@article{leanclientsfullaccuracyhybridzerothandfi,
  title = {Lean Clients, Full Accuracy: Hybrid Zeroth- and First-Order Split Federated Learning},
  author = {Zhoubin Kou and Zihan Chen and Jing Yang and Cong Shen},
  year = {2026},
  eprint = {2601.09076},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2601.09076},
}