Mitigating Diffusion Model Hallucinations with Dynamic Guidance

• URL: http://arxiv.org/abs/2510.05356v1
• Date: Mon, 06 Oct 2025 20:31:13 GMT
• Title: Mitigating Diffusion Model Hallucinations with Dynamic Guidance
• Authors: Kostas Triaridis, Alexandros Graikos, Aggelina Chatziagapi, Grigorios G. Chrysos, Dimitris Samaras,
• Abstract summary: Diffusion models often produce hallucinatory samples with structural inconsistencies that lie outside of the support of the true data distribution.<n>We introduce Dynamic Guidance, which mitigates hallucinations by selectively sharpening the score function only along the pre-determined directions known to cause artifacts.<n>To our knowledge, this is the first approach that addresses hallucinations at generation time rather than through post-hoc filtering.
• Score: 75.90458880492054
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Diffusion models, despite their impressive demos, often produce hallucinatory samples with structural inconsistencies that lie outside of the support of the true data distribution. Such hallucinations can be attributed to excessive smoothing between modes of the data distribution. However, semantic interpolations are often desirable and can lead to generation diversity, thus we believe a more nuanced solution is required. In this work, we introduce Dynamic Guidance, which tackles this issue. Dynamic Guidance mitigates hallucinations by selectively sharpening the score function only along the pre-determined directions known to cause artifacts, while preserving valid semantic variations. To our knowledge, this is the first approach that addresses hallucinations at generation time rather than through post-hoc filtering. Dynamic Guidance substantially reduces hallucinations on both controlled and natural image datasets, significantly outperforming baselines.

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