@article{ahierarchicalframeworkforrelation,
  title = {A Hierarchical Framework for Relation Extraction with Reinforcement Learning},
  author = {Ryuichi Takanobu and Tianyang Zhang and Jiexi Liu and Minlie Huang},
  year = {2018},
  eprint = {1811.03925},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1811.03925v1},
}