semantics in social networks

semantics insocial networks
an example of academic interest

=
+
+
two biases.

sends poker invitation
says hello
changed status
added a connection
likes your slides
hubbub 2.0
published a picture
commented
LOL

beetweenness centrality reveals brokers
« A place for good ideas » [Burt 1992] [Burt 2004]
sociograms andanalysis

multiple roles,
profiles, contexts, etc.
one graph structure doesn’t fit all.

Fabien
Michel
social network analysis
Guillaume
Rémi
Marco
Nicolas
Man
creator
type
creator
Person
author
Fabien
doc.html
type
sub property
sub class
title
Person
author
Man
Semantic web is not antisocial
semantic web
graphs, graphs, graphs, …

SW&SN some contributions…
propagating trust [Goldbeck et al. 2003]
structural characteristics [Fininet al. 2005]
applying classic SNA [Paolillo et al. 2006]
merging profiles [Goldbeck &Rothstein 2008]
extending SPARQL [Corby et al 2004] [Anyanwuet al. 2007] [Kochut et al 2007] [Baget et al, 2007] [Corby 2008]

describe persons http://xmlns.com/foaf/0.1/
[Brickley & Miller 2004]

http://vocab.org/relationship/type relations
[Davis & Vitiello, 2004]

Fabien
Mylène
Gérard
knows
colleague
father
sister
(guillaume)=5
(guillaume)=3
guillaume
d
<family>
colleague
colleague
mother
Michel
parent
sibling
Yvonne
mother
father
brother
sister
c.f. [Erétéo et al.]

typed path extraction
colleague of, colleague of, (...) the manager of someone
select ?from ?to
{
?from (rel:worksWith*/rel:manages)::$path ?to
filter(pathLength($path) <= 6)
} group by ?from
http://tinyurl.com/corese-engine
c.f. [Corby et al.]

ipernity.com dataset in RDF
61 937 actors & 494 510 relationships
18 771 family links between 8 047 actors
136 311 friend links implicating 17 441 actors
339 428 favorite links for 61 425 actors
etc.
e.g. different strategic actors depending on the link types

high centrality
SemSNA Schema
annotating the networks with their characteristics

flat folksonomies

SW&Tags some contributions…
manual structuring[Tanasescu et al., 2007] [Huynh-Kim Bang et al. , 2008]
(semi-) automaticstructuring[Mika, 2005][Heymann et al., 2006] [Schmitz, 2006][Halpin et al., 2007-2009] [Cattuto et al., 2008] [Markines et al., 2009][Specia et al., 2007] [Begelman et al., 2006]
usingexternalresources[Good et al., 2007] [Passant et al., 2007] [Specia et al., 2007][Cattuto et al., 2008][Giannakidou et al., 2008][Ronzano et al., 2008] [Tesconi et al., 2008]
schemas for interoperability[Gruber, 2005] [Newman et al., 2005] [Breslin et al., 2005][Kim et al., 2007][Passant et al., 2008]

semantically-interlinked online communities
[Breslin et al., 2005]

Tag Ontology& SCOT
[Newman et al., 2005][Kim et al., 2007]

SKOS & tags

MOAT
[Passant, 2009]

VoCamp.org
e.g. tag as named graphs
c.f. [Limpens et al.]
Nice, France
Washington, DC
Oxford, UK

c.f. [Limpens et al.]

social webs & intranets

enterprise social networking
business intelligence, watching, monitoring
communities of interest, of practice, of experts
isicil.inria.fr

integrating with internal IT landscape
c.f. [Delaforge et al.]

application contributions…
security and access controlFOAF+SSL [Story, 2008]
trust based service composition[Kuter& Golbeck, 2009]
policy aware content reuse[Seneviratne et al., 2009]
social enrichment and ranking[Choudhury et al., 2009]
context & augmented interactions Live Social Semantics [Alani et al. 2008]
identity management[Matthew Rowe, 2009]
interlinked social sitesDrupal [Corlosquet et al., 2009]
…

many other topics…
social journalism, social enterprise, social data governance, social healthcare, open social, security and privacy, provenance & trust, etc.

take home
messages

semantic social network analysis stack
exploit the semantic of typed social graphs

linked open data
as the underlying infrastructure
[Berners-Lee, 2009]

accuracy
typed networks
+ parameterized operators
= more precise analysis

owl:sameAs
=
Fabien Bafien
owl:differentFrom
≠
MagicSemanticHagridHagrid

evolution
extensible open models
+ declarative query language
= more flexible framework

time
in the models and in the analysis

security
semiotics
scale
hypermnesia
...
mobile

http://fabien.info
see also slideshare
Fabien.Gandon@sophia.inria.fr

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semantics in social networks

by Fabien Gandon on Nov 04, 2009

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