@misc{shiratori2020prediction,
  title={Prediction of hierarchical time series using structured regularization and its application to artificial neural networks},
  author={Tomokaze Shiratori and Ken Kobayashi and Yuichi Takano},
  year={2020},
  eprint={2007.15159},
  archivePrefix={arXiv},
  primaryClass={cs.LG},
  doi={10.1371/journal.pone.0242099},
  url={https://arxiv.org/abs/2007.15159}
}