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Unsupervised active learning has attracted increasing attention in recent years, where its goal is to select representative samples in an unsupervised setting for human annotating. Most existing works are based on shallow linear models by…

Machine Learning · Computer Science 2020-07-29 Changsheng Li , Handong Ma , Zhao Kang , Ye Yuan , Xiao-Yu Zhang , Guoren Wang

One of the main problems in applying deep learning techniques to recognize activities of daily living (ADLs) based on inertial sensors is the lack of appropriately large labelled datasets to train deep learning-based models. A large amount…

Computer Vision and Pattern Recognition · Computer Science 2023-11-15 Hamza Amrani , Daniela Micucci , Paolo Napoletano

Most existing person re-identification (re-id) methods require supervised model learning from a separate large set of pairwise labelled training data for every single camera pair. This significantly limits their scalability and usability in…

Computer Vision and Pattern Recognition · Computer Science 2018-03-28 Jingya Wang , Xiatian Zhu , Shaogang Gong , Wei Li

Recent approaches leveraging multi-modal pre-trained models like CLIP for Unsupervised Domain Adaptation (UDA) have shown significant promise in bridging domain gaps and improving generalization by utilizing rich semantic knowledge and…

Computer Vision and Pattern Recognition · Computer Science 2025-06-16 Tung-Long Vuong , Hoang Phan , Vy Vo , Anh Bui , Thanh-Toan Do , Trung Le , Dinh Phung

Existing person re-identification (re-id) methods mostly rely on supervised model learning from a large set of person identity labelled training data per domain. This limits their scalability and usability in large scale deployments. In…

Computer Vision and Pattern Recognition · Computer Science 2021-01-19 Minxian Li , Xiatian Zhu , Shaogang Gong

In this paper, we propose a simple model referred as Contradistinguisher (CTDR) for unsupervised domain adaptation whose objective is to jointly learn to contradistinguish on unlabeled target domain in a fully unsupervised manner along with…

Machine Learning · Computer Science 2020-06-12 Sourabh Balgi , Ambedkar Dukkipati

Domain adaptive person re-identification (re-ID) is a challenging task due to the large discrepancy between the source domain and the target domain. To reduce the domain discrepancy, existing methods mainly attempt to generate pseudo labels…

Computer Vision and Pattern Recognition · Computer Science 2020-09-15 Junhui Yin , Jiayan Qiu , Siqing Zhang , Zhanyu Ma , Jun Guo

Person search is a challenging task which aims to achieve joint pedestrian detection and person re-identification (ReID). Previous works have made significant advances under fully and weakly supervised settings. However, existing methods…

Computer Vision and Pattern Recognition · Computer Science 2022-07-26 Junjie Li , Yichao Yan , Guanshuo Wang , Fufu Yu , Qiong Jia , Shouhong Ding

The empirical fact that classifiers, trained on given data collections, perform poorly when tested on data acquired in different settings is theoretically explained in domain adaptation through a shift among distributions of the source and…

Computer Vision and Pattern Recognition · Computer Science 2017-04-28 Fabio Maria Carlucci , Lorenzo Porzi , Barbara Caputo , Elisa Ricci , Samuel Rota Bulò

Dysarthric speech detection (DSD) systems aim to detect characteristics of the neuromotor disorder from speech. Such systems are particularly susceptible to domain mismatch where the training and testing data come from the source and target…

Audio and Speech Processing · Electrical Eng. & Systems 2021-07-26 Disong Wang , Liqun Deng , Yu Ting Yeung , Xiao Chen , Xunying Liu , Helen Meng

As a vital problem in pattern analysis and machine intelligence, Unsupervised Domain Adaptation (UDA) attempts to transfer an effective feature learner from a labeled source domain to an unlabeled target domain. Inspired by the success of…

Computer Vision and Pattern Recognition · Computer Science 2024-08-14 Ren Chuan-Xian , Zhai Yi-Ming , Luo You-Wei , Yan Hong

Investigation of machine learning algorithms robust to changes between the training and test distributions is an active area of research. In this paper we explore a special type of dataset shift which we call class-dependent domain shift.…

Machine Learning · Computer Science 2020-07-13 Tigran Galstyan , Hrant Khachatrian , Greg Ver Steeg , Aram Galstyan

Unsupervised domain adaptation for person re-identification (Person Re-ID) is the task of transferring the learned knowledge on the labeled source domain to the unlabeled target domain. Most of the recent papers that address this problem…

Computer Vision and Pattern Recognition · Computer Science 2022-05-10 Hamza Rami , Matthieu Ospici , Stéphane Lathuilière

Current state-of-the-art self-supervised approaches, are effective when trained on individual domains but show limited generalization on unseen domains. We observe that these models poorly generalize even when trained on a mixture of…

Computer Vision and Pattern Recognition · Computer Science 2023-12-14 Neha Kalibhat , Sam Sharpe , Jeremy Goodsitt , Bayan Bruss , Soheil Feizi

Unsupervised person re-identification (Re-ID) attracts increasing attention due to its potential to resolve the scalability problem of supervised Re-ID models. Most existing unsupervised methods adopt an iterative clustering mechanism,…

Computer Vision and Pattern Recognition · Computer Science 2021-12-09 Lianjie Jia , Chenyang Yu , Xiehao Ye , Tianyu Yan , Yinjie Lei , Pingping Zhang

In recent years, deep neural networks have emerged as a dominant machine learning tool for a wide variety of application domains. However, training a deep neural network requires a large amount of labeled data, which is an expensive process…

Computer Vision and Pattern Recognition · Computer Science 2017-06-26 Hemanth Venkateswara , Jose Eusebio , Shayok Chakraborty , Sethuraman Panchanathan

Unsupervised domain adaptive person re-identification has received significant attention due to its high practical value. In past years, by following the clustering and finetuning paradigm, researchers propose to utilize the teacher-student…

Computer Vision and Pattern Recognition · Computer Science 2021-12-07 Yang Peng , Ping Liu , Yawei Luo , Pan Zhou , Zichuan Xu , Jingen Liu

Unsupervised cross-domain image retrieval (UCIR) aims to retrieve images of the same category across diverse domains without relying on annotations. Existing UCIR methods, which align cross-domain features for the entire image, often…

Computer Vision and Pattern Recognition · Computer Science 2025-09-05 Ruohong Yang , Peng Hu , Yunfan Li , Xi Peng

Deep learning has achieved notable success in 3D object detection with the advent of large-scale point cloud datasets. However, severe performance degradation in the past trained classes, i.e., catastrophic forgetting, still remains a…

Computer Vision and Pattern Recognition · Computer Science 2022-12-06 Ziyuan Zhao , Mingxi Xu , Peisheng Qian , Ramanpreet Singh Pahwa , Richard Chang

Unsupervised domain adaptation (UDA) typically carries out knowledge transfer from a label-rich source domain to an unlabeled target domain by adversarial learning. In principle, existing UDA approaches mainly focus on the global…

Computer Vision and Pattern Recognition · Computer Science 2021-03-05 Hui Wang , Jian Tian , Songyuan Li , Hanbin Zhao , Qi Tian , Fei Wu , Xi Li
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