@article{aunifiedframeworkformultidistribution1,
  title = {A Unified Framework for Multi-distribution Density Ratio Estimation},
  author = {Lantao Yu and Yujia Jin and Stefano Ermon},
  year = {2021},
  eprint = {2112.03440},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2112.03440v1},
}