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In this paper, we study a variant of the dynamic ridesharing problem with a specific focus on peak hours: Given a set of drivers and rider requests, we aim to match drivers to each rider request by achieving two objectives: maximizing the…

Databases · Computer Science 2020-04-07 Hui Luo , Zhifeng Bao , Farhana M. Choudhury , J. Shane Culpepper

By ensuring differential privacy in the learning algorithms, one can rigorously mitigate the risk of large models memorizing sensitive training data. In this paper, we study two algorithms for this purpose, i.e., DP-SGD and DP-NSGD, which…

Machine Learning · Computer Science 2022-06-28 Xiaodong Yang , Huishuai Zhang , Wei Chen , Tie-Yan Liu

Access patterns to data stored remotely create a side channel that is known to leak information even if the content of the data is encrypted. To protect against access pattern leakage, Oblivious RAM is a cryptographic primitive that…

Cryptography and Security · Computer Science 2024-06-14 William Holland , Olga Ohrimenko , Anthony Wirth

While becoming more and more present in our every day lives, services that operate on users' locations or location trajectories suffer from general fear of misappropriation of the transmitted location data. Several works have investigated…

Cryptography and Security · Computer Science 2018-04-27 Michael Guldner , Torsten Spieldenner , René Schubotz

Oblivious RAM (ORAM) is a cryptographic primitive which obfuscates the access patterns to a storage thereby preventing privacy leakage. So far in the current literature, only `fully functional' ORAMs are widely studied which can protect, at…

Hardware Architecture · Computer Science 2017-09-12 Syed Kamran Haider , Marten van Dijk

Autonomous Unmanned Aerial Vehicles (UAVs) have become essential tools in defense, law enforcement, disaster response, and product delivery. These autonomous navigation systems require a wireless communication network, and of late are deep…

Cryptography and Security · Computer Science 2024-04-29 Vatsal Aggarwal , Arjun Ramesh Kaushik , Charanjit Jutla , Nalini Ratha

A cooperative Sense and Avoid (SAA) algorithm for safe navigation of small-sized UAVs within an airspace is proposed in this paper. The proposed method relies upon cooperation between the UAV and the surrounding transponder-equipped…

Signal Processing · Electrical Eng. & Systems 2024-03-26 Mostafa Mohammadkarimi , Raj Thilak Rajan

Deep learning models are increasingly popular in many machine learning applications where the training data may contain sensitive information. To provide formal and rigorous privacy guarantee, many learning systems now incorporate…

Machine Learning · Computer Science 2021-03-19 Xiangyi Chen , Zhiwei Steven Wu , Mingyi Hong

The *shuffle model* is a powerful tool to amplify the privacy guarantees of the *local model* of differential privacy. In contrast to the fully decentralized manner of guaranteeing privacy in the local model, the shuffle model requires a…

Cryptography and Security · Computer Science 2022-06-22 Hao Wu , Olga Ohrimenko , Anthony Wirth

Deterministic methods for motion planning guarantee safety amidst uncertainty in obstacle locations by trying to restrict the robot from operating in any possible location that an obstacle could be in. Unfortunately, this can result in…

Robotics · Computer Science 2023-06-21 Jinsun Liu , Challen Enninful Adu , Lucas Lymburner , Vishrut Kaushik , Lena Trang , Ram Vasudevan

While machine learning has become pervasive in as diversified fields as industry, healthcare, social networks, privacy concerns regarding the training data have gained a critical importance. In settings where several parties wish to…

Cryptography and Security · Computer Science 2023-04-07 Arnaud Grivet Sébert , Martin Zuber , Oana Stan , Renaud Sirdey , Cédric Gouy-Pailler

Accurate localization is essential for enabling modern full self-driving services. These services heavily rely on map-based traffic information to reduce uncertainties in recognizing lane shapes, traffic light locations, and traffic signs.…

Widespread deployment of RFID system arises security and privacy concerns of users. There are several proposals are in the literature to avoid these concerns, but most of them provides reasonable privacy at the cost of search complexity on…

Cryptography and Security · Computer Science 2018-01-03 Pramod Kumar Maurya , Satya Bagchi

Oblivious RAM protocols (ORAMs) allow a client to access data from an untrusted storage device without revealing the access patterns. Typically, the ORAM adversary can observe both read and write accesses. Write-only ORAMs target a more…

Cryptography and Security · Computer Science 2019-08-20 Anrin Chakraborti , Radu Sion

This paper studies how a stochastic gradient algorithm (SG) can be controlled to hide the estimate of the local stationary point from an eavesdropper. Such problems are of significant interest in distributed optimization settings like…

Machine Learning · Computer Science 2024-05-14 Adit Jain , Vikram Krishnamurthy

In the Online-Dial-a-Ride Problem (OLDARP) a server travels through a metric space to serve requests for rides. We consider a variant where each request specifies a source, destination, release time, and revenue that is earned for serving…

Data Structures and Algorithms · Computer Science 2019-12-16 Ananya Christman , Christine Chung , Nicholas Jaczko , Tianzhi Li , Scott Westvold , Xinyue Xu

Single occupancy vehicles are the most attractive transportation alternative for many commuters, leading to increased traffic congestion and air pollution. Advancements in information technologies create opportunities for smart solutions…

Machine Learning · Computer Science 2023-04-10 Dimitris M. Vlachogiannis , Hua Wei , Scott Moura , Jane Macfarlane

Ridesharing services play an essential role in modern transportation, which significantly reduces traffic congestion and exhaust pollution. In the ridesharing problem, improving the sharing rate between riders can not only save the travel…

Databases · Computer Science 2024-12-12 Jiexi Zhan , Yu Chen , Peng Cheng , Lei Chen , Wangze Ni , Xuemin Lin

The optimal control of a "blind" pursuer searching for an evader moving on a road network and heading at a known speed toward a set of goal vertices is considered. To aid the "blind" pursuer, certain roads in the network have been…

Optimization and Control · Mathematics 2014-09-30 K. Krishnamoorthy , D. Casbeer , P. Chandler , M. Pachter

The recent surge in the vehicle market has led to an alarming increase in road accidents. This underscores the critical importance of enhancing road safety measures, particularly for vulnerable road users like motorcyclists. Hence, we…