@article{reducingthedimensionalityandgranularity,
  title = {Reducing the dimensionality and granularity in hierarchical categorical variables},
  author = {Paul Wilsens and Katrien Antonio and Gerda Claeskens},
  year = {2024},
  eprint = {2403.03613},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2403.03613v2},
}