@article{whennoansweriscorrectdiagnosingabsentans,
  title = {When No Answer Is Correct: Diagnosing Absent Answer Detection for MLLMs in Video Understanding},
  author = {Yiheng Wang and Yueqian Lin and Lichen Zhu and Yudong Liu and Hai "Helen" Li and Yiran Chen},
  year = {2026},
  eprint = {2606.08239},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2606.08239},
}