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

1. Why Link?
Linking has value for data
big and small
Richard Wallis
@rjw

3. Leading Semantic Web
Technology

4. 40 Year Rich
Metadata Heritage
Leading Semantic Web
Technology

5. Shared Innovation
Ethos
40 Year Rich
Metadata Heritage
Leading Semantic Web
Technology

8. kasabi.com

13. S tu ff
a t in g
R el

14. S tuff
dtn
iingg
RFe la
in
?

15. S tuff
dtn
iingg
RFe la
in
?

16. RelatingStufff
Finding Stuf
?

17. RelatingStufff
Finding Stuf
?
Not a human-scale challenge...

18. Not a human-scale challenge...

19. Which ‘thing’ are you referencing ...
Not a human-scale challenge...

20. Which ‘thing’ are you referencing ...

23. Feed of Weather/Buoy Data
• Updated every 6 mins
• Temp - Air/Water
• Humidity
• Wind - Speed/Direction
• Atmospheric Pressure
http://www.wunderground.com

24. Feed of Weather/Buoy Data
• Updated every 6 mins
• Temp - Air/Water
• Humidity
• Wind - Speed/Direction
• Atmospheric Pressure
http://www.wunderground.com

25. Feed of Weather/Buoy Data
• Updated every 6 mins
• Temp - Air/Water
• Humidity
• Wind - Speed/Direction
• Atmospheric Pressure
http://www.wunderground.com

26. Feed of Weather/Buoy Data
• Updated every 6 mins
• Temp - Air/Water
• Humidity
• Wind - Speed/Direction
• Atmospheric Pressure
http://www.wunderground.com

27. Linked Data

28. Linked Data
Built on Semantic Web Standards

29. Linked Data
Built on Semantic Web Standards
All about identifying and linking things
Thi ng

30. Identifying things

31. Identifying things

32. Identifying things
1969-059A

33. Identifying things
1969-059A
spacecraft/1969-059A

34. Identifying things
1969-059A
spacecraft/1969-059A
nasa.dataincubator.org/spacecraft/1969-059A

35. Identifying things
with URIs
1969-059A
spacecraft/1969-059A
nasa.dataincubator.org/spacecraft/1969-059A
http://nasa.dataincubator.org/spacecraft/1969-059A

36. Things have attributes
http://nasa.dataincubator.org/spacecraft/1969-059A

37. Things have attributes
http://nasa.dataincubator.org/spacecraft/1969-059A
28801.0kg

38. Things have attributes
http://nasa.dataincubator.org/spacecraft/1969-059A
28801.0kg
Columbia

39. Things have attributes
http://nasa.dataincubator.org/spacecraft/1969-059A
28801.0kg
Columbia
Apollo 11 CSM
CSM-107
United States
Cape Canaveral
Saturn 5

40. http://nasa.dataincubator.org/spacecraft/1969-059A

41. http://nasa.dataincubator.org/spacecraft/1969-059A
.../spacecraft/
1969-059A

42. .../spacecraft/
http://nasa.dataincubator.org/spacecraft/1969-059A
1969-059A

43. 28801.0
mass .../spacecraft/
http://nasa.dataincubator.org/spacecraft/1969-059A
1969-059A

44. Apollo 11 CSM
28801.0
name
mass .../spacecraft/
http://nasa.dataincubator.org/spacecraft/1969-059A
1969-059A

45. Apollo 11 CSM Columbia
name
28801.0 name
mass .../spacecraft/
http://nasa.dataincubator.org/spacecraft/1969-059A
1969-059A

46. Apollo 11 CSM Columbia
name
28801.0 name
mass .../spacecraft/
http://nasa.dataincubator.org/spacecraft/1969-059A
1969-059A
launch
../launch/1969-059

47. Apollo 11 CSM Columbia
name
28801.0 name
mass .../spacecraft/ 16 July 1969
http://nasa.dataincubator.org/spacecraft/1969-059A
1969-059A
launch
date
../launch/1969-059

48. Apollo 11 CSM Columbia
name
28801.0 name
mass .../spacecraft/ 16 July 1969
http://nasa.dataincubator.org/spacecraft/1969-059A
1969-059A
launch
date
../launch/1969-059
site
../cape
canaveral

