@article{pixartsweaktostrongtrainingofdiffusion,
  title = {PixArt-Σ: Weak-to-Strong Training of Diffusion Transformer for 4K Text-to-Image Generation},
  author = {Junsong Chen and Chongjian Ge and Enze Xie and Yue Wu and Lewei Yao and Xiaozhe Ren and Zhongdao Wang and Ping Luo and Huchuan Lu and Zhenguo Li},
  year = {2024},
  eprint = {2403.04692},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2403.04692v2},
}