The Social Semantic Web
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The Social Semantic Web



Washington DC Semantic Web Meetup / Library of Congress, Washington, DC, USA / 27th May 2010

Washington DC Semantic Web Meetup / Library of Congress, Washington, DC, USA / 27th May 2010



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  • Thanks to Alexandre Passant for some of the slides in there, re-used from our Social Semantic Web tutorial at ICWSM 2010 - full slideset at
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The Social Semantic Web The Social Semantic Web Presentation Transcript

  • The social semantic web John breslin
  • social semantics via lego
  • Social semantics via scribbles
  • Just boring old slides today... ...well, hopefully not *that* boring! image from
  • lecturer at Nui galway Engineering and informatics
  • Researcher at Deri, nui galway
  • Co-founder of
  • Editor at
  • Social media is exploding! image from
  • Breakdown of ugc visits •  .61 = social networks •  .11 = forums •  .11 = UG content sites, e.g. •  .10 = UG marketplaces, e.g. •  .03 = Blogs •  .01 = UG reviews, e.g. •  .01 = Wikis •  .02 = Other Text from
  • Sites go up... image from
  • Facebook and twitter
  • ...and sites come down image from
  • bebo
  • It's the social objects we create… • Discussions • Bookmarks • Annotations • Microblogs • Multimedia
  • …that connect us to other people
  • Social media sites are like data silos image from
  • Many isolated communities of users and their data image from
  • Need ways to connect these islands image from
  • Allowing users to easily move from one to another image from
  • Enabling users to easily bring their data with them image from
  • image from
  • Semantics
  • Social Semantic Web
  • Two-way street: semantic web can help social web, vice versa • Can Use semantic web to describe people, content objects and the connections that bind them all together so that social sites can interoperate via semantics • In the other direction, object-centered social websites can serve as rich social data sources for semantic applications image from
  • Foaf (friend of a friend)
  • What's foaf? • An ontology for describing people and the relationships that exist between them: – – Identity, personal profiles, social networks – Can integrate with other SW vocabularies – Used on LiveJournal, MyOpera,, MyBlogLog, hi5, Fotothing, Videntity, FriendFeed, Ecademy, Typepad image from
  • Distributed identities with FOAF
  • FOAF (Friend-of-a-Friend)
  • FOAF (Friend-of-a-Friend)
  • SIOC, pronounced shock image from
  • Semantically-Interlinked Online Communities (SIOC) • Goal of the SIOC ontology is to address interoperability issues on the Social Web • • SIOC has been adopted in a framework of 50 applications or modules deployed on over 400 sites • Web 2.0, enterprise information integration, HCLS, e-government
  • Some of the SIOC core ontology classes and properties
  • From last October 39
  • RDFA (Sioc, FOAF) in drupal 7 • Drupal is a cms used by various sites: –,,, • Five Alpha versions of drupal 7 released already, semantic web support built-in – Release candidate version on its way
  • Semantic search
  • Opo (Online presence ontology) • aims to unify presence information and status notification processes across different services: – Twitter, Facebook, Foursquare, etc. • Help solve the information overload issue at the same time, by providing a means to identify who / which community the information should reach: sharing spaces
  • MOAT (meaning of a tag) • • A model to define "meanings" of tags – SPARQL → • User-driven interlinking • Tagged content enters Linked Data web • Collaborative approach towards the sharing of meanings in a community image from
  • An ontology stack for the social semantic web
  • Distributed Architecture (Smob)
  • Semantic #hashtags
  • Stuff that looks exciting image from
  • Diaspora effort and
  • Appleseed project
  • OneSocialWeb
  • Openid connect "an Interoperable identity interchange protocol for the social web [...] all the technology is on the verge of being ready"
  • Facebook open graph • Allows metadata from external pages to be embedded (claimed) within facebook • E.g. metadata about a restaurant (name, location, contacts) could be imported into a facebook news feed via a like button • Good for facebook, good for the semantic web? Yes!
  • An object described using OGP
  • e.g. Linking ogp objects to blog posts / reviews
  • Twitter Annotations • forthcoming initiative by Twitter: – attach arbitrary metadata to any tweet – overall limit for the metadata payload – May be able to attach RDF-type statements • Going beyond annotating tweets with geotemporal information: – new types of / properties for tweets image from
  • image from What If your car could tweet
  • Everywhere Real-time streams image from
  • image from
  • our new book now at
  • /johnbreslin Slides at