@article{hardlabelssampledfromsparsetargetsmislea,
  title = {Hard labels sampled from sparse targets mislead rotation invariant algorithms},
  author = {Avrajit Ghosh and Bin Yu and Manfred Warmuth and Peter Bartlett},
  year = {2026},
  eprint = {2603.20967},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2603.20967},
}