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This paper explores a novel setting called Generalized Category Discovery in Semantic Segmentation (GCDSS), aiming to segment unlabeled images given prior knowledge from a labeled set of base classes. The unlabeled images contain pixels of…

Computer Vision and Pattern Recognition · Computer Science 2023-11-21 Zhengyuan Peng , Qijian Tian , Jianqing Xu , Yizhang Jin , Xuequan Lu , Xin Tan , Yuan Xie , Lizhuang Ma

Generalized Category Discovery (GCD) tackles the challenging problem of categorizing unlabeled images into both known and novel classes within a partially labeled dataset, without prior knowledge of the number of unknown categories.…

Computer Vision and Pattern Recognition · Computer Science 2025-07-03 Mingfu Yan , Jiancheng Huang , Yifan Liu , Shifeng Chen

With the development of deep learning techniques, supervised learning has achieved performances surpassing those of humans. Researchers have designed numerous corresponding models for different data modalities, achieving excellent results…

Artificial Intelligence · Computer Science 2023-08-29 Qiang Li , Qiuyang Ma , Weizhi Nie , Anan Liu

We tackle the problem of novel class discovery and localization (NCDL). In this setting, we assume a source dataset with supervision for only some object classes. Instances of other classes need to be discovered, classified, and localized…

Computer Vision and Pattern Recognition · Computer Science 2022-12-01 Vladimir Fomenko , Ismail Elezi , Deva Ramanan , Laura Leal-Taixé , Aljoša Ošep

Collaborative filtering (CF) stands as a cornerstone in recommender systems, yet effectively leveraging the massive unlabeled data presents a significant challenge. Current research focuses on addressing the challenge of unlabeled data by…

Information Retrieval · Computer Science 2024-12-25 Yuhan Zhao , Rui Chen , Qilong Han , Hongtao Song , Li Chen

We tackle the novel class discovery in point cloud segmentation, which discovers novel classes based on the semantic knowledge of seen classes. Existing work proposes an online point-wise clustering method with a simplified equal class-size…

Computer Vision and Pattern Recognition · Computer Science 2024-07-18 Ruijie Xu , Chuyu Zhang , Hui Ren , Xuming He

Neural node embeddings have recently emerged as a powerful representation for supervised learning tasks involving graph-structured data. We leverage this recent advance to develop a novel algorithm for unsupervised community discovery in…

Social and Information Networks · Computer Science 2017-06-30 Weicong Ding , Christy Lin , Prakash Ishwar

New intent discovery is of great value to natural language processing, allowing for a better understanding of user needs and providing friendly services. However, most existing methods struggle to capture the complicated semantics of…

Computation and Language · Computer Science 2023-12-14 Hanlei Zhang , Hua Xu , Xin Wang , Fei Long , Kai Gao

In open-world scenarios, Generalized Category Discovery (GCD) requires identifying both known and novel categories within unlabeled data. However, existing methods often suffer from prototype confusion caused by shortcut learning, which…

Computer Vision and Pattern Recognition · Computer Science 2025-12-01 Kailin Lyu , Jianwei He , Long Xiao , Jianing Zeng , Liang Fan , Lin Shu , Jie Hao

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…

Machine Learning · Computer Science 2023-06-21 Xiaojuan Zhang , Jun Fu , Shuang Li

Visual recognition tasks are often limited to dealing with a small subset of classes simply because the labels for the remaining classes are unavailable. We are interested in identifying novel concepts in a dataset through representation…

Computer Vision and Pattern Recognition · Computer Science 2023-03-17 Geeho Kim , Junoh Kang , Bohyung Han

Generalized Category Discovery (GCD) faces the challenge of categorizing unlabeled data containing both known and novel classes, given only labels for known classes. Previous studies often treat each class independently, neglecting the…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Fang Zhou , Zhiqiang Chen , Martin Pavlovski , Yizhong Zhang

We introduce a novel task, called Generalized Relation Discovery (GRD), for open-world relation extraction. GRD aims to identify unlabeled instances in existing pre-defined relations or discover novel relations by assigning instances to…

Computation and Language · Computer Science 2024-01-15 Jiaxin Wang , Lingling Zhang , Jun Liu , Tianlin Guo , Wenjun Wu

In the quest for unveiling novel categories at test time, we confront the inherent limitations of traditional supervised recognition models that are restricted by a predefined category set. While strides have been made in the realms of…

Computer Vision and Pattern Recognition · Computer Science 2024-01-19 Sarah Rastegar , Hazel Doughty , Cees G. M. Snoek

Existing industrial anomaly detection methods mainly determine whether an anomaly is present. However, real-world applications also require discovering and classifying multiple anomaly types. Since industrial anomalies are semantically…

Computer Vision and Pattern Recognition · Computer Science 2025-11-18 Botong Zhao , Qijun Shi , Shujing Lyu , Yue Lu

Existed pre-trained models have achieved state-of-the-art performance on various text classification tasks. These models have proven to be useful in learning universal language representations. However, the semantic discrepancy between…

Machine Learning · Computer Science 2022-01-07 Jinhe Lan , Qingyuan Zhan , Chenhao Jiang , Kunping Yuan , Desheng Wang

Graph convolutional network (GCN) provides a powerful means for graph-based semi-supervised tasks. However, as a localized first-order approximation of spectral graph convolution, the classic GCN can not take full advantage of unlabeled…

Machine Learning · Computer Science 2018-09-27 Yawei Luo , Tao Guan , Junqing Yu , Ping Liu , Yi Yang

Generalized Category Discovery (GCD) seeks to uncover novel categories in unlabeled data while preserving recognition of known categories, yet prevailing visual-only pipelines and the loose coupling between supervised learning and discovery…

Computer Vision and Pattern Recognition · Computer Science 2026-03-23 Jizhou Han , Chenhao Ding , Yuhang He , Qiang Wang , Shaokun Wang , SongLin Dong , Yihong Gong

Active learning is a commonly used approach that reduces the labeling effort required to train deep neural networks. However, the effectiveness of current active learning methods is limited by their closed-world assumptions, which assume…

Machine Learning · Computer Science 2024-01-11 Ruiyu Mao , Ouyang Xu , Yunhui Guo

Recently, multi-class anomaly classification has garnered increasing attention. Previous methods directly cluster anomalies but often struggle due to the lack of anomaly-prior knowledge. Acquiring this knowledge faces two issues: the…

Computer Vision and Pattern Recognition · Computer Science 2025-03-28 Ziming Huang , Xurui Li , Haotian Liu , Feng Xue , Yuzhe Wang , Yu Zhou
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