@article{beyondimportancesamplingrejectiongatedpo,
  title = {Beyond Importance Sampling: Rejection-Gated Policy Optimization},
  author = {Ziwu Sun and Zhen Gao and Jiyong Zhang and Jiaheng Li},
  year = {2026},
  eprint = {2604.14895},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2604.14895},
}