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Discriminator Guida...
Discriminator Guidance for Autoregressive Diffusion Models
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- Ekström Kelvinius, Filip (författare)
- Linköpings universitet,Statistik och maskininlärning,Tekniska fakulteten
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- Lindsten, Fredrik, 1984- (författare)
- Linköpings universitet,Statistik och maskininlärning,Tekniska fakulteten
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(creator_code:org_t)
- PMLR, 2024
- 2024
- Engelska.
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Ingår i: Proceedings of The 27th International Conference on Artificial Intelligence and Statistics. - : PMLR. ; , s. 3403-3411
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Abstract
Ämnesord
Stäng
- We introduce discriminator guidance in the setting of Autoregressive Diffusion Models. The use of a discriminator to guide a diffusion process has previously been used for continuous diffusion models, and in this work we derive ways of using a discriminator together with a pretrained generative model in the discrete case. First, we show that using an optimal discriminator will correct the pretrained model and enable exact sampling from the underlying data distribution. Second, to account for the realistic scenario of using a sub-optimal discriminator, we derive a sequential Monte Carlo algorithm which iteratively takes the predictions from the discriminator into account during the generation process. We test these approaches on the task of generating molecular graphs and show how the discriminator improves the generative performance over using only the pretrained model.
Ämnesord
- NATURVETENSKAP -- Data- och informationsvetenskap (hsv//swe)
- NATURAL SCIENCES -- Computer and Information Sciences (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)