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Active learning (AL), which iteratively queries the most informative examples from a large pool of unlabeled candidates for model training, faces significant challenges in the presence of open-set classes. Existing methods either prioritize…

计算机视觉与模式识别 · 计算机科学 2025-03-17 Chen-Chen Zong , Sheng-Jun Huang

The primary challenge of multi-label active learning, differing it from multi-class active learning, lies in assessing the informativeness of an indefinite number of labels while also accounting for the inherited label correlation. Existing…

机器学习 · 计算机科学 2025-09-05 Yuanyuan Qi , Jueqing Lu , Xiaohao Yang , Joanne Enticott , Lan Du

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…

机器学习 · 计算机科学 2020-03-31 Dongrui Wu

Positive-unlabeled (PU) learning aims to train a classifier using the data containing only labeled-positive instances and unlabeled instances. However, existing PU learning methods are generally hard to achieve satisfactory performance on…

机器学习 · 统计学 2024-06-03 Xiaoke Wang , Xiaochen Yang , Rui Zhu , Jing-Hao Xue

Clinical settings are often characterized by abundant unlabelled data and limited labelled data. This is typically driven by the high burden placed on oracles (e.g., physicians) to provide annotations. One way to mitigate this burden is via…

机器学习 · 计算机科学 2022-05-19 Dani Kiyasseh , Tingting Zhu , David A. Clifton

Pathology image classification plays a crucial role in accurate medical diagnosis and treatment planning. Training high-performance models for this task typically requires large-scale annotated datasets, which are both expensive and…

计算机视觉与模式识别 · 计算机科学 2025-07-01 Lanfeng Zhong , Xin Liao , Shichuan Zhang , Shaoting Zhang , Guotai Wang

Neural Network-based active learning (NAL) is a cost-effective data selection technique that utilizes neural networks to select and train on a small subset of samples. While existing work successfully develops various effective or…

机器学习 · 计算机科学 2024-06-07 Dake Bu , Wei Huang , Taiji Suzuki , Ji Cheng , Qingfu Zhang , Zhiqiang Xu , Hau-San Wong

This work introduces Dirichlet Active Learning (DiAL), a Bayesian-inspired approach to the design of active learning algorithms. Our framework models feature-conditional class probabilities as a Dirichlet random field and lends…

机器学习 · 统计学 2023-11-10 Kevin Miller , Ryan Murray

Active learning for classification seeks to reduce the cost of labeling samples by finding unlabeled examples about which the current model is least certain and sending them to an annotator/expert to label. Bayesian theory can provide a…

密码学与安全 · 计算机科学 2025-07-08 Ahmed Bensaoud , Jugal Kalita

Uncertainty Sampling is an Active Learning strategy that aims to improve the data efficiency of machine learning models by iteratively acquiring labels of data points with the highest uncertainty. While it has proven effective for…

Batch active learning (BAL) is a crucial technique for reducing labeling costs and improving data efficiency in training large-scale deep learning models. Traditional BAL methods often rely on metrics like Mahalanobis Distance to balance…

机器学习 · 计算机科学 2026-04-15 Guofeng Cui , Yang Liu , Pichao Wang , Hankai Hsu , Xiaohang Sun , Xiang Hao , Zhu Liu

Unsupervised active learning has attracted increasing attention in recent years, where its goal is to select representative samples in an unsupervised setting for human annotating. Most existing works are based on shallow linear models by…

机器学习 · 计算机科学 2020-07-29 Changsheng Li , Handong Ma , Zhao Kang , Ye Yuan , Xiao-Yu Zhang , Guoren Wang

We introduce Information Condensing Active Learning (ICAL), a batch mode model agnostic Active Learning (AL) method targeted at Deep Bayesian Active Learning that focuses on acquiring labels for points which have as much information as…

机器学习 · 计算机科学 2020-02-21 Siddhartha Jain , Ge Liu , David Gifford

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…

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…

计算与语言 · 计算机科学 2025-02-04 Jiaxin Guo , C. L. Philip Chen , Shuzhen Li , Tong Zhang

Active learning frameworks offer efficient data annotation without remarkable accuracy degradation. In other words, active learning starts training the model with a small size of labeled data while exploring the space of unlabeled data in…

机器学习 · 计算机科学 2022-04-22 Salman Mohamadi , Hamidreza Amindavar

Often, labeling large amount of data is challenging due to high labeling cost limiting the application domain of deep learning techniques. Active learning (AL) tackles this by querying the most informative samples to be annotated among…

机器学习 · 计算机科学 2020-12-09 Kwanyoung Kim , Dongwon Park , Kwang In Kim , Se Young Chun

Deep learning models frequently encounter feature uncertainty in diverse learning scenarios, significantly impacting their performance and reliability. This challenge is particularly complex in multi-modal scenarios, where models must…

机器学习 · 计算机科学 2025-06-05 Jiahao Qin , Bei Peng , Feng Liu , Guangliang Cheng , Lu Zong

As deep learning continues to evolve, the need for data efficiency becomes increasingly important. Considering labeling large datasets is both time-consuming and expensive, active learning (AL) provides a promising solution to this…

机器学习 · 计算机科学 2025-05-21 Yifeng Wang , Xueying Zhan , Siyu Huang

Active learning aims to alleviate the amount of labor involved in data labeling by automating the selection of unlabeled samples via an acquisition function. For example, variational adversarial active learning (VAAL) leverages an…

机器学习 · 计算机科学 2024-08-26 Zongyao Lyu , William J. Beksi