@inproceedings{jiang-2019-improving,
   Author = {Jiang, Shaojie and Ren, Pengjie and Monz, Christof and de Rijke, Maarten},
   Title = {Improving Neural Response Diversity with Frequency-Aware Cross-Entropy Loss},
   Booktitle = {Proceedings of the World Wide Web Conference (WWW-2019)},
   Pages = {2879--2885},
   Publisher = {ACM},
   Year = {2019}
}