Zongsheng Cao Yangfan He Anran Liu Jun Xie 0003 Zhepeng Wang 0002 Feng Chen 0044 PurifyGen: A Risk-Discrimination and Semantic-Purification Model for Safe Text-to-Image Generation. 816-825 2025 ACM Multimedia https://doi.org/10.1145/3746027.3754595 conf/mm/2025 db/conf/mm/mm2025.html#CaoHLX0C25