The world’s libraries. Connected.
The Simple Power of the Link
Richard Wallis
Technology EvangelistOCLC
@rjw
OCLC ContactdagUtrecht 2 October 2012
The world’s libraries. Connected.
Linked Data
The world’s libraries. Connected.
Linked Data
• What is Linked Data
• Who is using it
• What are the benets
• OCLC and Linked Data
Linked DataLinked Data
Linked Data
Built on Semantic Web Standards
Linked Data
Linked Data
Built on Semantic Web Standards
All about identifying and linking things
Linked Data
Thing
Identifying things
Identifying things
Identifying things
1969-059A
Identifying things
spacecraft/1969-059A
1969-059A
Identifying things
spacecraft/1969-059A
nasa.dataincubator.org/spacecraft/1969-059A
1969-059A
Identifying things
spacecraft/1969-059A
nasa.dataincubator.org/spacecraft/1969-059A
http://nasa.dataincubator.org/spacecraft/1969-059A
1969-059A
Identifying things
spacecraft/1969-059A
nasa.dataincubator.org/spacecraft/1969-059A
http://nasa.dataincubator.org/spacecraft/1969-059A
1969-059A
with URIs
Things have attributeshttp://nasa.dataincubator.org/spacecraft/1969-059A
Things have attributeshttp://nasa.dataincubator.org/spacecraft/1969-059A
28801.0kg
Things have attributeshttp://nasa.dataincubator.org/spacecraft/1969-059A
28801.0kg
Columbia
Things have attributeshttp://nasa.dataincubator.org/spacecraft/1969-059A
28801.0kg
Columbia
Apollo 11 CSM
CSM-107
United States
Cape Canaveral
Saturn 5
http://nasa.dataincubator.org/spacecraft/1969-059A
.../1969-059Ahttp://nasa.dataincubator.org/spacecraft/1969-059A
⤵mass
28801.0.../
1969-059Ahttp://nasa.dataincubator.org/spacecraft/1969-059A
⤵mass
28801.0
Apollo 11 CSM
⤵name.../
1969-059Ahttp://nasa.dataincubator.org/spacecraft/1969-059A
⤵mass
28801.0
Apollo 11 CSM
⤵Columbia⤵
name name
.../1969-059Ahttp://nasa.dataincubator.org/spacecraft/1969-059A
⤵⤵mass
28801.0
Apollo 11 CSM
⤵Columbia⤵
name name
.../1969-059A
prefName
http://nasa.dataincubator.org/spacecraft/1969-059A
⤵⤵⤵mass
28801.0
Apollo 11 CSM
⤵Columbia⤵
name name
launch
.../1969-059A
../launch/
1969-059
prefName
http://nasa.dataincubator.org/spacecraft/1969-059A
⤵⤵⤵mass
28801.0
Apollo 11 CSM
⤵Columbia⤵
name name
launch16 July 1969⤵date
.../1969-059A
../launch/
1969-059
prefName
http://nasa.dataincubator.org/spacecraft/1969-059A
⤵⤵⤵mass
28801.0
Apollo 11 CSM
⤵Columbia⤵
name name
launch16 July 1969⤵date
⤵site
.../1969-059A
../launch/
1969-059
Cape Canaveral
prefName
http://nasa.dataincubator.org/spacecraft/1969-059A
⤵⤵⤵mass
28801.0
Apollo 11 CSM
⤵Columbia⤵
name name
launch16 July 1969⤵date
⤵site
N 28° 27' 31''
W 80° 31' 59''
⤵⤵lat
long
.../1969-059A
../launch/
1969-059
Cape Canaveral
prefName
http://nasa.dataincubator.org/spacecraft/1969-059A
⤵⤵⤵mass
28801.0
Apollo 11 CSM
⤵Columbia⤵
name name
launch16 July 1969⤵date
⤵site
RDF
N 28° 27' 31''
W 80° 31' 59''
⤵⤵lat
long
.../1969-059A
../launch/
1969-059
Cape Canaveral
prefName
http://nasa.dataincubator.org/spacecraft/1969-059A
⤵⤵⤵mass
28801.0
Apollo 11 CSM
⤵Columbia⤵
name name
launch16 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
http://nasa.dataincubator.org/spacecraft/1969-059A
RDF Triple
RDF Triple
Thing attribute value
property
RDF Triple
Thing value
property
RDF Triple
Thing value
Thing property Thing
property
RDF Triple
Thing value
Thing property Thing
../person/A
property
RDF Triple
Thing value
Thing property Thing
../person/A hasParent
property
RDF Triple
Thing value
Thing property Thing
../person/B../person/A hasParent
property
RDF Triple
Thing value
Thing property Thing
../person/B
../person/B
../person/A hasParent
property
RDF Triple
Thing value
Thing property Thing
../person/B
name../person/B
../person/A hasParent
property
“Eric”
RDF Triple
Thing value
Thing property Thing
../person/B
name../person/B
../person/A hasParent
property
“Eric”
RDF Triple
Thing value
Thing property Thing
../person/B
name../person/B
../person/A hasParent
property
“Eric”
RDF Triple
Thing value
Thing property Thing
name../person/B../person/A hasParent
Merging
RDF TripleMerging
RDF TripleMerging
The same identifier in a different place still identifies the same thing
The world’s libraries. Connected.
