@article{orthogonalseriesestimationfortheratioof,
  title = {Orthogonal Series Estimation for the Ratio of Conditional Expectation Functions},
  author = {Kazuhiko Shinoda and Takahiro Hoshino},
  year = {2022},
  eprint = {2212.13145},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2212.13145v1},
}