InterActHuman: Multi-Concept Human Animation with Layout-Aligned Audio Conditions - Wang, Zhenzhi; Yang, Jiaqi; Jiang, Jianwen; Liang, Chao; Lin, Gaojie; Zheng, Zerong; Yang, Ceyuan; Zhang, Yuan; Gao, Mingyuan; Lin, Dahua (International Conference on Learning Representations, 2026)