@article{lowerboundedproperlossesforweakly,
  title = {Lower-Bounded Proper Losses for Weakly Supervised Classification},
  author = {Shuhei M. Yoshida and Takashi Takenouchi and Masashi Sugiyama},
  year = {2021},
  eprint = {2103.02893},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2103.02893v2},
}