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A key challenge for machine intelligence is to learn new visual concepts without forgetting the previously acquired knowledge. Continual learning is aimed towards addressing this challenge. However, there is a gap between existing…

Machine Learning · Computer Science 2024-02-01 Yan Luo , Yongkang Wong , Mohan Kankanhalli , Qi Zhao

In computational pathology, we often face a scarcity of annotations and a large amount of unlabeled data. One method for dealing with this is semi-supervised learning which is commonly split into a self-supervised pretext task and a…

Computer Vision and Pattern Recognition · Computer Science 2022-03-15 Manuel Tran , Sophia J. Wagner , Melanie Boxberg , Tingying Peng

Recently, hashing methods have been widely used in large-scale image retrieval. However, most existing hashing methods did not consider the hierarchical relation of labels, which means that they ignored the rich information stored in the…

Computer Vision and Pattern Recognition · Computer Science 2017-09-13 Dan Wang , Heyan Huang , Chi Lu , Bo-Si Feng , Liqiang Nie , Guihua Wen , Xian-Ling Mao

Node classification and graph classification are two graph learning problems that predict the class label of a node and the class label of a graph respectively. A node of a graph usually represents a real-world entity, e.g., a user in a…

Social and Information Networks · Computer Science 2022-09-07 Jia Li , Yongfeng Huang , Heng Chang , Yu Rong

In this paper, a novel semi-supervised dictionary learning and sparse representation (SS-DLSR) is proposed. The proposed method benefits from the supervisory information by learning the dictionary in a space where the dependency between the…

Computer Vision and Pattern Recognition · Computer Science 2016-04-26 Mehrdad J. Gangeh , Safaa M. A. Bedawi , Ali Ghodsi , Fakhri Karray

Multi-label classification is a widely encountered problem in daily life, where an instance can be associated with multiple classes. In theory, this is a supervised learning method that requires a large amount of labeling. However,…

Computer Vision and Pattern Recognition · Computer Science 2023-08-02 XIn Zhang , Yuqi Song , Fei Zuo , Xiaofeng Wang

Hierarchical multi-label classification (HMLC) is essential for modeling complex label dependencies in remote sensing. Existing methods, however, struggle with multi-path hierarchies where instances belong to multiple branches, and they…

Computer Vision and Pattern Recognition · Computer Science 2026-03-13 Marjan Stoimchev , Boshko Koloski , Jurica Levatić , Dragi Kocev , Sašo Džeroski

Binary classification (BC) is a practical task that is ubiquitous in real-world problems, such as distinguishing healthy and unhealthy objects in biomedical diagnostics and defective and non-defective products in manufacturing inspections.…

Computer Vision and Pattern Recognition · Computer Science 2022-11-29 Imam Mustafa Kamal , Hyerim Bae

Given an unlabeled dataset and an annotation budget, we study how to selectively label a fixed number of instances so that semi-supervised learning (SSL) on such a partially labeled dataset is most effective. We focus on selecting the right…

Machine Learning · Computer Science 2023-08-24 Xudong Wang , Long Lian , Stella X. Yu

The lack of labeled data is a common challenge in speech classification tasks, particularly those requiring extensive subjective assessment, such as cognitive state classification. In this work, we propose a Semi-Supervised Learning (SSL)…

Audio and Speech Processing · Electrical Eng. & Systems 2025-05-01 Yuanchao Li , Zixing Zhang , Jing Han , Peter Bell , Catherine Lai

Although data is abundant, data labeling is expensive. Semi-supervised learning methods combine a few labeled samples with a large corpus of unlabeled data to effectively train models. This paper introduces our proposed method LiDAM, a…

Machine Learning · Computer Science 2020-11-25 Qun Liu , Matthew Shreve , Raja Bala

The past few years have witnessed a remarkable advance in deep learning for EEG-based sleep stage classification (SSC). However, the success of these models is attributed to possessing a massive amount of labeled data for training, limiting…

Signal Processing · Electrical Eng. & Systems 2022-10-14 Emadeldeen Eldele , Mohamed Ragab , Zhenghua Chen , Min Wu , Chee-Keong Kwoh , Xiaoli Li

Semi-supervised learning utilizes insights from unlabeled data to improve model generalization, thereby reducing reliance on large labeled datasets. Most existing studies focus on limited samples and fail to capture the overall data…

Computer Vision and Pattern Recognition · Computer Science 2025-03-13 Xiuzhen Guo , Lianyuan Yu , Ji Shi , Na Lei , Hongxiao Wang

In this paper, we study the problem of learning from weakly labeled data, where labels of the training examples are incomplete. This includes, for example, (i) semi-supervised learning where labels are partially known; (ii) multi-instance…

Machine Learning · Computer Science 2020-07-07 Yu-Feng Li , Ivor W. Tsang , James T. Kwok , Zhi-Hua Zhou

Deep learning segmentation relies heavily on labeled data, but manual labeling is laborious and time-consuming, especially for volumetric images such as brain magnetic resonance imaging (MRI). While recent domain-randomization techniques…

Computer Vision and Pattern Recognition · Computer Science 2025-12-05 Bella Specktor-Fadida , Malte Hoffmann

We address the challenges of the semi-supervised LiDAR segmentation (SSLS) problem, particularly in low-budget scenarios. The two main issues in low-budget SSLS are the poor-quality pseudo-labels for unlabeled data, and the performance…

Computer Vision and Pattern Recognition · Computer Science 2024-10-10 Seungho Lee , Hwijeong Lee , Hyunjung Shim

Majority subspace clustering (SC) algorithms depend on one or more hyperparameters that need to be carefully tuned for the SC algorithms to achieve high clustering performance. Hyperparameter optimization (HPO) is often performed using…

Machine Learning · Computer Science 2024-11-27 Ivica Kopriva

Structural health monitoring (SHM) has experienced significant advancements in recent decades, accumulating massive monitoring data. Data anomalies inevitably exist in monitoring data, posing significant challenges to their effective…

Machine Learning · Computer Science 2024-12-06 Mingyuan Zhou , Xudong Jian , Ye Xia , Zhilu Lai

Pseudo-labeling is a commonly used paradigm in semi-supervised learning, yet its application to semi-supervised regression (SSR) remains relatively under-explored. Unlike classification, where pseudo-labels are discrete and confidence-based…

Machine Learning · Computer Science 2025-10-20 Xueqing Sun , Renzhen Wang , Quanziang Wang , Yichen Wu , Xixi Jia , Deyu Meng

In structured output learning, obtaining labelled data for real-world applications is usually costly, while unlabelled examples are available in abundance. Semi-supervised structured classification has been developed to handle large amounts…

Machine Learning · Computer Science 2013-11-12 P. Balamurugan , Shirish Shevade , Sundararajan Sellamanickam