AION
Research paperLarge Language Models · Image, Video & 3D Generation1 source · Oct 7, 2026

Enabling Preference-driven Unlearning in Few-step Distilled Text-to-Image Diffusion Models

Text-to-image diffusion models are increasingly distilled into few-step variants and being deployed to enable fast inference.

Key points

  • Data-driven unlearning methods suppress targeted generations by fine-tuning model weights using specialized unlearning objectives.
  • Hence, we address this limitation with a preference-driven unlearning framework that revisits Direct Preference Optimization (DPO) for diffusion models.
  • We show that standard DPO and its unlearning derivatives, formulated around noise-prediction error, transfer poorly to FSD models due to their altered generation dynamics.
  • To overcome this, we introduce a modified preference optimization formulation explicitly aligned with the few-step generation properties, enabling direct concept removal in FSD models while preserving few-step efficiency and maintaining strong retention of desirable (non-targeted) capabilities.

Sources (1)

Extractive summary: sentences quoted from the sources.