Related papers: Discriminator Guidance for Autoregressive Diffusion Models

Discriminator Guidance for Autoregressive Diffusion Models

URL: http://arxiv.org/abs/2310.15817v2
Date: Sat, 21 Sep 2024 12:34:38 GMT
Title: Discriminator Guidance for Autoregressive Diffusion Models
Authors: Filip Ekström Kelvinius, Fredrik Lindsten,
Abstract summary: We introduce discriminator guidance in the setting of Autoregressive Diffusion Models. We derive ways of using a discriminator together with a pretrained generative model in the discrete case.
Score: 12.139222986297264
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: 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.

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