@article{JMLR:v21:18-567,
  author  = {Zhanrui Cai and Runze Li and Liping Zhu},
  title   = {Online Sufficient Dimension Reduction Through Sliced Inverse Regression},
  journal = {Journal of Machine Learning Research},
  year    = {2020},
  volume  = {21},
  number  = {10},
  pages   = {1--25},
  url     = {http://jmlr.org/papers/v21/18-567.html}
}