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Node classification is one of the core tasks on attributed graphs, but successful graph learning solutions require sufficiently labeled data. To keep annotation costs low, active graph learning focuses on selecting the most qualitative…

Machine Learning · Computer Science 2023-10-03 Sandra Gilhuber , Julian Busch , Daniel Rotthues , Christian M. M. Frey , Thomas Seidl

Robots are often required to localize in environments with unknown object classes and semantic ambiguity. However, when performing global localization using semantic objects, high semantic ambiguity intensifies object misclassification and…

Robotics · Computer Science 2025-12-16 Gihyeon Lee , Jungwoo Lee , Juwon Kim , Young-Sik Shin , Younggun Cho

Graph Neural Networks (GNNs) have shown state-of-the-art improvements in node classification tasks on graphs. While these improvements have been largely demonstrated in a multi-class classification scenario, a more general and realistic…

Machine Learning · Computer Science 2024-03-01 Tianqi Zhao , Ngan Thi Dong , Alan Hanjalic , Megha Khosla

This study introduces the Multi-Scale Weight-Based Pairwise Coarsening and Contrastive Learning (MPCCL) model, a novel approach for attributed graph clustering that effectively bridges critical gaps in existing methods, including long-range…

Machine Learning · Computer Science 2025-07-29 Binxiong Li , Yuefei Wang , Binyu Zhao , Heyang Gao , Benhan Yang , Quanzhou Luo , Xue Li , Xu Xiang , Yujie Liu , Huijie Tang

Driving scenes are inherently heterogeneous and dynamic. Multi-attribute scene identification, as a high-level visual perception capability, provides autonomous vehicles (AVs) with essential contextual awareness to understand, reason…

Computer Vision and Pattern Recognition · Computer Science 2025-09-19 Ke Li , Chenyu Zhang , Yuxin Ding , Xianbiao Hu , Ruwen Qin

Multi-label node classification is an important yet under-explored domain in graph mining as many real-world nodes belong to multiple categories rather than just a single one. Although a few efforts have been made by utilizing Graph…

Machine Learning · Computer Science 2025-06-18 Yuanchen Bei , Weizhi Chen , Hao Chen , Sheng Zhou , Carl Yang , Jiapei Fan , Longtao Huang , Jiajun Bu

Graph neural network, as a powerful graph representation technique based on deep learning, has shown superior performance and attracted considerable research interest. However, it has not been fully considered in graph neural network for…

Social and Information Networks · Computer Science 2021-01-21 Xiao Wang , Houye Ji , Chuan Shi , Bai Wang , Peng Cui , P. Yu , Yanfang Ye

Multimodal graphs, which integrate unstructured heterogeneous data with structured interconnections, offer substantial real-world utility but remain insufficiently explored in unsupervised learning. In this work, we initiate the study of…

Artificial Intelligence · Computer Science 2025-07-22 Zhaochen Guo , Zhixiang Shen , Xuanting Xie , Liangjian Wen , Zhao Kang

Multi-label image recognition in the low-label regime is a task of great challenge and practical significance. Previous works have focused on learning the alignment between textual and visual spaces to compensate for limited image labels,…

Computer Vision and Pattern Recognition · Computer Science 2023-12-15 Ping Hu , Ximeng Sun , Stan Sclaroff , Kate Saenko

Unsupervised node representation learning aims to obtain meaningful node embeddings without relying on node labels. To achieve this, graph convolution, which aggregates information from neighboring nodes, is commonly employed to encode node…

Machine Learning · Computer Science 2025-12-18 Sunwoo Kim , Soo Yong Lee , Kyungho Kim , Hyunjin Hwang , Jaemin Yoo , Kijung Shin

Graph anomaly detection has gained significant attention across various domains, particularly in critical applications like fraud detection in e-commerce platforms and insider threat detection in cybersecurity. Usually, these data are…

Machine Learning · Computer Science 2025-02-20 Lecheng Zheng , John R. Birge , Haiyue Wu , Yifang Zhang , Jingrui He

Understanding human intentions (e.g., emotions) from videos has received considerable attention recently. Video streams generally constitute a blend of temporal data stemming from distinct modalities, including natural language, facial…

Computer Vision and Pattern Recognition · Computer Science 2024-10-01 Dingkang Yang , Mingcheng Li , Linhao Qu , Kun Yang , Peng Zhai , Song Wang , Lihua Zhang

Heterogeneous graph neural networks(HGNNs) have recently shown impressive capability in modeling heterogeneous graphs that are ubiquitous in real-world applications. Most existing methods for heterogeneous graphs mainly learn node…

Machine Learning · Computer Science 2024-06-17 Zeyuan Zhao , Qingqing Ge , Anfeng Cheng , Yiding Liu , Xiang Li , Shuaiqiang Wang

Federated Graph Learning (FGL) enables privacy-preserving, distributed training of graph neural networks without sharing raw data. Among its approaches, subgraph-FL has become the dominant paradigm, with most work focused on improving…

Machine Learning · Computer Science 2025-04-15 Zhengyu Wu , Boyang Pang , Xunkai Li , Yinlin Zhu , Daohan Su , Bowen Fan , Rong-Hua Li , Guoren Wang , Chenghu Zhou

Many real-world applications of image recognition require multi-label learning, whose goal is to find all labels in an image. Thus, robustness of such systems to adversarial image perturbations is extremely important. However, despite a…

Computer Vision and Pattern Recognition · Computer Science 2022-07-13 Hassan Mahmood , Ehsan Elhamifar

Recent graph-based models for joint multiple intent detection and slot filling have obtained promising results through modeling the guidance from the prediction of intents to the decoding of slot filling. However, existing methods (1) only…

Computation and Language · Computer Science 2022-11-08 Bowen Xing , Ivor W. Tsang

Clinical settings are often characterized by abundant unlabelled data and limited labelled data. This is typically driven by the high burden placed on oracles (e.g., physicians) to provide annotations. One way to mitigate this burden is via…

Machine Learning · Computer Science 2022-05-19 Dani Kiyasseh , Tingting Zhu , David A. Clifton

The primary challenge of multi-label active learning, differing it from multi-class active learning, lies in assessing the informativeness of an indefinite number of labels while also accounting for the inherited label correlation. Existing…

Machine Learning · Computer Science 2025-09-05 Yuanyuan Qi , Jueqing Lu , Xiaohao Yang , Joanne Enticott , Lan Du

Unsupervised heterogeneous graph representation learning (UHGRL) has gained increasing attention due to its significance in handling practical graphs without labels. However, heterophily has been largely ignored, despite its ubiquitous…

Machine Learning · Computer Science 2025-02-05 Zhixiang Shen , Zhao Kang

Federated Learning (FL) aims to learn a single global model that enables the central server to help the model training in local clients without accessing their local data. The key challenge of FL is the heterogeneity of local data in…

Machine Learning · Computer Science 2023-04-17 Sicong Liang , Junchao Tian , Shujun Yang , Yu Zhang