@article{learningbygroupingamultilevel,
  title = {Learning by Grouping: A Multilevel Optimization Framework for Improving Fairness in Classification without Losing Accuracy},
  author = {Ramtin Hosseini and Li Zhang and Bhanu Garg and Pengtao Xie},
  year = {2023},
  eprint = {2304.00486},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2304.00486v1},
}