@inproceedings{atokenlevelreferencefreehallucination,
  title = {A Token-level Reference-free Hallucination Detection Benchmark for Free-form Text Generation},
  author = {Tianyu Liu and Yizhe Zhang and Chris Brockett and Yi Mao and Zhifang Sui and Weizhu Chen and Bill Dolan},
  year = {2021},
  booktitle = {ACL 2022 5},
  eprint = {2104.08704},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2104.08704v2},
}