@article{pruningandsparsemaxmethodsfor,
  title = {Pruning and Sparsemax Methods for Hierarchical Attention Networks},
  author = {João G. Ribeiro and Frederico S. Felisberto and Isabel C. Neto},
  year = {2020},
  eprint = {2004.04343},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2004.04343v1},
}