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Copyright 2005 Digital Enterprise Research Institute. All rights reserved.
www.deri.org
SIOC: Semantic Webfor
Social Media Sites
Uldis Bojārs
BarCamp Ireland 3Dublin - April 21, 2007
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Why Semantic Web?
• Semantic Web facilitates:– Innovation in Social Tools
• Provides rich, structured data– from Social Media Sites:– Blogs, Bulletin boards, Wikis, ...
• Data that can be used in:– Web 2.0 applications (Mash-Ups, ...)– Social Media integration and search
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What is Semantic Web?
• Layer on the Web – precise, structured information on:– Objects on the web and in the real world– Relations between them
• Resource Description Framework (RDF)– Foundation of the Semantic Web– Graph with objects (nodes) and relations between them
• Easy Integration of Data– Data of different nature (FOAF, SKOS, RSS, …)
• SIOC – model of data – for social media sites
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What is DERI?
• Digital Enterprise Research Institute• Established at NUI Galway in June 2003• One of the largest “Semantic Web” research institutes• About €25 million in funding from EU FP6, SFI, EI• Now has 80 members (staff and students)• Three main research clusters:
– Semantic Web– Semantic Web Services– E-Learning with Semantics
• About 100 project partners
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Evolution of online community sites
Online community sites:• Provide a valuable source of information• May contain rich meta-information • But are isolated from one another:
– Many sites discussing complementary topics
Next steps:• Connect sites together• Add more value:
– Let other sites know more about the structure and contents– Make more use of tagging and semantic metadata
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Limitations of Bulletin Boards
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What is SIOC?
• Semantically-Interlinked Online Communities (SIOC)• Connecting forums, posts from many types of online
communities (blogs, forums, mailing lists, etc.)• Interesting possibilities:
– Distributed linked conversations– Decentralised discussion channels and communities– “I […] think the concept is HOT” – Robert Douglass, Drupal
Developer– “It just dawned on me that the burgeoning SIOC-o-sphere
(online communities exporting and exposing content via SIOC Ontology) is actually: Blogosphere 2.0” – Kingsley Idehen, Founder and CEO of OpenLink Software
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The Main Concepts in SIOC
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How can SIOC data be used?
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SIOC Tools and Data
Demo of a WordPress SIOC plugin• + Semantic Radar Firefox extension
Now we’ve got the data.
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SIOC Tools and Data
Demo:• WordPress SIOC plugin
– Creates data “pages” for all blog pages
Now we’ve got the data.
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Using RDF – well, it’s very simple !!!
• Python:
import RDF # Redland Python bindings
m = RDF.Model()
m.load('file:///data.rdf')
for statement in m:
print statement
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SIOC Tools and Data
Demo:• WordPress SIOC plugin
– Creates data “pages” for all blog pages
• Semantic Radar Firefox extension– Detects data on web pages
• SIOC Browser (in Python)– Data are linked – follow “rdfs:seeAlso” links to see more
• SIOC Explorer (in Ruby on Rails)– Faceted browsing
SIOC makes data available:• Opens up Social Media sites• Make Your Own Applications !!!
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SIOC browser (4)
A SIOC browser
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Browsing SIOC with TimeLine
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Other SIOC community applications
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The path to Semantic Web 2.0
• The Semantic Web effort is mainly towards producing standards and recommendations that will interlink applications
• The Web 2.0 meme is about providing user applications
• Not mutually exclusive:– http://www.oreillynet.com/xml/blog/2005/10/
is_web_20_killing_the_semantic.html– With a little effort, many Web 2.0 applications can and do use
Semantic Web technologies to great benefit– Take Web 2.0 and combine them with the Semantic Web
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Thank You!
SIOC• http://sioc-project.org/• SIOC-Dev mailing list
on Google Groups
Semantic Web FAQ• http://www.w3.org/2001/sw/SW-FAQ
RDF Tools: Redland (...), Jena (Java), ActiveRDF (Ruby), ...
Blog: http://captsolo.net/info/
E-mail: [email protected] (aka CaptSolo)