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Yong-Hyun Park

4 accepted papers

2026

Concept-TRAK: Understanding how diffusion models learn concepts through concept attribution

ICLR 2026poster

While diffusion models excel at image generation, their growing adoption raises critical concerns about copyright issues and model transparency. Existing attribution methods identify training examples influencing an entire image, but fall short in isolating contributions to specific elements, such a…

Cited by 0SourcecodeScholar
2025

Jump Your Steps: Optimizing Sampling Schedule of Discrete Diffusion Models

ICLR 2025poster

Diffusion models have seen notable success in continuous domains, leading to the development of discrete diffusion models (DDMs) for discrete variables. Despite recent advances, DDMs face the challenge of slow sampling speeds. While parallel sampling methods like $\tau$-leaping accelerate this proce…

Cited by 3SourcePDFScholar
2024

Direct Unlearning Optimization for Robust and Safe Text-to-Image Models

NeurIPS 2024poster

Recent advancements in text-to-image (T2I) models have greatly benefited from large-scale datasets, but they also pose significant risks due to the potential generation of unsafe content. To mitigate this issue, researchers proposed unlearning techniques that attempt to induce the model to unlearn p…

Cited by 13SourcePDFScholar
2023

Understanding the Latent Space of Diffusion Models through the Lens of Riemannian Geometry

NeurIPS 2023poster

Despite the success of diffusion models (DMs), we still lack a thorough understanding of their latent space. To understand the latent space $\mathbf{x}_t \in \mathcal{X}$, we analyze them from a geometrical perspective. Our approach involves deriving the local latent basis within $\mathcal{X}$ by le…