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Data imbalance is easily found in annotated data when the observations of certain continuous label values are difficult to collect for regression tasks. When they come to molecule and polymer property predictions, the annotated graph…

Machine Learning · Computer Science 2023-05-23 Gang Liu , Tong Zhao , Eric Inae , Tengfei Luo , Meng Jiang

While long-tailed semi-supervised learning (LTSSL) has attracted growing attention in many real-world classification tasks, existing LTSSL algorithms typically assume that labeled and unlabeled data share nearly identical class…

Machine Learning · Computer Science 2026-05-19 Kai Gan , Tong Wei , Min-Ling Zhang

This paper addresses the problem of Generalized Category Discovery (GCD) under a long-tailed distribution, which involves discovering novel categories in an unlabelled dataset using knowledge from a set of labelled categories. Existing…

Computer Vision and Pattern Recognition · Computer Science 2025-06-23 Bingchen Zhao , Kai Han

Supervised Dictionary Learning has gained much interest in the recent decade and has shown significant performance improvements in image classification. However, in general, supervised learning needs a large number of labelled samples per…

Computer Vision and Pattern Recognition · Computer Science 2020-09-15 Khanh-Hung Tran , Fred-Maurice Ngole-Mboula , Jean-Luc Starck , Vincent Prost

Semi-supervised object detection has made significant progress with the development of mean teacher driven self-training. Despite the promising results, the label mismatch problem is not yet fully explored in the previous works, leading to…

Computer Vision and Pattern Recognition · Computer Science 2022-06-15 Binbin Chen , Weijie Chen , Shicai Yang , Yunyi Xuan , Jie Song , Di Xie , Shiliang Pu , Mingli Song , Yueting Zhuang

Recently, pseudo label based semi-supervised learning has achieved great success in many fields. The core idea of the pseudo label based semi-supervised learning algorithm is to use the model trained on the labeled data to generate pseudo…

Machine Learning · Computer Science 2023-01-26 Zeping Min , Qian Ge , Cheng Tai

The goal in extreme multi-label classification is to learn a classifier which can assign a small subset of relevant labels to an instance from an extremely large set of target labels. Datasets in extreme classification exhibit a long tail…

Machine Learning · Statistics 2018-03-06 Rohit Babbar , Bernhard Schölkopf

Effective convolutional neural networks are trained on large sets of labeled data. However, creating large labeled datasets is a very costly and time-consuming task. Semi-supervised learning uses unlabeled data to train a model with higher…

Computer Vision and Pattern Recognition · Computer Science 2016-06-16 Mehdi Sajjadi , Mehran Javanmardi , Tolga Tasdizen

In real-world applications, as data availability increases, obtaining labeled data for machine learning (ML) projects remains challenging due to the high costs and intensive efforts required for data annotation. Many ML projects,…

Machine Learning · Computer Science 2024-12-24 Ismail Hakki Karaman , Gulser Koksal , Levent Eriskin , Salih Salihoglu

The long-tailed image classification task remains important in the development of deep neural networks as it explicitly deals with large imbalances in the class frequencies of the training data. While uncommon in engineered datasets, this…

Computer Vision and Pattern Recognition · Computer Science 2023-07-12 Marc-Antoine Lavoie , Steven Waslander

As an effective way to alleviate the burden of data annotation, semi-supervised learning (SSL) provides an attractive solution due to its ability to leverage both labeled and unlabeled data to build a predictive model. While significant…

Computer Vision and Pattern Recognition · Computer Science 2023-09-12 Hai-Ming Xu , Lingqiao Liu , Hao Chen , Ehsan Abbasnejad , Rafael Felix

Unsupervised domain adaptation aims to address the problem of classifying unlabeled samples from the target domain whilst labeled samples are only available from the source domain and the data distributions are different in these two…

Machine Learning · Computer Science 2019-11-20 Qian Wang , Toby P. Breckon

Learning discriminative image representations plays a vital role in long-tailed image classification because it can ease the classifier learning in imbalanced cases. Given the promising performance contrastive learning has shown recently in…

Computer Vision and Pattern Recognition · Computer Science 2021-03-29 Peng Wang , Kai Han , Xiu-Shen Wei , Lei Zhang , Lei Wang

State-of-the-art deep learning models are often trained with a large amount of costly labeled training data. However, requiring exhaustive manual annotations may degrade the model's generalizability in the limited-label regime.…

Computer Vision and Pattern Recognition · Computer Science 2022-08-25 Yanbei Chen , Massimiliano Mancini , Xiatian Zhu , Zeynep Akata

We explore a novel approach to semi-supervised learning. This approach is contrary to the common approach in that the unlabeled examples serve to "muffle," rather than enhance, the guidance provided by the labeled examples. We provide…

Machine Learning · Computer Science 2016-05-31 Akshay Balsubramani , Yoav Freund

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…

Machine Learning · Statistics 2012-04-19 Masanori Kawakita , Takafumi Kanamori

Self-training is a classical approach in semi-supervised learning which is successfully applied to a variety of machine learning problems. Self-training algorithm generates pseudo-labels for the unlabeled examples and progressively refines…

Machine Learning · Computer Science 2020-06-22 Samet Oymak , Talha Cihad Gulcu

Sequential sensor data is generated in a wide variety of practical applications. A fundamental challenge involves learning effective classifiers for such sequential data. While deep learning has led to impressive performance gains in recent…

Machine Learning · Computer Science 2020-10-07 Nauman Ahad , Mark A. Davenport

We investigate model based classification with partially labelled training data. In many biostatistical applications, labels are manually assigned by experts, who may leave some observations unlabelled due to class uncertainty. We analyse…

Methodology · Statistics 2019-04-08 Daniel Ahfock , Geoffrey J. McLachlan

Current 3D semi-supervised segmentation methods face significant challenges such as limited consideration of contextual information and the inability to generate reliable pseudo-labels for effective unsupervised data use. To address these…

Computer Vision and Pattern Recognition · Computer Science 2023-11-22 Sanaz Karimijafarbigloo , Reza Azad , Yury Velichko , Ulas Bagci , Dorit Merhof