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Most positive and unlabeled data is subject to selection biases. The labeled examples can, for example, be selected from the positive set because they are easier to obtain or more obviously positive. This paper investigates how learning can…

机器学习 · 计算机科学 2019-07-01 Jessa Bekker , Pieter Robberechts , Jesse Davis

Positive-Unlabeled (PU) Learning is a challenge presented by binary classification problems where there is an abundance of unlabeled data along with a small number of positive data instances, which can be used to address chronic disease…

机器学习 · 计算机科学 2023-09-08 Yang Wu , Xurui Li , Xuhong Zhang , Yangyang Kang , Changlong Sun , Xiaozhong Liu

We propose to formulate multi-label learning as a estimation of class distribution in a non-linear embedding space, where for each label, its positive data embeddings and negative data embeddings distribute compactly to form a positive…

机器学习 · 计算机科学 2020-12-18 Zhuo Yang , Yufei Han , Guoxian Yu , Qiang Yang , Xiangliang Zhang

Multi-label classification (MLC) faces challenges from label noise in training data due to annotating diverse semantic labels for each image. Current methods mainly target identifying and correcting label mistakes using trained MLC models,…

计算机视觉与模式识别 · 计算机科学 2024-04-17 Zhixiang Yuan , Kaixin Zhang , Tao Huang

Semisupervised learning is a learning standard which deals with the study of how computers and natural systems such as human beings acquire knowledge in the presence of both labeled and unlabeled data. Semisupervised learning based methods…

机器学习 · 计算机科学 2014-02-20 V. Jothi Prakash , Dr. L. M. Nithya

Unsupervised person re-identification (re-ID) aims at closing the performance gap to supervised methods. These methods build reliable relationship between data points while learning representations. However, we empirically show that the…

计算机视觉与模式识别 · 计算机科学 2021-03-22 Xuanyu He , Wei Zhang , Ran Song , Qian Zhang , Xiangyuan Lan , Lin Ma

Self-training is an effective approach to semi-supervised learning. The key idea is to let the learner itself iteratively generate "pseudo-supervision" for unlabeled instances based on its current hypothesis. In combination with consistency…

机器学习 · 统计学 2021-11-05 Julian Lienen , Eyke Hüllermeier

A growing specter in the rise of machine learning is whether the decisions made by machine learning models are fair. While research is already underway to formalize a machine-learning concept of fairness and to design frameworks for…

机器学习 · 计算机科学 2020-09-28 Tao Zhang , Tianqing Zhu , Jing Li , Mengde Han , Wanlei Zhou , Philip S. Yu

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…

机器学习 · 计算机科学 2023-08-24 Xudong Wang , Long Lian , Stella X. Yu

Learning from positive and unlabeled data (PU learning) is prevalent in practical applications where only a couple of examples are positively labeled. Previous PU learning studies typically rely on existing samples such that the data…

机器学习 · 计算机科学 2020-04-21 Tong Wei , Feng Shi , Hai Wang , Wei-Wei Tu. Yu-Feng Li

Class distribution mismatch (CDM) refers to the discrepancy between class distributions in training data and target tasks. Previous methods address this by designing classifiers to categorize classes known during training, while grouping…

计算机视觉与模式识别 · 计算机科学 2025-05-13 Pan Du , Wangbo Zhao , Xinai Lu , Nian Liu , Zhikai Li , Chaoyu Gong , Suyun Zhao , Hong Chen , Cuiping Li , Kai Wang , Yang You

Classification is an important task in many fields including biomedical research and machine learning. Traditionally, a classification rule is constructed based a bunch of labeled data. Recently, due to technological innovation and…

统计方法学 · 统计学 2014-06-19 Jing Wang , Eunsik Park , Yuan-chin Ivan Chang

Semi-supervised multi-label learning (SSMLL) aims to address the challenge of limited labeled data in multi-label learning (MLL) by leveraging unlabeled data to improve the model's performance. While pseudo-labeling has become a dominant…

机器学习 · 计算机科学 2025-12-03 Bo Han , Zhuoming Li , Xiaoyu Wang , Yaxin Hou , Hui Liu , Junhui Hou , Yuheng Jia

In the domain of semi-supervised learning (SSL), the conventional approach involves training a learner with a limited amount of labeled data alongside a substantial volume of unlabeled data, both drawn from the same underlying distribution.…

机器学习 · 计算机科学 2023-08-29 Guy Hacohen , Daphna Weinshall

In recent years, significant progress has been made in the field of learning from positive and unlabeled examples (PU learning), particularly in the context of advancing image and text classification tasks. However, applying PU learning to…

图像与视频处理 · 电气工程与系统科学 2024-05-08 Yan Zhang , Chun Li , Zhaoxia Liu , Ming Li

A central goal of unsupervised learning is to acquire representations from unlabeled data or experience that can be used for more effective learning of downstream tasks from modest amounts of labeled data. Many prior unsupervised learning…

机器学习 · 计算机科学 2019-03-25 Kyle Hsu , Sergey Levine , Chelsea Finn

Recent progress in semi- and self-supervised learning has caused a rift in the long-held belief about the need for an enormous amount of labeled data for machine learning and the irrelevancy of unlabeled data. Although it has been…

机器学习 · 计算机科学 2023-03-14 Minwook Kim , Juseong Kim , Giltae Song

We consider the problem of estimating the class prior in an unlabeled dataset. Under the assumption that an additional labeled dataset is available, the class prior can be estimated by fitting a mixture of class-wise data distributions to…

机器学习 · 计算机科学 2016-11-08 Marthinus C. du Plessis , Gang Niu , Masashi Sugiyama

Real-world training data is often noisy; for example, human annotators assign conflicting class labels to the same instances. Partial-label learning (PLL) is a weakly supervised learning paradigm that allows training classifiers in this…

机器学习 · 计算机科学 2025-10-27 Tobias Fuchs , Florian Kalinke

Multi-label learning deals with the classification problems where each instance can be assigned with multiple labels simultaneously. Conventional multi-label learning approaches mainly focus on exploiting label correlations. It is usually…

机器学习 · 计算机科学 2014-07-08 Xiangnan Kong , Zhaoming Wu , Li-Jia Li , Ruofei Zhang , Philip S. Yu , Hang Wu , Wei Fan