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SUMMARY:YouTube Around the World: Geographic Popularity of Videos - Salvat
 ore Scellato (University of Cambridge)
DTSTART:20120321T160000Z
DTEND:20120321T163000Z
UID:TALK36782@talks.cam.ac.uk
CONTACT:Eiko Yoneki
DESCRIPTION:One of the most popular user activities on the Web is watching
  videos. Services like YouTube\, Vimeo\, and Hulu host and stream millions
  of videos\, providing content that is on par with TV. While some of this 
 content is popular all over the globe\, some videos might be only watched 
 in a confined\, local region.\n\nIn this work we study the relationship be
 tween popularity and locality of online YouTube videos. We investigate whe
 ther YouTube videos exhibit geographic locality of interest\, with views a
 rising from a confined spatial area rather than from a global one. Our ana
 lysis is done on a corpus of more than 20 millions YouTube videos\, upload
 ed over one year from different regions. We find that about 50% of the vid
 eos have more than 70% of their views in a single region.\nBy relating loc
 ality to viralness we show that social sharing generally widens the geogra
 phic reach of a video. If\, however\, a video cannot carry its social impu
 lse over to other means of discovery\, it gets stuck in a more confined ge
 ographic region. Finally\, we analyze how the geographic properties of a v
 ideo's views evolve on a daily basis during its lifetime\, providing new i
 nsights on how the geographic reach of a video changes as its popularity p
 eaks and then fades away. Our results demonstrate how\, despite the global
  nature of the Web\, online video consumption appears constrained by geogr
 aphic locality of interest: this has a potential impact on a wide range of
  systems and applications\, spanning from delivery networks to recommendat
 ion and discovery engines\, providing new directions for future research.\
 n\n
LOCATION:SS03\, Computer Lab\, William Gates Building
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