Routing Matters in MoE: Scaling Diffusion Transformers with Explicit Routing Guidance - Wei, Yujie; Zhang, Shiwei; Yuan, Hangjie; Han, Yujin; Chen, Zhekai; Wang, Jiayu; Zou, Difan; Liu, Xihui; zhang, yingya; Liu, Yu; Shan, Hongming (International Conference on Learning Representations, 2026)