49. Apollo 11 CSM Columbia
name
28801.0 name
mass .../spacecraft/ 16 July 1969
http://nasa.dataincubator.org/spacecraft/1969-059A
1969-059A
launch
date
../launch/1969-059
site
../cape
canaveral lat
N 28° 27' 31''

50. Apollo 11 CSM Columbia
name
28801.0 name
mass .../spacecraft/ 16 July 1969
http://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''

51. Apollo 11 CSM Columbia
name
28801.0 name
mass .../spacecraft/ 16 July 1969
http://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''

52. RDF
Apollo 11 CSM Columbia
name
28801.0 name
mass .../spacecraft/ 16 July 1969
http://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''

53. RDF Triple

54. RDF Triple
Thing attribute value

55. RDF Triple
Thing property value

56. RDF Triple
Thing property value
Thing property Thing

57. RDF Triple
Thing property value
Thing property Thing
../person/A

58. RDF Triple
Thing property value
Thing property Thing
../person/A hasParent

59. RDF Triple
Thing property value
Thing property Thing
../person/A hasParent ../person/B

60. RDF Triple
Thing property value
Thing property Thing
../person/A hasParent ../person/B
../person/B

61. RDF Triple
Thing property value
Thing property Thing
../person/A hasParent ../person/B
../person/B name

62. RDF Triple
Thing property value
Thing property Thing
../person/A hasParent ../person/B
../person/B name “Eric”

63. RDF Triple
Merging
Thing property value
Thing property Thing
../person/A hasParent ../person/B
../person/B name “Eric”

64. RDF Triple
Merging
Thing property value
Thing property Thing
../person/A hasParent ../person/B name “Eric”

65. RDF Triple
Merging

66. RDF Triple
Merging
The same identifier in a different place
is still identifying the same thing

67. Linked Data Principles

68. Linked Data Principles
1. Use URIs as names for things

69. Linked Data Principles
1. Use URIs as names for things
2. Use HTTP URIs so people can look up those
names

70. 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

71. 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

72. Feed of Weather/Buoy Data
• Updated every 6mins
• Temp - Air/Water
• Humidity
• Wind - Speed/Direction
• Atmospheric Pressure
http://www.wunderground.com

73. 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

74. http://dbpedia.org/resource/Boston
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

75. http://dbpedia.org/resource/Boston
http://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

76. Linked Data example

77. Linked Data example

78. Linked Data example

79. Linked Data example

80. Linked Data example

81. Linked Data example

82. Linked Data
What do I need to know?

83. Linked Data
What do I need to know?
• Globally distributed / adopted

84. Linked Data
What do I need to know?
• Globally distributed / adopted
• Still evolving

85. Linked Data
What do I need to know?
• Globally distributed / adopted
• Still evolving
• Built on Web standards

86. Linked Data
What do I need to know?
• Globally distributed / adopted
• Still evolving
• Built on Web standards
• Low barrier to data

87. Linked Data
What do I need to know?
• Globally distributed / adopted
• Still evolving
• Built on Web standards
• Low barrier to [other people’s] data

88. 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

89. 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

90. Linked Data
What do I need to know?

91. Linked Data
What do I need to know?
• Not all Linked Data is Open

92. Linked Data
What do I need to know?
• Not all Linked Data is Open
• Not all Open Data is Linked

93. 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

94. 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

95. Linked Data

96. Linked Data
How much do I need to do?
• As much as practicable

97. Linked Data
How much do I need to do?
• As much as practicable
• Identify your ‘things’ and link to ...

98. Linked Data
How much do I need to do?
• As much as practicable
• Identify your ‘things’ and link to ...
- add value to your data

99. Linked Data
How much do I need to do?
• As much as practicable
• Identify your ‘things’ and link to ...
- add value to your data
- help others discover

100. Linked Data

101. Linked Data
Who is doing it?

102. Linked Data
Who is doing it?

103. Linked Data
Who is doing it?

104. Linked Data
Who is doing it?

105. Why Link?
Linking has value for data
big and small
Richard Wallis
@rjw

106. Why Link?
Linking has value for data
big and small
Richard Wallis
@rjw
http://slideshare.net/rjw