@article{howinstructionandreasoningdatashapepost,
  title = {How Instruction and Reasoning Data shape Post-Training: Data Quality through the Lens of Layer-wise Gradients},
  author = {Ming Li and Yanhong Li and Ziyue Li and Tianyi Zhou},
  year = {2025},
  eprint = {2504.10766},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2504.10766v1},
}