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Breakthroughs in unsupervised domain adaptation (uDA) can help in adapting models from a label-rich source domain to unlabeled target domains. Despite these advancements, there is a lack of research on how uDA algorithms, particularly those…

Machine Learning · Computer Science 2021-12-28 Shaoduo Gan , Akhil Mathur , Anton Isopoussu , Fahim Kawsar , Nadia Berthouze , Nicholas Lane

We address the problem of unsupervised domain adaptation (UDA) by learning a cross-domain agnostic embedding space, where the distance between the probability distributions of the two source and target visual domains is minimized. We use…

Machine Learning · Computer Science 2019-09-25 Alex Gabourie , Mohammad Rostami , Philip Pope , Soheil Kolouri , Kyungnam Kim

Wireless indoor localization has attracted significant amount of attention in recent years. Using received signal strength (RSS) obtained from WiFi access points (APs) for establishing fingerprinting database is a widely utilized method in…

Machine Learning · Computer Science 2023-07-18 An-Hung Hsiao , Li-Hsiang Shen , Chen-Yi Chang , Chun-Jie Chiu , Kai-Ten Feng

Feature matching across video streams remains a cornerstone challenge in computer vision. Increasingly, robust multimodal matching has garnered interest in robotics, surveillance, remote sensing, and medical imaging. While traditional rely…

Computer Vision and Pattern Recognition · Computer Science 2025-04-17 Jie Wang , Chen Ye Gan , Caoqi Wei , Jiangtao Wen , Yuxing Han

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 adaptation (UDA) plays a crucial role in addressing distribution shifts in machine learning. In this work, we improve the theoretical foundations of UDA proposed in Acuna et al. (2021) by refining their…

Machine Learning · Statistics 2024-10-29 Ziqiao Wang , Yongyi Mao

Emerging 5G millimeter-wave and sub-6 GHz networks enable high-accuracy indoor localization, but security and privacy vulnerabilities pose serious challenges. In this paper, we identify and address threats including location spoofing and…

Cryptography and Security · Computer Science 2025-05-26 Ildi Alla , Valeria Loscri

Map-based LiDAR localization, while widely used in autonomous systems, faces significant challenges in degraded environments due to lacking distinct geometric features. This paper introduces SuperLoc, a robust LiDAR localization package…

Robotics · Computer Science 2025-03-31 Shibo Zhao , Honghao Zhu , Yuanjun Gao , Beomsoo Kim , Yuheng Qiu , Aaron M. Johnson , Sebastian Scherer

A major technique for tackling unsupervised domain adaptation involves mapping data points from both the source and target domains into a shared embedding space. The mapping encoder to the embedding space is trained such that the embedding…

Computer Vision and Pattern Recognition · Computer Science 2024-01-17 Mohammad Rostami

This paper investigates a valuable setting called few-shot unsupervised domain adaptation (FS-UDA), which has not been sufficiently studied in the literature. In this setting, the source domain data are labelled, but with few-shot per…

Computer Vision and Pattern Recognition · Computer Science 2021-08-09 Shengqi Huang , Wanqi Yang , Lei Wang , Luping Zhou , Ming Yang

With the recent development in mobile computing devices and as the ubiquitous deployment of access points(APs) of Wireless Local Area Networks(WLANs), WLAN based indoor localization systems(WILSs) are of mounting concentration and are…

Machine Learning · Statistics 2017-04-13 Caifa Zhou , Lin Ma , Xuezhi Tan

One of the most challenging problems in fingerprint recognition continues to be establishing the identity of a suspect associated with partial and smudgy fingerprints left at a crime scene (i.e., latent prints or fingermarks). Despite the…

Computer Vision and Pattern Recognition · Computer Science 2023-09-11 Steven A. Grosz , Anil K. Jain

Multi-Source Unsupervised Domain Adaptation (multi-source UDA) aims to learn a model from several labeled source domains while performing well on a different target domain where only unlabeled data are available at training time. To align…

Computer Vision and Pattern Recognition · Computer Science 2021-09-28 Marin Scalbert , Maria Vakalopoulou , Florent Couzinié-Devy

Radio Frequency Fingerprinting (RFF) using deep learning has gained attention as a complementary approach to cryptographic authentication, offering resistance to spoofing, replay attacks, and key leakage. While most RFF approaches rely on…

Signal Processing · Electrical Eng. & Systems 2026-05-18 Fawaz Abdul Razak , Yasin Yilmaz

A domain (distribution) shift between training and test data often hinders the real-world performance of deep neural networks, necessitating unsupervised domain adaptation (UDA) to bridge this gap. Online source-free UDA has emerged as a…

Machine Learning · Computer Science 2025-06-02 Pascal Schlachter , Jonathan Fuss , Bin Yang

This paper presents a data-driven localization framework with high precision in time-varying complex multipath environments, such as dense urban areas and indoors, where GPS and model-based localization techniques come short. We consider…

Computer Vision and Pattern Recognition · Computer Science 2021-01-25 Farzam Hejazi , Katarina Vuckovic , Nazanin Rahnavard

Indoor localization systems have become increasingly important in a wide range of applications, including industry, security, logistics, and emergency services. However, the growing demand for accurate localization has heightened concerns…

Artificial Intelligence · Computer Science 2023-06-06 Mohamed Mohsen , Hamada Rizk , Moustafa Youssef

With the widespread application of location-based services, fingerprint-based localization has demonstrated advantages in environments with complex signal propagation. Deep learning has significantly improved the efficiency of both offline…

Information Theory · Computer Science 2026-05-27 Yu Zhao , Zhenzhou Jin , Jinke Tang , Li You , Chen Sun , Xiang-Gen Xia , Xiqi Gao

With the rapid proliferation of edge computing, Radio Frequency Fingerprint Identification (RFFI) has become increasingly important for secure device authentication. However, practical deployment of deep learning-based RFFI models is…

Machine Learning · Computer Science 2025-12-19 Liu Yang , Qiang Li , Luxiong Wen , Jian Yang

A novel approach for unsupervised domain adaptation for neural networks is proposed. It relies on metric-based regularization of the learning process. The metric-based regularization aims at domain-invariant latent feature representations…