Chen, Liqun, Ke Bai, Chenyang Tao, Yizhe Zhang, Guoyin Wang, Wenlin Wang, Ricardo Henao, and Lawrence Carin. 2020. “Sequence Generation With Optimal-Transport-Enhanced Reinforcement Learning”. Proceedings of the AAAI Conference on Artificial Intelligence 34 (05):7512-20. https://doi.org/10.1609/aaai.v34i05.6249.