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相关论文: ImbaGCD: Imbalanced Generalized Category Discovery

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Virtual Big Data (VBD) proved to be effective to alleviate mode collapse and vanishing generator gradient as two major problems of Generative Adversarial Neural Networks (GANs) very recently. In this paper, we investigate the capability of…

机器学习 · 计算机科学 2020-09-18 Hadi Mansourifar , Weidong Shi

We consider the problem of discovering novel object categories in an image collection. While these images are unlabelled, we also assume prior knowledge of related but different image classes. We use such prior knowledge to reduce the…

计算机视觉与模式识别 · 计算机科学 2019-08-28 Kai Han , Andrea Vedaldi , Andrew Zisserman

Class imbalance poses a significant challenge in classification tasks, where traditional approaches often lead to biased models and unreliable predictions. Undersampling and oversampling techniques have been commonly employed to address…

Generalized Category Discovery (GCD) aims to classify unlabelled images from both `seen' and `unseen' classes by transferring knowledge from a set of labelled `seen' class images. A key theme in existing GCD approaches is adapting…

计算机视觉与模式识别 · 计算机科学 2025-03-20 Hongjun Wang , Sagar Vaze , Kai Han

Novel Class Discovery (NCD) is a growing field where we are given during training a labeled set of known classes and an unlabeled set of different classes that must be discovered. In recent years, many methods have been proposed to address…

Continual Generalized Category Discovery (C-GCD) requires identifying novel classes from unlabeled data while retaining knowledge of known classes over time. Existing methods typically update classifier weights dynamically, resulting in…

计算机视觉与模式识别 · 计算机科学 2026-02-24 Jizhou Han , Chenhao Ding , SongLin Dong , Yuhang He , Shaokun Wang , Qiang Wang , Yihong Gong

Graph anomaly detection (GAD) is a critical task in graph machine learning, with the primary objective of identifying anomalous nodes that deviate significantly from the majority. This task is widely applied in various real-world scenarios,…

机器学习 · 计算机科学 2025-07-03 Xiang Li , Jianpeng Qi , Zhongying Zhao , Guanjie Zheng , Lei Cao , Junyu Dong , Yanwei Yu

Classification of large multivariate time series with strong class imbalance is an important task in real-world applications. Standard methods of class weights, oversampling, or parametric data augmentation do not always yield significant…

机器学习 · 统计学 2021-10-15 Grace Deng , Cuize Han , Tommaso Dreossi , Clarence Lee , David S. Matteson

Label Distribution Learning (LDL) is a novel machine learning paradigm that addresses the problem of label ambiguity and has found widespread applications. Obtaining complete label distributions in real-world scenarios is challenging, which…

机器学习 · 计算机科学 2024-10-18 Zhiqiang Kou , Haoyuan Xuan , Jing Wang , Yuheng Jia , Xin Geng

Generalized Category Discovery (GCD) aims to identify both known and unknown categories, with only partial labels given for the known categories, posing a challenging open-set recognition problem. State-of-the-art approaches for GCD task…

计算机视觉与模式识别 · 计算机科学 2026-04-01 Wei He , Xianghan Meng , Zhiyuan Huang , Xianbiao Qi , Rong Xiao , Chun-Guang Li

Automated driving object detection has always been a challenging task in computer vision due to environmental uncertainties. These uncertainties include significant differences in object sizes and encountering the class unseen. It may…

计算机视觉与模式识别 · 计算机科学 2023-11-28 Zezhou Wang , Guitao Cao , Xidong Xi , Jiangtao Wang

Generalized Category Discovery (GCD) is an emerging and challenging open-world problem that has garnered increasing attention in recent years. Most existing GCD methods focus on discovering categories in static images. However, relying…

计算机视觉与模式识别 · 计算机科学 2025-09-09 Zhang Jing , Pu Nan , Xie Yu Xiang , Guo Yanming , Lu Qianqi , Zou Shiwei , Yan Jie , Chen Yan

Traditional semi-supervised learning tasks assume that both labeled and unlabeled data follow the same class distribution, but the realistic open-world scenarios are of more complexity with unknown novel classes mixed in the unlabeled set.…

计算机视觉与模式识别 · 计算机科学 2023-05-23 Jiaming Liu , Yangqiming Wang , Tongze Zhang , Yulu Fan , Qinli Yang , Junming Shao

In the context of high usability in single-class anomaly detection models, recent academic research has become concerned about the more complex multi-class anomaly detection. Although several papers have designed unified models for this…

计算机视觉与模式识别 · 计算机科学 2024-03-22 Xi Jiang , Ying Chen , Qiang Nie , Jianlin Liu , Yong Liu , Chengjie Wang , Feng Zheng

We introduce the first unified framework for *Fine-Grained Domain-Generalized Generalized Category Discovery* (FG-DG-GCD), bringing open-world recognition closer to real-world deployment under domain shift. Unlike conventional GCD, which…

计算机视觉与模式识别 · 计算机科学 2026-03-17 Vaibhav Rathore , Divyam Gupta , Moloud Abdar , Subhasis Chaudhuri , Biplab Banerjee

Classifying incomplete multi-view data is inevitable since arbitrary view missing widely exists in real-world applications. Although great progress has been achieved, existing incomplete multi-view methods are still difficult to obtain a…

机器学习 · 计算机科学 2023-04-12 Mengyao Xie , Zongbo Han , Changqing Zhang , Yichen Bai , Qinghua Hu

Conventional unsupervised anomaly detection (UAD) methods build separate models for each object category. Recent studies have proposed to train a unified model for multiple classes, namely model-unified UAD. However, such methods still…

计算机视觉与模式识别 · 计算机科学 2024-04-17 Jia Guo , Haonan Han , Shuai Lu , Weihang Zhang , Huiqi Li

Graph neural networks (GNNs) have shown promise in addressing graph-related problems, including node classification. However, conventional GNNs assume an even distribution of data across classes, which is often not the case in real-world…

机器学习 · 计算机科学 2023-10-16 Zirui Liang , Yuntao Li , Tianjin Huang , Akrati Saxena , Yulong Pei , Mykola Pechenizkiy

Class imbalance is pervasive in real-world graph datasets, where the majority of annotated nodes belong to a small set of classes (majority classes), leaving many other classes (minority classes) with only a handful of labeled nodes. Graph…

机器学习 · 计算机科学 2024-12-31 Abdullah Alchihabi , Hao Yan , Yuhong Guo

Deep neural networks have achieved state-of-the-art performance in a wide range of recognition/classification tasks. However, when applying deep learning to real-world applications, there are still multiple challenges. A typical challenge…

机器学习 · 计算机科学 2021-02-10 Xin Sun , Zhenning Yang , Chi Zhang , Guohao Peng , Keck-Voon Ling