@InProceedings{saito:2018:SCAI,
  author    = {Saito, Atsushi},
  title     = {Curriculum Learning Based on Reward Sparseness for Deep Reinforcement Learning of Task Completion Dialogue Management},
  booktitle = {Proceedings of the 2018 EMNLP Workshop SCAI: The 2nd International Workshop on Search-Oriented Conversational AI},
  month     = {October},
  year      = {2018},
  address   = {Brussels, Belgium},
  publisher = {Association for Computational Linguistics},
  pages     = {46--51},
  abstract  = {Learning from sparse and delayed reward},
  url       = {http://www.aclweb.org/anthology/W18-5707}
}