@article{cfpocounterfactualpolicyoptimizationform,
  title = {CFPO: Counterfactual Policy Optimization for Multimodal Reasoning},
  author = {Zhangyuan Yu and Wanran Sun and Guangjing Yang and Xiaohu Wu and Qicheng Lao},
  year = {2026},
  eprint = {2606.23206},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2606.23206},
}