@article{howconfidentisthefirsttokenanuncertainty,
  title = {How Confident Is the First Token? An Uncertainty-Calibrated Prompt Optimization Framework for Large Language Model Classification and Understanding},
  author = {Wei Chen and Guoyang Ju and Yuanyuan Qi},
  year = {2026},
  eprint = {2603.18009},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2603.18009},
}