The Simple Power of the Link

The Simple Powerof the Link

Richard WallisEvangelist

and Founder

http://dataliberate.com

Monday, 6 February 12

http://www.flickr.com/photos/34497358@N06/6251662291










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 RDFaJQuery

HTML5

CSS3

XML JSON

HTML

The


Web?

http URLHTML

The


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




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

Document Document





Document Document





Document Document

http://example.com/page1





Document Document

http://example.com/page1

http

://eg

.co.u

k/lis

t


The Web?

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

Link


Web?

Linking at it’s corehttp://www.flickr.com/photos/leapkye/4407661949

The


Web?

Linking at it’s corehttp://www.flickr.com/photos/leapkye/4407661949

ThePowerful


Web?

©AllPosters.com

Linking at it’s core

link

ThePowerful


WebThe


WebThe Semantic


Flying Cars Technology

Ai

WebThe Semantic

Got a bad press


Linked Data


Linked DataBuilt on Semantic Web Standards


Linked DataBuilt on Semantic Web Standards

All about identifying and linking things

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



⤵

mass

28801.0

Apollo 11 CSM⤵name



⤵

mass

28801.0

Apollo 11 CSM⤵ Columbia⤵name name



⤵⤵

mass

28801.0


launch.../1969-059A

../launch/1969-059



⤵⤵

mass

28801.0


launch16 July 1969⤵

date

.../1969-059A

../launch/1969-059



⤵⤵

mass

28801.0



date

⤵site

.../1969-059A

../launch/1969-059

Cape Canaveral



⤵⤵

mass

28801.0



date

⤵site

N 28° 27' 31''⤵lat

.../1969-059A

../launch/1969-059

Cape Canaveral



⤵⤵

mass

28801.0



date

⤵site

N 28° 27' 31''

W 80° 31' 59''

⤵⤵lat

long

.../1969-059A

../launch/1969-059

Cape Canaveral



⤵⤵

mass

28801.0



date

⤵site

RDF

N 28° 27' 31''

W 80° 31' 59''

⤵⤵lat

long

.../1969-059A

../launch/1969-059

Cape Canaveral



⤵⤵

mass

28801.0



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> 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''” .



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 is still the same thing














Linked Data Merging


Linked Data Merging


Linked Data Merging


Linked Data Merging


Linked Data Merging


Linked Data Merging


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





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


Data Open and/or Linked


Data Open and/or Linked1. 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


Data Open and/or Linked

Paul Walk - UKLON

1. Data can be open, while not being linked


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


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

Linked DataMonday, 6 February 12

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

Linked DataMonday, 6 February 12

Linked DataThe WebPowerful

©AllPosters.com

at it’s core

link

LinkingMonday, 6 February 12

Linked DataThe WebPowerful

©AllPosters.com

at it’s core

link

TriplesMonday, 6 February 12


Richard WallisTechnology Evangelist

and Founder




Richard WallisTechnology Evangelist

and Founder


http://www.slideshare.net/rjw


This work is Copyright © 2011 Talis Systems Limited.It is licensed under the Creative Commons Attribution 3.0 Unported License.Full details at: http://creativecommons.org/licenses/by/3.0/

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The Simple Power of the Link

Technology

linktext text texttext

orgspacecraft1969 http

attributes http

html http urlmonday

semantic web standardsall

semantic web standardsmonday

csm csm

csm columbianame28801