@article{firstefficientconvergenceforstreamingk,
  title = {First Efficient Convergence for Streaming k-PCA: a Global, Gap-Free, and Near-Optimal Rate},
  author = {Zeyuan Allen-Zhu and Yuanzhi Li},
  year = {2016},
  eprint = {1607.07837},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1607.07837v4},
}