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Active learning allows machine learning models to be trained using fewer labels while retaining similar performance to traditional supervised learning. An active learner selects the most informative data points, requests their labels, and…

Machine Learning · Computer Science 2023-11-22 Zac Pullar-Strecker , Katharina Dost , Eibe Frank , Jörg Wicker

Machine learning models deployed in open-world scenarios often encounter unfamiliar conditions and perform poorly in unanticipated situations. As AI systems advance and find application in safety-critical domains, effectively handling…

Machine Learning · Computer Science 2025-04-22 Tian Xie , Jifan Zhang , Haoyue Bai , Robert Nowak

Unlabelled data appear in many domains and are particularly relevant to streaming applications, where even though data is abundant, labelled data is rare. To address the learning problems associated with such data, one can ignore the…

Machine Learning · Computer Science 2021-06-18 Heitor Murilo Gomes , Maciej Grzenda , Rodrigo Mello , Jesse Read , Minh Huong Le Nguyen , Albert Bifet

Discriminative learning machines often need a large set of labeled samples for training. Active learning (AL) settings assume that the learner has the freedom to ask an oracle to label its desired samples. Traditional AL algorithms…

Machine Learning · Statistics 2018-05-24 Arash Mehrjou , Mehran Khodabandeh , Greg Mori

Active learning strives to reduce the need for costly data annotation, by repeatedly querying an annotator to label the most informative samples from a pool of unlabeled data, and then training a model from these samples. We identify two…

Computer Vision and Pattern Recognition · Computer Science 2024-03-14 Jiarong Wei , Yancong Lin , Holger Caesar

Pseudo-labeling has proven to be a promising semi-supervised learning (SSL) paradigm. Existing pseudo-labeling methods commonly assume that the class distributions of training data are balanced. However, such an assumption is far from…

Machine Learning · Computer Science 2023-03-03 Renzhen Wang , Xixi Jia , Quanziang Wang , Yichen Wu , Deyu Meng

Deep learning models for natural language processing rely heavily on high-quality labeled datasets. However, existing labeling approaches often struggle to balance label quality with labeling cost. To address this challenge, we propose…

Human-Computer Interaction · Computer Science 2026-02-17 Guozheng Li , Ao Wang , Shaoxiang Wang , Yu Zhang , Pengcheng Cao , Yang Bai , Chi Harold Liu

Gathering training data is a key step of any supervised learning task, and it is both critical and expensive. Critical, because the quantity and quality of the training data has a high impact on the performance of the learned function.…

Data Structures and Algorithms · Computer Science 2021-10-28 Quentin Lutz , Élie de Panafieu , Alex Scott , Maya Stein

Pretraining neural networks with massive unlabeled datasets has become popular as it equips the deep models with a better prior to solve downstream tasks. However, this approach generally assumes that the downstream tasks have access to…

Sound · Computer Science 2024-02-19 Harlin Lee , Aaqib Saeed , Andrea L. Bertozzi

Semi-supervised learning (SSL) algorithms struggle to perform well when exposed to imbalanced training data. In this scenario, the generated pseudo-labels can exhibit a bias towards the majority class, and models that employ these…

Machine Learning · Computer Science 2024-09-18 Zeju Li , Ying-Qiu Zheng , Chen Chen , Saad Jbabdi

Modern computing and communication technologies can make data collection procedures very efficient. However, our ability to analyze large data sets and/or to extract information out from them is hard-pressed to keep up with our capacities…

Machine Learning · Statistics 2019-01-30 Zhanfeng Wang , Yumi Kwon , Yuan-chin Ivan Chang

Gaining the ability to make informed decisions on operation and maintenance of structures provides motivation for the implementation of structural health monitoring (SHM) systems. However, descriptive labels for measured data corresponding…

Machine Learning · Computer Science 2022-06-24 Aidan J. Hughes , Paul Gardner , Lawrence A. Bull , Nikolaos Dervilis , Keith Worden

Conventional multimedia annotation/retrieval systems such as Normalized Continuous Relevance Model (NormCRM) [16] require a fully labeled training data for a good performance. Active Learning, by determining an order for labeling the…

Multimedia · Computer Science 2015-04-28 Moitreya Chatterjee , Anton Leuski

Active learning is the set of techniques for intelligently labeling large unlabeled datasets to reduce the labeling effort. In parallel, recent developments in self-supervised and semi-supervised learning (S4L) provide powerful techniques,…

Machine Learning · Computer Science 2020-11-17 Yao-Chun Chan , Mingchen Li , Samet Oymak

Learning and understanding the typical patterns in the daily activities and routines of people from low-level sensory data is an important problem in many application domains such as building smart environments, or providing intelligent…

Machine Learning · Computer Science 2014-08-14 Truyen Tran , Hung Bui , Svetha Venkatesh

Semi-Supervised Learning (SSL) can leverage abundant unlabeled data to boost model performance. However, the class-imbalanced data distribution in real-world scenarios poses great challenges to SSL, resulting in performance degradation.…

Computer Vision and Pattern Recognition · Computer Science 2025-01-13 Yin Wang , Zixuan Wang , Hao Lu , Zhen Qin , Hailiang Zhao , Guanjie Cheng , Ge Su , Li Kuang , Mengchu Zhou , Shuiguang Deng

Active learning is to design label-efficient algorithms by sampling the most representative samples to be labeled by an oracle. In this paper, we propose a state relabeling adversarial active learning model (SRAAL), that leverages both the…

Computer Vision and Pattern Recognition · Computer Science 2020-04-13 Beichen Zhang , Liang Li , Shijie Yang , Shuhui Wang , Zheng-Jun Zha , Qingming Huang

While deep learning is a powerful tool for natural language processing (NLP) problems, successful solutions to these problems rely heavily on large amounts of annotated samples. However, manually annotating data is expensive and…

Computation and Language · Computer Science 2021-04-06 Rishi Hazra , Parag Dutta , Shubham Gupta , Mohammed Abdul Qaathir , Ambedkar Dukkipati

Dataset bias is one of the prevailing causes of unfairness in machine learning. Addressing fairness at the data collection and dataset preparation stages therefore becomes an essential part of training fairer algorithms. In particular,…

Machine Learning · Computer Science 2021-04-15 Frédéric Branchaud-Charron , Parmida Atighehchian , Pau Rodríguez , Grace Abuhamad , Alexandre Lacoste

While deep learning is a powerful tool for natural language processing (NLP) problems, successful solutions to these problems rely heavily on large amounts of annotated samples. However, manually annotating data is expensive and…

Machine Learning · Computer Science 2021-04-08 Rishi Hazra , Parag Dutta , Shubham Gupta , Mohammed Abdul Qaathir , Ambedkar Dukkipati