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Class distribution plays an important role in learning deep classifiers. When the proportion of each class in the test set differs from the training set, the performance of classification nets usually degrades. Such a label distribution…

图像与视频处理 · 电气工程与系统科学 2022-07-12 Wenao Ma , Cheng Chen , Shuang Zheng , Jing Qin , Huimao Zhang , Qi Dou

We study the well-motivated problem of online distribution shift in which the data arrive in batches and the distribution of each batch can change arbitrarily over time. Since the shifts can be large or small, abrupt or gradual, the length…

机器学习 · 计算机科学 2025-04-11 Dheeraj Baby , Boran Han , Shuai Zhang , Cuixiong Hu , Yuyang Wang , Yu-Xiang Wang

Feature evolvable learning has been widely studied in recent years where old features will vanish and new features will emerge when learning with streams. Conventional methods usually assume that a label will be revealed after prediction at…

机器学习 · 计算机科学 2021-02-24 Bo-Jian Hou , Yu-Hu Yan , Peng Zhao , Zhi-Hua Zhou

Popular zero-shot models suffer due to artifacts inherited from pretraining. One particularly detrimental issue, caused by unbalanced web-scale pretraining data, is mismatched label distribution. Existing approaches that seek to repair the…

机器学习 · 计算机科学 2024-10-31 Changho Shin , Jitian Zhao , Sonia Cromp , Harit Vishwakarma , Frederic Sala

Real-world data sets often exhibit temporal dynamics characterized by evolving data distributions. Disregarding this phenomenon, commonly referred to as concept drift, can significantly diminish a model's predictive accuracy. Furthermore,…

机器学习 · 计算机科学 2025-12-16 Mohammad Abu Shaira , Yunhe Feng , Heng Fan , Weishi Shi

Models trained with offline data often suffer from continual distribution shifts and expensive labeling in changing environments. This calls for a new online learning paradigm where the learner can continually adapt to changing environments…

机器学习 · 计算机科学 2022-03-22 Shiji Zhou , Han Zhao , Shanghang Zhang , Lianzhe Wang , Heng Chang , Zhi Wang , Wenwu Zhu

In many real-world applications, researchers aim to deploy models trained in a source domain to a target domain, where obtaining labeled data is often expensive, time-consuming, or even infeasible. While most existing literature assumes…

统计方法学 · 统计学 2025-08-26 Seong-ho Lee , Yanyuan Ma , Jiwei Zhao

We revisit the common practice of evaluating adaptation of Online Continual Learning (OCL) algorithms through the metric of online accuracy, which measures the accuracy of the model on the immediate next few samples. However, we show that…

机器学习 · 计算机科学 2023-05-17 Hasan Abed Al Kader Hammoud , Ameya Prabhu , Ser-Nam Lim , Philip H. S. Torr , Adel Bibi , Bernard Ghanem

With the development of generative artificial intelligence, new forgery methods are rapidly emerging. Social platforms are flooded with vast amounts of unlabeled synthetic data and authentic data, making it increasingly challenging to…

计算机视觉与模式识别 · 计算机科学 2025-05-20 Midou Guo , Qilin Yin , Wei Lu , Xiangyang Luo

We consider the problem of user-adaptive 3D gaze estimation. The performance of person-independent gaze estimation is limited due to interpersonal anatomical differences. Our goal is to provide a personalized gaze estimation model…

计算机视觉与模式识别 · 计算机科学 2024-06-17 Yong Wu , Yang Wang , Sanqing Qu , Zhijun Li , Guang Chen

Machine learning methods strive to acquire a robust model during the training process that can effectively generalize to test samples, even in the presence of distribution shifts. However, these methods often suffer from performance…

机器学习 · 计算机科学 2024-12-13 Jian Liang , Ran He , Tieniu Tan

Online continual learning, the process of training models on streaming data, has gained increasing attention in recent years. However, a critical aspect often overlooked is the label delay, where new data may not be labeled due to slow and…

机器学习 · 计算机科学 2024-04-29 Botos Csaba , Wenxuan Zhang , Matthias Müller , Ser-Nam Lim , Mohamed Elhoseiny , Philip Torr , Adel Bibi

Multi-label data stream usually contains noisy labels in the real-world applications, namely occuring in both relevant and irrelevant labels. However, existing online multi-label classification methods are mostly limited in terms of label…

机器学习 · 计算机科学 2024-10-04 Yizhang Zou , Xuegang Hu , Peipei Li , Jun Hu , You Wu

Online machine learning systems need to adapt to domain shifts. Meanwhile, acquiring label at every timestep is expensive. We propose a surprisingly simple algorithm that adaptively balances its regret and its number of label queries in…

机器学习 · 计算机科学 2021-03-01 Yining Chen , Haipeng Luo , Tengyu Ma , Chicheng Zhang

Distributed and federated learning are important tools for high-dimensional classification of large datasets. To reduce computational costs and overcome the curse of dimensionality, feature screening plays a pivotal role in eliminating…

机器学习 · 统计学 2025-06-03 Qi Qin , Erbo Li , Xingxiang Li , Yifan Sun , Wu Wang , Chen Xu

A self-adaptive system can modify its own structure and behavior at runtime based on its perception of the environment, of itself and of its requirements. To develop a self-adaptive system, software developers codify knowledge about the…

软件工程 · 计算机科学 2022-10-13 Andreas Metzger , Clément Quinton , Zoltán Ádám Mann , Luciano Baresi , Klaus Pohl

Out-of-distribution (OOD) detection, which aims to distinguish unknown classes from known classes, has received increasing attention recently. A main challenge within is the unavailable of samples from the unknown classes in the training…

计算机视觉与模式识别 · 计算机科学 2024-10-10 Mingle Xu , Jaehwan Lee , Sook Yoon , Dong Sun Park

Traditional feature selections need to know the feature space before learning, and online streaming feature selection (OSFS) is proposed to process streaming features on the fly. Existing methods divide features into relevance or…

机器学习 · 计算机科学 2023-03-01 RuiYang Xu , Di Wu , Xin Luo

Semi-supervised multi-label feature selection has recently been developed to solve the curse of dimensionality problem in high-dimensional multi-label data with certain samples missing labels. Although many efforts have been made, most…

机器学习 · 计算机科学 2025-10-10 Li Yang , Yanyong Huang , Dongjie Wang , Ke Li , Xiuwen Yi , Fengmao Lv , Tianrui Li

The loss function plays an important role in optimizing the performance of a learning system. A crucial aspect of the loss function is the assignment of sample weights within a mini-batch during loss computation. In the context of continual…

机器学习 · 计算机科学 2024-01-30 Hamed Hemati , Damian Borth