@incollection{top-k,
  author={Dan Alistarh and Torsten Hoefler and Mikael Johansson and Sarit Khirirat and Nikola Konstantinov and Cedric Renggli},
  title={{The Convergence of Sparsified Gradient Methods}},
  journal={},
  institution={},
  year={2018},
  month={Dec.},
  pages={},
  volume={},
  number={},
  booktitle={Advances in Neural Information Processing Systems 31},
  location={Montreal, Canada},
  publisher={Curran Associates, Inc.},
  issn={},
  isbn={},
  note={},
}