Single-stream Policy Optimization

@misc{xu2025singlestreampolicyoptimization,
      title={Single-stream Policy Optimization},
      author={Zhongwen Xu and Zihan Ding},
      year={2025},
      eprint={2509.13232},
      archivePrefix={arXiv},
      primaryClass={cs.LG},
      url={https://arxiv.org/abs/2509.13232},
}