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Graph neural networks (GNNs) are vulnerable to adversarial attacks, especially for topology perturbations, and many methods that improve the robustness of GNNs have received considerable attention. Recently, we have witnessed the…

Machine Learning · Computer Science 2024-12-25 Zhongjian Zhang , Xiao Wang , Huichi Zhou , Yue Yu , Mengmei Zhang , Cheng Yang , Chuan Shi

Graph neural network (GNN), the mainstream method to learn on graph data, is vulnerable to graph evasion attacks, where an attacker slightly perturbing the graph structure can fool trained GNN models. Existing work has at least one of the…

Cryptography and Security · Computer Science 2023-12-19 Binghui Wang , Tianxiang Zhou , Minhua Lin , Pan Zhou , Ang Li , Meng Pang , Hai Li , Yiran Chen

Link prediction in dynamic graphs (LPDG) is an important research problem that has diverse applications such as online recommendations, studies on disease contagion, organizational studies, etc. Various LPDG methods based on graph embedding…

Cryptography and Security · Computer Science 2020-09-15 Houxiang Fan , Binghui Wang , Pan Zhou , Ang Li , Meng Pang , Zichuan Xu , Cai Fu , Hai Li , Yiran Chen

The state-of-the-art coding schemes for topological interference management (TIM) problems are usually handcrafted for specific families of network topologies, relying critically on experts' domain knowledge. This inevitably restricts the…

Information Theory · Computer Science 2023-05-15 Zhiwei Shan , Xinping Yi , Han Yu , Chung-Shou Liao , Shi Jin

Graphs are an essential data structure utilized to represent relationships in real-world scenarios. Prior research has established that Graph Neural Networks (GNNs) deliver impressive outcomes in graph-centric tasks, such as link prediction…

Machine Learning · Computer Science 2024-09-12 Xubin Ren , Jiabin Tang , Dawei Yin , Nitesh Chawla , Chao Huang

Recently, the emergence of large language models (LLMs) has motivated integrating language descriptions into graphs, forming text-attributed graphs (TAGs) that enhance model encoding capabilities from a data-centric perspective. A review of…

Machine Learning · Computer Science 2026-02-03 Zhihan Zhang , Xunkai Li , Lei Zhu , Guang Zeng , Bowen Fan , Yanzhe Wen , Hongchao Qin , Rong-Hua Li , Guoren Wang

Anomaly detection on text-rich graphs is widely prevalent in real life, such as detecting incorrectly assigned academic papers to authors and detecting bots in social networks. The remarkable capabilities of large language models (LLMs)…

Computation and Language · Computer Science 2025-08-08 Yunhe Pang , Bo Chen , Fanjin Zhang , Yanghui Rao , Evgeny Kharlamov , Jie Tang

Temporal Graph Neural Networks (TGNNs) have become indispensable for analyzing dynamic graphs in critical applications such as social networks, communication systems, and financial networks. However, the robustness of TGNNs against…

Machine Learning · Computer Science 2025-10-01 Dong Hyun Jeon , Lijing Zhu , Haifang Li , Pengze Li , Jingna Feng , Tiehang Duan , Houbing Herbert Song , Cui Tao , Shuteng Niu

Graph-structured data is prevalent in the real world. Recently, due to the powerful emergent capabilities, Large Language Models (LLMs) have shown promising performance in modeling graphs. The key to effectively applying LLMs on graphs is…

Computation and Language · Computer Science 2024-10-16 Haitong Luo , Xuying Meng , Suhang Wang , Tianxiang Zhao , Fali Wang , Hanyun Cao , Yujun Zhang

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

Foundation models like ChatGPT and GPT-4 have revolutionized artificial intelligence, exhibiting remarkable abilities to generalize across a wide array of tasks and applications beyond their initial training objectives. However, graph…

Machine Learning · Computer Science 2025-01-22 Yufei He , Yuan Sui , Xiaoxin He , Bryan Hooi

Link prediction in dynamic graphs (LPDG) has been widely applied to real-world applications such as website recommendation, traffic flow prediction, organizational studies, etc. These models are usually kept local and secure, with only the…

Cryptography and Security · Computer Science 2024-12-18 Jiate Li , Meng Pang , Binghui Wang

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

The advance of topological interference management (TIM) has been one of the driving forces of recent developments in network information theory. However, state-of-the-art coding schemes for TIM are usually handcrafted for specific families…

Information Theory · Computer Science 2025-02-14 Zhiwei Shan , Xinping Yi , Han Yu , Chung-Shou Liao , Shi Jin

Recent research on integrating Large Language Models (LLMs) with Graph Neural Networks (GNNs) typically follows two approaches: LLM-centered models, which convert graph data into tokens for LLM processing, and GNN-centered models, which use…

Machine Learning · Computer Science 2024-12-11 Haotong Yang , Xiyuan Wang , Qian Tao , Shuxian Hu , Zhouchen Lin , Muhan Zhang

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

Graph Neural Networks (GNNs) have gained traction in Graph-based Machine Learning as a Service (GMLaaS) platforms, yet they remain vulnerable to graph-based model extraction attacks (MEAs), where adversaries reconstruct surrogate models by…

Machine Learning · Computer Science 2025-03-24 Zhan Cheng , Bolin Shen , Tianming Sha , Yuan Gao , Shibo Li , Yushun Dong

Large Language Models (LLMs) increasingly rely on agentic capabilities-iterative retrieval, tool use, and decision-making-to overcome the limits of static, parametric knowledge. Yet existing agentic frameworks treat external information as…

Computation and Language · Computer Science 2026-04-24 Yuanfu Sun , Kang Li , Dongzhe Fan , Jiajin Liu , Qiaoyu Tan

Large language models ($\textbf{LLMs}$) have emerged as a powerful method for discovery. Instead of utilizing numerical data, LLMs utilize associated variable $\textit{semantic metadata}$ to predict variable relationships. Simultaneously,…

Machine Learning · Computer Science 2025-04-15 Alex Havrilla , David Alvarez-Melis , Nicolo Fusi

Graph Neural Networks (GNNs) have achieved state-of-the-art performance in various graph structure related tasks such as node classification and graph classification. However, GNNs are vulnerable to adversarial attacks. Existing works…

Machine Learning · Computer Science 2021-09-28 Jiaming Mu , Binghui Wang , Qi Li , Kun Sun , Mingwei Xu , Zhuotao Liu