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Trajectory data collection is a common task with many applications in our daily lives. Analyzing trajectory data enables service providers to enhance their services, which ultimately benefits users. However, directly collecting trajectory…

Databases · Computer Science 2023-07-25 Yuemin Zhang , Qingqing Ye , Rui Chen , Haibo Hu , Qilong Han

Large language model (LLM) routing has emerged as a critical strategy to balance model performance and cost-efficiency by dynamically selecting services from various model providers. However, LLM routing adds an intermediate layer between…

Cryptography and Security · Computer Science 2026-04-20 Xidong Wu , Yukuan Zhang , Yuqiong Ji , Reza Shirkavand , Qian Lou , Shangqian Gao

Privacy in form of anonymous communication could be comparably both faster and harder to break in optical routers than in today's anonymous IP networks based on The Onion Routing (Tor). Implementing the practical privacy…

Cryptography and Security · Computer Science 2016-10-31 Anna Engelmann , Admela Jukan

This paper introduces a novel privacy-preservation framework named PFID for LLMs that addresses critical privacy concerns by localizing user data through model sharding and singular value decomposition. When users are interacting with LLM…

Computation and Language · Computer Science 2024-06-19 Haoyan Yang , Zhitao Li , Yong Zhang , Jianzong Wang , Ning Cheng , Ming Li , Jing Xiao

Camera fingerprint detection plays a crucial role in source identification and image forensics, with wavelet denoising approaches proving to be particularly effective in extracting sensor pattern noise (SPN). In this article, we propose a…

Computer Vision and Pattern Recognition · Computer Science 2025-07-03 Xinle Tian , Matthew Nunes , Emiko Dupont , Shaunagh Downing , Freddie Lichtenstein , Matt Burns

The absence of security and privacy measures between DNS recursive resolvers and authoritative nameservers has been exploited by both on-path and off-path attackers. Although numerous security proposals have been introduced in practice and…

Cryptography and Security · Computer Science 2025-06-27 Ali Sadeghi Jahromi , AbdelRahman Abdou , Paul C. van Oorschot

Global wireless networks enable mobile users to communicate regardless of their locations. Location management is an important part of the emerging wireless and mobile technology. A Personal Communication System (PCS) network must have an…

Data Analysis, Statistics and Probability · Physics 2007-05-23 Chhaya Ravi Kant , P. Arun , Nupur Prakash

Autonomous robot networks are an effective tool for monitoring large-scale environmental fields. This paper proposes distributed control strategies for localizing the source of a noisy signal, which could represent a physical quantity of…

Multiagent Systems · Computer Science 2014-04-14 Nikolay A. Atanasov , Jerome Le Ny , George J. Pappas

Wireless sensor networks (WSNs) have become one of the main research topics in computer science in recent years, primarily owing to the significant challenges imposed by these networks and their immense applicability. WSNs have been…

Networking and Internet Architecture · Computer Science 2018-08-17 Mabrook Al-Rakhami , Saleh Almowuena

We present a neural network for mitigating biased errors in pseudoranges to improve localization performance with data collected from mobile phones. A satellite-wise Multilayer Perceptron (MLP) is designed to regress the pseudorange bias…

Machine Learning · Computer Science 2023-12-25 Xu Weng , Keck Voon Ling , Haochen Liu

We propose a secure transmission scheme for a relay wiretap channel, where a source communicates with a destination via a decode-and-forward relay in the presence of spatially random-distributed eavesdroppers. We assume that the source is…

Information Theory · Computer Science 2016-11-17 Chenxi Liu , Nan Yang , Jinhong Yuan , Robert Malaney

Palmprint as biometrics has gained increasing attention recently due to its discriminative ability and robustness. However, existing methods mainly improve palmprint verification within one spectrum, which is challenging to verify across…

Computer Vision and Pattern Recognition · Computer Science 2023-08-02 Ziyuan Yang , Andrew Beng Jin Teoh , Bob Zhang , Lu Leng , Yi Zhang

Position verification in wireless sensor networks (WSNs) is quite tricky in presence of attackers (malicious sensor nodes), who try to break the verification protocol by reporting their incorrect positions (locations) during the…

Distributed, Parallel, and Cluster Computing · Computer Science 2011-05-06 Partha Sarathi Mandal , Anil K. Ghosh

We propose an optimal destination scheduling scheme to improve the physical layer security (PLS) of a power-line communication (PLC) based Internet-of-Things system in the presence of an eavesdropper. We consider a pinhole (PH) architecture…

Information Theory · Computer Science 2023-06-07 Chinmoy Kundu , Ankit Dubey , Andrea M. Tonello , Arumugam Nallanathan , Mark F. Flanagan

Privacy in Location-Based Services (LBS) has become a paramount concern with the ubiquity of mobile devices and the increasing integration of location data into various applications. This paper presents several novel contributions to…

Cryptography and Security · Computer Science 2024-09-24 Anis Bkakria , Reda Yaich

Recent data- and learning-based sound source localization (SSL) methods have shown strong performance in challenging acoustic scenarios. However, little work has been done on adapting such methods to track consistently multiple sources…

Audio and Speech Processing · Electrical Eng. & Systems 2023-06-06 David Diaz-Guerra , Archontis Politis , Tuomas Virtanen

Recent rapid development of sensor technology has allowed massive fine-grained time series (TS) data to be collected and set the foundation for the development of data-driven services and applications. During the process, data sharing is…

Machine Learning · Computer Science 2023-01-06 Li Zhang , Jiahao Ding , Yifeng Gao , Jessica Lin

In this paper we use the MAP criterion to locate a region containing a source. Sensors placed in a field of interest divide the latter into smaller regions and take measurements that are transmitted over noisy wireless channels. We propose…

Optimization and Control · Mathematics 2009-03-19 S. H. Dandach , F. Bullo

A novel private communication framework is proposed where privacy is induced by transmitting over a channel instances of linear inverse problems that are identifiable to the legitimate receiver but unidentifiable to an eavesdropper. The gap…

Information Theory · Computer Science 2024-07-24 Maxime Ferreira Da Costa , Jianxiu Li , Urbashi Mitra

Stream processing systems (SPSs) have been designed to process data streams in real-time, allowing organizations to analyze and act upon data on-the-fly, as it is generated. However, handling sensitive or personal data in these multilayered…

Cryptography and Security · Computer Science 2023-05-31 Mikhail Fomichev , Manisha Luthra , Maik Benndorf , Pratyush Agnihotri