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Reconstructing visual stimuli from fMRI signals is a central challenge bridging machine learning and neuroscience. Recent diffusion-based methods typically map fMRI activity to a single high-level embedding, using it as fixed guidance…

计算机视觉与模式识别 · 计算机科学 2025-10-28 Xu Zhang , Ruijie Quan , Wenguan Wang , Yi Yang

Diffusion models are powerful generative models that map noise to data using stochastic processes. However, for many applications such as image editing, the model input comes from a distribution that is not random noise. As such, diffusion…

计算机视觉与模式识别 · 计算机科学 2023-12-06 Linqi Zhou , Aaron Lou , Samar Khanna , Stefano Ermon

Diffusion MRI is a non-invasive, in-vivo biomedical imaging method for mapping tissue microstructure. Applications include structural connectivity imaging of the human brain and detecting microstructural neural changes. However, acquiring…

图像与视频处理 · 电气工程与系统科学 2023-10-09 Amir Sadikov , Xinlei Pan , Hannah Choi , Lanya T. Cai , Pratik Mukherjee

Diffusion Transformers (DiTs) achieve state-of-the-art performance in text-to-image synthesis but remain computationally expensive due to the iterative nature of denoising and the quadratic cost of global attention. In this work, we observe…

计算机视觉与模式识别 · 计算机科学 2026-01-21 Bowen Lin , Fanjiang Ye , Yihua Liu , Zhenghui Guo , Boyuan Zhang , Weijian Zheng , Yufan Xu , Tiancheng Xing , Yuke Wang , Chengming Zhang

This work proposes a novel channel estimator based on diffusion models (DMs), one of the currently top-rated generative models. Contrary to related works utilizing generative priors, a lightweight convolutional neural network (CNN) with…

信号处理 · 电气工程与系统科学 2024-03-07 Benedikt Fesl , Michael Baur , Florian Strasser , Michael Joham , Wolfgang Utschick

Dynamic effective connectivity networks (dECNs) reveal the changing directed brain activity and the dynamic causal influences among brain regions, which facilitate the identification of individual differences and enhance the understanding…

机器学习 · 计算机科学 2025-02-03 Faming Xu , Yiding Wang , Chen Qiao , Gang Qu , Vince D. Calhoun , Julia M. Stephen , Tony W. Wilson , Yu-Ping Wang

Integrating the brain structural and functional connectivity features is of great significance in both exploring brain science and analyzing cognitive impairment clinically. However, it remains a challenge to effectively fuse structural and…

神经元与认知 · 定量生物学 2023-05-25 Qiankun Zuo , Baiying Lei , Ning Zhong , Yi Pan , Shuqiang Wang

In the visual generative area, discrete diffusion models are gaining traction for their efficiency and compatibility. However, pioneered attempts still fall behind their continuous counterparts, which we attribute to noise (absorbing state)…

计算机视觉与模式识别 · 计算机科学 2025-09-30 Tianren Ma , Xiaosong Zhang , Boyu Yang , Junlan Feng , Qixiang Ye

Hypergraph data, which capture multi-way interactions among entities, are increasingly prevalent in the big data era. Generating new hyperlinks from an observed, usually high-dimensional hypergraph is an important yet challenging task with…

统计方法学 · 统计学 2026-05-14 Shihao Wu , Junyi Yang , Gongjun Xu , Ji Zhu

Reconfigurable intelligent surfaces (RISs) have been recognized as a revolutionary technology for future wireless networks. However, RIS-assisted communications have to continuously tune phase-shifts relying on accurate channel state…

信号处理 · 电气工程与系统科学 2025-01-15 Jie Zhang , Yiyang Ni , Jun Li , Guangji Chen , Zhe Wang , Long Shi , Shi Jin , Wen Chen , H. Vincent Poor

Mild cognitive impairment(MCI) is a precursor of Alzheimer's disease(AD), and the detection of MCI is of great clinical significance. Analyzing the structural brain networks of patients is vital for the recognition of MCI. However, the…

神经元与认知 · 定量生物学 2022-08-19 Heng Kong , Shuqiang Wang

Mapping from functional connectivity (FC) to structural connectivity (SC) can facilitate multimodal brain network fusion and discover potential biomarkers for clinical implications. However, it is challenging to directly bridge the reliable…

计算机视觉与模式识别 · 计算机科学 2026-04-01 Qiankun Zuo , Bangjun Lei , Wanyu Qiu , Changhong Jing , Jin Hong , Shuqiang Wang

Recent studies have shown that diffusion models produce superior synthetic images when compared to Generative Adversarial Networks (GANs). However, their outputs are often non-deterministic and lack high fidelity to the ground truth due to…

图像与视频处理 · 电气工程与系统科学 2025-03-31 Qisheng He , Nicholas Summerfield , Peiyong Wang , Carri Glide-Hurst , Ming Dong

Remote sensing semantic segmentation must address both what the ground objects are within an image and where they are located. Consequently, segmentation models must ensure not only the semantic correctness of large-scale patches…

计算机视觉与模式识别 · 计算机科学 2026-01-28 Hao Wang , Keyan Hu , Xin Guo , Haifeng Li , Chao Tao

With the development of artificial intelligence (AI) techniques, implementing AI-based techniques to improve wireless transceivers becomes an emerging research topic. Within this context, AI-based channel characterization and estimation…

信号处理 · 电气工程与系统科学 2025-10-29 Yuzhi Yang , Sen Yan , Weijie Zhou , Brahim Mefgouda , Ridong Li , Zhaoyang Zhang , Mérouane Debbah

Divergent brain connectivity is thought to underlie the behavioral and cognitive symptoms observed in many neurodevelopmental disorders. Quantifying divergence from neurotypical connectivity patterns offers a promising pathway to inform…

神经元与认知 · 定量生物学 2024-11-19 Rui Sherry Shen , Yusuf Osmanlıoğlu , Drew Parker , Darien Aunapu , Benjamin E. Yerys , Birkan Tunç , Ragini Verma

Brain networks, graphical models such as those constructed from MRI, have been widely used in pathological prediction and analysis of brain functions. Within the complex brain system, differences in neuronal connection strengths parcellate…

机器学习 · 计算机科学 2023-05-09 Wei Dai , Hejie Cui , Xuan Kan , Ying Guo , Sanne van Rooij , Carl Yang

Mild cognitive impairment (MCI) is characterized by subtle changes in cognitive functions, often associated with disruptions in brain connectivity. The present study introduces a novel fine-grained analysis to examine topological…

计算机视觉与模式识别 · 计算机科学 2024-08-29 Ninad Aithal , Debanjali Bhattacharya , Neelam Sinha , Thomas Gregor Issac

Attention Deficit Hyperactivity Disorder (ADHD) is a prevalent neurodevelopmental disorder whose neuroimaging-based diagnosis remains challenging due to complex time-varying disruptions in brain connectivity. Functional MRI (fMRI) provides…

机器学习 · 计算机科学 2026-03-30 Qurat Ul Ain , Alptekin Temizel , Soyiba Jawed

This paper focuses on wireless multiple-input multiple-output (MIMO)-orthogonal frequency division multiplex (OFDM) receivers. Traditional wireless receivers have relied on mathematical modeling and Bayesian inference, achieving remarkable…

信号处理 · 电气工程与系统科学 2026-01-30 Yuzhi Yang , Omar Alhussein , Atefeh Arani , Zhaoyang Zhang , Mérouane Debbah