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Graph representation learning has attracted a surge of interest recently, whose target at learning discriminant embedding for each node in the graph. Most of these representation methods focus on supervised learning and heavily depend on…

Machine Learning · Computer Science 2021-07-07 Pengpeng Shao , Tong Liu , Dawei Zhang , Jianhua Tao , Feihu Che , Guohua Yang

Real-world heterogeneous graphs are inherently noisy and usually not in the optimal graph structures for downstream tasks, which often adversely affects the performance of GRL models in downstream tasks. Although Graph Structure Learning…

Machine Learning · Computer Science 2026-04-08 He Zhao , Zhiwei Zeng , Yongwei Wang , Chunyan Miao

In recent years, graph neural networks (GNNs) have emerged as a successful tool in a variety of graph-related applications. However, the performance of GNNs can be deteriorated when noisy connections occur in the original graph structures;…

Machine Learning · Computer Science 2022-01-19 Yixin Liu , Yu Zheng , Daokun Zhang , Hongxu Chen , Hao Peng , Shirui Pan

Graph Neural Networks (GNNs) have become a prominent approach for learning from graph-structured data. However, their effectiveness can be significantly compromised when the graph structure is suboptimal. To address this issue, Graph…

Machine Learning · Computer Science 2025-02-20 Shen Han , Zhiyao Zhou , Jiawei Chen , Zhezheng Hao , Sheng Zhou , Gang Wang , Yan Feng , Chun Chen , Can Wang

Publishing open graph data while preserving individual privacy remains challenging when data publishers and data users are distinct entities. Although differential privacy (DP) provides rigorous guarantees, most existing approaches enforce…

Machine Learning · Computer Science 2026-03-25 Muhao Guo , Jiaqi Wu , Yizheng Liao , Wenke Lee , Shengzhe Chen , Yang Weng

Graph Representation Learning (GRL) is a fundamental task in machine learning, aiming to encode high-dimensional graph-structured data into low-dimensional vectors. Self-Supervised Learning (SSL) methods are widely used in GRL because they…

Machine Learning · Computer Science 2025-06-13 Shifeng Xie , Aref Einizade , Jhony H. Giraldo

Molecular property prediction (MPP) is a fundamental but challenging task in the computer-aided drug discovery process. More and more recent works employ different graph-based models for MPP, which have made considerable progress in…

Machine Learning · Computer Science 2023-12-29 Bangyi Zhao , Weixia Xu , Jihong Guan , Shuigeng Zhou

Graph-based retrieval-augmented generation (Graph RAG) is increasingly deployed to support LLM applications by augmenting user queries with structured knowledge retrieved from a knowledge graph. While Graph RAG improves relational…

Cryptography and Security · Computer Science 2026-02-09 Minkyoo Song , Jaehan Kim , Myungchul Kang , Hanna Kim , Seungwon Shin , Sooel Son

In this paper, we propose a novel generative model-based attack on learnable image encryption methods proposed for privacy-preserving deep learning. Various learnable encryption methods have been studied to protect the sensitive visual…

Computer Vision and Pattern Recognition · Computer Science 2023-03-10 AprilPyone MaungMaung , Hitoshi Kiya

Graph self-supervised learning (SSL) holds considerable promise for mining and learning with graph-structured data. Yet, a significant challenge in graph SSL lies in the feature discrepancy among graphs across different domains. In this…

Machine Learning · Computer Science 2024-06-06 Zhenyu Hou , Haozhan Li , Yukuo Cen , Jie Tang , Yuxiao Dong

Communication cost and privacy are two major considerations in federated learning (FL). For communication cost, gradient compression by sketching the clients' transmitted model updates is often used for reducing per-round communication. For…

Machine Learning · Computer Science 2025-09-11 Qiaobo Li , Zhijie Chen , Arindam Banerjee

Most Graph Neural Networks follow the message-passing paradigm, assuming the observed structure depicts the ground-truth node relationships. However, this fundamental assumption cannot always be satisfied, as real-world graphs are always…

Machine Learning · Computer Science 2023-01-03 Qingyun Sun , Jianxin Li , Beining Yang , Xingcheng Fu , Hao Peng , Philip S. Yu

Federated Learning (FL) facilitates collaborative model training while prioritizing privacy by avoiding direct data sharing. However, most existing articles attempt to address challenges within the model's internal parameters and…

Machine Learning · Computer Science 2025-01-10 Guannan Lai , Yihui Feng , Xin Yang , Xiaoyu Deng , Hao Yu , Shuyin Xia , Guoyin Wang , Tianrui Li

Personalized Federated Graph Learning (pFGL) facilitates the decentralized training of Graph Neural Networks (GNNs) without compromising privacy while accommodating personalized requirements for non-IID participants. In cross-domain…

Machine Learning · Computer Science 2024-10-29 Zihan Tan , Guancheng Wan , Wenke Huang , Mang Ye

Federated Graph Neural Networks (FedGNNs) facilitate collaborative learning across multiple clients with graph-structured data while preserving user privacy. However, emerging research indicates that within this setting, shared model…

Machine Learning · Computer Science 2026-05-08 Suprim Nakarmi , Junggab Son , Yue Zhao , Zuobin Xiong

Graph neural networks (GNNs) are susceptible to privacy inference attacks (PIAs), given their ability to learn joint representation from features and edges among nodes in graph data. To prevent privacy leakages in GNNs, we propose a novel…

Machine Learning · Computer Science 2022-11-11 Khang Tran , Phung Lai , NhatHai Phan , Issa Khalil , Yao Ma , Abdallah Khreishah , My Thai , Xintao Wu

Previous security research efforts orbiting around graphs have been exclusively focusing on either (de-)anonymizing the graphs or understanding the security and privacy issues of graph neural networks. Little attention has been paid to…

Machine Learning · Computer Science 2022-05-02 Yun Shen , Yufei Han , Zhikun Zhang , Min Chen , Ting Yu , Michael Backes , Yang Zhang , Gianluca Stringhini

While the advent of Graph Neural Networks (GNNs) has greatly improved node and graph representation learning in many applications, the neighborhood aggregation scheme exposes additional vulnerabilities to adversaries seeking to extract…

Machine Learning · Computer Science 2021-06-15 Peiyuan Liao , Han Zhao , Keyulu Xu , Tommi Jaakkola , Geoffrey Gordon , Stefanie Jegelka , Ruslan Salakhutdinov

Heterogeneous graph neural network (HGNN) is a very popular technique for the modeling and analysis of heterogeneous graphs. Most existing HGNN-based approaches are supervised or semi-supervised learning methods requiring graphs to be…

Machine Learning · Computer Science 2023-11-17 Cuiying Huo , Dongxiao He , Yawen Li , Di Jin , Jianwu Dang , Weixiong Zhang , Witold Pedrycz , Lingfei Wu

Self-supervised learning (SSL) has emerged as a powerful paradigm for learning representations on graph data without requiring manual labels. However, leading SSL methods like GRACE are fundamentally incompatible with privacy-preserving…

Machine Learning · Computer Science 2025-10-01 Daksh Pandey