@article{prudentsilenceorfoolishbabbleexamining,
  title = {Examining LLMs' Uncertainty Expression Towards Questions Outside Parametric Knowledge},
  author = {Genglin Liu and Xingyao Wang and Lifan Yuan and Yangyi Chen and Hao Peng},
  year = {2023},
  eprint = {2311.09731},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2311.09731v2},
}