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Training machine learning models for classification tasks often requires labeling numerous samples, which is costly and time-consuming, especially in time series analysis. This research investigates Active Learning (AL) strategies to reduce…

Machine Learning · Computer Science 2024-05-21 Shemonto Das

Temporal localization of driving actions plays a crucial role in advanced driver-assistance systems and naturalistic driving studies. However, this is a challenging task due to strict requirements for robustness, reliability and accurate…

Computer Vision and Pattern Recognition · Computer Science 2024-03-12 Tunc Alkanat , Erkut Akdag , Egor Bondarev , Peter H. N. De With

Active Learning (AL) has garnered significant interest across various application domains where labeling training data is costly. AL provides a framework that helps practitioners query informative samples for annotation by oracles…

Machine Learning · Computer Science 2025-12-16 Pouya Ahadi , Blair Winograd , Camille Zaug , Karunesh Arora , Lijun Wang , Kamran Paynabar

Unsupervised image clustering methods often introduce alternative objectives to indirectly train the model and are subject to faulty predictions and overconfident results. To overcome these challenges, the current research proposes an…

Computer Vision and Pattern Recognition · Computer Science 2021-03-30 Sungwon Park , Sungwon Han , Sundong Kim , Danu Kim , Sungkyu Park , Seunghoon Hong , Meeyoung Cha

Facial action unit (AU) detection is a fundamental block for objective facial expression analysis. Supervised learning approaches require a large amount of manual labeling which is costly. The limited labeled data are also not diverse in…

Computer Vision and Pattern Recognition · Computer Science 2024-03-19 Liupei Lu , Yufeng Yin , Yuming Gu , Yizhen Wu , Pratusha Prasad , Yajie Zhao , Mohammad Soleymani

In learning tasks with label noise, improving model robustness against overfitting is a pivotal challenge because the model eventually memorizes labels, including the noisy ones. Identifying the samples with noisy labels and preventing the…

Machine Learning · Computer Science 2023-09-28 Reihaneh Torkzadehmahani , Reza Nasirigerdeh , Daniel Rueckert , Georgios Kaissis

Active Learning (AL) aims to reduce the labeling burden by interactively selecting the most informative samples from a pool of unlabeled data. While there has been extensive research on improving AL query methods in recent years, some…

Computer Vision and Pattern Recognition · Computer Science 2023-11-06 Carsten T. Lüth , Till J. Bungert , Lukas Klein , Paul F. Jaeger

Spoken language understanding (SLU) datasets, like many other machine learning datasets, usually suffer from the label imbalance problem. Label imbalance usually causes the learned model to replicate similar biases at the output which…

Audio and Speech Processing · Electrical Eng. & Systems 2020-08-11 Leda Sarı , Mark Hasegawa-Johnson

Despite the remarkable performance of supervised medical image segmentation models, relying on a large amount of labeled data is impractical in real-world situations. Semi-supervised learning approaches aim to alleviate this challenge using…

Computer Vision and Pattern Recognition · Computer Science 2025-09-17 Yunyao Lu , Yihang Wu , Ahmad Chaddad , Tareef Daqqaq , Reem Kateb

The Facial Action Coding System (FACS) has been used by numerous studies to investigate the links between facial behavior and mental health. The laborious and costly process of FACS coding has motivated the development of machine learning…

Computer Vision and Pattern Recognition · Computer Science 2025-06-02 Evangelos Sariyanidi , Lisa Yankowitz , Robert T. Schultz , John D. Herrington , Birkan Tunc , Jeffrey Cohn

We demonstrate that learning procedures that rely on aggregated labels, e.g., label information distilled from noisy responses, enjoy robustness properties impossible without data cleaning. This robustness appears in several ways. In the…

Machine Learning · Statistics 2026-05-26 Chen Cheng , John Duchi

Obtaining annotations for complex computer vision tasks such as object detection is an expensive and time-intense endeavor involving a large number of human workers or expert opinions. Reducing the amount of annotations required while…

Computer Vision and Pattern Recognition · Computer Science 2023-10-03 Marius Schubert , Tobias Riedlinger , Karsten Kahl , Matthias Rottmann

Label noise poses an important challenge in machine learning, especially in deep learning, in which large models with high expressive power dominate the field. Models of that kind are prone to memorizing incorrect labels, thereby harming…

Machine Learning · Computer Science 2024-01-26 Julian Lienen , Eyke Hüllermeier

Modern systems that rely on Machine Learning (ML) for predictive modelling, may suffer from the cold-start problem: supervised models work well but, initially, there are no labels, which are costly or slow to obtain. This problem is even…

Machine Learning · Computer Science 2021-10-25 Ricardo Barata , Miguel Leite , Ricardo Pacheco , Marco O. P. Sampaio , João Tiago Ascensão , Pedro Bizarro

Precise detection of tiny objects in remote sensing imagery remains a significant challenge due to their limited visual information and frequent occurrence within scenes. This challenge is further exacerbated by the practical burden and…

Computer Vision and Pattern Recognition · Computer Science 2024-01-17 Haoran Zhu , Chang Xu , Wen Yang , Ruixiang Zhang , Yan Zhang , Gui-Song Xia

We address the Ambivalence/Hesitancy (A/H) Video Recognition Challenge at the 10th ABAW Competition (CVPR 2026). We propose a divergence-based multimodal fusion that explicitly measures cross-modal conflict between visual, audio, and…

Class-imbalanced graph node classification is a practical yet underexplored research problem. Although recent studies have attempted to address this issue, they typically assume clean and reliable labels when processing class-imbalanced…

Machine Learning · Computer Science 2025-07-28 Riting Xia , Rucong Wang , Yulin Liu , Anchen Li , Xueyan Liu , Yan Zhang

Facial Action Coding System consists of 44 action units (AUs) and more than 7000 combinations. Hidden Markov models (HMMs) classifier has been used successfully to recognize facial action units (AUs) and expressions due to its ability to…

Computer Vision and Pattern Recognition · Computer Science 2010-04-06 Mahmoud Khademi , Mohammad T. Manzuri-Shalmani , Mohammad H. Kiapour , Ali A. Kiaei

Training neural networks with one-hot target labels often results in overconfidence and overfitting. Label smoothing addresses this issue by perturbing the one-hot target labels by adding a uniform probability vector to create a regularized…

Computer Vision and Pattern Recognition · Computer Science 2025-09-09 Sachin Chhabra , Hemanth Venkateswara , Baoxin Li

While deep face recognition has benefited significantly from large-scale labeled data, current research is focused on leveraging unlabeled data to further boost performance, reducing the cost of human annotation. Prior work has mostly been…

Computer Vision and Pattern Recognition · Computer Science 2020-07-16 Aruni RoyChowdhury , Xiang Yu , Kihyuk Sohn , Erik Learned-Miller , Manmohan Chandraker