information propagation in microblogging sites
DESCRIPTION
Presentation done at the IR11 Conference, Gothenburg Sweden.TRANSCRIPT
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IR11 | Gothenburg
Propagation paths of Information in Social Network Sites
SIGSNA research projectLuca Rossi – University of Urbino “Carlo Bo”[email protected]
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IR11 | Gothenburg
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IR11 | Gothenburg
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IR11 | Gothenburg
What is propagation in Friendfeed?
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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).≃
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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.
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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
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IR11 | Gothenburg
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IR11 | Gothenburg
Using timestamps and network of followers we have been able to track the propagation paths identifying major hubs.
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IR11 | Gothenburg
Long propagation chains No propagation
Short propagation chains
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IR11 | Gothenburg
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IR11 | Gothenburg
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IR11 | Gothenburg
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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.
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IR11 | Gothenburg
tec nettec net real netreal net
edges14,946,610
161,603
followers 44 13
Some connections are more connections than others
When a connection is not enough.
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IR11 | Gothenburg
First entry has the highest informative function
Most commented entry is a long and articulated discussion
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IR11 | Gothenburg
Mass media system 2.0 ?
Friendfeed Major Italian Newspapers(Il Corriere della Sera, La Repubblica)
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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.
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IR11 | Gothenburg
Mass media system 2.0 ?
Is the evolution of news/chat that we have detected similar to couple news/reportage?
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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.