Linked Data PrinciplesLinked Data Principles
The world’s libraries. Connected.
Linked Data PrinciplesLinked Data Principles
1. Use URIs as names for things
The world’s libraries. Connected.
Linked Data PrinciplesLinked Data Principles
1. Use URIs as names for things
2. Use HTTP URIs so people can look up those names
The world’s libraries. Connected.
Linked Data PrinciplesLinked 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
The world’s libraries. Connected.
Linked Data PrinciplesLinked 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
http://www.flickr.com/photos/jolieodell/4540783805
http://www.flickr.com/photos/jolieodell/4540783805
The world’s libraries. Connected.
Linked Data
The world’s libraries. Connected.
Linked DataVIAF
http://viaf.orgHTML, RDF/XMLLicense: ODC-BY
Deweyhttp://dewey.infoHTML/RDFa, RDF/XML, Turtle, JSON - SPARQLLicense: CC BY-NC-ND
FASThttp://id.worldcat.org/fastHTML, RDF/XML - DownloadLicense: ODC-BY
The world’s libraries. Connected.
Linked Data
The world’s libraries. Connected.
Linked Data• 270+ Million resources
The world’s libraries. Connected.
Linked Data• 270+ Million resources• Schema.org + Library
The world’s libraries. Connected.
Linked Data• 270+ Million resources• Schema.org + Library• Embedded RDFa
The world’s libraries. Connected.
Linked Data• 270+ Million resources• Schema.org + Library• Embedded RDFa• Links to: Dewey, LCSH
LCNAF, DOI, VIAF, FAST
The world’s libraries. Connected.
Linked Data• 270+ Million resources• Schema.org + Library• Embedded RDFa• Links to: Dewey, LCSH
LCNAF, DOI, VIAF, FAST• License: ODC-BY
The world’s libraries. Connected.
Linked Data• 270+ Million resources• Schema.org + Library• Embedded RDFa• Links to: Dewey, LCSH
LCNAF, DOI, VIAF, FAST• License: ODC-BY• Experimental - June 2012
http://www.w3.org/community/schemabibex/
The world’s libraries. Connected.
Linked Data• 270+ Million resources• Schema.org + Library• Embedded RDFa• Links to: Dewey, LCSH
LCNAF, DOI, VIAF, FAST• License: ODC-BY• Experimental - June 2012
Download file
The world’s libraries. Connected.
Linked Data• 270+ Million resources• Schema.org + Library• Embedded RDFa• Links to: Dewey, LCSH
LCNAF, DOI, VIAF, FAST• License: ODC-BY• Experimental - June 2012
Download file• Most widely held works
(250+ holdings)
• 1.2 Million resources(80 million triples)
• Schema.org + Library• License: ODC-BY• August 2012
The world’s libraries. Connected.
Linked Data• 270+ Million resources• Schema.org + Library• Embedded RDFa• Links to: Dewey, LCSH
LCNAF, DOI, VIAF, FAST• License: ODC-BY• Experimental - June 2012
http://worldcat.org http://purl.oclc.org/dataset/WorldCat
http://www.oclc.org/data/attribution.html
The world’s libraries. Connected.
Linked Data
The world’s libraries. Connected.
