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SUMMARY:The Importance of Being Placefriends: Discovering Location-focused
  Online Communities - Chloë Brown (University of Cambridge)
DTSTART:20120719T150000Z
DTEND:20120719T160000Z
UID:TALK38594@talks.cam.ac.uk
CONTACT:Eiko Yoneki
DESCRIPTION:Discovering groups of online friends who go to the same physic
 al places has numerous potential applications including privacy management
 \, friend recommendation\, and contact grouping as in Google+ circles. Unt
 il recently\, little information was available about places visited by use
 rs of online social networking services\, so community detection on the so
 cial graph could not take this into account. With the rise of services suc
 h as Foursquare\, Gowalla\, and Facebook Places\, where users check in to 
 named venues and share their location with their friends\, we now have the
  right data to make this possible. In this work\, we propose a way to extr
 act place-focused communities from the social graph by annotating its edge
 s with check-in information. Using traces from two online social networks 
 with location sharing\, we show that we can extract groups of friends who 
 meet face-to-face\, with many possible benefits for online social service
 s.
LOCATION:FW26\, Computer Laboratory\, William Gates Builiding
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