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Annotating the right set of data amongst all available data points is a key challenge in many machine learning applications. Batch active learning is a popular approach to address this, in which batches of unlabeled data points are selected…

Machine Learning · Statistics 2021-04-20 Amirata Ghorbani , James Zou , Andre Esteva

Active learning algorithms have become increasingly popular for training models with limited data. However, selecting data for annotation remains a challenging problem due to the limited information available on unseen data. To address this…

Computer Vision and Pattern Recognition · Computer Science 2023-07-26 Md Abdul Kadir , Hasan Md Tusfiqur Alam , Daniel Sonntag

Deep learning-based diagnostic models often suffer performance drops due to distribution shifts between training (source) and test (target) domains. Collecting and labeling sufficient target domain data for model retraining represents an…

Computer Vision and Pattern Recognition · Computer Science 2025-07-02 Yaofei Duan , Yuhao Huang , Xin Yang , Luyi Han , Xinyu Xie , Zhiyuan Zhu , Ping He , Ka-Hou Chan , Ligang Cui , Sio-Kei Im , Dong Ni , Tao Tan

Multi-label active learning is a hot topic in reducing the label cost by optimally choosing the most valuable instance to query its label from an oracle. In this paper, we consider the poolbased multi-label active learning under the…

Machine Learning · Computer Science 2015-08-05 Shao-Yuan Li , Yuan Jiang , Zhi-Hua Zhou

We present a lightweight annotation tool, the Data AnnotatoR Tool (DART), for the general task of labeling structured data with textual descriptions. The tool is implemented as an interactive application that reduces human efforts in…

Computation and Language · Computer Science 2020-12-02 Ernie Chang , Jeriah Caplinger , Alex Marin , Xiaoyu Shen , Vera Demberg

Recently, there has been a growing interest in research concerning document image analysis and recognition in photographic scenarios. However, the lack of labeled datasets for this emerging challenge poses a significant obstacle, as manual…

Computer Vision and Pattern Recognition · Computer Science 2023-06-13 Jiaxin Zhang , Bangdong Chen , Hiuyi Cheng , Fengjun Guo , Kai Ding , Lianwen Jin

In the field of domain adaptation, a trade-off exists between the model performance and the number of target domain annotations. Active learning, maximizing model performance with few informative labeled data, comes in handy for such a…

Computer Vision and Pattern Recognition · Computer Science 2022-07-19 Tsung-Han Wu , Yi-Syuan Liou , Shao-Ji Yuan , Hsin-Ying Lee , Tung-I Chen , Kuan-Chih Huang , Winston H. Hsu

Semantic segmentation of LiDAR point clouds is an important task in autonomous driving. However, training deep models via conventional supervised methods requires large datasets which are costly to label. It is critical to have…

Computer Vision and Pattern Recognition · Computer Science 2022-10-18 Minghua Liu , Yin Zhou , Charles R. Qi , Boqing Gong , Hao Su , Dragomir Anguelov

One of the key challenges in the battle against the Coronavirus (COVID-19) pandemic is to detect and quantify the severity of the disease in a timely manner. Computed tomographies (CT) of the lungs are effective for assessing the state of…

Image and Video Processing · Electrical Eng. & Systems 2020-07-15 Issam Laradji , Pau Rodriguez , Frederic Branchaud-Charron , Keegan Lensink , Parmida Atighehchian , William Parker , David Vazquez , Derek Nowrouzezahrai

Deep learning in the presence of noisy annotations has been studied extensively in classification, but much less in segmentation tasks. In this work, we study the learning dynamics of deep segmentation networks trained on…

Computer Vision and Pattern Recognition · Computer Science 2022-03-08 Sheng Liu , Kangning Liu , Weicheng Zhu , Yiqiu Shen , Carlos Fernandez-Granda

Interactive segmentation plays a crucial role in accelerating the annotation, particularly in domains requiring specialized expertise such as nuclear medicine. For example, annotating lesions in whole-body Positron Emission Tomography (PET)…

Image and Video Processing · Electrical Eng. & Systems 2024-04-03 Zdravko Marinov , Moon Kim , Jens Kleesiek , Rainer Stiefelhagen

Automated vehicles rely on an accurate and robust perception of the environment. Similarly to automated cars, highly automated trains require an environmental perception. Although there is a lot of research based on either camera or LiDAR…

Computer Vision and Pattern Recognition · Computer Science 2025-06-03 Florian Wulff , Bernd Schaeufele , Julian Pfeifer , Ilja Radusch

AI models rely on annotated data to learn pattern and perform prediction. Annotation is usually a labor-intensive step that require associating labels ranging from a simple classification label to more complex tasks such as object…

Computer Vision and Pattern Recognition · Computer Science 2025-09-05 Safouane El Ghazouali , Umberto Michelucci

LiDAR semantic segmentation plays a vital role in autonomous driving. Existing voxel-based methods for LiDAR semantic segmentation apply uniform partition to the 3D LiDAR point cloud to form a structured representation based on…

Computer Vision and Pattern Recognition · Computer Science 2025-06-03 Xuzhi Wang , Wei Feng , Lingdong Kong , Liang Wan

We have seen significant leapfrog advancement in machine learning in recent decades. The central idea of machine learnability lies on constructing learning algorithms that learn from good data. The availability of more data being made…

Computer Vision and Pattern Recognition · Computer Science 2020-08-07 Ng Hui Xian Lynnette , Henry Ng Siong Hock , Nguwi Yok Yen

Most existing perception systems rely on sensory data acquired from cameras, which perform poorly in low light and adverse weather conditions. To resolve this limitation, we have witnessed advanced LiDAR sensors become popular in perception…

Computer Vision and Pattern Recognition · Computer Science 2023-01-26 Aotian Wu , Pan He , Xiao Li , Ke Chen , Sanjay Ranka , Anand Rangarajan

Although weakly-supervised techniques can reduce the labeling effort, it is unclear whether a saliency model trained with weakly-supervised data (e.g., point annotation) can achieve the equivalent performance of its fully-supervised…

Computer Vision and Pattern Recognition · Computer Science 2022-12-14 Zhenyu Wu , Lin Wang , Wei Wang , Qing Xia , Chenglizhao Chen , Aimin Hao , Shuo Li

LiDAR odometry estimation and 3D semantic segmentation are crucial for autonomous driving, which has achieved remarkable advances recently. However, these tasks are challenging due to the imbalance of points in different semantic categories…

Computer Vision and Pattern Recognition · Computer Science 2024-06-18 Guanqun Ding , Nevrez Imamoglu , Ali Caglayan , Masahiro Murakawa , Ryosuke Nakamura

We propose an active learning approach to image segmentation that exploits geometric priors to speed up and streamline the annotation process. It can be applied for both background-foreground and multi-class segmentation tasks in 2D images…

Computer Vision and Pattern Recognition · Computer Science 2019-04-05 Ksenia Konyushkova , Raphael Sznitman , Pascal Fua

We present a novel active learning framework for 3D point cloud semantic segmentation that, for the first time, integrates large language models (LLMs) to construct hierarchical label structures and guide uncertainty-based sample selection.…

Computer Vision and Pattern Recognition · Computer Science 2025-06-04 Chenxi Li , Nuo Chen , Fengyun Tan , Yantong Chen , Bochun Yuan , Tianrui Li , Chongshou Li