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Concept Factorization (CF) models have attracted widespread attention due to their excellent performance in data clustering. In recent years, many variant models based on CF have achieved great success in clustering by taking into account…

Machine Learning · Computer Science 2025-05-07 Zhengqin Yang , Di Wu , Jia Chen , Xin Luo

Graphs play a crucial role in data mining and machine learning, representing real-world objects and interactions. As graph datasets grow, managing large, decentralized subgraphs becomes essential, particularly within federated learning…

Machine Learning · Computer Science 2024-10-21 Ömer Faruk Akgül , Rajgopal Kannan , Viktor Prasanna

Inverse inference, or "brain reading", is a recent paradigm for analyzing functional magnetic resonance imaging (fMRI) data, based on pattern recognition and statistical learning. By predicting some cognitive variables related to brain…

This paper demonstrates a self-supervised framework for learning voxel-wise coarse-to-fine representations tailored for dense downstream tasks. Our approach stems from the observation that existing methods for hierarchical representation…

Computer Vision and Pattern Recognition · Computer Science 2024-05-28 Eytan Kats , Jochen G. Hirsch , Mattias P. Heinrich

Foundation models (FMs) have emerged as a transformative paradigm in medical image analysis, offering the potential to provide generalizable, task-agnostic solutions across a wide range of clinical tasks and imaging modalities. Their…

Computer Vision and Pattern Recognition · Computer Science 2025-11-04 Karma Phuntsho , Abdullah , Kyungmi Lee , Ickjai Lee , Euijoon Ahn

Now over 20 years old, functional MRI (fMRI) has a large and growing literature that is best synthesised with meta-analytic tools. As most authors do not share image data, only the peak activation coordinates (foci) reported in the paper…

Magnetic resonance imaging (MRI) is crucial for enhancing diagnostic accuracy in clinical settings. However, the inherent long scan time of MRI restricts its widespread applicability. Deep learning-based image super-resolution (SR) methods…

Image and Video Processing · Electrical Eng. & Systems 2024-02-19 Hao Li , Quanwei Liu , Jianan Liu , Xiling Liu , Yanni Dong , Tao Huang , Zhihan Lv

While medical imaging typically provides massive amounts of data, the extraction of relevant information for predictive diagnosis remains a difficult challenge. Functional MRI (fMRI) data, that provide an indirect measure of task-related or…

Computer Vision and Pattern Recognition · Computer Science 2011-02-22 Vincent Michel , Alexandre Gramfort , Gaël Varoquaux , Evelyn Eger , Bertrand Thirion

Hyperalignment has been widely employed in Multivariate Pattern (MVP) analysis to discover the cognitive states in the human brains based on multi-subject functional Magnetic Resonance Imaging (fMRI) datasets. Most of the existing HA…

Machine Learning · Statistics 2020-01-10 Muhammad Yousefnezhad , Alessandro Selvitella , Liangxiu Han , Daoqiang Zhang

The ability to combine data across scanners and studies is vital for neuroimaging, to increase both statistical power and the representation of biological variability. However, combining datasets across sites leads to two challenges: first,…

Machine Learning · Computer Science 2022-06-01 Nicola K Dinsdale , Mark Jenkinson , Ana IL Namburete

Many real-world graphs involve different types of nodes and relations between nodes, being heterogeneous by nature. The representation learning of heterogeneous graphs (HGs) embeds the rich structure and semantics of such graphs into a…

Machine Learning · Computer Science 2021-09-16 Costas Mavromatis , George Karypis

Graph representation learning received increasing attentions in recent years. Most of existing methods ignore the complexity of the graph structures and restrict graphs in a single constant-curvature representation space, which is only…

Machine Learning · Computer Science 2021-12-13 Li Sun , Zhongbao Zhang , Junda Ye , Hao Peng , Jiawei Zhang , Sen Su , Philip S. Yu

In recent years, research on decoding brain activity based on functional magnetic resonance imaging (fMRI) has made remarkable achievements. However, constraint-free natural image reconstruction from brain activity is still a challenge. The…

Computer Vision and Pattern Recognition · Computer Science 2018-01-17 Chi Zhang , Kai Qiao , Linyuan Wang , Li Tong , Ying Zeng , Bin Yan

Many analyses of functional magnetic resonance imaging (fMRI) examine functional connectivity (FC), or the statistical dependencies among distant brain regions. These analyses are typically exploratory, guiding future confirmatory research.…

Applications · Statistics 2025-10-20 Kyle Stanley , Nicole Lazar , Matthew Reimherr

Federated Learning (FL) addresses the need to create models based on proprietary data in such a way that multiple clients retain exclusive control over their data, while all benefit from improved model accuracy due to pooled resources.…

Machine Learning · Computer Science 2024-10-23 Urszula Chajewska , Harsh Shrivastava

Brain connectivity alternations associated with brain disorders have been widely reported in resting-state functional imaging (rs-fMRI) and diffusion tensor imaging (DTI). While many dual-modal fusion methods based on graph neural networks…

Computer Vision and Pattern Recognition · Computer Science 2024-11-14 Feiyu Yin , Yu Lei , Siyuan Dai , Wenwen Zeng , Guoqing Wu , Liang Zhan , Jinhua Yu

Graph neural networks (GNNs) present a promising alternative to CNNs and transformers in certain image processing applications due to their parameter-efficiency in modeling spatial relationships. Currently, a major area of research involves…

Image and Video Processing · Electrical Eng. & Systems 2023-12-01 Sahar Almahfouz Nasser , Shashwat Pathak , Keshav Singhal , Mohit Meena , Nihar Gupte , Ananya Chinmaya , Prateek Garg , Amit Sethi

We introduce a conceptually simple yet effective model for self-supervised representation learning with graph data. It follows the previous methods that generate two views of an input graph through data augmentation. However, unlike…

Machine Learning · Computer Science 2021-10-29 Hengrui Zhang , Qitian Wu , Junchi Yan , David Wipf , Philip S. Yu

Although self-supervised learning enables us to bootstrap the training by exploiting unlabeled data, the generic self-supervised methods for natural images do not sufficiently incorporate the context. For medical images, a desirable method…

Image and Video Processing · Electrical Eng. & Systems 2022-07-08 Li Sun , Ke Yu , Kayhan Batmanghelich

Can neural networks learn to compare graphs without feature engineering? In this paper, we show that it is possible to learn representations for graph similarity with neither domain knowledge nor supervision (i.e.\ feature engineering or…

Machine Learning · Computer Science 2019-04-23 Rami Al-Rfou , Dustin Zelle , Bryan Perozzi