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Many unsupervised domain adaptive (UDA) person re-identification (ReID) approaches combine clustering-based pseudo-label prediction with feature fine-tuning. However, because of domain gap, the pseudo-labels are not always reliable and…

Computer Vision and Pattern Recognition · Computer Science 2020-12-18 Kecheng Zheng , Cuiling Lan , Wenjun Zeng , Zhizheng Zhang , Zheng-Jun Zha

Image recognition is an important topic in computer vision and image processing, and has been mainly addressed by supervised deep learning methods, which need a large set of labeled images to achieve promising performance. However, in most…

Computer Vision and Pattern Recognition · Computer Science 2019-08-13 Haoqian Wang , Zhiwei Xu , Jun Xu , Wangpeng An , Lei Zhang , Qionghai Dai

Deep neural networks are gaining increasing popularity for the classic text classification task, due to their strong expressive power and less requirement for feature engineering. Despite such attractiveness, neural text classification…

Information Retrieval · Computer Science 2018-09-13 Yu Meng , Jiaming Shen , Chao Zhang , Jiawei Han

Time series data have grown at an explosive rate in numerous domains and have stimulated a surge of time series modeling research. A comprehensive comparison of different time series models, for a considered data analytics task, provides…

Machine Learning · Computer Science 2021-03-18 Qiyao Wang , Ahmed Farahat , Chetan Gupta , Shuai Zheng

Sample selection is a prevalent approach in learning with noisy labels, aiming to identify confident samples for training. Although existing sample selection methods have achieved decent results by reducing the noise rate of the selected…

Machine Learning · Computer Science 2025-10-22 Suqin Yuan , Lei Feng , Bo Han , Tongliang Liu

Weakly supervised visual recognition using inexact supervision is a critical yet challenging learning problem. It significantly reduces human labeling costs and traditionally relies on multi-instance learning and pseudo-labeling. This paper…

Computer Vision and Pattern Recognition · Computer Science 2024-08-20 Lianghui Zhu , Junwei Zhou , Yan Liu , Xin Hao , Wenyu Liu , Xinggang Wang

Imbalanced data represent a distribution with more frequencies of one class (majority) than the other (minority). This phenomenon occurs across various domains, such as security, medical care and human activity. In imbalanced learning,…

Machine Learning · Computer Science 2025-03-25 Hadi Mohammadi , Ehsan Nazerfard , Mostafa Haghir Chehreghani

Large-scale datasets have driven the rapid development of deep neural networks for visual recognition. However, annotating a massive dataset is expensive and time-consuming. Web images and their labels are, in comparison, much easier to…

Computer Vision and Pattern Recognition · Computer Science 2016-12-01 Bohan Zhuang , Lingqiao Liu , Yao Li , Chunhua Shen , Ian Reid

Extreme classification tasks are multi-label tasks with an extremely large number of labels (tags). These tasks are hard because the label space is usually (i) very large, e.g. thousands or millions of labels, (ii) very sparse, i.e. very…

Machine Learning · Computer Science 2020-12-04 Elham J. Barezi , Iacer Calixto , Kyunghyun Cho , Pascale Fung

Many real-world classification problems have imbalanced frequency of class labels; a well-known issue known as the "class imbalance" problem. Classic classification algorithms tend to be biased towards the majority class, leaving the…

Predicting all applicable labels for a given image is known as multi-label classification. Compared to the standard multi-class case (where each image has only one label), it is considerably more challenging to annotate training data for…

Computer Vision and Pattern Recognition · Computer Science 2021-10-25 Elijah Cole , Oisin Mac Aodha , Titouan Lorieul , Pietro Perona , Dan Morris , Nebojsa Jojic

We present a novel model called OCGAN for the classical problem of one-class novelty detection, where, given a set of examples from a particular class, the goal is to determine if a query example is from the same class. Our solution is…

Computer Vision and Pattern Recognition · Computer Science 2021-02-23 Pramuditha Perera , Ramesh Nallapati , Bing Xiang

Recent research has revealed that deep neural networks often take dataset biases as a shortcut to make decisions rather than understand tasks, leading to failures in real-world applications. In this study, we focus on the spurious…

Computation and Language · Computer Science 2023-06-23 Yanrui Du , Jing Yan , Yan Chen , Jing Liu , Sendong Zhao , Qiaoqiao She , Hua Wu , Haifeng Wang , Bing Qin

Class imbalance is a common problem in supervised learning and impedes the predictive performance of classification models. Popular countermeasures include oversampling the minority class. Standard methods like SMOTE rely on finding nearest…

Machine Learning · Computer Science 2020-08-24 Justin Engelmann , Stefan Lessmann

In this paper we propose a novel learning framework called Supervised and Weakly Supervised Learning where the goal is to learn simultaneously from weakly and strongly labeled data. Strongly labeled data can be simply understood as fully…

Machine Learning · Computer Science 2017-02-21 Anurag Kumar , Bhiksha Raj

Despite that deep learning has achieved state-of-the-art performance for medical image segmentation, its success relies on a large set of manually annotated images for training that are expensive to acquire. In this paper, we propose an…

Image and Video Processing · Electrical Eng. & Systems 2021-01-01 Lu Wang , Dong Guo , Guotai Wang , Shaoting Zhang

We propose an approach to address two issues that commonly occur during training of unsupervised GANs. First, since GANs use only a continuous latent distribution to embed multiple classes or clusters of data, they often do not correctly…

Machine Learning · Computer Science 2018-03-13 Youngjin Kim , Minjung Kim , Gunhee Kim

We consider the problem of retrieving the most relevant labels for a given input when the size of the output space is very large. Retrieval methods are modeled as set-valued classifiers which output a small set of classes for each input,…

Machine Learning · Computer Science 2018-10-17 Sashank J. Reddi , Satyen Kale , Felix Yu , Dan Holtmann-Rice , Jiecao Chen , Sanjiv Kumar

Like many other domains in Artificial Intelligence (AI), there are specific tasks in the field of AI in Education (AIEd) for which labels are scarce and expensive, such as predicting exam score or review correctness. A common way of…

Given a labeled dataset that contains a rare (or minority) class of of-interest instances, as well as a large class of instances that are not of interest, how can we learn to recognize future of-interest instances over a continuous stream?…

Machine Learning · Computer Science 2019-07-01 Hung Nguyen , Xuejian Wang , Leman Akoglu