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Active learning is a powerful tool when labelling data is expensive, but it introduces a bias because the training data no longer follows the population distribution. We formalize this bias and investigate the situations in which it can be…

机器学习 · 统计学 2021-06-01 Sebastian Farquhar , Yarin Gal , Tom Rainforth

Due to the privacy protection or the difficulty of data collection, we cannot observe individual outputs for each instance, but we can observe aggregated outputs that are summed over multiple instances in a set in some real-world…

机器学习 · 统计学 2022-10-05 Tomoharu Iwata

While training models and labeling data are resource-intensive, a wealth of pre-trained models and unlabeled data exists. To effectively utilize these resources, we present an approach to actively select pre-trained models while minimizing…

机器学习 · 计算机科学 2025-02-11 Xuefeng Liu , Fangfang Xia , Rick L. Stevens , Yuxin Chen

Active learning aims to select samples to be annotated that yield the largest performance improvement for the learning algorithm. Many methods approach this problem by measuring the informativeness of samples and do this based on the…

机器学习 · 计算机科学 2021-08-02 Javad Zolfaghari Bengar , Bogdan Raducanu , Joost van de Weijer

The available data in semi-supervised learning usually consists of relatively small sized labeled data and much larger sized unlabeled data. How to effectively exploit unlabeled data is the key issue. In this paper, we write the regression…

统计方法学 · 统计学 2024-11-13 Ziwen Gao , Huihang Liu , Xinyu Zhang

Semi-supervised learning leverages unlabeled data to enhance model performance, addressing the limitations of fully supervised approaches. Among its strategies, pseudo-supervision has proven highly effective, typically relying on one or…

计算机视觉与模式识别 · 计算机科学 2025-05-13 Negin Ghamsarian , Sahar Nasirihaghighi , Klaus Schoeffmann , Raphael Sznitman

Meta-learning algorithms for active learning are emerging as a promising paradigm for learning the ``best'' active learning strategy. However, current learning-based active learning approaches still require sufficient training data so as to…

机器学习 · 计算机科学 2019-09-10 Jingyu Shao , Qing Wang , Fangbing Liu

Classification algorithms aim to predict an unknown label (e.g., a quality class) for a new instance (e.g., a product). Therefore, training samples (instances and labels) are used to deduct classification hypotheses. Often, it is relatively…

机器学习 · 计算机科学 2019-01-30 Daniel Kottke , Jim Schellinger , Denis Huseljic , Bernhard Sick

The ability to train complex and highly effective models often requires an abundance of training data, which can easily become a bottleneck in cost, time, and computational resources. Batch active learning, which adaptively issues batched…

Active learning is of great interest for many practical applications, especially in industry and the physical sciences, where there is a strong need to minimize the number of costly experiments necessary to train predictive models. However,…

机器学习 · 计算机科学 2021-12-23 Maryam Pardakhti , Nila Mandal , Anson W. K. Ma , Qian Yang

A common assumption in semi-supervised learning is that the labeled, unlabeled, and test data are drawn from the same distribution. However, this assumption is not satisfied in many applications. In many scenarios, the data is collected…

Semi-supervised learning (SSL) is an efficient framework that can train models with both labeled and unlabeled data, but may generate ambiguous and non-distinguishable representations when lacking adequate labeled samples. With…

计算机视觉与模式识别 · 计算机科学 2022-08-08 Xinkai Yuan , Zilinghan Li , Gaoang Wang

In this paper, we study statistical properties of semi-supervised learning, which is considered as an important problem in the community of machine learning. In the standard supervised learning, only the labeled data is observed. The…

机器学习 · 统计学 2012-04-19 Masanori Kawakita , Takafumi Kanamori

Active learning aims to reduce the high labeling cost involved in training machine learning models on large datasets by efficiently labeling only the most informative samples. Recently, deep active learning has shown success on various…

计算机视觉与模式识别 · 计算机科学 2019-12-12 Sudhanshu Mittal , Maxim Tatarchenko , Özgün Çiçek , Thomas Brox

Active learning emerged as an alternative to alleviate the effort to label huge amount of data for data hungry applications (such as image/video indexing and retrieval, autonomous driving, etc.). The goal of active learning is to…

计算机视觉与模式识别 · 计算机科学 2020-10-20 Minghan Li , Xialei Liu , Joost van de Weijer , Bogdan Raducanu

In this work we discuss the problem of active learning. We present an approach that is based on A-optimal experimental design of ill-posed problems and show how one can optimally label a data set by partially probing it, and use it to train…

机器学习 · 计算机科学 2022-11-28 Tue Boesen , Eldad Haber

The article considers semi-supervised multitask learning on a Gaussian mixture model (GMM). Using methods from statistical physics, we compute the asymptotic Bayes risk of each task in the regime of large datasets in high dimension, from…

机器学习 · 统计学 2023-03-06 Minh-Toan Nguyen , Romain Couillet

Semi-supervised learning holds great promise for many real-world applications, due to its ability to leverage both unlabeled and expensive labeled data. However, most semi-supervised learning algorithms still heavily rely on the limited…

机器学习 · 计算机科学 2023-12-29 Huiling Qin , Xianyuan Zhan , Yuanxun Li , Yu Zheng

Adequate sampling space coverage is the keystone to effectively train trustworthy Machine Learning models. Unfortunately, real data do carry several inherent risks due to the many potential biases they exhibit when gathered without a proper…

机器学习 · 计算机科学 2025-03-27 Antonio Maratea , Rita Perna

In this paper, we propose a novel sequential data-driven method for dealing with equilibrium based chemical simulations, which can be seen as a specific machine learning approach called active learning. The underlying idea of our approach…

机器学习 · 统计学 2024-01-26 Mary Savino , Céline Lévy-Leduc , Marc Leconte , Benoit Cochepin