@inproceedings{ijcai2018p114,
  title     = {Multi-Level Policy and Reward Reinforcement Learning for Image Captioning},
  author    = {Liu, Anan and Xu, Ning and Zhang, Hanwang and Nie, Weizhi and Su, Yuting and Zhang, Yongdong},
  booktitle = {Proceedings of the Twenty-Seventh International Joint Conference on
               Artificial Intelligence, {IJCAI-18}},
  publisher = {International Joint Conferences on Artificial Intelligence Organization},
  editor    = {Jérôme Lang},
  pages     = {821--827},
  year      = {2018},
  month     = {7},
  note      = {Main track},
  doi       = {10.24963/ijcai.2018/114},
  url       = {https://doi.org/10.24963/ijcai.2018/114},
}