Semantic Web For Distributed Social Networks

Semantic Web for Distributed Social Networks http://www.flickr.com/photos/matthewfield/ David Peterson BoaB interactive http://www.flickr.com/photos/matthewfield/

Semantic Web • What? • Hype - Scientiﬁc American 2001 • “... will unleash a revolution of new possibilities... ” • Reality - Scientiﬁc American 2007 • “The Semantic Web In Action”

http://www.ﬂickr.com/people/davidsethp/

Shared Meaning http://www.ﬂickr.com/people/davidsethp/

Information is object & collection based http://www.ﬂickr.com/photos/mcbeth/

Distributed Social Network • You own the data • You control access • You can pull it/change it • You can delete it • You can decide what is best • “YOU” http://www.ﬂickr.com/photos/tychay/

Ingredients • Shared Understanding • Central Identity • Global Graph

Shared http://www.ﬂickr.com/photos/belmore/

Tagging • Labelling our stuff • Now what? • What does ‘Paris’ and ‘Paris’ *really mean*?

Shared linking != shared understanding • technorati tags • Drupal, Wordpress, Live Writer, etc... • Creates some sort of emergent meaning, but still we are just talking about matching strings of characters :-(

Concept Tagging • Freebase

microformats to the rescue • Organic formation • Actual meaning is being encoded • Structure emerges http://www.ﬂickr.com/photos/samoube/

Now we are cooking with gas... shared meaning http://www.ﬂickr.com/photos/eole/

But wait. What happens when I want more... • hCard • hCalendar • hReview • hListing • hResume • XFN • rel-license http://www.ﬂickr.com/photos/jcocinero/

Vocabularies • Now we can describe anything but what do we name it? • Roll your own • Or better yet, re-use http://www.ﬂickr.com/photos/sir_ﬁsh/

Ontologies http://www.ﬂickr.com/photos/iskanderstruck/

Ontologies • Umbrella Ontologies help create strong and weak ties http://www.ﬂickr.com/photos/iskanderstruck/

Ontologies • Umbrella Ontologies help create strong and weak ties • UMBEL http://www.ﬂickr.com/photos/iskanderstruck/

Ontologies • Umbrella Ontologies help create strong and weak ties • UMBEL • Dbpedia http://www.ﬂickr.com/photos/iskanderstruck/

Ontologies • Umbrella Ontologies help create strong and weak ties • UMBEL • Dbpedia • OpenCyc http://www.ﬂickr.com/photos/iskanderstruck/

• http://www.visuwords.com/search.php

FOAF http://www.ﬂickr.com/photos/beija-ﬂor/

FOAF It’s all about who you know ... http://www.ﬂickr.com/photos/beija-ﬂor/

and who you don’t want to ...

• OpenID • RDFauth http://www.ﬂickr.com/photos/dan_dan/

http://www.ﬂickr.com/people/hotmeteor/

GLOBAL http://www.ﬂickr.com/people/19877537@N00/

GRAPH image: Cognitive Science Research Unit - Universite Libre de Bruxelles

“It's not the documents, it is the things they are about which are important. Obvious, really.” Tim Berners-Lee http://www.ﬂickr.com/people/tscarlisle/

From the web of documents to the web of things http://www.ﬂickr.com/photos/vardhana/

“If the graph of people is cool, imagine a graph of everything” Dries Buytaert

http://www.ﬂickr.com/people/mk1971/ “the value of your information grows exponentially with your ability to combine it with new information” – Henry Story, Sun Microsystems

Linked Data image: Richard Cyganiak - http://dowhatimean.net/

Mobile dbpedia

it's all coming together now

http://www.ﬂickr.com/photos/m500/ How can we build this thing?

Tools • Semantic Mediawiki • Drupal • Simile Exhibit & Timeline • D2RQ • PHP - ARC & Triplify • .Net - linq2RDF • Java - Sesame & Elmo

SMW • Structured data • Linked data • SPARQL querying • Semantic forms • Semantic maps

Chickipedia is the world's largest web-based, women-based, wiki-based database of hot chicks on the planet. It is entirely user generated, making it the ﬁrst female-only encyclopedia of the people, by the people, and for the people ext

The Trouble with SMW http://www.ﬂickr.com/people/davidsethp/

The Trouble with SMW • Why not use this as the only thing? http://www.ﬂickr.com/people/davidsethp/

The Trouble with SMW • Why not use this as the only thing? • Permissions, or actually, the lack thereof http://www.ﬂickr.com/people/davidsethp/

