@article{featuregroupingandsparseprincipal,
  title = {Feature Grouping and Sparse Principal Component Analysis with Truncated Regularization},
  author = {Haiyan Jiang and Shanshan Qin and Oscar Hernan Madrid Padilla},
  year = {2021},
  eprint = {2106.13685},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2106.13685v2},
}