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Deep Active Learning (DAL) has been advocated as a promising method to reduce labeling costs in supervised learning. However, existing evaluations of DAL methods are based on different settings, and their results are controversial. To…

Computer Vision and Pattern Recognition · Computer Science 2022-12-07 Yu Li , Muxi Chen , Yannan Liu , Daojing He , Qiang Xu

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

Convolutional Neural Networks (CNNs) have proven to be state-of-the-art models for supervised computer vision tasks, such as image classification. However, large labeled data sets are generally needed for the training and validation of such…

Machine Learning · Computer Science 2020-10-28 Patrick Hemmer , Niklas Kühl , Jakob Schöffer

Cold-start active learning (CSAL) selects valuable instances from an unlabeled dataset for manual annotation. It provides high-quality data at a low annotation cost for label-scarce text classification. However, existing CSAL methods…

Computation and Language · Computer Science 2025-02-04 Jiaxin Guo , C. L. Philip Chen , Shuzhen Li , Tong Zhang

We propose LiDAL, a novel active learning method for 3D LiDAR semantic segmentation by exploiting inter-frame uncertainty among LiDAR frames. Our core idea is that a well-trained model should generate robust results irrespective of…

Computer Vision and Pattern Recognition · Computer Science 2022-11-14 Zeyu Hu , Xuyang Bai , Runze Zhang , Xin Wang , Guangyuan Sun , Hongbo Fu , Chiew-Lan Tai

In recent years, deep learning has become a breakthrough technique in assisting medical image diagnosis. Supervised learning using convolutional neural networks (CNN) provides state-of-the-art performance and has served as a benchmark for…

Image and Video Processing · Electrical Eng. & Systems 2023-06-30 Tao Wang , Xinlin Zhang , Yuanbo Zhou , Junlin Lan , Tao Tan , Min Du , Qinquan Gao , Tong Tong

Deep predictive models rely on human supervision in the form of labeled training data. Obtaining large amounts of annotated training data can be expensive and time consuming, and this becomes a critical bottleneck while building such models…

Machine Learning · Statistics 2020-10-01 Bindya Venkatesh , Jayaraman J. Thiagarajan

We present an uncertainty learning framework for dense neural simultaneous localization and mapping (SLAM). Estimating pixel-wise uncertainties for the depth input of dense SLAM methods allows re-weighing the tracking and mapping losses…

Computer Vision and Pattern Recognition · Computer Science 2023-09-07 Erik Sandström , Kevin Ta , Luc Van Gool , Martin R. Oswald

Recent successes in learning-based image classification, however, heavily rely on the large number of annotated training samples, which may require considerable human efforts. In this paper, we propose a novel active learning framework,…

Computer Vision and Pattern Recognition · Computer Science 2017-01-16 Keze Wang , Dongyu Zhang , Ya Li , Ruimao Zhang , Liang Lin

Deep learning approaches achieve state-of-the-art performance for classifying radiology images, but rely on large labelled datasets that require resource-intensive annotation by specialists. Both semi-supervised learning and active learning…

Computer Vision and Pattern Recognition · Computer Science 2022-09-07 Shafa Balaram , Cuong M. Nguyen , Ashraf Kassim , Pavitra Krishnaswamy

Despite the success of deep learning on supervised point cloud semantic segmentation, obtaining large-scale point-by-point manual annotations is still a significant challenge. To reduce the huge annotation burden, we propose a Region-based…

Computer Vision and Pattern Recognition · Computer Science 2022-06-10 Tsung-Han Wu , Yueh-Cheng Liu , Yu-Kai Huang , Hsin-Ying Lee , Hung-Ting Su , Ping-Chia Huang , Winston H. Hsu

Detecting changes in longitudinal medical imaging using deep learning requires a substantial amount of accurately labeled data. However, labeling these images is notably more costly and time-consuming than labeling other image types, as it…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Siteng Ma , Honghui Du , Prateek Mathur , Brendan S. Kelly , Ronan P. Killeen , Aonghus Lawlor , Ruihai Dong

The great success that deep models have achieved in the past is mainly owed to large amounts of labeled training data. However, the acquisition of labeled data for new tasks aside from existing benchmarks is both challenging and costly.…

Computer Vision and Pattern Recognition · Computer Science 2018-09-27 Clemens-Alexander Brust , Christoph Käding , Joachim Denzler

State-of-the-art methods for semantic segmentation are based on deep neural networks trained on large-scale labeled datasets. Acquiring such datasets would incur large annotation costs, especially for dense pixel-level prediction tasks like…

Computer Vision and Pattern Recognition · Computer Science 2025-07-24 Lile Cai , Xun Xu , Lining Zhang , Chuan-Sheng Foo

Deep learning methods typically depend on the availability of labeled data, which is expensive and time-consuming to obtain. Active learning addresses such effort by prioritizing which samples are best to annotate in order to maximize the…

Computer Vision and Pattern Recognition · Computer Science 2023-01-18 Mélanie Gaillochet , Christian Desrosiers , Hervé Lombaert

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

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

Medical image analysis requires substantial labeled data for model training, yet expert annotation is expensive and time-consuming. Active learning (AL) addresses this challenge by strategically selecting the most informative samples for…

Image and Video Processing · Electrical Eng. & Systems 2026-03-06 Ifrat Ikhtear Uddin , Longwei Wang , Xiao Qin , Yang Zhou , KC Santosh

Conventional machine learning systems that operate on natural images assume the presence of attributes within the images that lead to some decision. However, decisions in medical domain are a resultant of attributes within medical…

Image and Video Processing · Electrical Eng. & Systems 2022-06-28 Yash-yee Logan , Mohit Prabhushankar , Ghassan AlRegib

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
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