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Semi-supervised learning (SSL) has made significant strides in the field of remote sensing. Finding a large number of labeled datasets for SSL methods is uncommon, and manually labeling datasets is expensive and time-consuming. Furthermore,…

计算机视觉与模式识别 · 计算机科学 2022-12-22 Fahmida Tasnim Lisa , Md. Zarif Hossain , Sharmin Naj Mou , Shahriar Ivan , Md. Hasanul Kabir

In real-world classification problems, the class balance in the training dataset does not necessarily reflect that of the test dataset, which can cause significant estimation bias. If the class ratio of the test dataset is known, instance…

机器学习 · 计算机科学 2012-06-22 Marthinus Du Plessis , Masashi Sugiyama

The performance of machine learning model can be further improved if contextual cues are provided as input along with base features that are directly related to an inference task. In offline learning, one can inspect historical training…

机器学习 · 计算机科学 2019-10-21 Kin Gwn Lore , Kishore K. Reddy

In last few years there are major changes and evolution has been done on classification of data. As the application area of technology is increases the size of data also increases. Classification of data becomes difficult because of…

机器学习 · 计算机科学 2013-05-09 Rushi Longadge , Snehalata Dongre

Unsupervised disentangled representation learning is a long-standing problem in computer vision. This work proposes a novel framework for performing image clustering from deep embeddings by combining instance-level contrastive learning with…

机器学习 · 计算机科学 2021-10-05 Ramakrishnan Sundareswaran , Jansel Herrera-Gerena , John Just , Ali Jannesari

Unsupervised machine learning is one of the main techniques employed in artificial intelligence. We introduce an algorithm for quantum-assisted unsupervised data clustering using the self-organizing feature map, a type of artificial neural…

量子物理 · 物理学 2025-01-13 Ilia D. Lazarev , Marek Narozniak , Tim Byrnes , Alexey N. Pyrkov

Unsupervised models can provide supplementary soft constraints to help classify new, "target" data since similar instances in the target set are more likely to share the same class label. Such models can also help detect possible…

机器学习 · 计算机科学 2012-06-06 Ayan Acharya , Eduardo R. Hruschka , Joydeep Ghosh , Sreangsu Acharyya

When modeling class-imbalanced data, it is crucial to address the imbalance, as models trained on such data tend to be biased towards the majority classes. This problem is amplified under partial supervision, where pseudo-labels for…

机器学习 · 统计学 2026-05-08 Heegeon Yoon , Heeyoung Kim

Semi-supervised Learning (SSL) reduces the need for extensive annotations in deep learning, but the more realistic challenge of imbalanced data distribution in SSL remains largely unexplored. In Class Imbalanced Semi-supervised Learning…

计算机视觉与模式识别 · 计算机科学 2024-07-15 Qianhan Feng , Lujing Xie , Shijie Fang , Tong Lin

Reaching the performance of fully supervised learning with unlabeled data and only labeling one sample per class might be ideal for deep learning applications. We demonstrate for the first time the potential for building one-shot…

机器学习 · 计算机科学 2021-01-27 Leslie N. Smith , Adam Conovaloff

In semi-supervised learning for classification, it is assumed that every ground truth class of data is present in the small labelled dataset. Many real-world sparsely-labelled datasets are plausibly not of this type. It could easily be the…

机器学习 · 统计学 2021-01-11 Matthew Willetts , Stephen J Roberts , Christopher C Holmes

Traditional machine learning models focus on achieving good performance on the overall training distribution, but they often underperform on minority groups. Existing methods can improve the worst-group performance, but they can have…

机器学习 · 计算机科学 2022-10-14 Yuchen Zeng , Kristjan Greenewald , Kangwook Lee , Justin Solomon , Mikhail Yurochkin

Diffusion-based models have shown the merits of generating high-quality visual data while preserving better diversity in recent studies. However, such observation is only justified with curated data distribution, where the data samples are…

计算机视觉与模式识别 · 计算机科学 2023-06-16 Yiming Qin , Huangjie Zheng , Jiangchao Yao , Mingyuan Zhou , Ya Zhang

Federated learning, which allows multiple client devices in a network to jointly train a machine learning model without direct exposure of clients' data, is an emerging distributed learning technique due to its nature of privacy…

机器学习 · 计算机科学 2023-03-22 Jing Zhang , Chuanwen Li , Jianzgong Qi , Jiayuan He

Structural concept complexity, class overlap, and data scarcity are some of the most important factors influencing the performance of classifiers under class imbalance conditions. When these effects were uncovered in the early 2000s,…

机器学习 · 计算机科学 2021-07-30 Kushankur Ghosh , Colin Bellinger , Roberto Corizzo , Bartosz Krawczyk , Nathalie Japkowicz

Private business schools in India face a common problem of selecting quality students for their MBA programs to achieve the desired placement percentage. Generally, such data sets are biased towards one class, i.e., imbalanced in nature.…

机器学习 · 计算机科学 2022-07-18 Tanujit Chakraborty

Pre-training general-purpose visual features with convolutional neural networks without relying on annotations is a challenging and important task. Most recent efforts in unsupervised feature learning have focused on either small or highly…

计算机视觉与模式识别 · 计算机科学 2019-08-14 Mathilde Caron , Piotr Bojanowski , Julien Mairal , Armand Joulin

Class imbalance (CI) in classification problems arises when the number of observations belonging to one class is lower than the other. Ensemble learning combines multiple models to obtain a robust model and has been prominently used with…

机器学习 · 计算机科学 2023-11-28 Azal Ahmad Khan , Omkar Chaudhari , Rohitash Chandra

Numerous studies attempt to mitigate classification bias caused by class imbalance. However, existing studies have yet to explore the collaborative optimization of imbalanced learning and model training. This constraint hinders further…

机器学习 · 计算机科学 2025-12-30 Chuantao Li , Zhi Li , Jiahao Xu , Jie Li , Sheng Li

Can we automatically group images into semantically meaningful clusters when ground-truth annotations are absent? The task of unsupervised image classification remains an important, and open challenge in computer vision. Several recent…

计算机视觉与模式识别 · 计算机科学 2020-07-06 Wouter Van Gansbeke , Simon Vandenhende , Stamatios Georgoulis , Marc Proesmans , Luc Van Gool