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Generalist graph anomaly detection (GAD) aims to detect anomalies on unseen graphs without graph-specific retraining. Nevertheless, existing approaches primarily focus on aligning heterogeneous features across different data domains via…

Machine Learning · Computer Science 2026-05-26 Yujing Liu , Yixin Liu , Yu Zheng , Alan Wee-Chung Liew , Xiaofeng Cao , Shirui Pan

Accurate indoor localization is crucial for enabling spatial context in smart environments and navigation systems. Wi-Fi Received Signal Strength (RSS) fingerprinting is a widely used indoor localization approach due to its compatibility…

Machine Learning · Computer Science 2025-07-16 Danish Gufran , Sudeep Pasricha

This paper proposes passive WiFi indoor localization. Instead of using WiFi signals received by mobile devices as fingerprints, we use signals received by routers to locate the mobile carrier. Consequently, software installation on the…

Signal Processing · Electrical Eng. & Systems 2025-11-04 Minh Tu Hoang , Brosnan Yuen , Kai Ren , Ahmed Elmoogy , Xiaodai Dong , Tao Lu , Hung Le Nguyen Robert Westendorp , Kishore Reddy Tarimala

Radio frequency fingerprint identification (RFFI) is becoming increasingly popular, especially in applications with constrained power, such as the Internet of Things (IoT). Due to subtle manufacturing variations, wireless devices have…

Signal Processing · Electrical Eng. & Systems 2024-10-11 Lu Yang , Seyit Camtepe , Yansong Gao , Vicky Liu , Dhammika Jayalath

WiFi-based indoor positioning has been extensively studied. A fundamental issue in such solutions is the collection of WiFi fingerprints. However, due to real-world constraints, collecting complete fingerprints at all intended locations is…

Signal Processing · Electrical Eng. & Systems 2024-07-30 Yu Chan , Pin-Yu Lin , Yu-Yun Tseng , Jen-Jee Chen , Yu-Chee Tseng

Wi-Fi-based positioning promises a scalable and privacy-preserving solution for location-based services in indoor environments such as malls, airports, and campuses. RSS-based methods are widely deployable as RSS data is available on all…

Signal Processing · Electrical Eng. & Systems 2025-09-30 Abdulkadir Bilge , Erdem Ergen , Burak Soner , Sinem Coleri

Indoor localization is the process of determining the location of a person or object inside a building. Potential usage of indoor localization includes navigation, personalization, safety and security, and asset tracking. Commonly used…

Signal Processing · Electrical Eng. & Systems 2023-12-14 Rahul Vishwakarma , Rucha Bhalchandra Joshi , Subhankar Mishra

The approximate nearest neighbor search (ANNS) is a fundamental and essential component in data mining and information retrieval, with graph-based methodologies demonstrating superior performance compared to alternative approaches.…

Information Retrieval · Computer Science 2024-07-16 Wentao Xiao , Yueyang Zhan , Rui Xi , Mengshu Hou , Jianming Liao

In today's world, modern infrastructures are being equipped with information and communication technologies to create large IoT networks. It is essential to monitor these networks to ensure smooth operations by detecting and correcting link…

Networking and Internet Architecture · Computer Science 2026-02-20 Blaž Bertalanič , Matej Vnučec , Carolina Fortuna

Simultaneous localization and mapping (SLAM) has been richly researched in past years particularly with regard to range-based or visual-based sensors. Instead of deploying dedicated devices that use visual features, it is more pragmatic to…

Wireless sensor networks (WSNs) are considered as a major technology enabling the Internet of Things (IoT) paradigm. The recent emerging Graph Signal Processing field can also contribute to enabling the IoT by providing key tools, such as…

Signal Processing · Electrical Eng. & Systems 2020-07-16 Leila Ben Saad , Baltasar Beferull-Lozano

In this paper, we propose an indoor localization system employing ordered sequence of access points (APs) based on received signal strength (RSS). Unlike existing indoor localization systems, our approach does not require any time-consuming…

Networking and Internet Architecture · Computer Science 2016-03-23 Ran Liu , Chau Yuen , Jun Zhao , Jindong Guo , Ronghong Mo , Vishesh N Pamadi , Xiang Liu

Radio frequency (RF) fingerprinting is a tool which allows for authentication by utilizing distinct and random distortions in a received signal based on characteristics of the transmitter. We introduce a deep learning-based authentication…

Signal Processing · Electrical Eng. & Systems 2023-03-15 Justin McMillen , Gokhan Mumcu , Yasin Yilmaz

With expeditious development of wireless communications, location fingerprinting (LF) has nurtured considerable indoor location based services (ILBSs) in the field of Internet of Things (IoT). For most pattern-matching based LF solutions,…

Signal Processing · Electrical Eng. & Systems 2020-05-13 Luan Chen , Iness Ahriz , Didier Le Ruyet

WiFi-based human pose estimation (HPE) has attracted increasing attention due to its resilience to occlusion and privacy-preserving compared to camera-based methods. However, existing WiFi-based HPE approaches often employ regression…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Jichao Chen , YangYang Qu , Ruibo Tang , Dirk Slock

As a promising non-password authentication technology, radio frequency (RF) fingerprinting can greatly improve wireless security. Recent work has shown that RF fingerprinting based on deep learning can significantly outperform conventional…

Signal Processing · Electrical Eng. & Systems 2023-05-01 Weidong Wang , Cheng Luo , Jiancheng An , Lu Gan , Hongshu Liao , Chau Yuen

K-Neares Neighbors (KNN) and its variant weighted KNN (WKNN) have been explored for years in both academy and industry to provide stable and reliable performance in WiFi-based indoor positioning systems. Such algorithms estimate the…

Signal Processing · Electrical Eng. & Systems 2023-02-03 Yinhuan Dong , Francisco Zampella , Firas Alsehly

With the growing integration of location based services (LBS) such as GPS in mobile devices, indoor position systems (IPS) have become an important role for research. There are several IPS methods such as AOA, TOA, TDOA, which use…

Networking and Internet Architecture · Computer Science 2019-07-02 Erick Schmidt , David Akopian

WiFi-based indoor localization has received extensive attentions from both academia and industry. However, the overhead of constructing and maintaining the WiFi fingerprint map remains a bottleneck for the wide-deployment of WiFi-based…

Signal Processing · Electrical Eng. & Systems 2019-11-28 Shilong Dai , Liang He , Xuebo Zhang

Graph unlearning, which deletes graph elements such as nodes and edges from trained graph neural networks (GNNs), is crucial for real-world applications where graph data may contain outdated, inaccurate, or privacy-sensitive information.…

Machine Learning · Computer Science 2025-05-20 Pengfei Ding , Yan Wang , Guanfeng Liu , Jiajie Zhu