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Self-Supervised Learning (SSL) has emerged as the solution of choice to learn transferable representations from unlabeled data. However, SSL requires to build samples that are known to be semantically akin, i.e. positive views. Requiring…

Machine Learning · Computer Science 2023-10-02 Vivien Cabannes , Leon Bottou , Yann Lecun , Randall Balestriero

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

Active learning (AL) combines data labeling and model training to minimize the labeling cost by prioritizing the selection of high value data that can best improve model performance. In pool-based active learning, accessible unlabeled data…

Machine Learning · Computer Science 2020-07-21 Mingfei Gao , Zizhao Zhang , Guo Yu , Sercan O. Arik , Larry S. Davis , Tomas Pfister

An active learning (AL) algorithm seeks to construct an effective classifier with a minimal number of labeled examples in a bootstrapping manner. While standard AL heuristics, such as selecting those points for annotation for which a…

Computer Vision and Pattern Recognition · Computer Science 2020-09-03 Ishani Mondal , Debasis Ganguly

We design an active learning algorithm for cost-sensitive multiclass classification: problems where different errors have different costs. Our algorithm, COAL, makes predictions by regressing to each label's cost and predicting the…

Machine Learning · Computer Science 2021-10-13 Akshay Krishnamurthy , Alekh Agarwal , Tzu-Kuo Huang , Hal Daume , John Langford

Active learning (AL) uses a data selection algorithm to select useful training samples to minimize annotation cost. This is now an essential tool for building low-resource syntactic analyzers such as part-of-speech (POS) taggers. Existing…

Computation and Language · Computer Science 2020-11-24 Aditi Chaudhary , Antonios Anastasopoulos , Zaid Sheikh , Graham Neubig

Active learning (AL) strategies aim to train high-performance models with minimal labeling efforts, only selecting the most informative instances for annotation. Current approaches to evaluating data informativeness predominantly focus on…

Computer Vision and Pattern Recognition · Computer Science 2026-01-23 Zhixuan Liang , Xingyu Zeng , Rui Zhao , Ping Luo

Despite the vast body of literature on Active Learning (AL), there is no comprehensive and open benchmark allowing for efficient and simple comparison of proposed samplers. Additionally, the variability in experimental settings across the…

Machine Learning · Computer Science 2023-04-12 W. Jonas , A. Abraham , L. Dreyfus-Schmidt

Active Learning (AL) for semantic segmentation is challenging due to heavy class imbalance and different ways of defining "sample" (pixels, areas, etc.), leaving the interpretation of the data distribution ambiguous. We propose…

Computer Vision and Pattern Recognition · Computer Science 2023-08-30 Amirsaeed Yazdani , Xuelu Li , Vishal Monga

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

In many data mining applications collection of sufficiently large datasets is the most time consuming and expensive. On the other hand, industrial methods of data collection create huge databases, and make difficult direct applications of…

Machine Learning · Statistics 2011-08-03 Vladimir Nikulin

This paper proposes asal, a new GAN based active learning method that generates high entropy samples. Instead of directly annotating the synthetic samples, ASAL searches similar samples from the pool and includes them for training. Hence,…

Machine Learning · Computer Science 2019-12-24 Christoph Mayer , Radu Timofte

Pool-based active learning (AL) aims to optimize the annotation process (i.e., labeling) as the acquisition of annotations is often time-consuming and therefore expensive. For this purpose, an AL strategy queries annotations intelligently…

Machine Learning · Computer Science 2022-01-06 Marek Herde , Denis Huseljic , Bernhard Sick , Adrian Calma

Active learning(AL) has recently gained popularity for deep learning(DL) models. This is due to efficient and informative sampling, especially when the learner requires large-scale labelled datasets. Commonly, the sampling and training…

Computer Vision and Pattern Recognition · Computer Science 2023-01-05 Razvan Caramalau , Binod Bhattarai , Danail Stoyanov , Tae-Kyun Kim

Active learning (AL) is an effective approach to select the most informative samples to label so as to reduce the annotation cost. Existing AL methods typically work under the closed-set assumption, i.e., all classes existing in the…

Computer Vision and Pattern Recognition · Computer Science 2023-07-12 Linhao Qu , Yingfan Ma , Zhiwei Yang , Manning Wang , Zhijian Song

Learning-based approaches for semantic segmentation have two inherent challenges. First, acquiring pixel-wise labels is expensive and time-consuming. Second, realistic segmentation datasets are highly unbalanced: some categories are much…

Computer Vision and Pattern Recognition · Computer Science 2020-02-18 Arantxa Casanova , Pedro O. Pinheiro , Negar Rostamzadeh , Christopher J. Pal

Active learning (AL) aims to minimize labeling efforts for data-demanding deep neural networks (DNNs) by selecting the most representative data points for annotation. However, currently used methods are ill-equipped to deal with biased…

Computer Vision and Pattern Recognition · Computer Science 2020-03-03 Denis Gudovskiy , Alec Hodgkinson , Takuya Yamaguchi , Sotaro Tsukizawa

Training deep learning models on medical datasets that perform well for all classes is a challenging task. It is often the case that a suboptimal performance is obtained on some classes due to the natural class imbalance issue that comes…

Computer Vision and Pattern Recognition · Computer Science 2022-10-05 Suraj Kothawade , Atharv Savarkar , Venkat Iyer , Lakshman Tamil , Ganesh Ramakrishnan , Rishabh Iyer

Efficient data annotation remains a critical challenge in machine learning, particularly for object detection tasks requiring extensive labeled data. Active learning (AL) has emerged as a promising solution to minimize annotation costs by…

Computer Vision and Pattern Recognition · Computer Science 2025-09-25 Somraj Gautam , Nachiketa Purohit , Gaurav Harit

In our today's information society more and more data emerges, e.g.~in social networks, technical applications, or business applications. Companies try to commercialize these data using data mining or machine learning methods. For this…

Machine Learning · Statistics 2016-10-17 Tobias Reitmaier , Adrian Calma , Bernhard Sick