@article{howtodetermineanoptimalnoisesubspace,
  title = {How to Determine an Optimal Noise Subspace?},
  author = {Kaijie Xu},
  year = {2021},
  eprint = {2106.08201},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2106.08201v1},
}