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Donghyeon Ki

3 accepted papers

2025

Adaptive Non-Uniform Timestep Sampling for Accelerating Diffusion Model Training

CVPR 2025poster

As a highly expressive generative model, diffusion models have demonstrated exceptional success across various domains, including image generation, natural language processing, and combinatorial optimization. However, as data distributions grow more complex, training these models to convergence beco…

Cited by 0SourcePDFScholar
2025

Prior-Guided Diffusion Planning for Offline Reinforcement Learning

NeurIPS 2025poster

Diffusion models have recently gained prominence in offline reinforcement learning due to their ability to effectively learn high-performing, generalizable policies from static datasets. Diffusion-based planners facilitate long-horizon decision-making by generating high-quality trajectories through…

Cited by 13SourcecodeScholar
2024

Relaxed Stationary Distribution Correction Estimation for Improved Offline Policy Optimization

AAAI 2024technical

One of the major challenges of offline reinforcement learning (RL) is dealing with distribution shifts that stem from the mismatch between the trained policy and the data collection policy. Stationary distribution correction estimation algorithms (DICE) have addressed this issue by regularizing the…

Cited by 1SourcePDFScholar