From: simon.dooms@gmail.com   
      
    RecSys 2014 Challenge - calling for participants!   
      
   We are pleased to announce the RecSys 2014 Challenge in conjunction with the   
   ACM RecSys 2014 conference, USA, 6th-10th October 2014. The theme of this   
   year's challenge is evaluation based on user engagement. Instead of the   
   typical rating prediction task,    
   the goal is to predict how much interaction an item would receive via Twitter.   
   The challenge is based on an extended version of the MovieTweetings dataset,   
   which contains data on more than 200,000 tweets that were generated when users   
   rated movies on    
   IMDb. The challenge for participants is to rank such tweets by expected user   
   interaction, which is expressed in terms of retweet and favorite counts.   
      
   Visit the website for more information: www.recsyschallenge.com   
      
   --------------------   
   Important dates   
   -------------------   
   Deadline for paper submission: 14 August, 2014   
   Notification of acceptance: 1 September, 2014   
   Deadline for submitting runs for the challenge: 22 September, 2014   
   Winners announced: RecSys 2014 (6-10 October 2014)   
      
   ----------------   
   Organization   
   ---------------   
   Alan Said - CWI, The Netherlands @alansaid   
   Simon Dooms - Ghent University, Belgium @sidooms   
   Babak Loni - TU Delft, The Netherlands @babak_loni   
   Domonkos Tikk - Gravity R&D, Hungary @domonkostikk   
      
   ---------------------------------------   
   Contact us for more information   
   ---------------------------------------   
   web: www.recsyschallenge.com   
   twitter: @recsyschallenge   
   email: info[at]recsyschallenge.com   
      
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