Publications

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2026

Conference

MotionCFG: Boosting Motion Dynamics via Semantic Motion Sharpening

Byungjun Kim, Soobin Um†, Jong Chul Ye†

Co-Corresponding
NeurIPS 2026
Video Generation Motion Dynamics Diffusion Models
Conference

Self-Improving Diffusion Classifiers with Minority Preference Optimization

Hyunsoo Kim, Jungmyung Wi, Soobin Um, Donghyun Kim, Suhyun Kim

ECCV 2026
Diffusion Classifiers Preference Optimization Minority Sampling
Conference

Beyond Generative Priors: Minority Sampling with JEPA-Guided Diffusion

Sol Park, Soobin Um

Sole Corresponding
ICML 2026
Diffusion Models Minority Sampling World Models
Conference

Diverse Text-to-Image Generation via Contrastive Noise Optimization

Byungjun Kim*, Soobin Um*, Jong Chul Ye

Co-First
ICLR 2026
Text-to-Image Diffusion Models Diversity
Journal

Physics-Guided and Fabrication-Aware Inverse Design of Photonic Devices Using Diffusion Models

Dongjin Seo*, Soobin Um*, Sangbin Lee, Jong Chul Ye, Haejun Chung

Co-First
ACS Photonics
AI for Science Diffusion Models Photonics

2025

Conference

DPAIL: Training Diffusion Policy for Adversarial Imitation Learning without Policy Optimization

Yunseon Choi, Minchan Jeong, Soobin Um, Kee-Eung Kim

NeurIPS 2025
Reinforcement Learning Diffusion Policy Imitation Learning
Conference

Boost-and-Skip: A Simple Guidance-Free Diffusion for Minority Generation

Soobin Um*, Beomsu Kim*, Jong Chul Ye

Co-First
ICML 2025
Diffusion Models Minority Sampling Diversity
Conference

Minority-Focused Text-to-Image Generation via Prompt Optimization

Soobin Um, Jong Chul Ye

Sole First
CVPR 2025 — Oral Presentation (top 0.74%)
Text-to-Image Prompt Optimization Minority Sampling

2024

Conference

Self-Guided Generation of Minority Samples Using Diffusion Models

Soobin Um, Jong Chul Ye

Sole First
ECCV 2024
Diffusion Models Minority Sampling Self-Guidance
Conference

Don't Play Favorites: Minority Guidance for Diffusion Models

Soobin Um, Suhyeon Lee, Jong Chul Ye

Sole First
ICLR 2024
Diffusion Models Minority Sampling Medical Imaging

2023

Conference

A Fair Generative Model Using LeCam Divergence

Soobin Um, Changho Suh

Sole First
AAAI 2023 — Oral Presentation
Generative Adverasrial Networks (GANs) Fairness Data Shortage

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