Proactive Privacy Amnesia for Large Language Models: Safeguarding PII with Negligible Impact on Model Utility - Kuo, Martin; Zhang, Jingyang; Zhang, Jianyi; Tang, Minxue; DiValentin, Louis; Ding, Aolin; Sun, Jingwei; Chen, William; Hass, Amin; Chen, Tianlong; Chen, Yiran; Li, Hai (International Conference on Learning Representations, 2025)