@article{difficultycontrollablemultiplechoiceques,
  title = {Difficulty-Controllable Multiple-Choice Question Generation Using Large Language Models and Direct Preference Optimization},
  author = {Yuto Tomikawa and Masaki Uto},
  year = {2025},
  eprint = {2510.19265},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2510.19265},
}