@inproceedings{christopoulou-etal-2025-sparsepo, title = "{S}parse{PO}: Controlling Preference Alignment of {LLM}s via Sparse Token Masks", author = "Christopoulou, Fenia and Cardenas, Ronald and Lampouras, Gerasimos and Bou Ammar, Haitham and Wang, Jun", editor = "Christodoulopoulos, Christos and Chakraborty, Tanmoy and Rose, Carolyn and Peng, Violet", booktitle = "Findings of the Association for Computational Linguistics: EMNLP 2025", month = nov, year = "2025", address = "Suzhou, China", publisher = "Association for Computational Linguistics", url = "https://preview.aclanthology.org/author-page-yu-wang-polytechnic/2025.findings-emnlp.1389/", doi = "10.18653/v1/2025.findings-emnlp.1389", pages = "25477--25503", ISBN = "979-8-89176-335-7" }