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SIGSNA presentation at the ISA2010 Conference - RC51 session. Gotenburgh, Swden, July 2010-

SIGSNA presentation at the ISA2010 Conference - RC51 session. Gotenburgh, Swden, July 2010-

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  • 1. SIGSNA:an empirical analysis of news propagationpath in social network sites.
    Luca Rossi –Universityof Urbino “Carlo Bo”luca.rossi@uniurb.it
  • 2. Global phaenomenon, expressing cultural peculiarities.
  • 3.
  • 4.
  • 5. Whatispropagation in Friendfeed?
  • 6. Local
    Global
    User
    Prob. of exposition
    Avg. audience
    Time
    Delay of reception
    Avg. lifetime
    Howwe can observepropagation?
  • 7. data
    All public entries(post and relatedcomments)(Sept. 6–Sept. 19 2009)
    ≃ 10.500.000 posts   ≃ 500.000 likes.   ≃ 450.000 users.  ≃ 15.000.000 di archi (subs).
  • 8. case study: a propagation
    Mike Bongiorno (famousItalian TV host) died on Sept. 8 2010.The newsappears in Friendfeed at 01.57 PM:- First entry 130 comments
    - Allentries585 comments
  • 9.
  • 10. Using timestamps and network of followers we have been able to track the propagation paths identifying major hubs.
  • 11. Short propagationchains
    Long propagationchains
    No propagation
  • 12.
  • 13.
  • 14.
  • 15. Explicit news sharing is followed by chatting and discussion. This kind of activity contribute to news propagation

    Bye Mike! We’re missingyou!Bye granpa Mike!
    Mike, you’ve been a milestoneofour TV

    - Explicit news propagation.
    - Implicit news propagation.
    - Mourningritualof the networked public.
  • 16. First entry has the highest informative function
    Most commented entry is a long and articulated discussion
  • 17. Mass media system 2.0 ?
    Friendfeed
    Major Italian Newspapers(Il Corrieredella Sera, La Repubblica)
  • 18. Mass media system 2.0 ?
    When the news hit the Friendfeed network only SkyTg24 wasbroadcastingit.
    The selection code is up to the end user and hedecideswhenever a specific information is informative.
  • 19. Mass media system 2.0 ?
    Is the evolutionof news/chat thatwehavedetectedsimilartocouple news/reportage?
  • 20. 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. MatteoMagnani) and it is partially founded by Telecom Italia.