Presentation about http://worldwidesemanticweb.org/ given at SugarCamp#3 in Paris on April 12-13. The slides introduce the activities of the WWSW group centred around adapting Semantic Web technologies to be usable in challenging conditions.

1. Let’s Downscale the
Semantic Web !
Christophe Guéret
@cgueret
April 12-13 2014

2. Set of tools and best practices to publish and
link semantically rich (self-explanatory),
structured, data using W3C standards
Related keywords: Linked Data, Open Data,
Linked Open Data, Ontologies, Description
Logic, Reasoning, RDFa, SPARQL, RDF, …
Very nice fit for our DownScale goals
“Semantic Web” ?

3. Publish data as Web sites
Web of Documents Web of Data
href
href
http://dbpedia.org/resource/Amsterdam
dbpedia:Netherands
ex:locatedIn
“Amsterdam”@nl
ex:name

4. DownScaling ?
The opposite of UpScaling ;-)

5. Example data sharing scenario
Interesting
open data
Users

6. We build this ...
Web hosted
service
Interesting
open data
Users
Data
flow

7. whereas the situation is like that...
Web hosted
service
Interesting
open data
Users
Data
flow
???

8. but this is what users actually need
Web hosted
service
Interesting
open data
Users
Data
flow

9. Nowadays, everything scales-up
Information systems are designed to
● Accomodate a target community of users
○ Least common denominator features
● Manage large amount data and users
○ Big servers, Big data
● Work in connected ways (with offline
caches)
○ Cloud-based servers + connectivity

10. … or sometimes does not
● No stable high speed internet
○ low bandwidth, sneaker nets, local mesh …
● Different languages or literacy levels
○ local dialects, …
● Different conceptual models
○ “big city” means something very different in China
and in Europe

11. A solution ? Downscale!

12. Research agenda around 4 elements

13. Infrastructures
Systems optimised for decentralised and “off-
line by default” use
Entity Registry
System (ERS)
General purpose
Web-less Linked
Open Data
platform
Adds Semantic Web tooling
to Sugar

14. Entity Registry System
● Nodes have 3 possible roles
○ Contributor, Bridge, Aggregator
● Only contributors store data (statements)
○ private, cache and public stores
Drawing from http://slides.com/cgueret/ers

15. Interfaces
Voice and visual centric interfaces that blend-in
and are usable in several (local) languages
Listen to market prices Share news Plan community meetings

16. RadioMarché
● Farmers use basic phones to interact with
the data
● Designed to blend-in (living labs approach)

17. Relevancy
Take local meanings into account, give priority
to the most relevant data
SampLD
Find out what part of a
dataset is most relevant
to store
DataHives
Reasoner that derives
facts based on local
meaning

18. Data
Integrate development related datasets with
other data published as Linked Open Data
API2LOD
Expose the content of
any API as Linked Open
Data
IATI2LOD
Expose the content of
the IATI registry as
Linked Open Data
+ participation to the Land
Portal re-development

19. IATI2LOD
● Put IATI data in context of other data sets

20. Jump in!
● ICT4D course at the VU University
Amsterdam + ICT4D event on May 16
● Discussion groups
○ Development Linked Data W3C community group
○ WorldWideSemanticWeb google group
● Upcoming Downscale2014 and LD4D 2014