@inproceedings{lin-etal-2026-pgpo, title = "{PGPO}: Prototype-Guided Progressive Obfuscation for Privacy-Preserving {LLM}-Enhanced Recommendation", author = "Lin, Shengxiang and Su, Jiajie and Zhou, Pengyang and Chen, Xiang and Zheng, Xiaolin and Tian, Feng and Chen, Chaochao", editor = "Lee, Hung-Yi and Dev, Sunipa and Li, Jessy and Elliott, Desmond", booktitle = "Proceedings of the 2026 Conference on Empirical Methods in Natural Language Processing", month = oct, year = "2026", address = "Budapest, Hungary", publisher = "Association for Computational Linguistics", url = "https://aclanthology.org/2026.emnlp-main.480/", pages = "11027--11046", ISBN = "979-8-89176-459-0" }