1. Qian & Pierre-Adrien
F2B506 - 05/03/2012
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2.  Increasing use of IM services and social web sites
 Different ways to be present online
 Status message
 Online status (Busy, Available, Away…)
 Current Music, activities (games…)
 Connection between the services
 Need for
 Interaction
 Interoperability
 Integration
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3.  Descriptive vocabulary for all the aspects of a user’s
presence in the online world
 Expressed using RDF and OWL
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5.  OnlinePresence: core class
 OnlineStatusComponent: abstract component
 Findability: user’s willingness to let other users find his/her
contact details in public listings.
 Notifiability: user’s willingness of a user to receive
notifications from applications
 OnlineStatus: IM status, used on IM platforms
 Visibility, Activity, Contactability, Disturbability
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7.  Facilitate the integration of online presence
data from various sources
 Transfer data from one service to another
(same profile on heterogeneous services)
 Application example :
 Spark2OPO (http://online-presence.net/applications.php)
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8. @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>.
@prefix opo: <http://online-presence.net/opo/ns#>.
@prefix foaf: <http://xmlns.com/foaf/0.1/>.
@prefix sioc: <http://rdfs.org/sioc/ns#>.
<http://ggg.milanstankovic.org/foaf.rdf#milstan> opo:declares
:MyCurrentPresence.
:MyCurrentPresence rdf:type opo:OnlinePresence;
opo:customMessage :MyStatusMessage;
opo:avatar <http://www.milanstankovic.org/img/malaSlika.jpg>;
opo:hasPresenceComponent :MyOnlineStatus, opo:AllNotificationsPass,
opo:PubliclyFindable.
:MyStatusMessage rdf:type sioc:Post;
sioc:content "singing in the rain".
:MyOnlineStatus rdf:type opo:OnlineStatus;
opo:hasStatusComponent opo:Active, opo:Available, opo:Visible,
opo:FreelyContactable.
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9.  OPO & FOAF
 Connection through some properties (ex: agent)
 Complementarity
▪ FOAF: static and more persistent users online properties
▪ OPO: frequently changing properties
 OPO & SIOC
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10.  Good practice !
 Time Saver
 Anticipate future needs for interoperability
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11.  http://en.wikipedia.org/wiki/Online_Presence_Ontology
 http://online-presence.net/
 http://www.slideshare.net/milstan/online-presence
 http://online-presence.net/opo/spec/
 http://code.google.com/p/onlinepresence/
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