@article{sharpanalysisfornonconvexsgdescaping,
  title = {Sharp Analysis for Nonconvex SGD Escaping from Saddle Points},
  author = {Cong Fang and Zhouchen Lin and Tong Zhang},
  year = {2019},
  eprint = {1902.00247},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1902.00247v2},
}