@article{gu2022f,
  title={f-DM: A Multi-stage Diffusion Model via Progressive Signal Transformation},
  author={Gu, Jiatao and Zhai, Shuangfei and Zhang, Yizhe and Bautista, Miguel Angel and Susskind, Josh},
  journal={arXiv preprint arXiv:2210.04955},
  year={2022}
}