@inproceedings{min-etal-2026-dalsa, title = "{DALSA}: Difficulty-Aware Long-to-Short {LLM} Reasoning with Model Merging", author = "Min, Dongwook and Kang, Jeonhwi and Jeon, Donghyeon and Kang, Inho and Na, Seung-Hoon", editor = "Zhang, Yue and Xu, Ruifeng and Purwarianti, Ayu and Rong, Tong and Suzuki, Jun", booktitle = "Proceedings of the 15th International Joint Conference on Natural Language Processing and the 5th Conference of the {A}sia-Pacific Chapter of the {A}ssociation for {C}omputational {L}inguistics (Volume 1: Long Papers)", month = nov, year = "2026", address = "Hengqin, China", publisher = "Association for Computational Linguistics", url = "https://aclanthology.org/2026.aacl-long.272/", pages = "6023--6040", ISBN = "979-8-89176-439-2" }