@article{fedpdpofederatedpersonalizeddirectprefer,
  title = {FedPDPO: Federated Personalized Direct Preference Optimization for Large Language Model Alignment},
  author = {Kewen Zhu and Liping Yi and Zhiming Zhao and Zhuang Qi and Han Yu and Qinghua Hu},
  year = {2026},
  eprint = {2603.19741},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2603.19741},
}