How did we get here?
Rise of the ‘social network’ site Parallel rise of key ‘open’ technologies 2008 is the year it all opens up... Brief history of the Semantic Web project briefer history of Social Network sites impact of OpenID and OAuth
“To a computer, the Web
is a ﬂat, boring world, devoid of “For example, a document might describe a person. meaning. This is a pity, as in fact documents on the Web The title document to a house describes a house and describe real objects and imaginary concepts, and give also the ownership relation with a person.” particular relationships between them.” “Adding semantics to the Web involves two things: allowing documents which have information in machine-readable forms, and allowing links to be created with relationship values. [this will] help us exploit the information to a greater extent than our own reading.” Tim Berners-Lee quot;W3 future directionsquot; keynote - 1st World Wide Web Conference Geneva, May 1994
The Semantic Web project: ‘let
machines use the claims made in Web pages’ what objects do they describe? what relationships do they claim? who made the claims? what other claims support them? Convergence ’08: Who made the claims? (OpenID) What about private data? (OAuth) Better publishing in HTML? (Microformats/RDFa) Querying all this data? (W3C SPARQL)
A is for... F OA
F M F H P O S C XM P P K A F L E O L V S N N S P S I OC A D A R D F OA U T H Q O L H C A R D M C
FOAF is a project about
sharing information in the Web. It's about ways of describing things using computers, so that those descriptions can be linked together, mixed up with other data, and searched. Friend of a Friend People, groups, accounts, photos, IM, life on the Web. Machine-readable pages, de-centralised, freely extensible.
Everyone’s connected? Don’t say it,
show it: ...the evidence friendship leaves in the world and Web Work. Fun. Beer. Travel. Writings. Events. Music. Photos. Life. “Ordinary life is pretty complex stuff.”- Harvey Pekar
Oracle “Oracle Spatial 11g introduces
the industry's ﬁrst open, scalable, secure and reliable RDF management platform. Based on a graph data model, RDF triples are persisted, indexed and queried, similar to other object-relational data types. Application areas include Social Network Applications, Friend of a Friend applications, social network tracking and navigation common in security and intelligence applications” (competing with e.g. OpenLink and numerous opensource systems)
FOAF/XFN in Google Social Graph
API: 'The Social Graph API makes information about the public connections between people on the web more easily available.' Based on open standards ... Google “currently indexes the public Web for XHTML Friends Network (XFN), Friend of a Friend (FOAF) markup and other publicly declared connections. By supporting open Web standards for describing connections between people, web sites can add to the social infrastructure of the web.”
FOAF/RDFa in Yahoo search Without
a killer semantic web app for consumers, site owners have been reluctant to support standards like RDF, or even microformats. We believe that app can be web search. ...we plan to support vocabulary from Dublin Core, Creative Commons, FOAF, GeoRSS, MediaRSS, and others. ... we will support RDFa and eRDF markup to embed these into existing HTML pages
OpenID & OAuth Wired: “Taken
together, OpenID and OAuth establish an open, reusable means of turning the whole web into your own personal social network.” Sign-in with a URL Identify buddies with URLs Inter-site data permissioning system Richer infrastructure for cross-site integration
What can we do today?
Migrate proﬁles between sites Use OpenID to label source of claims Use FOAF & Microformats to describe owner of OpenID Use Google SG API to ﬁnd old friends on new sites Navigate uniﬁed ‘Social Graph’ with alternate UI
User experience impact? OpenID is
a learning experience... Reduce email-based “add a friend” noise Less work to enter and enjoy a new ‘social’ site User education needed re privacy exposure More focussed, specialist sites (travel, music, food, tv, events)
Greater than sum of parts?
OpenID gives Identity not Trust FOAF/RDF gives claim-based description, not Trust Linked data approach allows Trust to ﬂow If you are sure about ‘danbri.org’, and danbri.org claims same owner as danbri.livejournal.com, ... you have a basis for believing claims from the latter. (Google SGAPI does just this)
What can we expect tommorrow?
Focus moving from individuals to groups: super-connectors will link sites communities will spread across sites Evidence-based friend lists: Identiﬁed by OpenID. Described by FOAF/XFN. people I send mail to Shared with OAuth. people I work with Syndicated with RSS/Atom. members of my family Notiﬁed via XMPP. Searched by Yahoo/Google/...? people in my city Data ﬂow; implicit groups; offsite ﬁltering