@article{whatmodelsknowhowwelltheyknowitknowledge,
  title = {What Models Know, How Well They Know It: Knowledge-Weighted Fine-Tuning for Learning When to Say "I Don't Know"},
  author = {Joosung Lee and Hwiyeol Jo and Donghyeon Ko and Kyubyung Chae and Cheonbok Park and Jeonghoon Kim},
  year = {2026},
  eprint = {2604.05779},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2604.05779},
}