1. IR11 | Gothenburg
Propagation paths of Information in
Social Network Sites
SIGSNA research project
Luca Rossi – University of Urbino “Carlo Bo”
luca.rossi@uniurb.it
5. IR11 | Gothenburg
data
All public entries (post and related comments)
(Sept. 6 –Sept. 19 2009)
≃ 10.500.000 posts
500.000 likes.≃
450.000 users.≃
15.000.000 di archi (subs).≃
6. IR11 | Gothenburg
Data
196.350 Italian posts
Language Fidelity Index:
Number of Posts in a
Language / Number of Posts of
users with an entry in that
language.
7. IR11 | Gothenburg
case study: propagation
Mike Bongiorno (famous Italian TV host) died on Sept. 8 2010.
The news appears in Friendfeed at 01.57 PM:
- First entry 130 comments
- All entries 585 comments
14. IR11 | Gothenburg
Explicit news sharing is
followed by chatting and
discussion. This kind of activity
contribute to news
propagation
”
Bye Mike! We’re missing you!
Bye granpa Mike!
Mike, you’ve been a milestone of our TV
“
- Explicit news propagation.
- Implicit news propagation.
- Mourning ritual of the
networked public.
15. IR11 | Gothenburg
tec nettec net real netreal net
edges 14,946,610 161,603
followers 44 13
Some connections are more
connections than others
When a connection is not
enough.
16. IR11 | Gothenburg
First entry has the highest informative function
Most commented entry is a long and articulated discussion
17. IR11 | Gothenburg
Mass media system 2.0 ?
Friendfeed Major Italian Newspapers
(Il Corriere della Sera, La Repubblica)
18. IR11 | Gothenburg
Mass media system 2.0 ?
When the news hit the Friendfeed network
only SkyTg24 was broadcasting it.
The selection code is up to the end user and
he decides whenever a specific information
is informative.
19. IR11 | Gothenburg
Mass media system 2.0 ?
Is the evolution of news/chat that we have
detected similar to couple news/reportage?
20. IR11 | Gothenburg
More info, papers and data:
http://larica.uniurb.it/sigsna
SIGSNA is a joint research project with the department of Computer Science of the University of
Bologna (Dr. Matteo Magnani) and it is partially founded by Telecom Italia.