Download - Let's downscale the semantic web !
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Let’s Downscale the Semantic Web !Christophe Guéret @cgueret
April 12-13 2014
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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” ?
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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
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DownScaling ?
The opposite of UpScaling ;-)
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Example data sharing scenario
Interesting open data
Users
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We build this ...
Web hosted service
Interesting open data
Users
Data flow
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whereas the situation is like that...
Web hosted service
Interesting open data
Users
Data flow
???
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but this is what users actually need
Web hosted service
Interesting open data
Users
Data flow
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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
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… 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
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A solution ? Downscale!
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Research agenda around 4 elements
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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
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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
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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
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RadioMarché
● Farmers use basic phones to interact with the data
● Designed to blend-in (living labs approach)
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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
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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
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IATI2LOD
● Put IATI data in context of other data sets
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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