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Model learning from class imbalanced training data is a long-standing and significant challenge for machine learning. In particular, existing deep learning methods consider mostly either class balanced data or moderately imbalanced data in…

Computer Vision and Pattern Recognition · Computer Science 2018-05-01 Qi Dong , Shaogang Gong , Xiatian Zhu

Exemplar-based class-incremental learning is to recognize new classes while not forgetting old ones, whose samples can only be saved in limited memory. The ratio fluctuation of new samples to old exemplars, which is caused by the variation…

Computer Vision and Pattern Recognition · Computer Science 2022-02-22 Zhiheng Liu , Kai Zhu , Yang Cao

Few-shot class-incremental learning (FSCIL) aims at recognizing novel classes continually with limited novel class samples. A mainstream baseline for FSCIL is first to train the whole model in the base session, then freeze the feature…

Computer Vision and Pattern Recognition · Computer Science 2024-02-02 Li-Jun Zhao , Zhen-Duo Chen , Zi-Chao Zhang , Xin Luo , Xin-Shun Xu

Class-incremental learning (CIL) aims to train a classification model while the number of classes increases phase-by-phase. An inherent challenge of CIL is the stability-plasticity tradeoff, i.e., CIL models should keep stable to retain old…

Machine Learning · Computer Science 2023-06-30 Yaoyao Liu , Yingying Li , Bernt Schiele , Qianru Sun

Federated Learning (FL) enables collaborative model training among participants while guaranteeing the privacy of raw data. Mainstream FL methodologies overlook the dynamic nature of real-world data, particularly its tendency to grow in…

Machine Learning · Computer Science 2024-04-18 Zhiyuan Wu , Tianliu He , Sheng Sun , Yuwei Wang , Min Liu , Bo Gao , Xuefeng Jiang

Class-incremental learning (CIL) for endoscopic image analysis is crucial for real-world clinical applications, where diagnostic models should continuously adapt to evolving clinical data while retaining performance on previously learned…

Computer Vision and Pattern Recognition · Computer Science 2025-10-21 Bingrong Liu , Jun Shi , Yushan Zheng

Existing continual learning (CL) research regards catastrophic forgetting (CF) as almost the only challenge. This paper argues for another challenge in class-incremental learning (CIL), which we call cross-task class discrimination…

Machine Learning · Computer Science 2023-05-25 Yiduo Guo , Bing Liu , Dongyan Zhao

Deep neural networks (DNNS) excel at learning from static datasets but struggle with continual learning, where data arrives sequentially. Catastrophic forgetting, the phenomenon of forgetting previously learned knowledge, is a primary…

Computer Vision and Pattern Recognition · Computer Science 2025-03-04 S Balasubramanian , M Sai Subramaniam , Sai Sriram Talasu , Yedu Krishna P , Manepalli Pranav Phanindra Sai , Ravi Mukkamala , Darshan Gera

We tackle the problem of class incremental learning (CIL) in the realm of landcover classification from optical remote sensing (RS) images in this paper. The paradigm of CIL has recently gained much prominence given the fact that data are…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 S Divakar Bhat , Biplab Banerjee , Subhasis Chaudhuri , Avik Bhattacharya

Continual learning (CL) presents a fundamental challenge in training neural networks on sequential tasks without experiencing catastrophic forgetting. Traditionally, the dominant approach in CL has been gradient-based optimization, where…

Machine Learning · Computer Science 2025-04-03 Grzegorz Rypeść

Class-Incremental Learning (CIL) struggles with catastrophic forgetting when learning new knowledge, and Data-Free CIL (DFCIL) is even more challenging without access to the training data of previously learned classes. Though recent DFCIL…

Computer Vision and Pattern Recognition · Computer Science 2022-07-22 Qiankun Gao , Chen Zhao , Bernard Ghanem , Jian Zhang

Continual learning (CL) aims to train models that can learn a sequence of tasks without forgetting previously acquired knowledge. A core challenge in CL is balancing stability -- preserving performance on old tasks -- and plasticity --…

Machine Learning · Computer Science 2025-05-14 Zhenrong Liu , Janne M. J. Huttunen , Mikko Honkala

Class Incremental Learning (CIL) constitutes a pivotal subfield within continual learning, aimed at enabling models to progressively learn new classification tasks while retaining knowledge obtained from prior tasks. Although previous…

Machine Learning · Computer Science 2025-01-14 Jaeill Kim , Wonseok Lee , Moonjung Eo , Wonjong Rhee

Class-Incremental Learning (CIL) aims to learn new classes sequentially while retaining the knowledge of previously learned classes. Recently, pre-trained models (PTMs) combined with parameter-efficient fine-tuning (PEFT) have shown…

Computer Vision and Pattern Recognition · Computer Science 2025-06-02 Jiangpeng He , Zhihao Duan , Fengqing Zhu

Multi-task learning (MTL) has emerged as a promising approach for deploying deep learning models in real-life applications. Recent studies have proposed optimization-based learning paradigms to establish task-shared representations in MTL.…

Machine Learning · Computer Science 2025-03-12 Zhipeng Zhou , Liu Liu , Peilin Zhao , Wei Gong

Classification on long-tailed distributed data is a challenging problem, which suffers from serious class-imbalance and hence poor performance on tail classes with only a few samples. Owing to this paucity of samples, learning on the tail…

Computation and Language · Computer Science 2022-07-25 Taha ValizadehAslani , Yiwen Shi , Jing Wang , Ping Ren , Yi Zhang , Meng Hu , Liang Zhao , Hualou Liang

Continual learning (CL) is a fundamental topic in machine learning, where the goal is to train a model with continuously incoming data and tasks. Due to the memory limit, we cannot store all the historical data, and therefore confront the…

Machine Learning · Computer Science 2024-07-31 Weichen Lin , Jiaxiang Chen , Ruomin Huang , Hu Ding

Classifying pill categories from real-world images is crucial for various smart healthcare applications. Although existing approaches in image classification might achieve a good performance on fixed pill categories, they fail to handle…

Computer Vision and Pattern Recognition · Computer Science 2022-10-06 Trong-Tung Nguyen , Hieu H. Pham , Phi Le Nguyen , Thanh Hung Nguyen , Minh Do

Deep neural networks (DNNs) have been applied in class incremental learning, which aims to solve common real-world problems of learning new classes continually. One drawback of standard DNNs is that they are prone to catastrophic…

Computer Vision and Pattern Recognition · Computer Science 2019-11-19 Bowen Zhao , Xi Xiao , Guojun Gan , Bin Zhang , Shutao Xia

Incremental learning (IL) has received a lot of attention recently, however, the literature lacks a precise problem definition, proper evaluation settings, and metrics tailored specifically for the IL problem. One of the main objectives of…

Computer Vision and Pattern Recognition · Computer Science 2018-10-16 Arslan Chaudhry , Puneet K. Dokania , Thalaiyasingam Ajanthan , Philip H. S. Torr