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Message passing neural networks have recently evolved into a state-of-the-art approach to representation learning on graphs. Existing methods perform synchronous message passing along all edges in multiple subsequent rounds and consequently…

机器学习 · 计算机科学 2020-12-21 Julian Busch , Jiaxing Pi , Thomas Seidl

Existing graph neural networks typically rely on heuristic choices for hidden dimensions and propagation depths, which often lead to severe information loss during propagation, known as over-squashing. To address this issue, we propose…

机器学习 · 计算机科学 2026-04-14 Zinuo You , Jin Zheng , John Cartlidge

Graph neural networks (GNNs) have received tremendous attention due to their superiority in learning node representations. These models rely on message passing and feature transformation functions to encode the structural and feature…

机器学习 · 计算机科学 2021-12-02 Kai Guo , Kaixiong Zhou , Xia Hu , Yu Li , Yi Chang , Xin Wang

Reconfigurable electromagnetic structures (REMSs), such as reconfigurable reflectarrays (RRAs) or reconfigurable intelligent surfaces (RISs), hold significant potential to improve the spectral efficiency of wireless communication systems…

信号处理 · 电气工程与系统科学 2025-12-16 Alexander Stutz-Tirri , Georg Schwan , Christoph Studer

We consider the problem of optimally allocating resources across a set of transmitters and receivers in a wireless network. The resulting optimization problem takes the form of constrained statistical learning, in which solutions can be…

信号处理 · 电气工程与系统科学 2020-07-15 Mark Eisen , Alejandro Ribeiro

Studies continually find that message-passing graph convolutional networks suffer from the over-smoothing issue. Basically, the issue of over-smoothing refers to the phenomenon that the learned embeddings for all nodes can become very…

机器学习 · 计算机科学 2024-04-16 Haimin Zhang , Min Xu

Community detection in attributed networks faces a fundamental divide: topological algorithms ignore semantic features, while Graph Neural Networks (GNNs) encounter devastating computational bottlenecks. Specifically, GNNs suffer from a…

机器学习 · 计算机科学 2026-02-27 Emilio Ferrara

Subgraph GNNs enhance message-passing GNNs expressivity by representing graphs as sets of subgraphs, demonstrating impressive performance across various tasks. However, their scalability is hindered by the need to process large numbers of…

机器学习 · 计算机科学 2025-06-02 Guy Bar-Shalom , Yam Eitan , Fabrizio Frasca , Haggai Maron

Graph neural networks (GNNs) have attracted significant attention for their outstanding performance in graph learning and node classification tasks. However, their vulnerability to adversarial attacks, particularly through susceptible…

机器学习 · 计算机科学 2024-11-19 Sepideh Neshatfar , Salimeh Yasaei Sekeh

Graph Nerual Networks (GNNs) are effective models in graph embedding. It extracts shallow features and neighborhood information by aggregating neighbor information to learn the embedding representation of different nodes. However, the local…

社会与信息网络 · 计算机科学 2023-12-14 Kejia Zhang

The ubiquitous deployment of deep learning systems on resource-constrained Edge devices is hindered by their high computational complexity coupled with their fragility to out-of-distribution (OOD) data, especially to naturally occurring…

机器学习 · 计算机科学 2024-10-11 Vignesh Sundaresha , Naresh Shanbhag

Graph Neural Network (GNN) research has produced strategies to modify a graph's edges using gradients from a trained GNN, with the goal of network design. However, the factors which govern gradient-based editing are understudied, obscuring…

机器学习 · 计算机科学 2023-10-27 Donald Loveland , Rajmonda Caceres

Graph convolutional networks (GCNs) are vulnerable to perturbations of the graph structure that are either random, or, adversarially designed. The perturbed links modify the graph neighborhoods, which critically affects the performance of…

机器学习 · 计算机科学 2019-10-23 Vassilis N. Ioannidis , Georgios B. Giannakis

Graph Neural Networks (GNNs) have demonstrated significant success in learning from graph-structured data across various domains. Despite their great successful, one critical challenge is often overlooked by existing works, i.e., the…

机器学习 · 计算机科学 2024-02-15 Tianxiang Zhao , Xiang Zhang , Suhang Wang

Detecting stealthy malicious communications from flow logs under benign-only training remains a critical challenge in network security. Malicious communications often camouflage as normal traffic like standard HTTPS flows. Conventional…

密码学与安全 · 计算机科学 2026-05-11 Henghui Xu , Yuchen Zhang , Xiaobo Ma

The increasing penetration of renewable energy sources introduces significant variability and uncertainty in modern power systems, making accurate state prediction critical for reliable grid operation. Conventional forecasting methods often…

机器学习 · 计算机科学 2025-04-01 Dhruv Suri , Mohak Mangal

Graph Neural Networks (GNNs) have demonstrated strong representation learning capabilities for graph-based tasks. Recent advances on GNNs leverage geometric properties, such as curvature, to enhance its representation capabilities by…

机器学习 · 计算机科学 2025-03-04 Asela Hevapathige , Ahad N. Zehmakan , Qing Wang

Optimal dispatch of energy storage systems (ESSs) in distribution networks involves jointly improving operating economy and voltage security under time-varying conditions and possible topology changes. To support fast online decision…

机器学习 · 计算机科学 2026-03-30 Shuyi Gao , Stavros Orfanoudakis , Shengren Hou , Peter Palensky , Pedro P. Vergara

Graph neural networks (GNNs) are known to be vulnerable to oversmoothing due to their implicit homophily assumption. We mitigate this problem with a novel scheme that regulates the aggregation of messages, modulating the type and extent of…

机器学习 · 计算机科学 2025-12-03 Haishan Wang , Arno Solin , Vikas Garg

Graph neural networks operate on graph-structured data via exchanging messages along edges. One limitation of this message passing paradigm is the over-squashing problem. Over-squashing occurs when messages from a node's expanded receptive…

机器学习 · 计算机科学 2023-11-15 Thomas Christie , Yu He