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Semi-supervised learning deals with the problem of how, if possible, to take advantage of a huge amount of not classified data, to perform classification, in situations when, typically, the labelled data are few. Even though this is not…

统计理论 · 数学 2017-12-18 Alejandro Cholaquidis , Ricardo Fraiman , Mariela Sued

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

For classification tasks, deep neural networks are prone to overfitting in the presence of label noise. Although existing methods are able to alleviate this problem at low noise levels, they encounter significant performance reduction at…

机器学习 · 计算机科学 2021-05-31 Jingyi Xu , Tony Q. S. Quek , Kai Fong Ernest Chong

Positive-unlabeled learning (PUL) aims at learning a binary classifier from only positive and unlabeled training data. Even though real-world applications often involve imbalanced datasets where the majority of examples belong to one class,…

机器学习 · 统计学 2024-03-12 Emilio Dorigatti , Jann Goschenhofer , Benjamin Schubert , Mina Rezaei , Bernd Bischl

The problem of learning from few labeled examples while using large amounts of unlabeled data has been approached by various semi-supervised methods. Although these methods can achieve superior performance, the models are often not…

计算机视觉与模式识别 · 计算机科学 2021-09-21 Sahil Khose , Shruti Jain , V Manushree

Positive-Unlabeled (PU) learning tries to learn binary classifiers from a few labeled positive examples with many unlabeled ones. Compared with ordinary semi-supervised learning, this task is much more challenging due to the absence of any…

机器学习 · 计算机科学 2022-12-07 Yunrui Zhao , Qianqian Xu , Yangbangyan Jiang , Peisong Wen , Qingming Huang

There has been a growing concern about the fairness of decision-making systems based on machine learning. The shortage of labeled data has been always a challenging problem facing machine learning based systems. In such scenarios,…

机器学习 · 计算机科学 2020-01-01 Vahid Noroozi , Sara Bahaadini , Samira Sheikhi , Nooshin Mojab , Philip S. Yu

Improving a semi-supervised image segmentation task has the option of adding more unlabelled images, labelling the unlabelled images or combining both, as neither image acquisition nor expert labelling can be considered trivial in most…

图像与视频处理 · 电气工程与系统科学 2019-08-23 Yunguan Fu , Maria R. Robu , Bongjin Koo , Crispin Schneider , Stijn van Laarhoven , Danail Stoyanov , Brian Davidson , Matthew J. Clarkson , Yipeng Hu

Convolutional neural networks perform well on object recognition because of a number of recent advances: rectified linear units (ReLUs), data augmentation, dropout, and large labelled datasets. Unsupervised data has been proposed as another…

计算机视觉与模式识别 · 计算机科学 2015-04-14 Tom Le Paine , Pooya Khorrami , Wei Han , Thomas S. 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

In this paper we analyze the graph-based approach to semi-supervised learning under a manifold assumption. We adopt a Bayesian perspective and demonstrate that, for a suitable choice of prior constructed with sufficiently many unlabeled…

统计理论 · 数学 2021-06-15 Daniel Sanz-Alonso , Ruiyi Yang

Reviewing radiology reports in emergency departments is an essential but laborious task. Timely follow-up of patients with abnormal cases in their radiology reports may dramatically affect the patient's outcome, especially if they have been…

计算与语言 · 计算机科学 2018-12-06 Hamed Hassanzadeh , Mahnoosh Kholghi , Anthony Nguyen , Kevin Chu

Unsupervised learning is the most challenging problem in machine learning and especially in deep learning. Among many scenarios, we study an unsupervised learning problem of high economic value --- learning to predict without costly pairing…

机器学习 · 计算机科学 2016-06-16 Jianshu Chen , Po-Sen Huang , Xiaodong He , Jianfeng Gao , Li Deng

The recent history of machine learning research has taught us that machine learning methods can be most effective when they are provided with very large, high-capacity models, and trained on very large and diverse datasets. This has spurred…

机器学习 · 计算机科学 2021-10-26 Sergey Levine

Semi-supervised learning deals with the problem of how, if possible, to take advantage of a huge amount of unclassified data, to perform a classification in situations when, typically, there is little labeled data. Even though this is not…

机器学习 · 统计学 2020-12-11 Alejandro Cholaquidis , Ricardo Fraiman , Mariela Sued

A weakly-supervised learning framework named as complementary-label learning has been proposed recently, where each sample is equipped with a single complementary label that denotes one of the classes the sample does not belong to. However,…

机器学习 · 统计学 2020-07-24 Yuzhou Cao , Shuqi Liu , Yitian Xu

In unsupervised learning, the training data for deep learning does not come with any labels, thus forcing the algorithm to discover hidden patterns in the data for discerning useful information. This, in principle, could be a powerful tool…

无序系统与神经网络 · 物理学 2025-12-17 Jacob Taylor , Haining Pan , Sankar Das Sarma

Unregularized deep neural networks (DNNs) can be easily overfit with a limited sample size. We argue that this is mostly due to the disriminative nature of DNNs which directly model the conditional probability (or score) of labels given the…

机器学习 · 计算机科学 2016-01-11 Shuangfei Zhai , Zhongfei Zhang

We consider the unsupervised learning problem of assigning labels to unlabeled data. A naive approach is to use clustering methods, but this works well only when data is properly clustered and each cluster corresponds to an underlying…

机器学习 · 计算机科学 2013-05-02 Marthinus Christoffel du Plessis , Masashi Sugiyama

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