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Active learning (AL) concerns itself with learning a model from as few labelled data as possible through actively and iteratively querying an oracle with selected unlabelled samples. In this paper, we focus on analyzing a popular type of AL…

Machine Learning · Computer Science 2019-12-03 Minjie Xu , Gary Kazantsev

Deep neural networks have reached high accuracy on object detection but their success hinges on large amounts of labeled data. To reduce the labels dependency, various active learning strategies have been proposed, typically based on the…

Computer Vision and Pattern Recognition · Computer Science 2021-11-30 Ismail Elezi , Zhiding Yu , Anima Anandkumar , Laura Leal-Taixe , Jose M. Alvarez

Active Learning (AL) aims to enhance the performance of deep models by selecting the most informative samples for annotation from a pool of unlabeled data. Despite impressive performance in closed-set settings, most AL methods fail in…

Computer Vision and Pattern Recognition · Computer Science 2023-12-22 Bardia Safaei , Vibashan VS , Celso M. de Melo , Vishal M. Patel

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

Active Learning has received significant attention in the field of machine learning for its potential in selecting the most informative samples for labeling, thereby reducing data annotation costs. However, we show that the reported lifts…

Machine Learning · Computer Science 2025-02-24 Thorben Werner , Johannes Burchert , Lars Schmidt-Thieme

To address the annotation burden in LiDAR-based 3D object detection, active learning (AL) methods offer a promising solution. However, traditional active learning approaches solely rely on a small amount of labeled data to train an initial…

Computer Vision and Pattern Recognition · Computer Science 2025-03-25 Zengran Wang , Yanan Zhang , Jiaxin Chen , Di Huang

Learning semantic segmentation requires pixel-wise annotations, which can be time-consuming and expensive. To reduce the annotation cost, we propose a superpixel-based active learning (AL) framework, which collects a dominant label per…

Computer Vision and Pattern Recognition · Computer Science 2023-08-22 Hoyoung Kim , Minhyeon Oh , Sehyun Hwang , Suha Kwak , Jungseul Ok

Active learning (AL) is a principled strategy to reduce annotation cost in data-hungry deep learning. However, existing AL algorithms focus almost exclusively on unimodal data, overlooking the substantial annotation burden in multimodal…

Machine Learning · Computer Science 2026-04-24 Jiancheng Zhang , Yinglun Zhu

Pre-trained vision-language models (VLMs) like CLIP have demonstrated impressive zero-shot performance on a wide range of downstream computer vision tasks. However, there still exists a considerable performance gap between these models and…

Computer Vision and Pattern Recognition · Computer Science 2024-10-30 Bardia Safaei , Vishal M. Patel

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

Which volume to annotate next is a challenging problem in building medical imaging datasets for deep learning. One of the promising methods to approach this question is active learning (AL). However, AL has been a hard nut to crack in terms…

Computer Vision and Pattern Recognition · Computer Science 2022-09-15 Vishwesh Nath , Dong Yang , Holger R. Roth , Daguang Xu

A recent line of research on automated speaking assessment (ASA) has benefited from self-supervised learning (SSL) representations, which capture rich acoustic and linguistic patterns in non-native speech without underlying assumptions of…

Audio and Speech Processing · Electrical Eng. & Systems 2025-09-23 Tien-Hong Lo , Szu-Yu Chen , Yao-Ting Sung , Berlin Chen

Active learning (AL) strategies aim to train high-performance models with minimal labeling efforts, only selecting the most informative instances for annotation. Current approaches to evaluating data informativeness predominantly focus on…

Computer Vision and Pattern Recognition · Computer Science 2026-01-23 Zhixuan Liang , Xingyu Zeng , Rui Zhao , Ping Luo

Active learning (AL) is for optimizing the selection of unlabeled data for annotation (labeling), aiming to enhance model performance while minimizing labeling effort. The key question in AL is which unlabeled data should be selected for…

Computer Vision and Pattern Recognition · Computer Science 2024-10-22 Yingrui Ji , Vijaya Sindhoori Kaza , Nishanth Artham , Tianyang Wang

Active learning (AL) is a learning paradigm where an active learner has to train a model (e.g., a classifier) which is in principal trained in a supervised way, but in AL it has to be done by means of a data set with initially unlabeled…

Machine Learning · Computer Science 2015-12-23 Adrian Calma , Tobias Reitmaier , Bernhard Sick , Paul Lukowicz , Mark Embrechts

Optical music recognition (OMR) aims to convert music notation into digital formats. One approach to tackle OMR is through a multi-stage pipeline, where the system first detects visual music notation elements in the image (object detection)…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Guang Yang , Muru Zhang , Lin Qiu , Yanming Wan , Noah A. Smith

Image segmentation is one of the most essential biomedical image processing problems for different imaging modalities, including microscopy and X-ray in the Internet-of-Medical-Things (IoMT) domain. However, annotating biomedical images is…

Computer Vision and Pattern Recognition · Computer Science 2021-01-25 Ziyuan Zhao , Zeng Zeng , Kaixin Xu , Cen Chen , Cuntai Guan

Labeling data can be an expensive task as it is usually performed manually by domain experts. This is cumbersome for deep learning, as it is dependent on large labeled datasets. Active learning (AL) is a paradigm that aims to reduce…

Computation and Language · Computer Science 2021-11-05 Pieter Floris Jacobs , Gideon Maillette de Buy Wenniger , Marco Wiering , Lambert Schomaker

Optical Music Recognition (OMR) aims to convert printed or handwritten music score images into editable symbolic representations. This paper presents an end-to-end OMR framework that combines residual bottleneck convolutions with…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Junwen Ma , Huhu Xue , Xingyuan Zhao , and Weicheng Fu

The scarcity of labelled data makes training Deep Neural Network (DNN) models in bioacoustic applications challenging. In typical bioacoustics applications, manually labelling the required amount of data can be prohibitively expensive. To…

Sound · Computer Science 2024-07-02 Md Mohaimenuzzaman , Christoph Bergmeir , Bernd Meyer