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Existing Class Incremental Learning (CIL) methods are based on a supervised classification framework sensitive to data labels. When updating them based on the new class data, they suffer from catastrophic forgetting: the model cannot…

Machine Learning · Computer Science 2021-11-23 Zixuan Ni , Siliang Tang , Yueting Zhuang

Deep neural networks perform remarkably well in close-world scenarios. However, novel classes emerged continually in real applications, making it necessary to learn incrementally. Class-incremental learning (CIL) aims to gradually recognize…

Computer Vision and Pattern Recognition · Computer Science 2024-03-28 Wenzhuo Liu , Fei Zhu , Cheng-Lin Liu

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…

Computer Vision and Pattern Recognition · Computer Science 2024-03-22 Xi Jiang , Ying Chen , Qiang Nie , Jianlin Liu , Yong Liu , Chengjie Wang , Feng Zheng

Class-Incremental Learning (CIL) aims to continuously acquire new categories while preserving previously learned knowledge. Recently, Contrastive Language-Image Pre-trained (CLIP) models have shown strong potential for CIL due to their…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Tianqi Wang , Jingcai Guo

Class-Incremental Learning (CIL) aims to build classification models from data streams. At each step of the CIL process, new classes must be integrated into the model. Due to catastrophic forgetting, CIL is particularly challenging when…

Machine Learning · Computer Science 2023-09-28 Grégoire Petit , Michael Soumm , Eva Feillet , Adrian Popescu , Bertrand Delezoide , David Picard , Céline Hudelot

Exemplar-free class-incremental learning (EFCIL) aims to mitigate catastrophic forgetting in class-incremental learning (CIL) without available historical training samples as exemplars. Compared with its exemplar-based CIL counterpart that…

Machine Learning · Computer Science 2025-12-18 Run He , Di Fang , Yizhu Chen , Kai Tong , Cen Chen , Yi Wang , Lap-pui Chau , Huiping Zhuang

Due to the model aging problem, Deep Neural Networks (DNNs) need updates to adjust them to new data distributions. The common practice leverages incremental learning (IL), e.g., Class-based Incremental Learning (CIL) that updates output…

Machine Learning · Computer Science 2023-04-11 Xuanqi Gao , Juan Zhai , Shiqing Ma , Chao Shen , Yufei Chen , Shiwei Wang

Class Incremental Learning (CIL) aims to handle the scenario where data of novel classes occur continuously and sequentially. The model should recognize the sequential novel classes while alleviating the catastrophic forgetting. In the…

Computer Vision and Pattern Recognition · Computer Science 2023-11-16 Xiaoshuang Chen , Zhongyi Sun , Ke Yan , Shouhong Ding , Hongtao Lu

Aiming to incrementally learn new classes with only few samples while preserving the knowledge of base (old) classes, few-shot class-incremental learning (FSCIL) faces several challenges, such as overfitting and catastrophic forgetting.…

Computer Vision and Pattern Recognition · Computer Science 2024-10-10 Junghun Oh , Sungyong Baik , Kyoung Mu Lee

Deep Neural Network (DNN) has achieved great success on datasets of closed class set. However, new classes, like new categories of social media topics, are continuously added to the real world, making it necessary to incrementally learn.…

Computer Vision and Pattern Recognition · Computer Science 2023-08-07 Wenzhuo Liu , Xinjian Wu , Fei Zhu , Mingming Yu , Chuang Wang , Cheng-Lin Liu

Exemplar-based class-incremental learning (CIL) finetunes the model with all samples of new classes but few-shot exemplars of old classes in each incremental phase, where the "few-shot" abides by the limited memory budget. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2023-04-11 Zilin Luo , Yaoyao Liu , Bernt Schiele , Qianru Sun

Class-incremental learning (CIL) in medical image-guided diagnosis requires retaining prior diagnostic knowledge while adapting to newly emerging disease categories, which is critical for scalable clinical deployment. This problem is…

Computer Vision and Pattern Recognition · Computer Science 2026-03-26 Xinyao Wu , Zhe Xu , Cheng Chen , Jiawei Ma , Yefeng Zheng , Raymond Kai-yu Tong

Continual learning aims to acquire new knowledge while retaining past information. Class-incremental learning (CIL) presents a challenging scenario where classes are introduced sequentially. For video data, the task becomes more complex…

Computer Vision and Pattern Recognition · Computer Science 2025-01-14 Tieyuan Chen , Huabin Liu , Chern Hong Lim , John See , Xing Gao , Junhui Hou , Weiyao Lin

In class incremental learning (CIL) a model must learn new classes in a sequential manner without forgetting old ones. However, conventional CIL methods consider a balanced distribution for each new task, which ignores the prevalence of…

Computer Vision and Pattern Recognition · Computer Science 2022-10-04 Xialei Liu , Yu-Song Hu , Xu-Sheng Cao , Andrew D. Bagdanov , Ke Li , Ming-Ming Cheng

The main purpose of incremental learning is to learn new knowledge while not forgetting the knowledge which have been learned before. At present, the main challenge in this area is the catastrophe forgetting, namely the network will lose…

Machine Learning · Computer Science 2019-06-13 Qiuyu Zhu , Zikuang He , Xin Ye

Partial label learning is a prominent weakly supervised classification task, where each training instance is ambiguously labeled with a set of candidate labels. In real-world scenarios, candidate labels are often influenced by instance…

Computer Vision and Pattern Recognition · Computer Science 2026-03-06 Rui Zhao , Bin Shi , Kai Sun , Bo Dong

Class-Incremental Learning (CIL) requires a learning system to continually learn new classes without forgetting. Despite the strong performance of Pre-Trained Models (PTMs) in CIL, a critical issue persists: learning new classes often…

Computer Vision and Pattern Recognition · Computer Science 2024-03-19 Da-Wei Zhou , Hai-Long Sun , Han-Jia Ye , De-Chuan Zhan

Incremental Learning (IL) aims to accumulate knowledge from sequential input tasks while overcoming catastrophic forgetting. Existing IL methods typically assume that an incoming task has only increments of classes or domains, referred to…

Computer Vision and Pattern Recognition · Computer Science 2024-09-18 Min-Yeong Park , Jae-Ho Lee , Gyeong-Moon Park

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

Real-world applications require the classification model to adapt to new classes without forgetting old ones. Correspondingly, Class-Incremental Learning (CIL) aims to train a model with limited memory size to meet this requirement. Typical…

Machine Learning · Computer Science 2023-02-17 Da-Wei Zhou , Qi-Wei Wang , Han-Jia Ye , De-Chuan Zhan