Presentation done at the Workshop on Advanced Research Methods, Sep. 30th Unversity of Urbino

1. Beyond network structure:
new social metrics for online
conversations.
part of the SIGSNA RESEARCH PROJECT
Luca Rossi, University of Urbino “Carlo Bo”

2. How to map information propagation
in SNS (FriendFeed)?

3. Interaction leads to propagation

4. Interaction leads to propagation

5. propagation happens through unstable
connections: foaf or #hashtag

6. mike bongiorno
Died on Sept. 8 2009.
The news appears in Friendfeed at 01.57 PM:
- First entry 130 comments
- All entries 585 comments

8. ONE Topic:
many propagation paths

9. first entry ≠ most commented entry

10. first entry ≠ most commented entry

11. first entry ≠ most commented entry

13. Mike passed away!

14. Mike passed away!
How has television changed?

15. Mike passed away!
Why do we call Mike grandpa while we
don’t care about our biological
grandfathers?
How has television changed?

16. Mike passed away!
Why do we call Mike grandpa while we
don’t care about our biological
grandfathers?
Bye Mike! We’re missing you!
Bye granpa Mike!
Mike, you’ve been a milestone of our TV
How has television changed?

17. technical affordances
propagation = +
social practices

18. avg (entries/comments)
Global data 0.147902263
Italian
1.230496784
data
Multimedia 0.432728179

19. is it possible to have social metrics?

20. sna measures:
}
Degree Distribution
Conected components
Shortest path Based on the network structure
Clustering
Betweenness e Closeness Centrality

21. beta
social metrics:
}
User’s network use
Conversation index
Based on users social activities
Out of Network Conversation
Language fidelity Index

22. social metrics:
beta
User’s network use
Conversation index
Out of Network Conversation
Language fidelity Index
tec net real net
15
edges 14,946,610 161.603
10
hidden/technical
followers 44 13
Some connections are more 5
0
connections than others 0 2000 4000 6000 8000 10000
Index

23. social metrics:
beta
User’s network use
Conversation index
Out of Network Conversation
Language fidelity Index

24. social metrics:
beta
User’s network use
Conversation index
Out of Network Conversation
Language fidelity Index
lrossi
following 117 users following 117 users
avg 0.0451770451770452. avg 0.00326599681853791
lrossi > user 1
lrossi > user 0.857142857142857
lrossi > user 0.714285714285714
lrossi > user 0.571428571428571
lrossi > user 0.428571428571429
lrossi > user 0.285714285714286
lrossi > user 0.285714285714286
lrossi > user 0.285714285714286
lrossi > user 0.142857142857143
lrossi > user 0.142857142857143
lrossi > user 0.142857142857143
lrossi > user 0.142857142857143
lrossi > user 0.142857142857143
lrossi > user 0.142857142857143

25. social metrics:
beta
User’s network use
Conversation index
Out of Network Conversation
Language fidelity Index
Broadcasting or chatting?

26. social metrics:
beta
User’s network use
Conversation index
Out of Network Conversation
Language fidelity Index
kurai
pbeneforti
kurai
pbeneforti

27. social metrics:
beta
User’s network use
Conversation index
Out of Network Conversation
Language fidelity Index
definition: the average level of posting in different
languages for every user that posted, at least once, in a
specific language.

28. more info:
http://larica.uniurb.it/sigsna
Luca Rossi - luca.rossi@uniurb.it
Matteo Magnani - matteo.magnani@cs.unibo.it