The Single Power of Link - Richard Wallis

The world’s libraries. Connected.

The Simple Power Of The Link

OCLC Asia Pacific Regional Council Meeting Kuala Lumpar, 4 September 2012

Richard Wallis

Technology EvangelistOCLC

@rjw





• What is Linked Data

• Who is using it

• What are the benets

• OCLC and Linked Data


Linked Data

• What is Linked Data

• Who is using it

• What are the benets

• OCLC and Linked Data


Web?Semantic


Web?The


Web?

HTML

The


Web?

URL

HTML

The


Web?

http

URL

HTML

The


Web?

http

URL

Flash

Javascript

DOM

CSS

Ajax

SEO

Microformats RDFa

JQuery

HTML5

CSS3

XMLJSON

HTML

The


Web?

http URLHTML

The

Web?

HTML http URL

The

Web?

HTML http URL

Text text texttext text linktext. Text, texttext text, text.Text text - texttext - text text text.

Document

The

Web?

HTML http URL


Text text texttext text.Text: • link • linkText text, text.Text text - linktext - text text.

Document Document

The

Web?

HTML http URL



Document Document

The

Web?

HTML http URL



Document Document

http://example.com

/page1

The

Web?

HTML http URL



Document Document

http://example.com

/page1

http://eg.co.uk/list

The

Web?

http://example.com/page1 http://eg.co.uk/listLink

The

Linking at it’s core

link

http://www.flickr.com/photos/leapkye/4407661949

Web?The


link

http://www.flickr.com/photos/leapkye/4407661949

PowerfulWeb?The

©AllPosters.com


link

PowerfulWeb?The

WebThe

WebThe

Semantic

Flying Cars Technology

Ai

WebThe

Semantic

Got a bad press

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


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.../


⤵mass

28801.0

Apollo 11 CSM

⤵Columbia⤵

name name.../


⤵⤵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


../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://bbc.co.uk/nature/species/Mallard


http://bbc.co.uk/nature/species/Mallard SameAs


http://bbc.co.uk/nature/species/Mallard http://dbpedia.org/resource/MallardSameAs



http://www.w3.org/2002/07/owl/sameAs



primaryTopic http://blx1.bto.org/birdfacts/../bob1860.htm



depiction http://open.live.bbc.co.uk/. mallard_1.jpg

primaryTopic http://blx1.bto.org/birdfacts/../bob1860.htm

http://www.flickr.com/photos/jolieodell/4540783805

http://www.flickr.com/photos/jolieodell/4540783805

http://www.flickr.com/photos/ferretsunlimited/499495786

Linked Data

http://www.flickr.com/photos/ferretsunlimited/499495786

Linked Data

Linked Data WebThe

©AllPosters.com

⤵

⤵⤵Linked Data Web

The

©AllPosters.com

⤵


The

©AllPosters.com

at it’s core

link

Linking

⤵


The

©AllPosters.com

at it’s core

link

Triples

Data Open and/or LinkedData Open and/or Linked

Data Open and/or Linked

1. Data can be open, while not being linked




2. Data can be linked, while not being open





3. Data which is both open and linked is increasingly viable



Paul Walk - UKLON



3. Data which is both open and linked is increasingly viable

4. The Semantic Web can only function with data which is both open and linked



Linked Data


Linked DataVIAF

http://viaf.orgHTML, RDF/XMLLicense: ODC-BY


Linked DataVIAF


Deweyhttp://dewey.infoHTML/RDFa, RDF/XML, Turtle, JSON - SPARQLLicense: CC BY-NC-ND


Linked DataVIAF


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




Download file




Download file• Most widely held works

(250+ holdings)





(250+ holdings)

• 1.2 Million resources(80 million triples)





(250+ holdings)


• Schema.org + Library





(250+ holdings)


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





(250+ holdings)


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




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



OCLC Asia Pacific Regional Council Meeting Kuala Lumpar, 4 September 2012

Richard Wallis

Technology EvangelistOCLC

@rjw