@article{rethinkingimportancesamplinginllmpolicyo,
  title = {Rethinking Importance Sampling in LLM Policy Optimization: A Cumulative Token Perspective},
  author = {Yuheng Zhang and Chenlu Ye and Shuowei Jin and Changlong Yu and Wei Xiong and Saurabh Sahu and Nan Jiang},
  year = {2026},
  eprint = {2605.07331},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2605.07331},
}