@article{onheterogeneouslydistributeddatasparsity,
  title = {On Heterogeneously Distributed Data, Sparsity Matters},
  author = {Tiansheng Huang and Shiwei Liu and Li Shen and Fengxiang He and Weiwei Lin and DaCheng Tao},
  year = {2021},
  url = {https://openreview.net/forum?id=AT0K-SZ3QGq},
}