@inproceedings{computationallyefficientwassersteinloss,
  title = {Computationally Efficient Wasserstein Loss for Structured Labels},
  author = {Ayato Toyokuni and Sho Yokoi and Hisashi Kashima and Makoto Yamada},
  year = {2021},
  booktitle = {EACL 2021 2},
  eprint = {2103.00899},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2103.00899v1},
}