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Score-based diffusion models are a highly effective method for generating samples from a distribution of images. We consider scenarios where the training data comes from a noisy version of the target distribution, and present an efficiently…

Machine Learning · Statistics 2025-09-30 Dennis Elbrächter , Giovanni S. Alberti , Matteo Santacesaria

This study introduces a training-free conditional diffusion model for learning unknown stochastic differential equations (SDEs) using data. The proposed approach addresses key challenges in computational efficiency and accuracy for modeling…

Machine Learning · Computer Science 2024-10-07 Yanfang Liu , Yuan Chen , Dongbin Xiu , Guannan Zhang

Reinforcement learning combined with imitation learning has significantly advanced biomimetic quadrupedal locomotion. However, scaling these frameworks to massive, multi-source datasets exposes fundamental bottlenecks. First, traditional…

Robotics · Computer Science 2026-05-13 Jianhui Chen , Ruixin Zhan , Liu Liu , Yang Cai , Ziqiao Li

Score-based diffusion models are a class of generative models whose dynamics is described by stochastic differential equations that map noise into data. While recent works have started to lay down a theoretical foundation for these models,…

By leveraging the text-to-image diffusion priors, score distillation can synthesize 3D contents without paired text-3D training data. Instead of spending hours of online optimization per text prompt, recent studies have been focused on…

Computer Vision and Pattern Recognition · Computer Science 2024-07-03 Zhiyuan Ma , Yuxiang Wei , Yabin Zhang , Xiangyu Zhu , Zhen Lei , Lei Zhang

Neural network-based methods for (un)conditional density estimation have recently gained substantial attention, as various neural density estimators have outperformed classical approaches in real-data experiments. Despite these empirical…

Machine Learning · Statistics 2025-10-02 Dehao Dai , Jianqing Fan , Yihong Gu , Debarghya Mukherjee

Diffusion-based representation learning has achieved substantial attention due to its promising capabilities in latent representation and sample generation. Recent studies have employed an auxiliary encoder to identify a corresponding…

Machine Learning · Computer Science 2025-03-11 Yeongmin Kim , Kwanghyeon Lee , Minsang Park , Byeonghu Na , Il-Chul Moon

Unpaired image-to-image translation involves learning mappings between source domain and target domain in the absence of aligned or corresponding samples. Score based diffusion models have demonstrated state-of-the-art performance in…

Computer Vision and Pattern Recognition · Computer Science 2025-10-07 Venkata Narendra Kotyada , Revanth Eranki , Nagesh Bhattu Sristy

While Diffusion Transformers (DiTs) have achieved notable progress in video generation, this long-sequence generation task remains constrained by the quadratic complexity inherent to self-attention mechanisms, creating significant barriers…

Computer Vision and Pattern Recognition · Computer Science 2026-02-04 Yuxi Liu , Yipeng Hu , Zekun Zhang , Kunze Jiang , Kun Yuan

Diffusion model-based channel estimators have shown impressive performance but suffer from high computational complexity because they rely on iterative reverse sampling. This paper proposes a sampling-free diffusion transformer (DiT) for…

Signal Processing · Electrical Eng. & Systems 2026-04-28 Zhixiong Chen , Hyundong Shin , Arumugam Nallanathan

Integrated sensing and communications (ISAC) is a key enabler for next-generation wireless systems, aiming to support both high-throughput communication and high-accuracy environmental sensing using shared spectrum and hardware. Theoretical…

Signal Processing · Electrical Eng. & Systems 2025-08-05 Lin Chen , Chang Cai , Huiyuan Yang , Xiaojun Yuan , Ying-Jun Angela Zhang

Due to the high potential for abuse of GenAI systems, the task of detecting synthetic images has recently become of great interest to the research community. Unfortunately, existing image-space detectors quickly become obsolete as new…

Computer Vision and Pattern Recognition · Computer Science 2024-06-14 George Cazenavette , Avneesh Sud , Thomas Leung , Ben Usman

Diffusion- and flow-based policies deliver state-of-the-art performance on long-horizon robotic manipulation and imitation learning tasks. However, these controllers employ a fixed inference budget at every control step, regardless of task…

Robotics · Computer Science 2025-11-27 Inkook Chun , Seungjae Lee , Michael S. Albergo , Saining Xie , Eric Vanden-Eijnden

The Class Incremental Semantic Segmentation (CISS) extends the traditional segmentation task by incrementally learning newly added classes. Previous work has introduced generative replay, which involves replaying old class samples generated…

Computer Vision and Pattern Recognition · Computer Science 2023-08-03 Jingfan Chen , Yuxi Wang , Pengfei Wang , Xiao Chen , Zhaoxiang Zhang , Zhen Lei , Qing Li

Weakly-supervised semantic segmentation (WSSS), which aims to train segmentation models solely using image-level labels, has achieved significant attention. Existing methods primarily focus on generating high-quality pseudo labels using…

Computer Vision and Pattern Recognition · Computer Science 2024-11-27 Wangyu Wu , Tianhong Dai , Xiaowei Huang , Fei Ma , Jimin Xiao

Diffusion Transformers (DiTs) have achieved state-of-the-art (SOTA) image generation quality but suffer from high latency and memory inefficiency, making them difficult to deploy on resource-constrained devices. One major efficiency…

Computer Vision and Pattern Recognition · Computer Science 2025-03-28 Haoran You , Connelly Barnes , Yuqian Zhou , Yan Kang , Zhenbang Du , Wei Zhou , Lingzhi Zhang , Yotam Nitzan , Xiaoyang Liu , Zhe Lin , Eli Shechtman , Sohrab Amirghodsi , Yingyan Celine Lin

This paper studies transmit beamforming design in an integrated sensing and communication (ISAC) system, where a base station sends symbols to perform downlink multi-user communication and sense an extended target simultaneously. We first…

Information Theory · Computer Science 2023-12-19 Yiqiu Wang , Meixia Tao , Shu Sun

Score-based models, trained with denoising score matching, are remarkably effective in generating high dimensional data. However, the high variance of their training objective hinders optimisation. We attempt to reduce it with a control…

Machine Learning · Computer Science 2024-08-23 Paul Jeha , Will Grathwohl , Michael Riis Andersen , Carl Henrik Ek , Jes Frellsen

Controlling complex physics systems is important in diverse domains. While diffusion-based methods have demonstrated advantages over classical model-based approaches and myopic sequential learning methods in achieving global trajectory…

Systems and Control · Electrical Eng. & Systems 2026-02-03 Hongyi Chen , Jingtao Ding , Jianhai Shu , Xinchun Yu , Xiaojun Liang , Yong Li , Xiao-Ping Zhang

Multi-contrast magnetic resonance imaging (MRI) is the most common management tool used to characterize neurological disorders based on brain tissue contrasts. However, acquiring high-resolution MRI scans is time-consuming and infeasible…

Image and Video Processing · Electrical Eng. & Systems 2023-06-08 Ye Mao , Lan Jiang , Xi Chen , Chao Li
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