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As a specific case of graph transfer learning, unsupervised domain adaptation on graphs aims for knowledge transfer from label-rich source graphs to unlabeled target graphs. However, graphs with topology and attributes usually have…

机器学习 · 计算机科学 2024-10-01 Ziyue Qiao , Xiao Luo , Meng Xiao , Hao Dong , Yuanchun Zhou , Hui Xiong

Self-supervised learning of graph neural networks (GNNs) aims to learn an accurate representation of the graphs in an unsupervised manner, to obtain transferable representations of them for diverse downstream tasks. Predictive learning and…

机器学习 · 计算机科学 2022-10-11 Dongki Kim , Jinheon Baek , Sung Ju Hwang

The success of deep learning notoriously requires larger amounts of costly annotated data. This has led to the development of self-supervised learning (SSL) that aims to alleviate this limitation by creating domain specific pretext tasks on…

机器学习 · 计算机科学 2020-06-19 Wei Jin , Tyler Derr , Haochen Liu , Yiqi Wang , Suhang Wang , Zitao Liu , Jiliang Tang

The emergence of graph neural networks (GNNs) has offered a powerful tool for semi-supervised node classification tasks. Subsequent studies have achieved further improvements through refining the message passing schemes in GNN models or…

机器学习 · 计算机科学 2025-11-26 Songbo Wang , Renchi Yang , Yurui Lai , Xiaoyang Lin , Tsz Nam Chan

Deep learning based task systems normally rely on a large amount of manually labeled training data, which is expensive to obtain and subject to operator variations. Moreover, it does not always hold that the manually labeled data and the…

机器学习 · 计算机科学 2019-07-25 Jun Chen , Heye Zhang , Yanping Zhang , Shu Zhao , Raad Mohiaddin , Tom Wong , David Firmin , Guang Yang , Jennifer Keegan

Semi-supervised learning (SSL) over graph-structured data emerges in many network science applications. To efficiently manage learning over graphs, variants of graph neural networks (GNNs) have been developed recently. By succinctly…

机器学习 · 计算机科学 2021-10-22 Alireza Sadeghi , Meng Ma , Bingcong Li , Georgios B. Giannakis

Few-shot learning (FSL), purposing to resolve the problem of data-scarce, has attracted considerable attention in recent years. A popular FSL framework contains two phases: (i) the pre-train phase employs the base data to train a CNN-based…

计算机视觉与模式识别 · 计算机科学 2024-03-20 Rui Xu , Lei Xing , Shuai Shao , Lifei Zhao , Baodi Liu , Weifeng Liu , Yicong Zhou

In recent years, heterogeneous graph few-shot learning has been proposed to address the label sparsity issue in heterogeneous graphs (HGs), which contain various types of nodes and edges. The existing methods have achieved good performance…

机器学习 · 计算机科学 2023-08-11 Pengfei Ding , Yan Wang , Guanfeng Liu

Semi-supervised learning has received attention from researchers, as it allows one to exploit the structure of unlabeled data to achieve competitive classification results with much fewer labels than supervised approaches. The Local and…

机器学习 · 计算机科学 2022-01-11 Bruno Klaus de Aquino Afonso , Lilian Berton

Graph Neural Networks (GNNs) are prominent in handling sparse and unstructured data efficiently and effectively. Specifically, GNNs were shown to be highly effective for node classification tasks, where labelled information is available for…

机器学习 · 计算机科学 2022-12-01 Moshe Eliasof , Eldad Haber , Eran Treister

Unsupervised clustering on speakers is becoming increasingly important for its potential uses in semi-supervised learning. In reality, we are often presented with enormous amounts of unlabeled data from multi-party meetings and discussions.…

音频与语音处理 · 电气工程与系统科学 2022-04-26 Fuchuan Tong , Siqi Zheng , Min Zhang , Yafeng Chen , Hongbin Suo , Qingyang Hong , Lin Li

Self-training (ST) is a simple yet effective semi-supervised learning method. However, why and how ST improves generalization performance by using potentially erroneous pseudo-labels is still not well understood. To deepen the understanding…

机器学习 · 统计学 2024-05-08 Takashi Takahashi

In an effort to further advance semi-supervised generative and classification tasks, we propose a simple yet effective training strategy called dual pseudo training (DPT), built upon strong semi-supervised learners and diffusion models. DPT…

计算机视觉与模式识别 · 计算机科学 2023-11-01 Zebin You , Yong Zhong , Fan Bao , Jiacheng Sun , Chongxuan Li , Jun Zhu

Graph learning (GL) can dynamically capture the distribution structure (graph structure) of data based on graph convolutional networks (GCN), and the learning quality of the graph structure directly influences GCN for semi-supervised…

计算机视觉与模式识别 · 计算机科学 2020-06-01 Guangfeng Lin , Xiaobing Kang , Kaiyang Liao , Fan Zhao , Yajun Chen

Network anomaly detection aims to find network elements (e.g., nodes, edges, subgraphs) with significantly different behaviors from the vast majority. It has a profound impact in a variety of applications ranging from finance, healthcare to…

机器学习 · 计算机科学 2021-02-23 Kaize Ding , Qinghai Zhou , Hanghang Tong , Huan Liu

Graph self-training is a semi-supervised learning method that iteratively selects a set of unlabeled data to retrain the underlying graph neural network (GNN) model and improve its prediction performance. While selecting highly confident…

机器学习 · 计算机科学 2024-10-15 Fangxin Wang , Kay Liu , Sourav Medya , Philip S. Yu

Pseudo Labeling is a technique used to improve the performance of semi-supervised Graph Neural Networks (GNNs) by generating additional pseudo-labels based on confident predictions. However, the quality of generated pseudo-labels has been a…

机器学习 · 计算机科学 2023-12-20 Weigang Lu , Ziyu Guan , Wei Zhao , Yaming Yang , Yuanhai Lv , Lining Xing , Baosheng Yu , Dacheng Tao

Few-shot graph anomaly detection (GAD) has recently garnered increasing attention, which aims to discern anomalous patterns among abundant unlabeled test nodes under the guidance of a limited number of labeled training nodes. Existing…

机器学习 · 计算机科学 2024-10-14 Jiazhen Chen , Sichao Fu , Zhibin Zhang , Zheng Ma , Mingbin Feng , Tony S. Wirjanto , Qinmu Peng

Semi-supervised learning (SSL) has recently received increased attention from machine learning researchers. By enabling effective propagation of known labels in graph-based deep learning (GDL) algorithms, SSL is poised to become an…

机器学习 · 计算机科学 2022-03-24 Alex Morehead , Watchanan Chantapakul , Jianlin Cheng

Domain adaptation aims to leverage a labeled source domain to learn a classifier for the unlabeled target domain with a different distribution. Previous methods mostly match the distribution between two domains by global or class alignment.…

计算机视觉与模式识别 · 计算机科学 2022-05-30 Mei Wang , Weihong Deng