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Graph neural networks (GNNs) have achieved impressive performance when testing and training graph data come from identical distribution. However, existing GNNs lack out-of-distribution generalization abilities so that their performance…

机器学习 · 计算机科学 2021-12-15 Haoyang Li , Xin Wang , Ziwei Zhang , Wenwu Zhu

Graph machine learning has been extensively studied in both academia and industry. Although booming with a vast number of emerging methods and techniques, most of the literature is built on the in-distribution hypothesis, i.e., testing and…

机器学习 · 计算机科学 2023-01-02 Haoyang Li , Xin Wang , Ziwei Zhang , Wenwu Zhu

Distribution shifts between training and testing datasets significantly impair the model performance on graph learning. A commonly-taken causal view in graph invariant learning suggests that stable predictive features of graphs are causally…

机器学习 · 计算机科学 2025-12-10 Bohan Wang , Yurui Chang , Wei Jin , Lu Lin

Graph neural networks (GNNs) have exhibited remarkable performance under the assumption that test data comes from the same distribution of training data. However, in real-world scenarios, this assumption may not always be valid.…

机器学习 · 计算机科学 2024-02-15 Kai Guo , Hongzhi Wen , Wei Jin , Yaming Guo , Jiliang Tang , Yi Chang

Graph neural networks (GNNs) have exhibited superior performance in various classification tasks on graph-structured data. However, they encounter the potential vulnerability from the link stealing attacks, which can infer the presence of a…

机器学习 · 计算机科学 2025-05-14 Jiadong Lou , Xu Yuan , Rui Zhang , Xingliang Yuan , Neil Gong , Nian-Feng Tzeng

Graph is a flexible and effective tool to represent complex structures in practice and graph neural networks (GNNs) have been shown to be effective on various graph tasks with randomly separated training and testing data. In real…

机器学习 · 计算机科学 2021-10-11 Shengyu Zhang , Kun Kuang , Jiezhong Qiu , Jin Yu , Zhou Zhao , Hongxia Yang , Zhongfei Zhang , Fei Wu

In order to safely deploy Deep Neural Networks (DNNs) within the perception pipelines of real-time decision making systems, there is a need for safeguards that can detect out-of-training-distribution (OoD) inputs both efficiently and…

机器学习 · 计算机科学 2021-02-26 Apoorva Sharma , Navid Azizan , Marco Pavone

Detecting out-of-distribution (OOD) graphs is crucial for ensuring the safety and reliability of Graph Neural Networks. In unsupervised graph-level OOD detection, models are typically trained using only in-distribution (ID) data, resulting…

机器学习 · 计算机科学 2026-03-03 Li Sun , Lanxu Yang , Jiayu Tian , Bowen Fang , Xiaoyan Yu , Junda Ye , Peng Tang , Hao Peng , Philip S. Yu

Continuous graph neural networks (CGNNs) have garnered significant attention due to their ability to generalize existing discrete graph neural networks (GNNs) by introducing continuous dynamics. They typically draw inspiration from…

神经与进化计算 · 计算机科学 2025-07-15 Nan Yin , Mengzhu Wan , Li Shen , Hitesh Laxmichand Patel , Baopu Li , Bin Gu , Huan Xiong

Graph Neural Networks (GNNs) are susceptible to distribution shifts, creating vulnerability and security issues in critical domains. There is a pressing need to enhance the generalizability of GNNs on out-of-distribution (OOD) test data.…

机器学习 · 计算机科学 2024-10-29 Xiaoxue Han , Huzefa Rangwala , Yue Ning

Despite recent success in using the invariance principle for out-of-distribution (OOD) generalization on Euclidean data (e.g., images), studies on graph data are still limited. Different from images, the complex nature of graphs poses…

机器学习 · 计算机科学 2022-10-12 Yongqiang Chen , Yonggang Zhang , Yatao Bian , Han Yang , Kaili Ma , Binghui Xie , Tongliang Liu , Bo Han , James Cheng

Deep learning on graphs has shown remarkable success across numerous applications, including social networks, bio-physics, traffic networks, and recommendation systems. Regardless of their successes, current methods frequently depend on the…

机器学习 · 计算机科学 2025-09-25 Itay Niv , Neta Rabin

Graph neural networks (GNNs) are proven effective in extracting complex node and structural information from graph data. While current GNNs perform well in node classification tasks within in-distribution (ID) settings, real-world scenarios…

机器学习 · 计算机科学 2025-05-08 Tao Yin , Chen Zhao , Xiaoyan Liu , Minglai Shao

When testing data and training data come from different distributions, deep neural networks (DNNs) will face significant safety risks in practical applications. Therefore, out-of-distribution (OOD) detection techniques, which can identify…

机器学习 · 计算机科学 2026-04-01 Cheng Yang , Yu Hao , Qi Zhang , Chuan Shi

Graph Attention Networks (GATs) have been intensively studied and widely used in graph data learning tasks. Existing GATs generally adopt the self-attention mechanism to conduct graph edge attention learning, requiring expensive…

神经与进化计算 · 计算机科学 2022-09-28 Beibei Wang , Bo Jiang

The open-world test dataset is often mixed with out-of-distribution (OOD) samples, where the deployed models will struggle to make accurate predictions. Traditional detection methods need to trade off OOD detection and in-distribution (ID)…

机器学习 · 计算机科学 2024-04-25 Xu Shen , Yili Wang , Kaixiong Zhou , Shirui Pan , Xin Wang

Graph out-of-distribution (OOD) generalization remains a major challenge in graph learning since graph neural networks (GNNs) often suffer from severe performance degradation under distribution shifts. Invariant learning, aiming to extract…

机器学习 · 计算机科学 2025-02-14 Wenyu Mao , Jiancan Wu , Haoyang Liu , Yongduo Sui , Xiang Wang

In recent years, spiking neural networks (SNNs) have attracted substantial interest due to their potential to replicate the energy-efficient and event-driven processing of biological neurons. Despite this, the application of SNNs in graph…

人工智能 · 计算机科学 2024-07-31 Mingkun Xu , Huifeng Yin , Yujie Wu , Guoqi Li , Faqiang Liu , Jing Pei , Shuai Zhong , Lei Deng

Neural networks trained with SGD were recently shown to rely preferentially on linearly-predictive features and can ignore complex, equally-predictive ones. This simplicity bias can explain their lack of robustness out of distribution…

机器学习 · 计算机科学 2022-09-13 Damien Teney , Ehsan Abbasnejad , Simon Lucey , Anton van den Hengel

Graph Neural Networks (GNNs) have achieved notable success in learning from graph-structured data, owing to their ability to capture intricate dependencies and relationships between nodes. They excel in various applications, including…

机器学习 · 计算机科学 2023-11-29 Akansha A