. SPARQL
SPARQL RDF Query Language
• Triple pattern matching
- uses Turtle
16 July 1969
date
../launch:
1969-059
Cape
Canaveral
Thursday, 20 October 11

100. SPARQL
SPARQL RDF Query Language
• Triple pattern matching
- uses Turtle
Thursday, 20 October 11

101. SPARQL
SPARQL RDF Query Language
• Triple pattern matching
- uses Turtle
• Requires a SPARQL-endpoint
Thursday, 20 October 11

102. SPARQL
SPARQL RDF Query Language
• Triple pattern matching
- uses Turtle
• Requires a SPARQL-endpoint
• Backed by a Triple Store
Thursday, 20 October 11

103. SPARQL
SPARQL RDF Query Language
• Triple pattern matching
- uses Turtle
• Requires a SPARQL-endpoint
• Backed by a Triple Store
- Local hosted
Thursday, 20 October 11

104. SPARQL
SPARQL RDF Query Language
• Triple pattern matching
- uses Turtle
• Requires a SPARQL-endpoint
• Backed by a Triple Store
- Local hosted
- Hosted
Thursday, 20 October 11

105. 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
Thursday, 20 October 11

106. eh?
Thursday, 20 October 11

107. Linked Data Views
Thursday, 20 October 11

108. Linked Data Views
Alternative views of your data
Thursday, 20 October 11

109. Linked Data Views
Alternative views of your data
• Linked Data API
Thursday, 20 October 11

110. Linked Data Views
Alternative views of your data
• Linked Data API
- Puelia
Thursday, 20 October 11

111. Linked Data Views
Alternative views of your data
• Linked Data API
- Puelia
- Elda
Thursday, 20 October 11

112. Linked Data Views
Alternative views of your data
• Linked Data API
- Puelia
- Elda
• Bespoke Views
Thursday, 20 October 11

113. Linked Data Views
Alternative views of your data
• Linked Data API
- Puelia
- Elda
• Bespoke Views
- Hand crafted webpages
Thursday, 20 October 11

114. Linked Data Views
Alternative views of your data
• Linked Data API
- Puelia
- Elda
• Bespoke Views
- Hand crafted webpages
• Backed by a Triple Store
Thursday, 20 October 11

115. Linked Data Views
Alternative views of your data
• Linked Data API
- Puelia
- Elda
• Bespoke Views
- Hand crafted webpages
• Backed by a Triple Store
- Local hosted
Thursday, 20 October 11

116. Linked Data Views
Alternative views of your data
• Linked Data API
- Puelia
- Elda
• Bespoke Views
- Hand crafted webpages
• Backed by a Triple Store
- Local hosted
- Hosted
Thursday, 20 October 11

117. Linked Data Views
Alternative 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
Thursday, 20 October 11

118. Thursday, 20 October 11

119. Thursday, 20 October 11

120. Thursday, 20 October 11

121. Links
Thursday, 20 October 11

122. Links
Follow your nose
Thursday, 20 October 11

123. Thursday, 20 October 11

124. Links
Follow your nose
Thursday, 20 October 11

125. Thursday, 20 October 11

126. Thursday, 20 October 11

127. Is RDF the only
way to do Linked
Data?
Thursday, 20 October 11

128. Thursday, 20 October 11

129. Web Standards
Thursday, 20 October 11

130. But I just want
to let people use
my data.
Thursday, 20 October 11

131. http://www.flickr.com/photos/jwilde/3499946512
Thursday, 20 October 11

132. Accessing your Data
http://www.flickr.com/photos/jwilde/3499946512
Thursday, 20 October 11

133. Accessing your Data
Dat a API
http://www.flickr.com/photos/jwilde/3499946512
Thursday, 20 October 11

134. Accessing your Data
}
All have APIs
Dat a API
http://www.flickr.com/photos/jwilde/3499946512
Thursday, 20 October 11

135. Accessing your Data
}
All have APIs
All different!
Dat a API
http://www.flickr.com/photos/jwilde/3499946512
Thursday, 20 October 11

136. Summary
Na
Co
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Mo
Pu
bli
sc
me
nv
de
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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
Thursday, 20 October 11

137. Summary
Na
Co
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bli
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nv
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ontology identifier SPARQL
RDF
property g
url resource mergin
model triple API
Thursday, 20 October 11

138. le
URI
DF
trip
R
http://www.flickr.com/photos/thienzieyung/5147954561
Thursday, 20 October 11

139. D F
R I
U R
rip le
t
http://www.flickr.com/photos/thienzieyung/5147954561
Thursday, 20 October 11

140. Thursday, 20 October 11

141. http://consulting.talis.com
Thursday, 20 October 11