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Hongkun Dou

8 accepted papers

2026

Constrained Particle Seeking: Solving Diffusion Inverse Problems with Just Forward Passes

AAAI 2026technical

Diffusion models have gained prominence as powerful generative tools for solving inverse problems due to their ability to model complex data distributions. However, existing methods typically rely on complete knowledge of the forward observation process to compute gradients for guided sampling, limi

Cited by 0SourcePDFScholar
2026

Plug-and-Play Guidance for Discrete Diffusion Models via Gradient-Informed Logit Correction

ICML 2026poster

Controllable generation with discrete diffusion models is often hindered by high computational overhead or the need for retraining. In this paper, we present Gradient-Informed Logit Correction (GILC), a plug-and-play framework that efficiently estimates guidance signals by repurposing the pretrained…

Cited by 0SourceScholar
2025

DPoser-X: Diffusion Model as Robust 3D Whole-body Human Pose Prior

ICCV 2025poster

We present DPoser-X, a diffusion-based prior model for 3D whole-body human poses. Building a versatile and robust full-body human pose prior remains challenging due to the inherent complexity of articulated human poses and the scarcity of high-quality whole-body pose datasets. To address these limit…

Cited by 0SourcePDFScholar
2025

Hybrid Regularization Improves Diffusion-based Inverse Problem Solving

ICLR 2025poster

Diffusion models, recognized for their effectiveness as generative priors, have become essential tools for addressing a wide range of visual challenges. Recently, there has been a surge of interest in leveraging Denoising processes for Regularization (DR) to solve inverse problems. However, existing…

Cited by 0SourcePDFScholar
2025

Physics-aligned field reconstruction with diffusion bridge

ICLR 2025spotlight

The reconstruction of physical fields from sparse measurements is pivotal in both scientific research and engineering applications. Traditional methods are increasingly supplemented by deep learning models due to their efficacy in extracting features from data. However, except for the low accuracy o…

2025

Value-aligned Behavior Cloning for Offline Reinforcement Learning via Bi-level Optimization

ICLR 2025poster

Offline reinforcement learning (RL) aims to optimize policies under pre-collected data, without requiring any further interactions with the environment. Derived from imitation learning, Behavior cloning (BC) is extensively utilized in offline RL for its simplicity and effectiveness. Although BC inhe…

Cited by 0SourcePDFScholar
2023

Task-aware world model learning with meta weighting via bi-level optimization

NeurIPS 2023poster

Aligning the world model with the environment for the agent’s specific task is crucial in model-based reinforcement learning. While value-equivalent models may achieve better task awareness than maximum-likelihood models, they sacrifice a large amount of semantic information and face implementation…

2022

Boosting Supervised Dehazing Methods via Bi-Level Patch Reweighting

ECCV 2022poster

"Natural images can suffer from non-uniform haze distributions in different regions. However, this important fact is hardly considered in existing supervised dehazing methods, in which all training patches are accounted for equally in the loss design. These supervised methods may fail in making prom…

Cited by 8SourcePDFScholar