Linked DataVIAF: http://viaf.org
Dewey: http://dewey.info
FAST: http://id.worldcat.org/fast
WorldCat: http://www.worldcat.org
WorldCat Most Widely Held Download: http://purl.oclc.org/dataset/WorldCatMostHighlyHeld
ODC-BY Attribution Guidelines: http://www.oclc.org/data/attribution.html
http://en.wikipedia.org/wiki/File:North_Atlantic_Ocean_laea_relief_location_map.jpg
Linked Data Potential
http://en.wikipedia.org/wiki/File:North_Atlantic_Ocean_laea_relief_location_map.jpg
Linked Data Potential
http://en.wikipedia.org/wiki/File:North_Atlantic_Ocean_laea_relief_location_map.jpg
Linked Data Potential
http://en.wikipedia.org/wiki/File:North_Atlantic_Ocean_laea_relief_location_map.jpg
Linked Data Potential
http://en.wikipedia.org/wiki/File:North_Atlantic_Ocean_laea_relief_location_map.jpg
Linked Data Potential
http://en.wikipedia.org/wiki/File:North_Atlantic_Ocean_laea_relief_location_map.jpg
Linked Data Potential
http://en.wikipedia.org/wiki/File:North_Atlantic_Ocean_laea_relief_location_map.jpg
Linked Data Potential
http://en.wikipedia.org/wiki/File:North_Atlantic_Ocean_laea_relief_location_map.jpg
Linked Data Potential
http://en.wikipedia.org/wiki/File:North_Atlantic_Ocean_laea_relief_location_map.jpg
Linked Data Potential
Linked Data Potential
Linked Data
RDF
just another output format?
RDF
just another output format?
RDF
initially - yes
RDFIdentifying & Linking
RDFIdentifying & Linking
Resources to Concepts
RDFIdentifying & Linking
Resources to Concepts../
res/12345
RDFIdentifying & Linking
Resources to ConceptsPlanning for Automation ⤵name
../res/12345
RDFIdentifying & Linking
Resources to ConceptsPlanning for Automation ⤵name
schema:Book⤵../res/12345
type
RDFIdentifying & Linking
Resources to Concepts
⤵Planning for Automation ⤵name
author
viaf.org/abc
schema:Book⤵../res/12345
type
RDFIdentifying & Linking
Resources to Concepts
⤵Planning for Automation ⤵
John M Cohn
nameauthor ⤵
viaf.org/abc name
schema:Book⤵../res/12345
type
RDFIdentifying & Linking
Resources to Concepts
⤵Planning for Automation ⤵
John M Cohn
nameauthor ⤵⤵
loc.gov/auth/sh8507
viaf.org/abc name
about
schema:Book⤵../res/12345
type
RDFIdentifying & Linking
Resources to Concepts
⤵Planning for Automation ⤵
John M Cohn
nameauthor ⤵⤵
loc.gov/auth/sh8507
viaf.org/abc name
about
Libraries
⤵name
schema:Book⤵../res/12345
type
RDFIdentifying & Linking
Resources to Concepts⤵
Planning for Automation ⤵John M Cohn
nameauthor ⤵⤵
loc.gov/auth/sh8507
viaf.org/abc name
about
Libraries
⤵name
schema:Book⤵../res/12345
type
<http://lib.org/res/1234> name "Planning for Automation" .
<http://lib.org/res/1234> schema:type schema:Book .
<http://lib.org/res/1234> schema:author <http://viaf.org/abc> .
<http://lib.org/res/1234> schema:about <http://loc.gov/authorities/sh8570>
RDFIdentifying & Linking
Resources to Concepts
Where has the record gone?
⤵Planning for Automation ⤵
John M Cohn
nameauthor ⤵⤵
loc.gov/auth/sh8507
viaf.org/abc name
about
Libraries
⤵name
schema:Book⤵../res/12345
type
<http://lib.org/res/1234> name "Planning for Automation" .
<http://lib.org/res/1234> schema:type schema:Book .
<http://lib.org/res/1234> schema:author <http://viaf.org/abc> .
<http://lib.org/res/1234> schema:about <http://loc.gov/authorities/sh8570>
RDFWhere has the record gone?
RDFWhere has the record gone?
What next for cataloguing?
http://www.flickr.com/photos/24736216@N07/6153313394/
Stop Copying
Start Linking
http://www.flickr.com/photos/24736216@N07/6153313394/
Stop Copying
Start Linking
Be of the Web!
The world’s libraries. Connected.
Richard Wallis
Technology EvangelistOCLC
@rjw
OCLC ContactdagUtrecht 2 October 2012
The Simple Power of the Link
Top Related