Linked Open Data and data-driven journalism

Linked Open Data –why media/journalists should care and make use of it!
PiaVirmalainenJøsendal

Today´s agenda..

Take a moment and think…
“OH, I wish i could see connections between this and this and this and that
without searching everywhere and drawing my own mindmap…!”

What is Linked Open Data?
Guidelines to publish, structure and link data on the web
Web of data
Semantic Web technologies
“Linked data is the first practical expression of the semantic
web, useful and doable today, and applicable to all forms
of data.” (http://structureddynamics.com/linked_data.html)

1st
open data and linked data
Open data
data available without restrictions – independent of format
Linked data
links data together by relations to contextualizethem
(I Norge brukes også Offentlige data vekselvis med Åpne data og Public SectorInformation (PSI))

2nd
linked data and semantic web
Linked data
Semantic web
- a machine readable set of standards URI, HTTP, RDF, SPARQL (W3C)
- a vision to improve meaning in content on the web by defining relations between data

Linked open data as the original web
Semantic web enables
a linked open data web

What is Linked Open Data about?

Bottom line
The more data being provided and made available to the public as OPEN, LINKED and accessible with semantically defined content..
…the smarter our applications can be..
Source: http://www.readwriteweb.com/archives/open_data_linked_data_semantic_web.php

From databases to graphs

Hvorfor?

Group & define

The challenge with hierarchies and classification
People look for patterns
Interpretation has always been difficult
As always – people are different and as situations change, context changes

How about…
Don’t put data into tight boxes that are hard to reach down into and drag something out of…
the coat most often gets wrinkled…
A triangle doesn’t fit in a round hole..
And create a nice pair of shaded sunglasses for the data set to wear at appropriate occations…?

17
Linked open data offers a dynamic set of facets
LOD is a line of principles to align data
 manypair of glasses to look at the material
An architecture
 presented like ONE archive

Oktober 2007
500 million triples
Cirka 120 000 links between resources

September 2010

Challenging assembly of information?

Using Linked Data

Confused?

Growth of Linked Open Data
http://www.slideshare.net/init_brussels/cyganiakrichardstateofplaylod

Government projects

Large potential for reuse

Existing useful vocabularies
Therearealready a bunchofwellknownvocabularies to useoutthere:
Simple KnowledgeOrganisation System SKOS,
Dublin Core DC,
Friend-of-a-friend FOAF,
CreativeCommons CC,
MusicOntologyMO

Creative use of weather data
Based on data from YR

Planning the weather…

http://data.nytimes.com/

]init[ - Services for the eSociety
Working “to support society's protagonists and organisations in their leading role in the modern society”
eGovernment and eBusiness

Enterprise Linked Data
Is there data which, if published, could make your business more efficient, or generate value, whether directly or indirectly?

Vocabulary “GoodRelations” for eCommerce

A concluding rehearsal..
Try to…
..listen to the person next to you..
..when he/she starts to clap..
..and you yourself start to clap..
..and try to clap at the same pace..
..untill..

Get lodding!
“to lod (verb): lod, lodded, lodding – the act of publishing linked open data on the World Wide Web, adhering to the rules of linked data.” (http://kantenwerk.org/2009/03/16/there-is-probably-no-semantic-web/)

credits
Flower analogy – Dr. Hans Rosling/ KarolinskaInstitutt
Social networks – David Simons/The economist
Video Tim Berners-Lee/TEDTalks
Weather examples – Erik Bolstad/NRK

Thank you for your attention!
questions?
To contact me:
Name: PiaVirmalainenJøsendal
Twitter: mspjvj

Mashups, APIs andlinked open data
– They do not work with clients that have not been
designed with the speciﬁcAPI in mind.
– Their content cannot be accessed by search engines
and other generic web agents.
– Each mashup only allows access to data from
a limited number of sources chosen by the developer.
In contrast, information on the Semantic Web can
be used by generic clients, including RDF browsers,
RDF search engines, and web query agents.
The RDF Book Mashup: From Web APIs to a Web of Data
Christian Bizer, Richard Cyganiak, and Tobias Gauß

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Linked Open Data and data-driven journalism

by Pia Jøsendal

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