LEDiT: Your Length-Extrapolatable Diffusion Transformer without Positional Encoding - Zhang, Shen; Liang, Siyuan; Tan, Yaning; Chen, Zhaowei; Li, Linze; Wu, Ge; Chen, Yuhao; Li, Shuheng; Zhao, Zhenyu; Chen, Caihua; Liang, Jiajun; Tang, Yao (Advances in Neural Information Processing Systems, 2025)