@article{JMLR:v24:21-1308,
  author  = {Xi Wang and Zhipeng Tu and Yiguang Hong and Yingyi Wu and Guodong Shi},
  title   = {Online Optimization over Riemannian Manifolds},
  journal = {Journal of Machine Learning Research},
  year    = {2023},
  volume  = {24},
  number  = {84},
  pages   = {1--67},
  url     = {http://jmlr.org/papers/v24/21-1308.html}
}