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This paper considers deep out-of-distribution active learning. In practice, fully trained neural networks interact randomly with out-of-distribution (OOD) inputs and map aberrant samples randomly within the model representation space. Since…

Machine Learning · Computer Science 2023-01-13 Ryan Benkert , Mohit Prabhushankar , Ghassan AlRegib

Using unlabeled data to regularize the machine learning models has demonstrated promise for improving safety and reliability in detecting out-of-distribution (OOD) data. Harnessing the power of unlabeled in-the-wild data is non-trivial due…

Machine Learning · Computer Science 2024-02-07 Xuefeng Du , Zhen Fang , Ilias Diakonikolas , Yixuan Li

Pathology image classification plays a crucial role in accurate medical diagnosis and treatment planning. Training high-performance models for this task typically requires large-scale annotated datasets, which are both expensive and…

Computer Vision and Pattern Recognition · Computer Science 2025-07-01 Lanfeng Zhong , Xin Liao , Shichuan Zhang , Shaoting Zhang , Guotai Wang

In the active learning paradigm, using an oracle to label data has always been a complex and expensive task, and with the emersion of large unlabeled data pools, it would be highly beneficial If we could achieve better results without…

Machine Learning · Computer Science 2025-08-12 Hadi Khorsand , Vahid Pourahmadi

Active learning (AL) algorithms aim to identify an optimal subset of data for annotation, such that deep neural networks (DNN) can achieve better performance when trained on this labeled subset. AL is especially impactful in industrial…

Computer Vision and Pattern Recognition · Computer Science 2021-11-29 Zeyad Ali Sami Emam , Hong-Min Chu , Ping-Yeh Chiang , Wojciech Czaja , Richard Leapman , Micah Goldblum , Tom Goldstein

In many applications, data is easy to acquire but expensive and time-consuming to label prominent examples include medical imaging and NLP. This disparity has only grown in recent years as our ability to collect data improves. Under these…

Machine Learning · Computer Science 2021-04-07 Jaya Krishna Mandivarapu , Blake Camp , Rolando Estrada

During recent years, active learning has evolved into a popular paradigm for utilizing user's feedback to improve accuracy of learning algorithms. Active learning works by selecting the most informative sample among unlabeled data and…

Machine Learning · Computer Science 2016-11-17 Alireza Ghasemi , Hamid R. Rabiee , Mohsen Fadaee , Mohammad T. Manzuri , Mohammad H. Rohban

While deep learning succeeds in a wide range of tasks, it highly depends on the massive collection of annotated data which is expensive and time-consuming. To lower the cost of data annotation, active learning has been proposed to…

Computer Vision and Pattern Recognition · Computer Science 2021-07-30 Siyu Huang , Tianyang Wang , Haoyi Xiong , Jun Huan , Dejing Dou

Pretraining neural networks with massive unlabeled datasets has become popular as it equips the deep models with a better prior to solve downstream tasks. However, this approach generally assumes that the downstream tasks have access to…

Sound · Computer Science 2024-02-19 Harlin Lee , Aaqib Saeed , Andrea L. Bertozzi

Active learning (AL) aims to enable training high performance classifiers with low annotation cost by predicting which subset of unlabelled instances would be most beneficial to label. The importance of AL has motivated extensive research,…

Machine Learning · Computer Science 2018-06-14 Kunkun Pang , Mingzhi Dong , Yang Wu , Timothy Hospedales

Active Learning aims to optimize performance while minimizing annotation costs by selecting the most informative samples from an unlabelled pool. Traditional uncertainty sampling often leads to sampling bias by choosing similar uncertain…

Machine Learning · Computer Science 2024-11-27 Tejaswi Kasarla , Abhishek Jha , Faye Tervoort , Rita Cucchiara , Pascal Mettes

Most prior work on active learning of classifiers has focused on sequentially selecting one unlabeled example at a time to be labeled in order to reduce the overall labeling effort. In many scenarios, however, it is desirable to label an…

Machine Learning · Computer Science 2012-07-03 Javad Azimi , Alan Fern , Xiaoli Zhang-Fern , Glencora Borradaile , Brent Heeringa

Online active learning is a paradigm in machine learning that aims to select the most informative data points to label from a data stream. The problem of minimizing the cost associated with collecting labeled observations has gained a lot…

Machine Learning · Statistics 2023-12-01 Davide Cacciarelli , Murat Kulahci

Active learning (AL) has emerged as a crucial methodology for minimizing labeling costs in deep learning by selecting the most valuable samples from a pool of unlabeled data for annotation. Traditional AL operates under a closed-set…

Machine Learning · Computer Science 2026-04-23 Zongyao Lyu , William J. Beksi

Pool-based active learning (AL) aims to optimize the annotation process (i.e., labeling) as the acquisition of annotations is often time-consuming and therefore expensive. For this purpose, an AL strategy queries annotations intelligently…

Machine Learning · Computer Science 2022-01-06 Marek Herde , Denis Huseljic , Bernhard Sick , Adrian Calma

Active learning (AL) is a human-and-model-in-the-loop paradigm that iteratively selects informative unlabeled data for human annotation, aiming to improve over random sampling. However, performing AL experiments with human annotations…

Machine Learning · Computer Science 2023-05-24 Katerina Margatina , Nikolaos Aletras

Active Learning (AL) has garnered significant interest across various application domains where labeling training data is costly. AL provides a framework that helps practitioners query informative samples for annotation by oracles…

Machine Learning · Computer Science 2025-12-16 Pouya Ahadi , Blair Winograd , Camille Zaug , Karunesh Arora , Lijun Wang , Kamran Paynabar

Deep learning models, including Convolutional Neural Networks (CNNs) and Vision Transformers (ViTs), have achieved state-of-the-art performance on various computer vision tasks such as object classification, detection, segmentation,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-22 Vipul Arya , S. H. Shabbeer Basha , Srikrishna U N , Sunainha Vijay , Snehasis Mukherjee

Active learning (AL) aims to optimize model training and reduce annotation costs by selecting the most informative samples for labeling. Typically, AL methods rely on the empirical distribution of labeled data to define the decision…

Computation and Language · Computer Science 2025-07-23 Hui Xiang , Jinqiao Shi , Ting Zhang , Xiaojie Zhao , Yong Liu , Yong Ma

Active learning (AL) is a widely used technique for optimizing data labeling in machine learning by iteratively selecting, labeling, and training on the most informative data. However, its integration with formal privacy-preserving methods,…

Machine Learning · Computer Science 2025-02-03 Kristian Schwethelm , Johannes Kaiser , Jonas Kuntzer , Mehmet Yigitsoy , Daniel Rueckert , Georgios Kaissis