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Knowledge distillation (KD) has emerged as a promising technique for addressing the computational challenges associated with deploying large-scale recommender systems. KD transfers the knowledge of a massive teacher system to a compact…

Information Retrieval · Computer Science 2024-06-27 Gyuseok Lee , SeongKu Kang , Wonbin Kweon , Hwanjo Yu

In this study, we tackle Generalized Category Discovery (GCD) via a Relational Retrieval perspective, explicitly coupling labeled and unlabeled data through bidirectional knowledge transfer. While existing methods treat these sources…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Yulin Xu , Chunqi Guo , Yuanzhen Shuai , Jianyuan Ni

Constantly discovering novel concepts is crucial in evolving environments. This paper explores the underexplored task of Continual Generalized Category Discovery (C-GCD), which aims to incrementally discover new classes from unlabeled data…

Computer Vision and Pattern Recognition · Computer Science 2024-10-11 Shijie Ma , Fei Zhu , Zhun Zhong , Wenzhuo Liu , Xu-Yao Zhang , Cheng-Lin Liu

Generalized Category Discovery (GCD) aims to identify both known and novel categories within unlabeled data by leveraging a set of labeled examples from known categories. Existing GCD methods primarily depend on semantic labels and global…

Computer Vision and Pattern Recognition · Computer Science 2026-05-22 Fernando Julio Cendra , Kai Han

Cross-modality distillation arises as an important topic for data modalities containing limited knowledge such as depth maps and high-quality sketches. Such techniques are of great importance, especially for memory and privacy-restricted…

Machine Learning · Computer Science 2024-05-29 Hangyu Lin , Chen Liu , Chengming Xu , Zhengqi Gao , Yanwei Fu , Yuan Yao

Post-training endows pretrained LLMs with a variety of desirable skills, including instruction-following, reasoning, and others. However, these post-trained LLMs only encode knowledge up to a cut-off date, necessitating continual…

Computation and Language · Computer Science 2026-02-19 Shankar Padmanabhan , Mustafa Omer Gul , Tanya Goyal

Class incremental medical image segmentation (CIMIS) aims to preserve knowledge of previously learned classes while learning new ones without relying on old-class labels. However, existing methods 1) either adopt one-size-fits-all…

Computer Vision and Pattern Recognition · Computer Science 2025-12-30 Shengqian Zhu , Chengrong Yu , Qiang Wang , Ying Song , Guangjun Li , Jiafei Wu , Xiaogang Xu , Zhang Yi , Junjie Hu

Training models continually to detect and classify objects, from new classes and new domains, remains an open problem. In this work, we conduct a thorough analysis of why and how object detection models forget catastrophically. We focus on…

Computer Vision and Pattern Recognition · Computer Science 2022-10-10 Eli Verwimp , Kuo Yang , Sarah Parisot , Hong Lanqing , Steven McDonagh , Eduardo Pérez-Pellitero , Matthias De Lange , Tinne Tuytelaars

Although a number of studies are devoted to novel category discovery, most of them assume a static setting where both labeled and unlabeled data are given at once for finding new categories. In this work, we focus on the application…

Machine Learning · Computer Science 2022-10-11 Xinwei Zhang , Jianwen Jiang , Yutong Feng , Zhi-Fan Wu , Xibin Zhao , Hai Wan , Mingqian Tang , Rong Jin , Yue Gao

Successful continual learning of new knowledge would enable intelligent systems to recognize more and more classes of objects. However, current intelligent systems often fail to correctly recognize previously learned classes of objects when…

Computer Vision and Pattern Recognition · Computer Science 2021-08-21 Changhong Zhong , Zhiying Cui , Ruixuan Wang , Wei-Shi Zheng

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…

Computer Vision and Pattern Recognition · Computer Science 2026-04-01 Wei He , Xianghan Meng , Zhiyuan Huang , Xianbiao Qi , Rong Xiao , Chun-Guang Li

In this paper, we address the problem of generalized category discovery (GCD), \ie, given a set of images where part of them are labelled and the rest are not, the task is to automatically cluster the images in the unlabelled data,…

Computer Vision and Pattern Recognition · Computer Science 2023-08-21 Bingchen Zhao , Xin Wen , Kai Han

In this paper, we investigate the knowledge distillation (KD) strategy for object detection and propose an effective framework applicable to both homogeneous and heterogeneous student-teacher pairs. The conventional feature imitation…

Computer Vision and Pattern Recognition · Computer Science 2021-10-13 Lewei Yao , Renjie Pi , Hang Xu , Wei Zhang , Zhenguo Li , Tong Zhang

Continual Novel Class Discovery (CNCD) aims to continually discover novel classes without labels while maintaining the recognition capability for previously learned classes. The main challenges faced by CNCD include the feature-discrepancy…

Computer Vision and Pattern Recognition · Computer Science 2024-05-13 Yifan Yu , Shaokun Wang , Yuhang He , Junzhe Chen , Yihong Gong

Knowledge distillation enhances the performance of compact student networks by transferring knowledge from more powerful teacher networks without introducing additional parameters. In the feature space, local regions within an individual…

Computer Vision and Pattern Recognition · Computer Science 2025-10-14 Cuipeng Wang , Haipeng Wang

Knowledge distillation (KD), a technique widely employed in computer vision, has emerged as a de facto standard for improving the performance of small neural networks. However, prevailing KD-based approaches in video tasks primarily focus…

Computer Vision and Pattern Recognition · Computer Science 2023-12-15 Guiqin Wang , Peng Zhao , Yanjiang Shi , Cong Zhao , Shusen Yang

Previous knowledge distillation methods have shown their impressive performance on model compression tasks, however, it is hard to explain how the knowledge they transferred helps to improve the performance of the student network. In this…

Computer Vision and Pattern Recognition · Computer Science 2023-04-26 Ziyao Guo , Haonan Yan , Hui Li , Xiaodong Lin

Incremental learning targets at achieving good performance on new categories without forgetting old ones. Knowledge distillation has been shown critical in preserving the performance on old classes. Conventional methods, however,…

Computer Vision and Pattern Recognition · Computer Science 2020-09-08 Peng Zhou , Long Mai , Jianming Zhang , Ning Xu , Zuxuan Wu , Larry S. Davis

We tackle the issue of generalized category discovery (GCD). GCD considers the open-world problem of automatically clustering a partially labelled dataset, in which the unlabelled data may contain instances from both novel categories and…

Computer Vision and Pattern Recognition · Computer Science 2024-03-26 Shaozhe Hao , Kai Han , Kwan-Yee K. Wong

A fundamental and challenging problem in deep learning is catastrophic forgetting, i.e. the tendency of neural networks to fail to preserve the knowledge acquired from old tasks when learning new tasks. This problem has been widely…

Computer Vision and Pattern Recognition · Computer Science 2022-05-23 Guanglei Yang , Enrico Fini , Dan Xu , Paolo Rota , Mingli Ding , Moin Nabi , Xavier Alameda-Pineda , Elisa Ricci