@article{referencefreeevaluationmetricsfortext,
  title = {Reference-free Evaluation Metrics for Text Generation: A Survey},
  author = {Takumi Ito and Kees Van Deemter and Jun Suzuki},
  year = {2025},
  eprint = {2501.12011},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2501.12011v1},
}