@article{gradientstarvationinbinaryrewardgrpowhyg,
  title = {Gradient Starvation in Binary-Reward GRPO: Why Group-Mean Centering Fails and Why the Simplest Fix Works},
  author = {Wenhua Nie and Jianan Wu and Junlin Liu and Ziwei Li and Zheng Lin and Zhang Zijian and Yilong Fan and Haoran Zheng and Jyh-Shing Roger Jang},
  year = {2026},
  eprint = {2605.07689},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2605.07689},
}