@article{geometricdeviationasanunsupervisedpregen,
  title = {Geometric Deviation as an Unsupervised Pre-Generation Reliability Signal: Probing LLM Representations for Answerability},
  author = {Yucheng Du},
  year = {2026},
  eprint = {2605.03196},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2605.03196},
}