The Trouble with SMW • Why not use this as the only thing? • Permissions, or actually, the lack thereof • Almost impossible to really lock it down http://www.ﬂickr.com/people/davidsethp/

The Trouble with SMW • Why not use this as the only thing? • Permissions, or actually, the lack thereof • Almost impossible to really lock it down • lots of hacking and then patching http://www.ﬂickr.com/people/davidsethp/

The Trouble with SMW • Why not use this as the only thing? • Permissions, or actually, the lack thereof • Almost impossible to really lock it down • lots of hacking and then patching • and still things come through http://www.ﬂickr.com/people/davidsethp/

Drupal 5

Drupal 5 • FOAF

Drupal 5 • FOAF • Neologism

Drupal 5 • FOAF • Neologism • RDFCCK

Drupal 5 • FOAF • Neologism • RDFCCK • Open Calais

Drupal 5 • FOAF • Neologism • RDFCCK • Open Calais • MOAT

The trouble with Drupal 5 http://www.ﬂickr.com/people/davidsethp/

The trouble with Drupal 5 • It’s not 6 http://www.ﬂickr.com/people/davidsethp/

The trouble with Drupal 5 • It’s not 6 • Weird to-and-fro, confusion http://www.ﬂickr.com/people/davidsethp/

The trouble with Drupal 5 • It’s not 6 • Weird to-and-fro, confusion • Some modules no longer maintained http://www.ﬂickr.com/people/davidsethp/

The trouble with Drupal 5 • It’s not 6 • Weird to-and-fro, confusion • Some modules no longer maintained •A lot of the good stuff is in 6 & 7 http://www.ﬂickr.com/people/davidsethp/

Drupal 6 http://www.ﬂickr.com/photos/iskanderstruck/

Drupal 6 • Way better than 5 http://www.ﬂickr.com/photos/iskanderstruck/

Drupal 6 • Way better than 5 • RDF API http://www.ﬂickr.com/photos/iskanderstruck/

Drupal 6 • Way better than 5 • RDF API • SPARQL http://www.ﬂickr.com/photos/iskanderstruck/

Drupal 6 • Way better than 5 • RDF API • SPARQL • Open Calais http://www.ﬂickr.com/photos/iskanderstruck/

Drupal 6 • Way better than 5 • RDF API • SPARQL • Open Calais • RDFCCK http://www.ﬂickr.com/photos/iskanderstruck/

Drupal 6 • Way better than 5 • RDF API • SPARQL • Open Calais • RDFCCK • Exhibit http://www.ﬂickr.com/photos/iskanderstruck/

The trouble with 6!! http://www.ﬂickr.com/people/psmithson/

The trouble with 6!! • It is not 5! http://www.ﬂickr.com/people/psmithson/

The trouble with 6!! • It is not 5! • Core features are still in RC and beta stages??? WTF http://www.ﬂickr.com/people/psmithson/

The trouble with 6!! • It is not 5! • Core features are still in RC and beta stages??? WTF • Some important modules are still 5 only http://www.ﬂickr.com/people/psmithson/

The trouble with 6!! • It is not 5! • Core features are still in RC and beta stages??? WTF • Some important modules are still 5 only • Panels, FOAF, MOAT http://www.ﬂickr.com/people/psmithson/

The trouble with 6!! • It is not 5! • Core features are still in RC and beta stages??? WTF • Some important modules are still 5 only • Panels, FOAF, MOAT • A lot of the good stuff is coming in 7 (sound familiar?) http://www.ﬂickr.com/people/psmithson/

Why can’t we be friends... http://www.ﬂickr.com/photos/greentea/

ARC

Triplify

SPARQL queries • Federated / distributed search • Structured search • Security via HTTP auth http://www.ﬂickr.com/photos/girl-inchoate/

RDFa and microformats • Indexed by Sindice and Search Monkey • Sindice is the global query engine of the Structured Web (aka Semantic Web)

Some RDFa users • Creative Commons For instance, Creative Commons has recently started to deploy RDFa across the web in the form of copyright and licensing information Every time a Creative Commons user selects • DIGG CC license, the generated HTML badge contains RDFa markup indicating the nature of the license. The Creative Commons Infobar uses this data to selectively trigger on pages that declare their license using structured markup: DIGG

RDFa • What does it look like?

• Web links for presentation can be found at http://davidseth.net/ http://www.ﬂickr.com/people/davidsethp/

Semantic Web For Distributed Social Networks

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