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Graph anomaly detection has long been an important problem in various domains pertaining to information security such as financial fraud, social spam and network intrusion. The majority of existing methods are performed in an unsupervised…

机器学习 · 计算机科学 2024-08-27 Xiongxiao Xu , Kaize Ding , Canyu Chen , Kai Shu

Model agnostic meta-learning algorithms aim to infer priors from several observed tasks that can then be used to adapt to a new task with few examples. Given the inherent diversity of tasks arising in existing benchmarks, recent methods use…

Despite the ample availability of graph data, obtaining vertex labels is a tedious and expensive task. Therefore, it is desirable to learn from a few labeled vertices only. Existing few-shot learners assume a class oracle, which provides…

机器学习 · 计算机科学 2025-04-29 Felix Burr , Marcel Hoffmann , Ansgar Scherp

The objective of few-shot object detection (FSOD) is to detect novel objects with few training samples. The core challenge of this task is how to construct a generalized feature space for novel categories with limited data on the basis of…

计算机视觉与模式识别 · 计算机科学 2025-04-15 Ruoyu Chen , Hua Zhang , Jingzhi Li , Li Liu , Zhen Huang , Xiaochun Cao

Few-shot image classification aims to classify novel classes with few labeled samples. Recent research indicates that deep local descriptors have better representational capabilities. These studies recognize the impact of background noise…

计算机视觉与模式识别 · 计算机科学 2024-08-13 Qian Qiao , Yu Xie , Shaoyao Huang , Fanzhang Li

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

Graph-level anomaly detection aims to identify anomalous graphs or subgraphs within graph datasets, playing a vital role in various fields such as fraud detection, review classification, and biochemistry. While Graph Neural Networks (GNNs)…

机器学习 · 计算机科学 2025-10-10 Liting Li , Yumeng Wang , Yueheng Sun

With the tremendous expansion of graphs data, node classification shows its great importance in many real-world applications. Existing graph neural network based methods mainly focus on classifying unlabeled nodes within fixed classes with…

人工智能 · 计算机科学 2022-06-06 Bin Lu , Xiaoying Gan , Lina Yang , Weinan Zhang , Luoyi Fu , Xinbing Wang

Few-shot text classification aims to recognize unseen classes with limited labeled text samples. Existing approaches focus on boosting meta-learners by developing complex algorithms in the training stage. However, the labeled samples are…

机器学习 · 计算机科学 2026-03-04 Yunlong Gao , Xinyue Liu , Yingbo Wang , Linlin Zong , Bo Xu

We propose regression networks for the problem of few-shot classification, where a classifier must generalize to new classes not seen in the training set, given only a small number of examples of each class. In high dimensional embedding…

机器学习 · 计算机科学 2020-06-22 Arnout Devos , Matthias Grossglauser

The focus of recent meta-learning research has been on the development of learning algorithms that can quickly adapt to test time tasks with limited data and low computational cost. Few-shot learning is widely used as one of the standard…

计算机视觉与模式识别 · 计算机科学 2020-06-18 Yonglong Tian , Yue Wang , Dilip Krishnan , Joshua B. Tenenbaum , Phillip Isola

Few-shot classification aims to learn a classifier to recognize unseen classes during training with limited labeled examples. While significant progress has been made, the growing complexity of network designs, meta-learning algorithms, and…

计算机视觉与模式识别 · 计算机科学 2020-01-14 Wei-Yu Chen , Yen-Cheng Liu , Zsolt Kira , Yu-Chiang Frank Wang , Jia-Bin Huang

Standard few-shot relation classification (RC) is designed to learn a robust classifier with only few labeled data for each class. However, previous works rarely investigate the effects of a different number of classes (i.e., $N$-way) and…

机器学习 · 计算机科学 2021-10-19 Hongru Wang , Zhijing Jin , Jiarun Cao , Gabriel Pui Cheong Fung , Kam-Fai Wong

Few-Shot learning aims to train and optimize a model that can adapt to unseen visual classes with only a few labeled examples. The existing few-shot learning (FSL) methods, heavily rely only on visual data, thus fail to capture the semantic…

计算机视觉与模式识别 · 计算机科学 2022-10-21 Mohamed Afham , Ranga Rodrigo

We consider the task of few shot link prediction on graphs. The goal is to learn from a distribution over graphs so that a model is able to quickly infer missing edges in a new graph after a small amount of training. We show that current…

机器学习 · 计算机科学 2020-03-03 Avishek Joey Bose , Ankit Jain , Piero Molino , William L. Hamilton

Contrastive learning methods have attracted considerable attention due to their remarkable success in analyzing graph-structured data. Inspired by the success of contrastive learning, we propose a novel framework for contrastive…

机器学习 · 计算机科学 2023-06-21 Xiaojuan Zhang , Jun Fu , Shuang Li

Transferring learned models to novel tasks is a challenging problem, particularly if only very few labeled examples are available. Although this few-shot learning setup has received a lot of attention recently, most proposed methods focus…

机器学习 · 计算机科学 2020-09-16 Xiahan Shi , Leonard Salewski , Martin Schiegg , Zeynep Akata , Max Welling

Learning with few labeled data is a key challenge for visual recognition, as deep neural networks tend to overfit using a few samples only. One of the Few-shot learning methods called metric learning addresses this challenge by first…

计算机视觉与模式识别 · 计算机科学 2022-03-28 Li Ke , Meng Pan , Weigao Wen , Dong Li

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

Deep neural networks (DNNs) have achieved state-of-the-art results on time series classification (TSC) tasks. In this work, we focus on leveraging DNNs in the often-encountered practical scenario where access to labeled training data is…

机器学习 · 计算机科学 2021-03-05 Jyoti Narwariya , Pankaj Malhotra , Lovekesh Vig , Gautam Shroff , Vishnu Tv