@article{bipacebisimulationguidedpolicyoptimizati,
  title = {BiPACE: Bisimulation-Guided Policy Optimization with Action Counterfactual Estimation for LLM Agents},
  author = {Hanyang Wang and Weijieying Ren and Yuxiang Zhang and Ding Cao and Zhizhao Zeng and Ke Zeng and Tianxiang Zhao},
  year = {2026},
  eprint = {2606.25556},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2606.25556},
}