1. SemanticXO
connecting the XO with the
World’s largest information network
Christophe Guéret, Stefan Schlobach
c.d.m.gueret@vu.nl, s.schlobach@vu.nl
Vrije Universiteit Amsterdam (Nederlands)
http://www.slideshare.net/cgueret/
International Conference on e-Technologies and Networks for Development
(ICeND2011)
Christophe Guéret - @cgueret (VUA) SemanticXO ICeND2011 - August 4, 2011 1/25

2. The next 20 minutes
Semantic Web + XO = SemanticXO
One Laptop Per Child and the XO
Linked Data / the Semantic Web
Goals of the project SemanticXO
Publish and Consume Linked Data with the XO
Your questions, remarks, suggestions !
Work in progress
Christophe Guéret - @cgueret (VUA) SemanticXO ICeND2011 - August 4, 2011 2/25

3. One Laptop Per Child
Christophe Guéret - @cgueret (VUA) http://www.flickr.com/photos/erikcharlton/3336627233
SemanticXO ICeND2011 - August 4, 2011 3/25

4. One Laptop Per Child (OLPC)
“Empower the world’s poorest children through
education [by providing them] with a rugged, low-
cost, low-power and connected laptop” – laptop.org
Mission principles
1.Every child owns his laptop
2.Action focused on early education (6-12)
3.No one gets left out
4.Connected device
5.Open source software free to grow and adapt
Christophe Guéret - @cgueret (VUA) SemanticXO ICeND2011 - August 4, 2011 4/25

5. The XO laptop and Sugar
Collaborative
learning
Activities instead
of applications
Journal of usage
(critical thinking)
http://www.flickr.com/photos/curiouslee/3985626381/
Christophe Guéret - @cgueret (VUA) SemanticXO ICeND2011 - August 4, 2011 5/25

6. Example of current capabilities
Fully featured web browser
Snapshot of Wikipedia
Activities running simultaneously can
share data
Bulk export of journal entries (for backup)
The XO is Web 2.0 ready : create and share data in data silos
Christophe Guéret - @cgueret (VUA) SemanticXO ICeND2011 - August 4, 2011 6/25

7. Linked Data (aka Semantic Web)
Christophe Guéret - @cgueret (VUA) http://www.flickr.com/photos/erikcharlton/3337465138
SemanticXO ICeND2011 - August 4, 2011 7/25

8. Linked Data
“Using the Web to connect related data that wasn't
previously linked, or (...) lower the barriers to linking
data currently linked using other methods” –
linkeddata.org
Publish data on Internet as already done for documents
Design principles
1. Use URIs as names for things
2. Use HTTP URIs so that people can look up those names
3. Bind useful information to the URI, using the standards
4. Include links to other URIs
Christophe Guéret - @cgueret (VUA) SemanticXO ICeND2011 - August 4, 2011 8/25

9. “Dar Es Salaam” in the Cloud
http://dbpedia.org/resource/Dar_es_Salaam
Christophe Guéret - @cgueret (VUA) SemanticXO ICeND2011 - August 4, 2011 9/25

10. Relation with “Air Tanzania”
Air Tanzania has its HQ in Dar Es Salaam
Christophe Guéret - @cgueret (VUA) SemanticXO ICeND2011 - August 4, 2011 10/25

11. Why Linked Data ? (1/2)
+ Data
Data integration realised at application level
Inspired from http://www.slideshare.net/ABLVienna, Icons by http://yumakino.deviantart.com/
Christophe Guéret - @cgueret (VUA) SemanticXO ICeND2011 - August 4, 2011 11/25

12. Why Linked Data ? (2/2)
Application
Integration on data level
Inspired from http://www.slideshare.net/ABLVienna, Icons by http://yumakino.deviantart.com/
Christophe Guéret - @cgueret (VUA) SemanticXO ICeND2011 - August 4, 2011 12/25

