@article{fozoforwardonlyzerothorderpromptoptimiza,
  title = {FOZO: Forward-Only Zeroth-Order Prompt Optimization for Test-Time Adaptation},
  author = {Xingyu Wang and Tao Wang},
  year = {2026},
  eprint = {2603.04733},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2603.04733},
}