X. He, L. Liao, H. Zhang, L. Nie, X. Hu, and T. Chua. Proceedings of the 26th International Conference on World Wide Web - WWW \textquotesingle17, ACM Press, (2017)
C. Liu, H. Yang, J. Fan, L. He, and Y. Wang. Proceedings of the 19th international conference on World wide web, page 681--690. New York, NY, USA, ACM, (2010)