13. Open Data
“A piece of content or data is open if
anyone is free to use, reuse, and
redistribute it — subject only, at most, to
the requirements to attribute and share-
alike” – opendefinition.org
Open Data published by UK, USA, France,
Finland, Ireland, Kenya, …
http://datacatalogs.org/
Christophe Guéret - @cgueret (VUA) SemanticXO ICeND2011 - August 4, 2011 13/25

14. Linked Open Data Cloud
Linking Open Data cloud diagram, by Richard Cyganiak and Anja Jentzsch. http://lod-cloud.net/
Christophe Guéret - @cgueret (VUA) SemanticXO ICeND2011 - August 4, 2011 14/25

15. SemanticXO
Christophe Guéret - @cgueret (VUA) SemanticXO http://www.123rf.com/
ICeND2011 - August 4, 2011 15/25

16. SemanticXO
Goal: make the XO ready for the Web 3.0
by extending its software stack
OLPC contributor project started in
October 2011 for 12 months
http://semweb4u.wordpress.com
Christophe Guéret - @cgueret (VUA) SemanticXO ICeND2011 - August 4, 2011 16/25

17. What is there to expect ?
Benefits for the operating system
Flexible and dedicated data storage solution
Benefits for activities developers
Easier data access and integration
Access to the content of the LOD Cloud
Benefits for end users
Increased sharing opportunities
Christophe Guéret - @cgueret (VUA) SemanticXO ICeND2011 - August 4, 2011 17/25

18. How to do it ?
Implement a software stack
“Triple store” to store the data
Interface to publish/consume data
HTTP server Programming Interface (API)
Triple
store and files
Christophe Guéret - @cgueret (VUA) SemanticXO ICeND2011 - August 4, 2011 18/25

19. Example of application
Knowledge Acquisition of traditional Amerindian
World views using Serious Games
Christophe Guéret - @cgueret (VUA) SemanticXO ICeND2011 - August 4, 2011 19/25

20. Under the hood : data model
Resources and relations
Christophe Guéret - @cgueret (VUA) SemanticXO ICeND2011 - August 4, 2011 20/25

21. Under the hood : data stored
Set of triples (SPO)
Same structure everywhere in the Cloud
e.g. Can be linked to cities for provenance
Subject Predicate Object
olpc:resource/a05864b4 rdf:type olpc:Item
An olpc:resource/a05864b4 olpc:name "image114"
item olpc:resource/a05864b4 olpc:hasDepiction "image114.jpg"
olpc:resource/a82045c2 rdf:type olpc:Box
A box olpc:resource/a82045c2 olpc:hasItem olpc:resource/a05864b4
olpc:resource/78cbb1f0 rdf:type olpc:Box
... ... ...
Christophe Guéret - @cgueret (VUA) SemanticXO ICeND2011 - August 4, 2011 21/25

22. New data flows
Data distribution Easy access
Christophe Guéret - @cgueret (VUA) SemanticXO ICeND2011 - August 4, 2011 22/25

23. Partnership with W4RA-VOICES
Web alliance for Regreening in Africa (W4RA)
“initiative to help extend the Web benefits of the
knowledge society and economy to people in
rural communities in Africa”
http://www.w4ra.org/
http://vimeo.com/26520353
Project VOICES funded by European Union
Christophe Guéret - @cgueret (VUA) SemanticXO ICeND2011 - August 4, 2011 23/25

24. More about W4RA-VOICES
Aimed at expanding knowledge creation and
sharing, especially in poor communities in Africa,
with have limited access to the Web.
Use voice technologies, mobile phone and
community radio for communication and access
to information
Working to create access to the Linked Open
Data and to create an Open Web of Speech
Use triple stores and RDF for spoken data
Christophe Guéret - @cgueret (VUA) SemanticXO ICeND2011 - August 4, 2011 24/25

25. Take home message
Linked Data = best practices for publishing
and interlinking structured data on the Web
Web scale data sharing
Lots of data published as Linked Data
World's largest information network
Linked Open Data can contribute to
development with more, easier, data
sharing
Christophe Guéret - @cgueret (VUA) SemanticXO ICeND2011 - August 4, 2011 25/25