Krisztian Balog, Marc Bron, Maarten de Rijke
University of Amsterdam, The Netherlands
Shivani Agarwal, Michael Collins
Massachusetts Institute of Technology, United States of America
Wei Zheng, Hui Fang
University of Delaware, United States of America
Guido Zuccon, Leif Azzopardi
University of Glasgow, United Kingdom
Xinhui Tu, Tingting He, Jing Luo
Engineering & Research Center For Information Technology On Education, Huazhong Normal University. Wuhan, Hubei, China