@article{principalcomponentanalysisforgaussian,
  title = {Principal component analysis for Gaussian process posteriors},
  author = {Hideaki Ishibashi and Shotaro Akaho},
  year = {2021},
  eprint = {2107.07115},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2107.07115v2},
}