@article{quadraticsufficesforoverparametrization,
  title = {Quadratic Suffices for Over-parametrization via Matrix Chernoff Bound},
  author = {Zhao Song and Xin Yang},
  year = {2019},
  eprint = {1906.03593},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1906.03593v2},
}