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Benefiting from the injection of human prior knowledge, graphs, as derived discrete data, are semantically dense so that models can efficiently learn the semantic information from such data. Accordingly, graph neural networks (GNNs) indeed…

机器学习 · 计算机科学 2023-05-25 Hang Gao , Jiangmeng Li , Wenwen Qiang , Lingyu Si , Xingzhe Su , Fengge Wu , Changwen Zheng , Fuchun Sun

This study analyzes Graph Neural Networks (GNNs) for distribution system state estimation (DSSE) by employing an interpretable Graph Neural Additive Network (GNAN) and by utilizing an edge-conditioned message-passing mechanism. The…

系统与控制 · 电气工程与系统科学 2026-03-25 Arbel Yaniv , Kilian Golinski , Christoph Goebel

Graphs can represent relational information among entities and graph structures are widely used in many intelligent tasks such as search, recommendation, and question answering. However, most of the graph-structured data in practice suffers…

信息检索 · 计算机科学 2021-12-30 Hanxiong Chen , Yunqi Li , Shaoyun Shi , Shuchang Liu , He Zhu , Yongfeng Zhang

Graph Neural Networks (GNNs) learn from graph-structured data by passing local messages between neighboring nodes along edges on certain topological layouts. Typically, these topological layouts in modern GNNs are deterministically computed…

机器学习 · 计算机科学 2024-02-27 Xinjian Zhao , Chaolong Ying , Tianshu Yu

Graph convolutional neural networks have recently shown great potential for the task of zero-shot learning. These models are highly sample efficient as related concepts in the graph structure share statistical strength allowing…

计算机视觉与模式识别 · 计算机科学 2019-03-28 Michael Kampffmeyer , Yinbo Chen , Xiaodan Liang , Hao Wang , Yujia Zhang , Eric P. Xing

Graph Neural Networks (GNNs) have attracted tremendous attention by demonstrating their capability to handle graph data. However, they are difficult to be deployed in resource-limited devices due to model sizes and scalability constraints…

机器学习 · 计算机科学 2023-02-02 Yijun Tian , Shichao Pei , Xiangliang Zhang , Chuxu Zhang , Nitesh V. Chawla

Large language models (LLMs) have demonstrated impressive reasoning abilities in complex tasks. However, they lack up-to-date knowledge and experience hallucinations during reasoning, which can lead to incorrect reasoning processes and…

计算与语言 · 计算机科学 2024-02-27 Linhao Luo , Yuan-Fang Li , Gholamreza Haffari , Shirui Pan

Graph-based anomaly detection is pivotal in diverse security applications, such as fraud detection in transaction networks and intrusion detection for network traffic. Standard approaches, including Graph Neural Networks (GNNs), often…

密码学与安全 · 计算机科学 2024-10-14 Andy Zhou , Xiaojun Xu , Ramesh Raghunathan , Alok Lal , Xinze Guan , Bin Yu , Bo Li

Graph neural networks (GNNs) have been demonstrated to be a powerful algorithmic model in broad application fields for their effectiveness in learning over graphs. To scale GNN training up for large-scale and ever-growing graphs, the most…

分布式、并行与集群计算 · 计算机科学 2023-11-30 Haiyang Lin , Mingyu Yan , Xiaochun Ye , Dongrui Fan , Shirui Pan , Wenguang Chen , Yuan Xie

We present a novel graph neural network (GNN) architecture for retrieval-augmented generation (RAG) that leverages query-aware attention mechanisms and learned scoring heads to improve retrieval accuracy on complex, multi-hop questions.…

信息检索 · 计算机科学 2025-08-11 Vibhor Agrawal , Fay Wang , Rishi Puri

Reasoning on large-scale knowledge graphs has been long dominated by embedding methods. While path-based methods possess the inductive capacity that embeddings lack, their scalability is limited by the exponential number of paths. Here we…

人工智能 · 计算机科学 2023-11-10 Zhaocheng Zhu , Xinyu Yuan , Mikhail Galkin , Sophie Xhonneux , Ming Zhang , Maxime Gazeau , Jian Tang

Incorporating knowledge graph into recommender systems has attracted increasing attention in recent years. By exploring the interlinks within a knowledge graph, the connectivity between users and items can be discovered as paths, which…

信息检索 · 计算机科学 2018-11-13 Xiang Wang , Dingxian Wang , Canran Xu , Xiangnan He , Yixin Cao , Tat-Seng Chua

Graph Neural Networks (GNNs) are popular for graph machine learning and have shown great results on wide node classification tasks. Yet, they are less popular for practical deployments in the industry owing to their scalability challenges…

机器学习 · 计算机科学 2022-03-24 Shichang Zhang , Yozen Liu , Yizhou Sun , Neil Shah

Large Language Models (LLMs) have shown remarkable reasoning capabilities on complex tasks, but they still suffer from out-of-date knowledge, hallucinations, and opaque decision-making. In contrast, Knowledge Graphs (KGs) can provide…

人工智能 · 计算机科学 2024-11-01 Liyi Chen , Panrong Tong , Zhongming Jin , Ying Sun , Jieping Ye , Hui Xiong

Graph Neural Networks (GNNs) have received increasing attention for representation learning in various machine learning tasks. However, most existing GNNs applying neighborhood aggregation usually perform poorly on the graph with…

机器学习 · 计算机科学 2024-10-29 Wei Zhuo , Guang Tan

Graph neural networks (GNNs) model nonlinear representations in graph data with applications in distributed agent coordination, control, and planning among others. Current GNN architectures assume ideal scenarios and ignore link…

信号处理 · 电气工程与系统科学 2021-09-01 Zhan Gao , Elvin Isufi , Alejandro Ribeiro

Graph Neural Networks (GNNs) are powerful tools in representation learning for graphs. However, recent studies show that GNNs are vulnerable to carefully-crafted perturbations, called adversarial attacks. Adversarial attacks can easily fool…

机器学习 · 计算机科学 2020-06-30 Wei Jin , Yao Ma , Xiaorui Liu , Xianfeng Tang , Suhang Wang , Jiliang Tang

Path-based relational reasoning over knowledge graphs has become increasingly popular due to a variety of downstream applications such as question answering in dialogue systems, fact prediction, and recommender systems. In recent years,…

机器学习 · 计算机科学 2020-03-16 Mandana Saebi , Steven Krieg , Chuxu Zhang , Meng Jiang , Nitesh Chawla

Graph neural networks (GNNs), which propagate the node features through the edges and learn how to transform the aggregated features under label supervision, have achieved great success in supervised feature extraction for both node-level…

机器学习 · 统计学 2022-11-01 Yilin He , Chaojie Wang , Hao Zhang , Bo Chen , Mingyuan Zhou

Graph neural networks (GNNs) have been widely used in representation learning on graphs and achieved state-of-the-art performance in tasks such as node classification and link prediction. However, most existing GNNs are designed to learn…

机器学习 · 计算机科学 2020-02-06 Seongjun Yun , Minbyul Jeong , Raehyun Kim , Jaewoo Kang , Hyunwoo J. Kim