@article{JMLR:v26:24-1991,
  author  = {Tao Sun and Xinwang Liu and Kun Yuan},
  title   = {Revisiting Gradient Normalization and Clipping for Nonconvex SGD under Heavy-Tailed Noise: Necessity, Sufficiency, and Acceleration},
  journal = {Journal of Machine Learning Research},
  year    = {2025},
  volume  = {26},
  number  = {237},
  pages   = {1--42},
  url     = {http://jmlr.org/papers/v26/24-1991.html}
}