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Active learning is considered a viable solution to alleviate the contradiction between the high dependency of deep learning-based segmentation methods on annotated data and the expensive pixel-level annotation cost of medical images.…

Computer Vision and Pattern Recognition · Computer Science 2024-10-23 Jun Shi , Shulan Ruan , Ziqi Zhu , Minfan Zhao , Hong An , Xudong Xue , Bing Yan

Active learning aims to train a classifier as fast as possible with as few labels as possible. The core element in virtually any active learning strategy is the criterion that measures the usefulness of the unlabeled data based on which new…

Machine Learning · Statistics 2018-02-13 Yazhou Yang , Marco Loog

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

In this paper, we introduce an alternative approach to enhancing Multi-Agent Reinforcement Learning (MARL) through the integration of domain knowledge and attention-based policy mechanisms. Our methodology focuses on the incorporation of…

Machine Learning · Computer Science 2025-04-04 Andre R Kuroswiski , Annie S Wu , Angelo Passaro

We propose Cartography Active Learning (CAL), a novel Active Learning (AL) algorithm that exploits the behavior of the model on individual instances during training as a proxy to find the most informative instances for labeling. CAL is…

Computation and Language · Computer Science 2022-05-10 Mike Zhang , Barbara Plank

Active Learning (AL) addresses the high costs of collecting human annotations by strategically annotating the most informative samples. However, for subjective NLP tasks, incorporating a wide range of perspectives in the annotation process…

Computation and Language · Computer Science 2024-10-24 Michiel van der Meer , Neele Falk , Pradeep K. Murukannaiah , Enrico Liscio

Kernel-based machine learning regression algorithms (MLRAs) are potentially powerful methods for being implemented into operational biophysical variable retrieval schemes. However, they face difficulties in coping with large training…

Signal Processing · Electrical Eng. & Systems 2020-12-16 ochem Verrelst , Sara Dethier , Juan Pablo Rivera , Jordi Muñoz-Marí , Gustau Camps-Valls , José Moreno

Active learning (AL) is a prominent technique for reducing the annotation effort required for training machine learning models. Deep learning offers a solution for several essential obstacles to deploying AL in practice but introduces many…

Computation and Language · Computer Science 2022-05-10 Akim Tsvigun , Artem Shelmanov , Gleb Kuzmin , Leonid Sanochkin , Daniil Larionov , Gleb Gusev , Manvel Avetisian , Leonid Zhukov

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 (AL) for semantic segmentation is challenging due to heavy class imbalance and different ways of defining "sample" (pixels, areas, etc.), leaving the interpretation of the data distribution ambiguous. We propose…

Computer Vision and Pattern Recognition · Computer Science 2023-08-30 Amirsaeed Yazdani , Xuelu Li , Vishal Monga

Pool-based active learning (AL) is a promising technology for increasing data-efficiency of machine learning models. However, surveys show that performance of recent AL methods is very sensitive to the choice of dataset and training…

Machine Learning · Computer Science 2023-09-12 Tim Bakker , Herke van Hoof , Max Welling

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 is a machine learning approach for reducing the data labeling effort. Given a pool of unlabeled samples, it tries to select the most useful ones to label so that a model built from them can achieve the best possible…

Machine Learning · Computer Science 2020-03-31 Dongrui Wu

Active Learning (AL) promises to reduce annotation cost by prioritizing informative samples, yet its reliability is undermined when labels are noisy or when the data distribution shifts. In practice, annotators make mistakes, rare…

Machine Learning · Computer Science 2025-10-14 Atharv Goel , Sharat Agarwal , Saket Anand , Chetan Arora

Active learning (AL) is a machine learning (ML) approach that strategically selects the most informative samples for annotation during training, aiming to minimize annotation costs. This strategy not only reduces labeling expenses but also…

Machine Learning · Computer Science 2026-03-25 Cédric Jung , Shirin Salehi , Anke Schmeink

Active learning (AL) is an effective approach to select the most informative samples to label so as to reduce the annotation cost. Existing AL methods typically work under the closed-set assumption, i.e., all classes existing in the…

Computer Vision and Pattern Recognition · Computer Science 2023-07-12 Linhao Qu , Yingfan Ma , Zhiwei Yang , Manning Wang , Zhijian Song

Post-training with Reinforcement Learning (RL) has substantially improved reasoning in Large Language Models (LLMs) via test-time scaling. However, extending this paradigm to Multimodal LLMs (MLLMs) through verbose rationales yields limited…

Computation and Language · Computer Science 2026-02-16 Bangzheng Li , Jianmo Ni , Chen Qu , Ian Miao , Liu Yang , Xingyu Fu , Muhao Chen , Derek Zhiyuan Cheng

One of the biggest challenges that complicates applied supervised machine learning is the need for huge amounts of labeled data. Active Learning (AL) is a well-known standard method for efficiently obtaining labeled data by first labeling…

Machine Learning · Computer Science 2021-08-18 Julius Gonsior , Maik Thiele , Wolfgang Lehner

Active learning aims to improve the performance of task model by selecting the most informative samples with a limited budget. Unlike most recent works that focused on applying active learning for image classification, we propose an…

Computer Vision and Pattern Recognition · Computer Science 2022-04-12 Weiping Yu , Sijie Zhu , Taojiannan Yang , Chen Chen

Active learning (AL) seeks to reduce annotation costs by selecting the most informative samples for labeling, making it particularly valuable in resource-constrained settings. However, traditional evaluation methods, which focus solely on…

Machine Learning · Computer Science 2025-07-22 Julia Machnio , Mads Nielsen , Mostafa Mehdipour Ghazi