BEGIN:VCALENDAR
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME;VALUE=TEXT:PlanIt Purple
VERSION:2.0
PRODID:-//PlanIt Purple//EN
BEGIN:VEVENT
STATUS:CONFIRMED
LAST-MODIFIED:20090304T161601
URL:http://www.northwestern.edu/nico/events/index.html#seminars
PRIORITY:0
CLASS:PUBLIC
UID:381556@northwestern.edu
SUMMARY:Wednesdays@NICO: Measuring and modelling social networks and social influence
DESCRIPTION:Presenter: Jukka-Pekka Onnela - Kennedy School\, Harvard University We have studied a society-wide network derived from the cell phone calls of  millions of users. I will highlight some of our key empirical findings and will  then present a model of social networks motivated by the empirical study. By  starting from a set of microscopic rules governing the formation of ties at the  level of individuals\, the model is able to produce macroscopic social structures  that are compatible with real world social networks. I then turn to social  influence in a setting that allows us to connect individual and collective  behavior in a self-contained system by tracking the popularity of applications  installed by users of the social networking site Facebook. We observe two  qualitatively different regimes of behavior\, where the cross-over point  corresponds to a tipping-point in popularity.   NICO Coffee Hour will follow for questions\, networking and collaboration. http://www.northwestern.edu/nico/events/index.html#seminars
DTSTART:20090311T120000
DTEND:20090311T140000
CREATED:20090130T000000
DTSTAMP:20090130T000000
SEQUENCE:0
LOCATION:Evanston
END:VEVENT
END:VCALENDAR