The Simple Power of the Link

The world’s libraries. Connected.

The Simple Power of the Link

Richard Wallis

Technology EvangelistOCLC

@rjw

OCLC ContactdagUtrecht 2 October 2012


Linked Data


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

1969-059A

Identifying things

spacecraft/1969-059A

1969-059A

Identifying things


nasa.dataincubator.org/spacecraft/1969-059A

1969-059A

Identifying things



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

1969-059A

Identifying things




1969-059A

with URIs

Things have attributeshttp://nasa.dataincubator.org/spacecraft/1969-059A


28801.0kg


28801.0kg

Columbia


28801.0kg

Columbia

Apollo 11 CSM

CSM-107

United States

Cape Canaveral

Saturn 5

.../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


⤵⤵⤵mass

28801.0

Apollo 11 CSM

⤵Columbia⤵

name name

launch

.../1969-059A

../launch/

1969-059

prefName


⤵⤵⤵mass

28801.0

Apollo 11 CSM

⤵Columbia⤵

name name

launch16 July 1969⤵date

.../1969-059A

../launch/

1969-059

prefName


⤵⤵⤵mass

28801.0

Apollo 11 CSM

⤵Columbia⤵

name name


⤵site

.../1969-059A

../launch/

1969-059

Cape Canaveral

prefName


⤵⤵⤵mass

28801.0

Apollo 11 CSM

⤵Columbia⤵

name name


⤵site

N 28° 27' 31''

W 80° 31' 59''

⤵⤵lat

long

.../1969-059A

../launch/

1969-059

Cape Canaveral

prefName


⤵⤵⤵mass

28801.0

Apollo 11 CSM

⤵Columbia⤵

name name


⤵site

RDF

N 28° 27' 31''

W 80° 31' 59''

⤵⤵lat

long

.../1969-059A

../launch/

1969-059

Cape Canaveral

prefName


⤵⤵⤵mass

28801.0

Apollo 11 CSM

⤵Columbia⤵

name name


⤵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


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


../person/A

property

RDF Triple

Thing value


../person/A hasParent

property

RDF Triple

Thing value


../person/B../person/A hasParent

property

RDF Triple

Thing value


../person/B

../person/B


property

RDF Triple

Thing value


../person/B

name../person/B


property

“Eric”

RDF Triple

Thing value


../person/B

name../person/B


property

“Eric”

RDF Triple

Thing value


name../person/B../person/A hasParent

Merging

RDF TripleMerging

RDF TripleMerging

The same identifier in a different place still identifies the same thing


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





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


Linked Data


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


Linked Data


Linked Data• 270+ Million resources


Linked Data• 270+ Million resources• Schema.org + Library


Linked Data• 270+ Million resources• Schema.org + Library• Embedded RDFa


Linked Data• 270+ Million resources• Schema.org + Library• Embedded RDFa• Links to: Dewey, LCSH

LCNAF, DOI, VIAF, FAST



LCNAF, DOI, VIAF, FAST• License: ODC-BY



LCNAF, DOI, VIAF, FAST• License: ODC-BY• Experimental - June 2012

http://www.w3.org/community/schemabibex/

Download file




Download file• Most widely held works

(250+ holdings)

• 1.2 Million resources(80 million triples)

• Schema.org + Library• License: ODC-BY• August 2012




http://worldcat.org http://purl.oclc.org/dataset/WorldCat

http://purl.oclc.org/dataset/WorldCat

http://purl.oclc.org/dataset/WorldCat

http://www.oclc.org/data/attribution.html


Linked Data


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

[email protected]

http://viaf.org

http://viaf.org

http://en.wikipedia.org/wiki/File:North_Atlantic_Ocean_laea_relief_location_map.jpg

Linked Data Potential

Linked Data Potential

Linked Data

just another output format?

RDF

just another output format?

RDF

initially - yes

RDFIdentifying & Linking


Resources to Concepts


Resources to Concepts../

res/12345


Resources to ConceptsPlanning for Automation ⤵name

../res/12345


Resources to ConceptsPlanning for Automation ⤵name

schema:Book⤵../res/12345

type



⤵Planning for Automation ⤵name

author

viaf.org/abc


type



⤵Planning for Automation ⤵

John M Cohn

nameauthor ⤵

viaf.org/abc name


type




John M Cohn

nameauthor ⤵⤵

loc.gov/auth/sh8507

viaf.org/abc name

about


type




John M Cohn

nameauthor ⤵⤵

loc.gov/auth/sh8507

viaf.org/abc name

about

Libraries

⤵name


type


Resources to Concepts⤵

Planning for Automation ⤵John M Cohn

nameauthor ⤵⤵

loc.gov/auth/sh8507

viaf.org/abc name

about

Libraries

⤵name


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>



Where has the record gone?


John M Cohn

nameauthor ⤵⤵

loc.gov/auth/sh8507

viaf.org/abc name

about

Libraries

⤵name


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!


Richard Wallis

Technology EvangelistOCLC

@rjw

OCLC ContactdagUtrecht 2 October 2012

The Simple Power of the Link

The Simple Power of the Link

Technology

Transcript of The Simple Power of the Link