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Out-of-distribution (OOD) generalization has gained increasing attentions for learning on graphs, as graph neural networks (GNNs) often exhibit performance degradation with distribution shifts. The challenge is that distribution shifts on…

机器学习 · 计算机科学 2024-08-19 Qitian Wu , Fan Nie , Chenxiao Yang , Tianyi Bao , Junchi Yan

We study the self-stabilizing leader election problem in anonymous $n$-nodes networks. Achieving self-stabilization with low space memory complexity is particularly challenging, and designing space-optimal leader election algorithms remains…

分布式、并行与集群计算 · 计算机科学 2026-02-20 Lelia Blin , Sylvain Gay , Isabella Ziccardi

Node classification on graphs is of great importance in many applications. Due to the limited labeling capability and evolution in real-world open scenarios, novel classes can emerge on unlabeled testing nodes. However, little attention has…

机器学习 · 计算机科学 2024-04-01 Yucheng Jin , Yun Xiong , Juncheng Fang , Xixi Wu , Dongxiao He , Xing Jia , Bingchen Zhao , Philip Yu

Out-of-distribution (OOD) detection is essential to prevent anomalous inputs from causing a model to fail during deployment. While improved OOD detection methods have emerged, they often rely on the final layer outputs and require a full…

计算机视觉与模式识别 · 计算机科学 2021-05-03 Ziqian Lin , Sreya Dutta Roy , Yixuan Li

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

With the progressive advancements in deep graph learning, out-of-distribution (OOD) detection for graph data has emerged as a critical challenge. While the efficacy of auxiliary datasets in enhancing OOD detection has been extensively…

机器学习 · 计算机科学 2024-08-01 Junwei He , Qianqian Xu , Yangbangyan Jiang , Zitai Wang , Yuchen Sun , Qingming Huang

This paper presents a new Network Intrusion Detection System (NIDS) based on Graph Neural Networks (GNNs). GNNs are a relatively new sub-field of deep neural networks, which can leverage the inherent structure of graph-based data. Training…

网络与互联网体系结构 · 计算机科学 2023-05-12 Wai Weng Lo , Siamak Layeghy , Mohanad Sarhan , Marcus Gallagher , Marius Portmann

Graph Out-of-Distribution (OOD) classification often suffers from sharp performance drops, particularly under category imbalance and structural noise. This work tackles two pressing challenges in this context: (1) the underperformance of…

机器学习 · 计算机科学 2025-06-25 Yang Zhou , Xiaoning Ren

Graph Neural Networks (GNNs) are state-of-the-art models for performing prediction tasks on graphs. While existing GNNs have shown great performance on various tasks related to graphs, little attention has been paid to the scenario where…

机器学习 · 计算机科学 2023-08-15 Yu Song , Donglin Wang

Out-of-distribution (OOD) detection is important for deploying machine learning models in the real world, where test data from shifted distributions can naturally arise. While a plethora of algorithmic approaches have recently emerged for…

机器学习 · 计算机科学 2021-12-03 Peyman Morteza , Yixuan Li

Natural Language Understanding (NLU) is a vital component of dialogue systems, and its ability to detect Out-of-Domain (OOD) inputs is critical in practical applications, since the acceptance of the OOD input that is unsupported by the…

计算与语言 · 计算机科学 2022-05-25 Yinhe Zheng , Guanyi Chen , Minlie Huang

In autonomous driving, navigation through unsignaled intersections with many traffic participants moving around is a challenging task. To provide a solution to this problem, we propose a novel branched network G-CIL for the navigation…

机器人学 · 计算机科学 2021-02-02 Xiaodong Mei , Yuxiang Sun , Yuying Chen , Congcong Liu , Ming Liu

LiDAR-based perception is critical for autonomous driving due to its robustness to poor lighting and visibility conditions. Yet, current models operate under the closed-set assumption and often fail to recognize unexpected…

计算机视觉与模式识别 · 计算机科学 2026-04-20 Zizhao Li , Zhengkang Xiang , Jiayang Ao , Feng Liu , Joseph West , Kourosh Khoshelham

In many causal learning problems, variables of interest are often not all measured over the same observations, but are instead distributed across multiple datasets with overlapping variables. Tillman et al. (2008) presented the first…

机器学习 · 统计学 2024-11-08 Praveen Nair , Payal Bhandari , Mohammadsajad Abavisani , Sergey Plis , David Danks

Recently, Out-of-distribution (OOD) detection in dynamic graphs, which aims to identify whether incoming data deviates from the distribution of the in-distribution (ID) training set, has garnered considerable attention in security-sensitive…

机器学习 · 计算机科学 2025-06-16 Nan Sun , Xixun Lin , Zhiheng Zhou , Yanmin Shang , Zhenlin Cheng , Yanan Cao

Out-of-distribution (OOD) detection is crucial for model reliability, as it identifies samples from unknown classes and reduces errors due to unexpected inputs. Vision-Language Models (VLMs) such as CLIP are emerging as powerful tools for…

计算机视觉与模式识别 · 计算机科学 2024-07-15 Yabin Zhang , Wenjie Zhu , Chenhang He , Lei Zhang

Grid-centric perception is a crucial field for mobile robot perception and navigation. Nonetheless, grid-centric perception is less prevalent than object-centric perception as autonomous vehicles need to accurately perceive highly dynamic,…

计算机视觉与模式识别 · 计算机科学 2024-06-11 Yining Shi , Kun Jiang , Jiusi Li , Zelin Qian , Junze Wen , Mengmeng Yang , Ke Wang , Diange Yang

We propose a new network architecture, Gated Attention Networks (GaAN), for learning on graphs. Unlike the traditional multi-head attention mechanism, which equally consumes all attention heads, GaAN uses a convolutional sub-network to…

机器学习 · 计算机科学 2018-03-21 Jiani Zhang , Xingjian Shi , Junyuan Xie , Hao Ma , Irwin King , Dit-Yan Yeung

The commuting origin-destination~(OD) matrix is a critical input for urban planning and transportation, providing crucial information about the population residing in one region and working in another within an interested area. Despite its…

社会与信息网络 · 计算机科学 2024-07-25 Can Rong , Jingtao Ding , Yan Liu , Yong Li

State-of-the-art algorithms for Approximate Nearest Neighbor Search (ANNS) such as DiskANN, FAISS-IVF, and HNSW build data dependent indices that offer substantially better accuracy and search efficiency over data-agnostic indices by…