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End-to-end training with global optimization have popularized graph neural networks (GNNs) for node classification, yet inadvertently introduced vulnerabilities to adversarial edge-perturbing attacks. Adversaries can exploit the inherent…

Machine Learning · Computer Science 2024-12-12 Ao Liu , Wenshan Li , Tao Li , Beibei Li , Guangquan Xu , Pan Zhou , Wengang Ma , Hanyuan Huang

Text-attributed graphs (TAGs), which combine structural and textual node information, are ubiquitous across many domains. Recent work integrates Large Language Models (LLMs) with Graph Neural Networks (GNNs) to jointly model semantics and…

Cryptography and Security · Computer Science 2025-11-18 Jiaji Ma , Puja Trivedi , Danai Koutra

Graph neural networks (GNNs) have become instrumental in diverse real-world applications, offering powerful graph learning capabilities for tasks such as social networks and medical data analysis. Despite their successes, GNNs are…

Machine Learning · Computer Science 2024-06-13 Peizhi Niu , Chao Pan , Siheng Chen , Olgica Milenkovic

Detecting vulnerabilities in source code is a critical task for software security assurance. Graph Neural Network (GNN) machine learning can be a promising approach by modeling source code as graphs. Early approaches treated code elements…

Cryptography and Security · Computer Science 2025-02-25 Yu Luo , Weifeng Xu , Dianxiang Xu

Domain generalization on graphs aims to develop models with robust generalization capabilities, ensuring effective performance on the testing set despite disparities between testing and training distributions. However, existing methods…

Machine Learning · Computer Science 2024-11-21 Qin Tian , Chen Zhao , Minglai Shao , Wenjun Wang , Yujie Lin , Dong Li

Graph Neural Networks (GNNs) have emerged as powerful tools for learning over structured data, including text-attributed graphs (TAGs), which are common in domains such as citation networks, social platforms, and knowledge graphs. GNNs are…

Machine Learning · Computer Science 2026-04-23 Peyman Baghershahi , Gregoire Fournier , Pranav Nyati , Sourav Medya

Graph Neural Networks (GNNs), specifically designed to process the graph data, have achieved remarkable success in various applications. Link stealing attacks on graph data pose a significant privacy threat, as attackers aim to extract…

Cryptography and Security · Computer Science 2024-12-10 Faqian Guan , Tianqing Zhu , Wenhan Chang , Wei Ren , Wanlei Zhou

Code Language Models (codeLMs) and Graph Neural Networks (GNNs) are widely used in code vulnerability detection. However, GNNs often rely on aggregating information from adjacent nodes, limiting structural information propagation across…

Cryptography and Security · Computer Science 2025-03-24 Ruitong Liu , Yanbin Wang , Haitao Xu , Jianguo Sun , Fan Zhang , Peiyue Li , Zhenhao Guo

Large scale pretrained models have revolutionized Natural Language Processing (NLP) and Computer Vision (CV), showcasing remarkable cross domain generalization abilities. However, in graph learning, models are typically trained on…

Computation and Language · Computer Science 2025-10-03 Ruyue Liu , Rong Yin , Xiangzhen Bo , Xiaoshuai Hao , Yong Liu , Jinwen Zhong , Can Ma , Weiping Wang

Graph Retrieval-Augmented Generation (GRAG or Graph RAG) architectures aim to enhance language understanding and generation by leveraging external knowledge. However, effectively capturing and integrating the rich semantic information…

Computation and Language · Computer Science 2025-01-29 Karishma Thakrar

The natural combination of intricate topological structures and rich textual information in text-attributed graphs (TAGs) opens up a novel perspective for graph anomaly detection (GAD). However, existing GAD methods primarily focus on…

Machine Learning · Computer Science 2025-08-04 Yiming Xu , Jiarun Chen , Zhen Peng , Zihan Chen , Qika Lin , Lan Ma , Bin Shi , Bo Dong

Representation learning on text-attributed graphs (TAGs) has become a critical research problem in recent years. A typical example of a TAG is a paper citation graph, where the text of each paper serves as node attributes. Initial graph…

Machine Learning · Computer Science 2024-03-08 Xiaoxin He , Xavier Bresson , Thomas Laurent , Adam Perold , Yann LeCun , Bryan Hooi

Hypergraph Neural Networks (HGNNs) have been successfully applied in various hypergraph-related tasks due to their excellent higher-order representation capabilities. Recent works have shown that deep learning models are vulnerable to…

Machine Learning · Computer Science 2023-10-25 Yang Chen , Stjepan Picek , Zhonglin Ye , Zhaoyang Wang , Haixing Zhao

Large Language Models (LLMs) have achieved remarkable success in natural language processing through strong semantic understanding and generation. However, their black-box nature limits structured and multi-hop reasoning. In contrast,…

Computation and Language · Computer Science 2025-10-27 Guangxin Su , Hanchen Wang , Jianwei Wang , Wenjie Zhang , Ying Zhang , Jian Pei

Recent studies show that Graph Neural Networks(GNNs) are vulnerable and easily fooled by small perturbations, which has raised considerable concerns for adapting GNNs in various safety-critical applications. In this work, we focus on the…

Machine Learning · Computer Science 2022-11-16 Zhihao Zhu , Chenwang Wu , Min Zhou , Hao Liao , Defu Lian , Enhong Chen

Cyber Threat Intelligence (CTI) parsing aims to extract key threat information from massive data, transform it into actionable intelligence, enhance threat detection and defense efficiency, including attack graph construction, intelligence…

Cryptography and Security · Computer Science 2025-06-23 Yongheng Zhang , Xinyun Zhao , Yunshan Ma , Haokai Ma , Yingxiao Guan , Guozheng Yang , Yuliang Lu , Xiang Wang

Graph Neural Networks (GNNs) have achieved promising performance in various real-world applications. However, recent studies have shown that GNNs are vulnerable to adversarial attacks. In this paper, we study a recently-introduced realistic…

Machine Learning · Computer Science 2021-11-10 Xu Zou , Qinkai Zheng , Yuxiao Dong , Xinyu Guan , Evgeny Kharlamov , Jialiang Lu , Jie Tang

Text-Attributed Graphs (TAGs), where each node is associated with text descriptions, are ubiquitous in real-world scenarios. They typically exhibit distinctive structure and domain-specific knowledge, motivating the development of a Graph…

Machine Learning · Computer Science 2025-10-21 Xi Zhu , Haochen Xue , Ziwei Zhao , Wujiang Xu , Jingyuan Huang , Minghao Guo , Qifan Wang , Kaixiong Zhou , Imran Razzak , Yongfeng Zhang

Large Language Models (LLMs) are swiftly advancing in architecture and capability, and as they integrate more deeply into complex systems, the urgency to scrutinize their security properties grows. This paper surveys research in the…

Computation and Language · Computer Science 2023-10-18 Erfan Shayegani , Md Abdullah Al Mamun , Yu Fu , Pedram Zaree , Yue Dong , Nael Abu-Ghazaleh

Graphs are ubiquitous structures found in numerous real-world applications, such as drug discovery, recommender systems, and social network analysis. To model graph-structured data, graph neural networks (GNNs) have become a popular tool.…

Computation and Language · Computer Science 2025-02-10 Zehong Wang , Sidney Liu , Zheyuan Zhang , Tianyi Ma , Chuxu Zhang , Yanfang Ye