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A wide range of models have been proposed for Graph Generative Models, necessitating effective methods to evaluate their quality. So far, most techniques use either traditional metrics based on subgraph counting, or the representations of…

机器学习 · 统计学 2022-06-14 Hamed Shirzad , Kaveh Hassani , Danica J. Sutherland

Brain age estimation from Magnetic Resonance Images (MRI) derives the difference between a subject's biological brain age and their chronological age. This is a potential biomarker for neurodegeneration, e.g. as part of Alzheimer's disease.…

计算机视觉与模式识别 · 计算机科学 2020-10-02 Kyriaki-Margarita Bintsi , Vasileios Baltatzis , Arinbjörn Kolbeinsson , Alexander Hammers , Daniel Rueckert

Graph Convolutional Networks (GCNs) are predominantly tailored for graphs displaying homophily, where similar nodes connect, but often fail on heterophilic graphs. The strategy of adopting distinct approaches to learn from homophilic and…

机器学习 · 计算机科学 2025-04-09 Han Lei , Jiaxing Xu , Xia Dong , Yiping Ke

Graph Neural Networks (GNNs) often assume strong homophily for graph classification, seldom considering heterophily, which means connected nodes tend to have different class labels and dissimilar features. In real-world scenarios, graphs…

机器学习 · 计算机科学 2024-05-10 Jiayi Yang , Sourav Medya , Wei Ye

Several works based on Generative Adversarial Networks (GAN) have been recently proposed to predict a set of medical images from a single modality (e.g, FLAIR MRI from T1 MRI). However, such frameworks are primarily designed to operate on…

机器学习 · 计算机科学 2020-09-24 Alaa Bessadok , Mohamed Ali Mahjoub , Islem Rekik

Graph neural networks (GNNs) based methods have achieved impressive performance on node clustering task. However, they are designed on the homophilic assumption of graph and clustering on heterophilic graph is overlooked. Due to the lack of…

社会与信息网络 · 计算机科学 2023-05-09 Erlin Pan , Zhao Kang

Graph Neural Networks (GNNs) are effective in many applications. Still, there is a limited understanding of the effect of common graph structures on the learning process of GNNs. In this work, we systematically study the impact of community…

机器学习 · 计算机科学 2021-03-08 Hussain Hussain , Tomislav Duricic , Elisabeth Lex , Roman Kern , Denis Helic

Haemorrhaging of the brain is the leading cause of death in people between the ages of 15 and 24 and the third leading cause of death in people older than that. Computed tomography (CT) is an imaging modality used to diagnose neurological…

图像与视频处理 · 电气工程与系统科学 2024-09-02 Ninad Mehendale , Pragya Gupta , Nishant Rajadhyaksha , Ansh Dagha , Mihir Hundiwala , Aditi Paretkar , Sakshi Chavan , Tanmay Mishra

Motor imagery classification is of great significance to humans with mobility impairments, and how to extract and utilize the effective features from motor imagery electroencephalogram(EEG) channels has always been the focus of attention.…

信号处理 · 电气工程与系统科学 2021-09-10 Yan Li , Ning Zhong , David Taniar , Haolan Zhang

Graph Neural Networks have emerged as the most popular architecture for graph-level learning, including graph classification and regression tasks, which frequently arise in areas such as biochemistry and drug discovery. Achieving good…

机器学习 · 计算机科学 2025-03-04 Lukas Fesser , Melanie Weber

Spontaneous brain activity, as observed in functional neuroimaging, has been shown to display reproducible structure that expresses brain architecture and carries markers of brain pathologies. An important view of modern neuroscience is…

机器学习 · 统计学 2010-11-15 Gaël Varoquaux , Alexandre Gramfort , Jean Baptiste Poline , Bertrand Thirion

While a growing body of literature has been studying new Graph Neural Networks (GNNs) that work on both homophilic and heterophilic graphs, little has been done on adapting classical GNNs to less-homophilic graphs. Although the ability to…

机器学习 · 计算机科学 2024-04-30 Shouheng Li , Dongwoo Kim , Qing Wang

Attempts have been made recently in the field of population-based structural health monitoring (PBSHM), to transfer knowledge between SHM models of different structures. The attempts have been focussed on homogeneous and heterogeneous…

机器学习 · 计算机科学 2022-03-04 G. Tsialiamanis , C. Mylonas , E. Chatzi , D. J. Wagg , N. Dervilis , K. Worden

Graph neural networks (GNNs) have been proved powerful in graph-oriented tasks. However, many real-world graphs are heterophilous, challenging the homophily assumption of classical GNNs. To solve the universality problem, many studies…

机器学习 · 计算机科学 2023-10-09 Shengbo Gong , Jiajun Zhou , Chenxuan Xie , Qi Xuan

Generating long-range skeleton-based human actions has been a challenging problem since small deviations of one frame can cause a malformed action sequence. Most existing methods borrow ideas from video generation, which naively treat…

图形学 · 计算机科学 2020-08-18 Ping Yu , Yang Zhao , Chunyuan Li , Junsong Yuan , Changyou Chen

Finding the biomarkers associated with ASD is helpful for understanding the underlying roots of the disorder and can lead to earlier diagnosis and more targeted treatment. A promising approach to identify biomarkers is using Graph Neural…

机器学习 · 计算机科学 2019-07-15 Xiaoxiao Li , Nicha C. Dvornek , Yuan Zhou , Juntang Zhuang , Pamela Ventola , James S. Duncan

Graphs with heterophily have been regarded as challenging scenarios for Graph Neural Networks (GNNs), where nodes are connected with dissimilar neighbors through various patterns. In this paper, we present theoretical understandings of the…

机器学习 · 计算机科学 2024-06-05 Junfu Wang , Yuanfang Guo , Liang Yang , Yunhong Wang

Graph neural network (GNN) models are increasingly being used for the classification of electroencephalography (EEG) data. However, GNN-based diagnosis of neurological disorders, such as Alzheimer's disease (AD), remains a relatively…

神经元与认知 · 定量生物学 2023-12-21 Dominik Klepl , Fei He , Min Wu , Daniel J. Blackburn , Ptolemaios G. Sarrigiannis

Prediction the conversion to early-stage dementia is critical for mitigating its progression but remains challenging due to subtle cognitive impairments and structural brain changes. Traditional T1-weighted magnetic resonance imaging…

计算机视觉与模式识别 · 计算机科学 2024-06-28 Yilin Leng , Wenju Cui , Bai Chen , Xi Jiang , Shuangqing Chen , Jian Zheng

Using predictive models to identify patterns that can act as biomarkers for different neuropathoglogical conditions is becoming highly prevalent. In this paper, we consider the problem of Autism Spectrum Disorder (ASD) classification where…

机器学习 · 统计学 2018-10-31 Rushil Anirudh , Jayaraman J. Thiagarajan