@article{aunifiedoffpolicyevaluationapproachfor,
  title = {A Unified Off-Policy Evaluation Approach for General Value Function},
  author = {Tengyu Xu and Zhuoran Yang and Zhaoran Wang and Yingbin Liang},
  year = {2021},
  eprint = {2107.02711},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2107.02711v1},
}