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Many active learning and search approaches are intractable for large-scale industrial settings with billions of unlabeled examples. Existing approaches search globally for the optimal examples to label, scaling linearly or even…

Optimal design for model training is a critical topic in machine learning. Active Learning aims at obtaining improved models by querying samples with maximum uncertainty according to the estimation model for artificially labeling; this has…

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

Even though Active Learning (AL) is widely studied, it is rarely applied in contexts outside its own scientific literature. We posit that the reason for this is AL's high computational cost coupled with the comparatively small lifts it is…

Machine Learning · Computer Science 2025-08-04 Thorben Werner , Lars Schmidt-Thieme , Vijaya Krishna Yalavarthi

Active learning is a machine learning paradigm that aims to improve the performance of a model by strategically selecting and querying unlabeled data. One effective selection strategy is to base it on the model's predictive uncertainty,…

Machine Learning · Computer Science 2024-05-17 Seong Jin Cho , Gwangsu Kim , Junghyun Lee , Jinwoo Shin , Chang D. Yoo

The aim of Active Learning is to select the most informative samples from an unlabelled set of data. This is useful in cases where the amount of data is large and labelling is expensive, such as in machine vision or medical imaging. Two…

Computer Vision and Pattern Recognition · Computer Science 2026-01-13 Julien Combes , Alexandre Derville , Jean-François Coeurjolly

The analysis of tabular datasets is highly prevalent both in scientific research and real-world applications of Machine Learning (ML). Unlike many other ML tasks, Deep Learning (DL) models often do not outperform traditional methods in this…

Machine Learning · Computer Science 2024-08-28 Assaf Shmuel , Oren Glickman , Teddy Lazebnik

Consider a sequential active learning problem where, at each round, an agent selects a batch of unlabeled data points, queries their labels and updates a binary classifier. While there exists a rich body of work on active learning in this…

Machine Learning · Computer Science 2020-05-26 Abbas Kazerouni , Qi Zhao , Jing Xie , Sandeep Tata , Marc Najork

One of the major challenges in training deep architectures for predictive tasks is the scarcity and cost of labeled training data. Active Learning (AL) is one way of addressing this challenge. In stream-based AL, observations are…

Machine Learning · Computer Science 2019-09-05 Andreas Kvistad , Massimiliano Ruocco , Eliezer de Souza da Silva , Erlend Aune

Deep learning has achieved widespread success in medical image analysis, leading to an increasing demand for large-scale expert-annotated medical image datasets. Yet, the high cost of annotating medical images severely hampers the…

Computer Vision and Pattern Recognition · Computer Science 2024-03-14 Haoran Wang , Qiuye Jin , Shiman Li , Siyu Liu , Manning Wang , Zhijian Song

Online Active Learning (OAL) aims to manage unlabeled datastream by selectively querying the label of data. OAL is applicable to many real-world problems, such as anomaly detection in health-care and finance. In these problems, there are…

Machine Learning · Computer Science 2019-11-19 Yifan Zhang , Peilin Zhao , Shuaicheng Niu , Qingyao Wu , Jiezhang Cao , Junzhou Huang , Mingkui Tan

While training models and labeling data are resource-intensive, a wealth of pre-trained models and unlabeled data exists. To effectively utilize these resources, we present an approach to actively select pre-trained models while minimizing…

Machine Learning · Computer Science 2025-02-11 Xuefeng Liu , Fangfang Xia , Rick L. Stevens , Yuxin Chen

Using deep learning, we now have the ability to create exceptionally good semantic segmentation systems; however, collecting the prerequisite pixel-wise annotations for training images remains expensive and time-consuming. Therefore, it…

Computer Vision and Pattern Recognition · Computer Science 2022-10-19 Aneesh Rangnekar , Christopher Kanan , Matthew Hoffman

Label efficiency has become an increasingly important objective in deep learning applications. Active learning aims to reduce the number of labeled examples needed to train deep networks, but the empirical performance of active learning…

Machine Learning · Computer Science 2023-12-19 Jifan Zhang , Shuai Shao , Saurabh Verma , Robert Nowak

Active Learning (AL) and Few Shot Learning (FSL) are two label-efficient methods which have achieved excellent results recently. However, most prior arts in both learning paradigms fail to explore the wealth of the vast unlabelled data. In…

Computer Vision and Pattern Recognition · Computer Science 2024-04-26 Nico Schiavone , Jingyi Wang , Shuangzhi Li , Roger Zemp , Xingyu Li

The task of determining labels of all network nodes based on the knowledge about network structure and labels of some training subset of nodes is called the within-network classification. It may happen that none of the labels of the nodes…

Machine Learning · Statistics 2015-10-06 Tomasz Kajdanowicz , Radosław Michalski , Katarzyna Musiał , Przemysław Kazienko

In many industrial applications, obtaining labeled observations is not straightforward as it often requires the intervention of human experts or the use of expensive testing equipment. In these circumstances, active learning can be highly…

Machine Learning · Statistics 2023-07-19 Davide Cacciarelli , Murat Kulahci , John Sølve Tyssedal

Wildlife camera trap images are being used extensively to investigate animal abundance, habitat associations, and behavior, which is complicated by the fact that experts must first classify the images manually. Artificial intelligence…

Computer Vision and Pattern Recognition · Computer Science 2023-08-03 Ludwig Bothmann , Lisa Wimmer , Omid Charrakh , Tobias Weber , Hendrik Edelhoff , Wibke Peters , Hien Nguyen , Caryl Benjamin , Annette Menzel

Active learning algorithms automatically identify the most informative samples from large amounts of unlabeled data and tremendously reduce human annotation effort in inducing a machine learning model. In a conventional active learning…

Machine Learning · Computer Science 2026-04-28 Varun Totakura , Ankita Singh , Yushun Dong , Shayok Chakraborty

Active Learning (AL) methods seek to improve classifier performance when labels are expensive or scarce. We consider two central questions: Where does AL work? How much does it help? To address these questions, a comprehensive experimental…

Machine Learning · Statistics 2014-08-07 Lewis Evans , Niall M. Adams , Christoforos Anagnostopoulos