@article{
qiu2025dadpo,
title={{DA}-{DPO}: Cost-efficient Difficulty-aware Preference Optimization for Reducing {MLLM} Hallucinations},
author={Longtian Qiu and Shan Ning and Chuyu Zhang and Jiaxuan Sun and Xuming He},
journal={Transactions on Machine Learning Research},
issn={2835-8856},
year={2025},
url={https://openreview.net/forum?id=M52CgPcgGx},
note={}
}