@inproceedings{towardsmixtureproportionestimationwithou,
  title = {Rethinking Class-Prior Estimation for Positive-Unlabeled Learning},
  author = {Yu Yao and Tongliang Liu and Bo Han and Mingming Gong and Gang Niu and Masashi Sugiyama and DaCheng Tao},
  year = {2020},
  booktitle = {ICLR 2022 4},
  eprint = {2002.03673},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2002.03673v2},
}