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This paper presents DNAct, a language-conditioned multi-task policy framework that integrates neural rendering pre-training and diffusion training to enforce multi-modality learning in action sequence spaces. To learn a generalizable…

Robotics · Computer Science 2024-03-11 Ge Yan , Yueh-Hua Wu , Xiaolong Wang

Diffusion policies are competitive for offline reinforcement learning (RL) but are typically guided at sampling time by heuristics that lack a statistical notion of risk. We introduce LRT-Diffusion, a risk-aware sampling rule that treats…

Machine Learning · Computer Science 2026-02-20 Ximan Sun , Xiang Cheng

Diffusion models have demonstrated excellent performance for real-world image super-resolution (Real-ISR), albeit at high computational costs. Most existing methods are trying to derive one-step diffusion models from multi-step counterparts…

Computer Vision and Pattern Recognition · Computer Science 2025-03-11 Jianze Li , Jiezhang Cao , Zichen Zou , Xiongfei Su , Xin Yuan , Yulun Zhang , Yong Guo , Xiaokang Yang

Bimanual manipulation is essential in robotics, yet developing foundation models is extremely challenging due to the inherent complexity of coordinating two robot arms (leading to multi-modal action distributions) and the scarcity of…

Robotics · Computer Science 2025-03-04 Songming Liu , Lingxuan Wu , Bangguo Li , Hengkai Tan , Huayu Chen , Zhengyi Wang , Ke Xu , Hang Su , Jun Zhu

Closed-loop control of nonlinear dynamical systems with partial-state observability demands expert knowledge of a diverse, less standardized set of theoretical tools. Moreover, it requires a delicate integration of controller and estimator…

Systems and Control · Electrical Eng. & Systems 2024-04-04 Xiangyuan Zhang , Weichao Mao , Haoran Qiu , Tamer Başar

Classifier free guidance has shown strong potential in diffusion-based reinforcement learning. However, existing methods rely on joint training of the guidance module and the diffusion model, which can be suboptimal during the early stages…

Machine Learning · Computer Science 2025-06-05 Zhaoyang Chen , Cody Fleming

Generative Flow Networks (GFlowNets) excel at sampling diverse, high-reward objects. In many practical applications where active reward queries are infeasible, these models must be trained using static offline datasets. Prevailing training…

Machine Learning · Computer Science 2026-05-26 Ruishuo Chen , Xun Wang , Rui Hu , Zhuoran Li , Longbo Huang

Multi-object tracking (MOT) is a fundamental task in computer vision with critical applications in autonomous driving and robotics. Multimodal MOT that integrates visible light and thermal infrared information is particularly essential for…

Computer Vision and Pattern Recognition · Computer Science 2025-12-01 Weiran Li , Yeqiang Liu , Yijie Wei , Mina Han , Qiannan Guo , Zhenbo Li

Network optimization remains fundamental in wireless communications, with Artificial Intelligence (AI)-based solutions gaining widespread adoption. As Sixth-Generation (6G) communication networks pursue full-scenario coverage, optimization…

Networking and Internet Architecture · Computer Science 2025-04-23 Feiran You , Hongyang Du , Xiangwang Hou , Yong Ren , Kaibin Huang

Transformer-based Diffusion Probabilistic Models (DPMs) have shown more potential than CNN-based DPMs, yet their extensive computational requirements hinder widespread practical applications. To reduce the computation budget of…

Computer Vision and Pattern Recognition · Computer Science 2024-11-01 Xinwang Chen , Ning Liu , Yichen Zhu , Feifei Feng , Jian Tang

Reinforcement learning with stochastic optimal control offers a promising framework for diffusion fine-tuning, where a pre-trained diffusion model is optimized to generate paths that lead to a reward-tilted distribution. While these…

Machine Learning · Computer Science 2025-09-30 Sophia Tang , Yuchen Zhu , Molei Tao , Pranam Chatterjee

Diffusion and flow models achieve State-Of-The-Art (SOTA) generative performance, yet many practically important behaviors such as fine-grained prompt fidelity, compositional correctness, and text rendering are weakly specified by score or…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Yuanzhi Zhu , Xi Wang , Stéphane Lathuilière , Vicky Kalogeiton

Voxel-wise dose prediction is a critical yet challenging task in practical radiotherapy (RT) planning, as bespoke models trained from scratch often struggle to generalize across diverse clinical settings. Meanwhile, generative models…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Yuhan Wang , Zihan Li , Han Liu , Simon Arberet , Martin Kraus , Yuyin Zhou , Florin-Cristian Ghesu , Dorin Comaniciu , Ali Kamen , Riqiang Gao

Generative Diffusion Models (GDMs), have made significant strides in modeling complex data distributions across diverse domains. Meanwhile, Deep Reinforcement Learning (DRL) has demonstrated substantial improvements in optimizing Wi-Fi…

Networking and Internet Architecture · Computer Science 2025-01-08 Tie Liu , Xuming Fang , Rong He

Generating safe and reliable trajectories for autonomous vehicles in long-tail scenarios remains a significant challenge, particularly for high-lateral-acceleration maneuvers such as sharp turns, which represent critical safety situations.…

Robotics · Computer Science 2026-01-15 Xuemei Yao , Xiao Yang , Jianbin Sun , Liuwei Xie , Xuebin Shao , Xiyu Fang , Hang Su , Kewei Yang

Generative diffusion models for end-to-end autonomous driving often suffer from mode collapse, tending to generate conservative and homogeneous behaviors. While DiffusionDrive employs predefined anchors representing different driving…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Jialv Zou , Shaoyu Chen , Bencheng Liao , Zhiyu Zheng , Yuehao Song , Lefei Zhang , Qian Zhang , Wenyu Liu , Xinggang Wang

Diffusion model, as a new generative model which is very popular in image generation and audio synthesis, is rarely used in speech enhancement. In this paper, we use the diffusion model as a module for stochastic refinement. We propose…

Sound · Computer Science 2022-11-01 Zhibin Qiu , Mengfan Fu , Yinfeng Yu , LiLi Yin , Fuchun Sun , Hao Huang

Standard Latent Diffusion Models rely on a complex, three-part architecture consisting of a separate encoder, decoder, and diffusion network, which are trained in multiple stages. This modular design is computationally inefficient, leads to…

Computer Vision and Pattern Recognition · Computer Science 2025-11-19 Xiyuan Wang , Muhan Zhang

Many reinforcement learning (RL) tasks have discrete action spaces, but most generative policy methods based on diffusion and flow matching are designed for continuous control. Meanwhile, generative policies usually rely heavily on offline…

Machine Learning · Computer Science 2026-05-13 Fairoz Nower Khan , Nabuat Zaman Nahim , Peizhong Ju

Recent advances in generative models have inspired the field of recommender systems to explore generative approaches, but most existing research focuses on sequence generation, a paradigm ill-suited for click-through rate (CTR) prediction.…

Information Retrieval · Computer Science 2025-08-28 Moyu Zhang , Yun Chen , Yujun Jin , Jinxin Hu , Yu Zhang