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In this paper, we tackle the problem of Generalized Category Discovery (GCD). Given a dataset containing both labelled and unlabelled images, the objective is to categorize all images in the unlabelled subset, irrespective of whether they…

计算机视觉与模式识别 · 计算机科学 2025-04-08 Yuanpei Liu , Kai Han

Generalized class discovery (GCD) aims to infer known and unknown categories in an unlabeled dataset leveraging prior knowledge of a labeled set comprising known classes. Existing research implicitly/explicitly assumes that the frequency of…

计算机视觉与模式识别 · 计算机科学 2024-01-12 Ziyun Li , Ben Dai , Furkan Simsek , Christoph Meinel , Haojin Yang

Generalized Category Discovery (GCD) aims to identify novel categories in unlabeled data while leveraging a small labeled subset of known classes. Training a parametric classifier solely on image features often leads to overfitting to old…

计算机视觉与模式识别 · 计算机科学 2026-02-20 Lorenzo Caselli , Marco Mistretta , Simone Magistri , Andrew D. Bagdanov

Generalized Category Discovery (GCD) is a classification task that aims to classify both base and novel classes in unlabeled images, using knowledge from a labeled dataset. In GCD, previous research overlooks scene information or treats it…

计算机视觉与模式识别 · 计算机科学 2025-03-19 Zhengyuan Peng , Jinpeng Ma , Zhimin Sun , Ran Yi , Haichuan Song , Xin Tan , Lizhuang Ma

Generalized Class Discovery (GCD) plays a pivotal role in discerning both known and unknown categories from unlabeled datasets by harnessing the insights derived from a labeled set comprising recognized classes. A significant limitation in…

计算机视觉与模式识别 · 计算机科学 2024-08-27 Ziyun Li , Christoph Meinel , Haojin Yang

Novel Class Discovery (NCD) involves identifying new categories within unlabeled data by utilizing knowledge acquired from previously established categories. However, existing NCD methods often struggle to maintain a balance between the…

机器学习 · 计算机科学 2024-07-26 Yue Hou , Xueyuan Chen , He Zhu , Romei Liu , Bowen Shi , Jiaheng Liu , Junran Wu , Ke Xu

Federated Graph Learning (FGL) enables collaborative learning over distributed graph data, yet existing approaches largely rely on a closed-world assumption, limiting their applicability in dynamic environments where novel categories…

机器学习 · 计算机科学 2026-05-12 Zhongzheng Yuan , Lianshuai Guo , Xunkai Li , Wenyu Wang , Meixia Qu

In this paper, we address the problem of novel class discovery (NCD), which aims to cluster novel classes by leveraging knowledge from disjoint known classes. While recent advances have made significant progress in this area, existing NCD…

计算机视觉与模式识别 · 计算机科学 2025-07-17 Xinhang Wan , Jiyuan Liu , Qian Qu , Suyuan Liu , Chuyu Zhang , Fangdi Wang , Xinwang Liu , En Zhu , Kunlun He

In this paper we tackle the problem of Generalized Category Discovery (GCD). Specifically, given a dataset with labelled and unlabelled images, the task is to cluster all images in the unlabelled subset, whether or not they belong to the…

计算机视觉与模式识别 · 计算机科学 2023-11-29 Sagar Vaze , Andrea Vedaldi , Andrew Zisserman

In this paper, we study the problem of Novel Class Discovery (NCD). NCD aims at inferring novel object categories in an unlabeled set by leveraging from prior knowledge of a labeled set containing different, but related classes. Existing…

计算机视觉与模式识别 · 计算机科学 2021-09-30 Enrico Fini , Enver Sangineto , Stéphane Lathuilière , Zhun Zhong , Moin Nabi , Elisa Ricci

Generalized Category Discovery (GCD) aims to identify a mix of known and novel categories within unlabeled data sets, providing a more realistic setting for image recognition. Essentially, GCD needs to remember existing patterns thoroughly…

计算机视觉与模式识别 · 计算机科学 2025-03-06 Xinzi Cao , Xiawu Zheng , Guanhong Wang , Weijiang Yu , Yunhang Shen , Ke Li , Yutong Lu , Yonghong Tian

One important desideratum of lifelong learning aims to discover novel classes from unlabelled data in a continuous manner. The central challenge is twofold: discovering and learning novel classes while mitigating the issue of catastrophic…

人工智能 · 计算机科学 2024-03-07 Guangyao Chen , Peixi Peng , Yangru Huang , Mengyue Geng , Yonghong Tian

Novel Class Discovery (NCD) is a learning paradigm, where a machine learning model is tasked to semantically group instances from unlabeled data, by utilizing labeled instances from a disjoint set of classes. In this work, we first…

计算机视觉与模式识别 · 计算机科学 2022-04-25 K J Joseph , Sujoy Paul , Gaurav Aggarwal , Soma Biswas , Piyush Rai , Kai Han , Vineeth N Balasubramanian

Generalized Category Discovery is a significant and complex task that aims to identify both known and undefined novel categories from a set of unlabeled data, leveraging another labeled dataset containing only known categories. The primary…

机器学习 · 计算机科学 2024-12-18 Wenbin An , Haonan Lin , Jiahao Nie , Feng Tian , Wenkai Shi , Yaqiang Wu , Qianying Wang , Ping Chen

Generalized Category Discovery (GCD) is a challenging task in which, given a partially labelled dataset, models must categorize all unlabelled instances, regardless of whether they come from labelled categories or from new ones. In this…

计算机视觉与模式识别 · 计算机科学 2025-03-04 Hongjun Wang , Sagar Vaze , Kai Han

We address the problem of generalized category discovery (GCD) in this paper, i.e. clustering the unlabeled images leveraging the information from a set of seen classes, where the unlabeled images could contain both seen classes and unseen…

计算机视觉与模式识别 · 计算机科学 2022-08-04 Yixin Fei , Zhongkai Zhao , Siwei Yang , Bingchen Zhao

At present, object recognition studies are mostly conducted in a closed lab setting with classes in test phase typically in training phase. However, real-world problem is far more challenging because: i) new classes unseen in the training…

机器学习 · 计算机科学 2020-03-24 Xiaojie Guo , Amir Alipour-Fanid , Lingfei Wu , Hemant Purohit , Xiang Chen , Kai Zeng , Liang Zhao

In Generalized Category Discovery (GCD), we cluster unlabeled samples of known and novel classes, leveraging a training dataset of known classes. A salient challenge arises due to domain shifts between these datasets. To address this, we…

计算机视觉与模式识别 · 计算机科学 2024-04-09 Sai Bhargav Rongali , Sarthak Mehrotra , Ankit Jha , Mohamad Hassan N C , Shirsha Bose , Tanisha Gupta , Mainak Singha , Biplab Banerjee

Generalized Category Discovery (GCD) aims to classify both known and novel categories using partially labeled data that contains only known classes. Despite achieving strong performance on existing benchmarks, current textual GCD methods…

计算与语言 · 计算机科学 2025-05-30 Yi Luo , Qiwen Wang , Junqi Yang , Luyao Tang , Zhenghao Lin , Zhenzhe Ying , Weiqiang Wang , Chen Lin

This paper addresses generalized category discovery (GCD), the task of clustering unlabeled data from potentially known or unknown categories with the help of labeled instances from each known category. Compared to traditional…

计算机视觉与模式识别 · 计算机科学 2025-02-14 Menglin Wang , Zhun Zhong , Xiaojin Gong