@inproceedings{towardsbettermodelinghierarchical,
  title = {Towards Better Modeling Hierarchical Structure for Self-Attention with Ordered Neurons},
  author = {Jie Hao and Xing Wang and Shuming Shi and Jinfeng Zhang and Zhaopeng Tu},
  year = {2019},
  booktitle = {IJCNLP 2019 11},
  eprint = {1909.01562},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1909.01562v2},
}