T-Stitch: Accelerating Sampling in Pre-Trained Diffusion Models with Trajectory Stitching - Pan, Zizheng; Zhuang, Bohan; Huang, De-An; Nie, Weili; Yu, Zhiding; Xiao, Chaowei; Cai, Jianfei; anandkumar, anima (International Conference on Learning Representations, 2025)