@article{unbiasedimplicitfeedbackviabilevel,
  title = {Unbiased Implicit Feedback via Bi-level Optimization},
  author = {Can Chen and Chen Ma and Xi Chen and Sirui Song and Hao liu and Xue Liu},
  year = {2022},
  eprint = {2206.00147},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2206.00147v1},
}