@article{arewardfreeviewpointonmultiobjectiverein,
  title = {A Reward-Free Viewpoint on Multi-Objective Reinforcement Learning},
  author = {Ying-Tu Chen and Wei Hung and Bing-Shu Wu and Zhang-Wei Hong and Ping-Chun Hsieh},
  year = {2026},
  eprint = {2604.24532},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2604.24532},
}