@inproceedings{leng-etal-2026-groupdpo, title = "{G}roup{DPO}: Memory-Efficient Group-Wise Direct Preference Optimization", author = "Leng, Jixuan and Si, Si and Yu, Hsiang-Fu and Raman, Vinod and Dhillon, Inderjit S", editor = "Lee, Hung-Yi and Dev, Sunipa and Li, Jessy and Elliott, Desmond", booktitle = "Findings of the {A}ssociation for {C}omputational {L}inguistics: {EMNLP} 2026", month = oct, year = "2026", address = "Budapest, Hungary", publisher = "Association for Computational Linguistics", url = "https://aclanthology.org/2026.findings-emnlp.3/", pages = "29--51", ISBN = "979-8-89176-462-0" }