linked data: an introduction for gis folks

Linked Data

Richard WallisTechnology EvangelistTalis

[email protected]

@rjw

Monday, 25 April 2011

mailto:[email protected]


Linked Data


Library of Congress: Fred Hultstrand and F.A. Pazandak Photograph Collection

Started some time ago...

The Linked Data Journey


Web


The Web of Documents



A global network of linked documents

A place where anyone can say anything about anything

A vast collection of human-readable knowledge (and opinion)

Documents are linked, but links are not qualified


Network of Linked Documents

unqualified links


Network of Linked Documents

unqualified links

no such thing as a negative linkMonday, 25 April 2011

Semantic Web


2001 - 2007


2001 - 2007

Semantic Web Research

Standards BuildingRDF SPARQL


Linked Data

http://blog.ted.com/2009/03/13/tim_berners_lee_web/


http://tinyurl.com/ldlibraries

http://tinyurl.com/ldlibraries


A global network of linked documents


A vast collection of human-readable knowledge (and opinion)

Documents are linked, but links are not qualified


A global network of linked statements


A vast collection of machine-readable knowledge (and opinion)

Statements are linked, and links are qualified

The Web of Data


Tim Berners-Lee Weaving

the Web

Mark Fischetti

Amazon.com

⤵⤵ ⤵ Harper Paperbacks

⤵Author

Author Published by

Sold by


Tim Berners-Lee Weaving

the Web

Mark Fischetti

Amazon.com

⤵⤵ ⤵ Harper Paperbacks

⤵Author

Author Published by

Sold by

Linked Data


Linked Data isn’t about publishing data...

... it’s about describing ducks!

Tom ScottLead Developer BBC Wildlife Finder

Quoting:Rob Styles, Talis


http://www.flickr.com/photos/eyesore9/2341218021/

Linked Data


http://www.flickr.com/photos/glenscott/1338973222/http://www.flickr.com/photos/glenscott/1338973222/

Linked Data

InterconnectedNodes

GlobalData

Graph


http://www.flickr.com/photos/kerry1691/131951310/http://www.flickr.com/photos/kerry1691/131951310/

Linked Data

InterconnectedNodes

GlobalData

Graph


InterconnectedNodes

Global

Graph


The challenge in using the majority of the datasets available today seems to be

taking them from whatever existing format they are in, be it CSV, Excel,

HTML tables or PDF, and transforming them into something that is more

programatically accessible.

Jeff GilfeltASBOrometer


Jeff GilfeltASBOrometer


How to build my API...



Functional



Functional

Elegant



Functional

Elegant

Unique



Functional Monday, 25 April 2011


Functional

Elegant



Functional

Elegant

Familiar


Functional

Elegant

Familiar

How to build a Linked Data API...


The Website is the API...


http://www.flickr.com/photos/71419271@N00/2455514690/


http://www.flickr.com/photos/71419271@N00/2455514690/

Low barriers to your dataMonday, 25 April 2011

Evolution


Global Flow of Data


Global Flow of Data

Linked in?...


Global Flow of Data

Rushing past?....

Linked in?...


http://www.flickr.com/photos/glenscott/1338973222/



Linked Data



Linked Data

•Web native - graph based



Linked Data


•Open web standards - RDF



Linked Data



•Distributed



Linked Data



•Distributed

•Self describing



Linked Data



•Distributed

•Self describing

•Extendable - Linkable - Mergeable



Linked Data



•Distributed

•Self describing


•Data is the API



Linked Data



•Distributed

•Self describing


•Data is the API

•+ SPARQL query languageMonday, 25 April 2011

http://www.flickr.com/photos/stawarz/3300414267




Help with all this?





Help with all this?

Community Groups

Linked Data Meetups


Open Source




Help with all this?

Community Groups

Linked Data Meetups


Training CoursesMentoring

Open Source

Consultancy

Events

Linked Data HostingMonday, 25 April 2011



Linked Data

Richard WallisTechnology EvangelistTalis

[email protected]

@rjw




linked data: an introduction for gis folks

Technology

linked datahttp

linked datamarkfischettiauthor

linked datamonday

linked data journey

linked data isnt

web of data

opinion documents

web of documentsmonday