Papers › Truncated Diffusion Probabilistic Models and Diffusion-based Adversarial Auto-Encoders
Truncated Diffusion Probabilistic Models and Diffusion-based Adversarial Auto-Encoders
Huangjie Zheng, Pengcheng He, Weizhu Chen, Mingyuan Zhou
Employing a forward diffusion chain to gradually map the data to a noise distribution, diffusion-based generative models learn how to generate the data by inferring a reverse diffusion chain. However, this approach is slow and costly because it needs many forward and reverse steps. We propose a faster and cheaper approach that adds noise not until the data become pure random noise, but until they reach a hidden noisy data distribution that we can confidently learn. Then, we use fewer reverse steps to generate data by starting from this hidden distribution that is made similar to the noisy data. We reveal that the proposed model can be cast as an adversarial auto-encoder empowered by both the diffusion process and a learnable implicit prior. Experimental results show even with a significantly smaller number of reverse diffusion steps, the proposed truncated diffusion probabilistic models can provide consistent improvements over the non-truncated ones in terms of performance in both unconditional and text-guided image generations.
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Tasks
Results from the paper archive 2025-07-28
| Task | Dataset | Model | Metric | Value | Rank at snapshot | Leaderboard | Report |
|---|---|---|---|---|---|---|---|
| Image Generation | LSUN Bedroom 256 x 256 | TDPM+ (TTrunc=99) | FID | 1.88 | #3 of 32 | Archive leaderboard | report |
| Image Generation | LSUN Bedroom 256 x 256 | TDPM+ (TTrunc=99) | NFE | 100 | #3 of 32 | Archive leaderboard | report |
| Image Generation | LSUN Churches 256 x 256 | TDPM+ (TTrunc=99) | FID | 3.98 | #12 of 27 | Archive leaderboard | report |
| Image Generation | LSUN Churches 256 x 256 | TDPM+ (TTrunc=99) | NFE | 100 | #12 of 27 | Archive leaderboard | report |
| Text-to-Image Generation | COCO (Common Objects in Context) | TLDM | FID | 6.29 | #8 of 69 | Archive leaderboard | report |
| Text-to-Image Generation | CUB | TLDM | FID | 6.72 | #2 of 20 | Archive leaderboard | report |
Ranks are positions in the archive's leaderboards as they stood at the 2025-07-28 snapshot. Results published since then are not among these rows, so a rank here is not a current standing.
Methods
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