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Spectral graph neural networks learn graph filters, but their behavior with increasing depth and polynomial order is not well understood. We analyze these models in the graph Fourier domain, where each layer becomes an element-wise…

This paper aims to provide a novel design of a multiscale framelet convolution for spectral graph neural networks (GNNs). While current spectral methods excel in various graph learning tasks, they often lack the flexibility to adapt to…

机器学习 · 计算机科学 2024-07-30 Mengxi Yang , Dai Shi , Xuebin Zheng , Jie Yin , Junbin Gao

Graph convolutional networks(GCNs) have become the most popular approaches for graph data in these days because of their powerful ability to extract features from graph. GCNs approaches are divided into two categories, spectral-based and…

机器学习 · 计算机科学 2019-07-23 Yi Ma , Jianye Hao , Yaodong Yang , Han Li , Junqi Jin , Guangyong Chen

In neural networks, continual learning results in gradient interference among sequential tasks, leading to catastrophic forgetting of old tasks while learning new ones. This issue is addressed in recent methods by storing the important…

机器学习 · 计算机科学 2023-02-06 Gobinda Saha , Kaushik Roy

-Background. Network neuroscience examines the brain as a complex system represented by a network (or connectome), providing deeper insights into the brain morphology and function, allowing the identification of atypical brain connectivity…

神经元与认知 · 定量生物学 2020-09-01 Mert Lostar , Islem Rekik

Graph Neural Networks (GNNs) play a pivotal role in graph-based tasks for their proficiency in representation learning. Among the various GNN methods, spectral GNNs employing polynomial filters have shown promising performance on tasks…

机器学习 · 计算机科学 2025-01-09 Haipeng Ding , Zhewei Wei , Yuhang Ye

X-ray Photoelectron Spectroscopy (XPS) is a crucial technique for material surface analysis, yet interpreting its spectra is often challenging for both human analysts and automated methods due to the prevalence of variable spectral shifts…

材料科学 · 物理学 2026-03-06 Issa Saddiq , Yuxin Fan , Robert G. Palgrave , Mark A. Isaacs , David Morgan , Keith T. Butler

We present a method to segment MRI scans of the human brain into ischemic stroke lesion and normal tissues. We propose a neural network architecture in the form of a standard encoder-decoder where predictions are guided by a spatial…

图像与视频处理 · 电气工程与系统科学 2021-09-21 Alex Wong , Allison Chen , Yangchao Wu , Safa Cicek , Alexandre Tiard , Byung-Woo Hong , Stefano Soatto

Inferring gene regulatory networks (GRNs) from single-cell RNA sequencing (scRNA-seq) data is a complex challenge that requires capturing the intricate relationships between genes and their regulatory interactions. In this study, we tackle…

机器学习 · 计算机科学 2024-07-26 Sindhura Kommu , Yizhi Wang , Yue Wang , Xuan Wang

Previous researches of sketches often considered sketches in pixel format and leveraged CNN based models in the sketch understanding. Fundamentally, a sketch is stored as a sequence of data points, a vector format representation, rather…

计算机视觉与模式识别 · 计算机科学 2020-05-20 Hangyu Lin , Yanwei Fu , Yu-Gang Jiang , Xiangyang Xue

Scene Graph Generation, which generally follows a regular encoder-decoder pipeline, aims to first encode the visual contents within the given image and then parse them into a compact summary graph. Existing SGG approaches generally not only…

计算机视觉与模式识别 · 计算机科学 2022-04-05 Xingning Dong , Tian Gan , Xuemeng Song , Jianlong Wu , Yuan Cheng , Liqiang Nie

Sleep stage classification is essential for sleep assessment and disease diagnosis. Although previous attempts to classify sleep stages have achieved high classification performance, several challenges remain open: 1) How to effectively…

信号处理 · 电气工程与系统科学 2021-09-07 Ziyu Jia , Youfang Lin , Jing Wang , Xiaojun Ning , Yuanlai He , Ronghao Zhou , Yuhan Zhou , Li-wei H. Lehman

In applications such as social, energy, transportation, sensor, and neuronal networks, high-dimensional data naturally reside on the vertices of weighted graphs. The emerging field of signal processing on graphs merges algebraic and…

离散数学 · 计算机科学 2015-06-12 David I Shuman , Sunil K. Narang , Pascal Frossard , Antonio Ortega , Pierre Vandergheynst

Transformer-based models have recently shown success in representation learning on graph-structured data beyond natural language processing and computer vision. However, the success is limited to small-scale graphs due to the drawbacks of…

机器学习 · 计算机科学 2022-10-05 Jinyoung Park , Seongjun Yun , Hyeonjin Park , Jaewoo Kang , Jisu Jeong , Kyung-Min Kim , Jung-woo Ha , Hyunwoo J. Kim

In skeleton-based action recognition, graph convolutional networks (GCNs), which model the human body skeletons as spatiotemporal graphs, have achieved remarkable performance. However, in existing GCN-based methods, the topology of the…

计算机视觉与模式识别 · 计算机科学 2019-07-11 Lei Shi , Yifan Zhang , Jian Cheng , Hanqing Lu

In Graph Signal Processing (GSP), data dependencies are represented by a graph whose nodes label the data and the edges capture dependencies among nodes. The graph is represented by a weighted adjacency matrix $A$ that, in GSP, generalizes…

信号处理 · 电气工程与系统科学 2020-12-02 João Domingos , José M. F. Moura

The correlation matrix is a central representation of functional brain networks in neuroimaging. Traditional analyses often treat pairwise interactions independently in a Euclidean setting, overlooking the intrinsic geometry of correlation…

机器学习 · 统计学 2025-04-10 Kisung You , Yelim Lee , Hae-Jeong Park

Motion artifacts caused by prolonged acquisition time are a significant challenge in Magnetic Resonance Imaging (MRI), hindering accurate tissue segmentation. These artifacts appear as blurred images that mimic tissue-like appearances,…

图像与视频处理 · 电气工程与系统科学 2024-12-06 Sunyoung Jung , Yoonseok Choi , Mohammed A. Al-masni , Minyoung Jung , Dong-Hyun Kim

Feature learning on point clouds has shown great promise, with the introduction of effective and generalizable deep learning frameworks such as pointnet++. Thus far, however, point features have been abstracted in an independent and…

计算机视觉与模式识别 · 计算机科学 2018-03-16 Chu Wang , Babak Samari , Kaleem Siddiqi

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…

机器学习 · 计算机科学 2019-04-23 Rami Al-Rfou , Dustin Zelle , Bryan Perozzi