@article{quantificationunderpriorprobabilityshift,
  title = {Quantification under prior probability shift: the ratio estimator and its extensions},
  author = {Afonso Fernandes Vaz and Rafael Izbicki and Rafael Bassi Stern},
  year = {2018},
  eprint = {1807.03929},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1807.03929v2},
}