@misc{chang2026epistemicregretminimizationlabelfree,
      title={Epistemic Regret Minimization: Label-Free Causal Critique Beyond Outcome Reward}, 
      author={Edward Y. Chang and Longling Geng},
      year={2026},
      eprint={2602.11675},
      archivePrefix={arXiv},
      primaryClass={cs.AI},
      url={https://arxiv.org/abs/2602.11675}, 
}