Murat Yağcı, Tevfik Aytekin and Fikret Gürgen's team ranked 6th among 850 teams from 49 countries at the ACM RecSys Challenge 2015 Challenge organized in conjunction with the ACM Recommender System Conference in Vienna.
Further details can be found at http://recsys.acm.org/recsys15/challenge-workshop/. We congratulate them and wish them continued success.