@article{repetitionmismatchwhydatamixtureexperime,
  title = {Repetition Mismatch: Why Data Mixture Experiments Don't Scale and How to Fix Them},
  author = {Kevin Zhou and Lisa Alazraki and Kris Cao and Marek Rei},
  year = {2026},
  eprint = {2606.07597},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2606.07597},
}