IR11 | Gothenburg
Propagation paths of Information in
Social Network Sites
SIGSNA research project
Luca Rossi – University...
IR11 | Gothenburg
IR11 | Gothenburg
IR11 | Gothenburg
What is propagation in Friendfeed?
IR11 | Gothenburg
data
All public entries (post and related comments)
(Sept. 6 –Sept. 19 2009)
≃ 10.500.000 posts
500.000 ...
IR11 | Gothenburg
Data
196.350 Italian posts
Language Fidelity Index:
Number of Posts in a
Language / Number of Posts of
u...
IR11 | Gothenburg
case study: propagation
Mike Bongiorno (famous Italian TV host) died on Sept. 8 2010.
The news appears i...
IR11 | Gothenburg
IR11 | Gothenburg
Using timestamps and network of followers we have
been able to track the propagation paths identifying
m...
IR11 | Gothenburg
Long propagation chains No propagation
Short propagation chains
IR11 | Gothenburg
IR11 | Gothenburg
IR11 | Gothenburg
IR11 | Gothenburg
Explicit news sharing is
followed by chatting and
discussion. This kind of activity
contribute to news
p...
IR11 | Gothenburg
tec nettec net real netreal net
edges 14,946,610 161,603
followers 44 13
Some connections are more
conne...
IR11 | Gothenburg
First entry has the highest informative function
Most commented entry is a long and articulated discussi...
IR11 | Gothenburg
Mass media system 2.0 ?
Friendfeed Major Italian Newspapers
(Il Corriere della Sera, La Repubblica)
IR11 | Gothenburg
Mass media system 2.0 ?
When the news hit the Friendfeed network
only SkyTg24 was broadcasting it.
The s...
IR11 | Gothenburg
Mass media system 2.0 ?
Is the evolution of news/chat that we have
detected similar to couple news/repor...
IR11 | Gothenburg
More info, papers and data:
http://larica.uniurb.it/sigsna
SIGSNA is a joint research project with the d...
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Information propagation in Microblogging Sites

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Information propagation in Microblogging Sites

  1. 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
  2. 2. IR11 | Gothenburg
  3. 3. IR11 | Gothenburg
  4. 4. IR11 | Gothenburg What is propagation in Friendfeed?
  5. 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. 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. 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
  8. 8. IR11 | Gothenburg
  9. 9. IR11 | Gothenburg Using timestamps and network of followers we have been able to track the propagation paths identifying major hubs.
  10. 10. IR11 | Gothenburg Long propagation chains No propagation Short propagation chains
  11. 11. IR11 | Gothenburg
  12. 12. IR11 | Gothenburg
  13. 13. IR11 | Gothenburg
  14. 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. 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. 16. IR11 | Gothenburg First entry has the highest informative function Most commented entry is a long and articulated discussion
  17. 17. IR11 | Gothenburg Mass media system 2.0 ? Friendfeed Major Italian Newspapers (Il Corriere della Sera, La Repubblica)
  18. 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. 19. IR11 | Gothenburg Mass media system 2.0 ? Is the evolution of news/chat that we have detected similar to couple news/reportage?
  20. 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.
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