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We consider the problem of learning a binary classifier from a training set of positive and unlabeled examples, both in the inductive and in the transductive setting. This problem, often referred to as \emph{PU learning}, differs from the…

机器学习 · 统计学 2010-10-06 Fantine Mordelet , Jean-Philippe Vert

Selective classification (or classification with a reject option) pairs a classifier with a selection function to determine whether or not a prediction should be accepted. This framework trades off coverage (probability of accepting a…

机器学习 · 计算机科学 2023-02-23 Andrea Pugnana , Salvatore Ruggieri

We study the problem of fair binary classification using the notion of Equal Opportunity. It requires the true positive rate to distribute equally across the sensitive groups. Within this setting we show that the fair optimal classifier is…

Existing popular unsupervised embedding learning methods focus on enhancing the instance-level local discrimination of the given unlabeled images by exploring various negative data. However, the existed sample outliers which exhibit large…

计算机视觉与模式识别 · 计算机科学 2021-07-20 Jiahuan Zhou , Yansong Tang , Bing Su , Ying Wu

Supervised classification algorithms are used to solve a growing number of real-life problems around the globe. Their performance is strictly connected with the quality of labels used in training. Unfortunately, acquiring good-quality…

机器学习 · 计算机科学 2024-07-08 Daniel Kałuża , Andrzej Janusz , Dominik Ślęzak

Multi-label learning draws great interests in many real world applications. It is a highly costly task to assign many labels by the oracle for one instance. Meanwhile, it is also hard to build a good model without diagnosing discriminative…

机器学习 · 计算机科学 2019-04-16 Bo Du , Zengmao Wang , Lefei Zhang , Liangpei Zhang , Dacheng Tao

Classification of high-dimensional spectroscopic data is a common task in analytical chemistry. Well-established procedures like support vector machines (SVMs) and partial least squares discriminant analysis (PLS-DA) are the most common…

应用统计 · 统计学 2021-01-29 Andrea Cappozzo , Ludovic Duponchel , Francesca Greselin , Thomas Brendan Murphy

Recent advances in weakly supervised classification allow us to train a classifier only from positive and unlabeled (PU) data. However, existing PU classification methods typically require an accurate estimate of the class-prior…

机器学习 · 统计学 2022-06-22 Tomoya Sakai , Gang Niu , Masashi Sugiyama

Weakly supervised learning has emerged as a practical alternative to fully supervised learning when complete and accurate labels are costly or infeasible to acquire. However, many existing methods are tailored to specific supervision…

机器学习 · 计算机科学 2025-12-01 Miao Zhang , Junpeng Li , Changchun Hua , Yana Yang

We propose a supervised anomaly detection method for data with inexact anomaly labels, where each label, which is assigned to a set of instances, indicates that at least one instance in the set is anomalous. Although many anomaly detection…

机器学习 · 统计学 2019-09-12 Tomoharu Iwata , Machiko Toyoda , Shotaro Tora , Naonori Ueda

Diagnosing and cleaning data is a crucial step for building robust machine learning systems. However, identifying problems within large-scale datasets with real-world distributions is challenging due to the presence of complex issues such…

机器学习 · 计算机科学 2023-10-31 Jang-Hyun Kim , Sangdoo Yun , Hyun Oh Song

Distantly supervised named entity recognition (DS-NER) has been proposed to exploit the automatically labeled training data by external knowledge bases instead of human annotations. However, it tends to suffer from a high false negative…

计算与语言 · 计算机科学 2025-04-08 Yuzhe Zhang , Min Cen , Hong Zhang

In binary classification, Learning from Positive and Unlabeled data (LePU) is semi-supervised learning but with labeled elements from only one class. Most of the research on LePU relies on some form of independence between the selection…

机器学习 · 计算机科学 2020-03-03 Naji Shajarisales , Peter Spirtes , Kun Zhang

Recent advancements in Machine Unlearning (MU) have introduced solutions to selectively remove certain training samples, such as those with outdated or sensitive information, from trained models. Despite these advancements, evaluation of MU…

机器学习 · 计算机科学 2024-12-24 Jiali Cheng , Hadi Amiri

During recent years, active learning has evolved into a popular paradigm for utilizing user's feedback to improve accuracy of learning algorithms. Active learning works by selecting the most informative sample among unlabeled data and…

机器学习 · 计算机科学 2016-11-17 Alireza Ghasemi , Hamid R. Rabiee , Mohsen Fadaee , Mohammad T. Manzuri , Mohammad H. Rohban

We address learning from positive and unlabeled (PU) data, a common setting in which only some positives are labeled and the rest are mixed with negatives. Classical exponential tilting models guarantee identifiability by assuming a linear…

统计方法学 · 统计学 2025-08-19 Peijun Sang , Yifan Sun , Qinglong Tian , Donglin Zeng , Pengfei Li

Area under the receiver operating characteristics curve (AUC) is an important metric for a wide range of signal processing and machine learning problems, and scalable methods for optimizing AUC have recently been proposed. However, handling…

机器学习 · 计算机科学 2018-06-01 San Gultekin , Avishek Saha , Adwait Ratnaparkhi , John Paisley

We address the problem of semi-supervised domain generalization (SSDG), where the distributions of train and test data differ, and only a small amount of labeled data along with a larger amount of unlabeled data are available during…

计算机视觉与模式识别 · 计算机科学 2025-04-29 Dongkwan Lee , Kyomin Hwang , Nojun Kwak

Mislabeled examples are ubiquitous in real-world machine learning datasets, advocating the development of techniques for automatic detection. We show that most mislabeled detection methods can be viewed as probing trained machine learning…

机器学习 · 计算机科学 2024-10-22 Thomas George , Pierre Nodet , Alexis Bondu , Vincent Lemaire

Boosting provides a practical and provably effective framework for constructing accurate learning algorithms from inaccurate rules of thumb. It extends the promise of sample-efficient learning to settings where direct Empirical Risk…

机器学习 · 计算机科学 2025-03-07 Udaya Ghai , Karan Singh