PixArt-\ alpha: Fast Training of Diffusion Transformer for Photorealistic Text-to-Image Synthesis - Chen, Junsong; YU, Jincheng; GE, Chongjian; Yao, Lewei; Xie, Enze; Wang, Zhongdao; Kwok, James; Luo, Ping; Lu, Huchuan; Li, Zhenguo (International Conference on Learning Representations, 2024)