Kong, X., Q. Xie, Z. Dai, and E. Hovy. “Fast and Simple Mixture of Softmaxes With BPE and Hybrid-LightRNN for Language Generation”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 33, no. 01, July 2019, pp. 6626-33, doi:10.1609/aaai.v33i01.33016626.