@article{learningfunctionsvaryingalonganactive,
  title = {Learning functions varying along a central subspace},
  author = {Hao Liu and Wenjing Liao},
  year = {2020},
  eprint = {2001.07883},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2001.07883v3},
}