@article{optimisticproximalpolicyoptimization,
  title = {Optimistic Proximal Policy Optimization},
  author = {Takahisa Imagawa and Takuya Hiraoka and Yoshimasa Tsuruoka},
  year = {2019},
  eprint = {1906.11075},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1906.11075v1},
}