803 citations · 2.6k across the 256 of their papers we have counts for
31 papers · 2 filters
Age of Information with Age-Dependent Server Selection
Nail Akar, Ismail Cosandal, Sennur Ulukus
In this paper, we consider a single-source multi-server generate-at-will discrete-time non-preemptive status update system where update packets are transmitted using {\em only one}…
Semi-Markov Decision Process Framework for Age of Incorrect Information Minimization
Ismail Cosandal, Sennur Ulukus, Nail Akar
For a remote estimation system, we study age of incorrect information (AoII), which is a recently proposed semantic-aware freshness metric. In particular, we assume an information…
Neural Beamforming with Doppler-Aware Sparse Attention for High Mobility Environments
Cemil Vahapoglu, Timothy J. O'Shea, Wan Liu +1
Beamforming has significance for enhancing spectral efficiency and mitigating interference in multi-antenna wireless systems, facilitating spatial multiplexing and diversity in den…
Optimal Source Coding of Markov Chains for Real-Time Remote Estimation
Ismail Cosandal, Sennur Ulukus
We revisit the source coding problem for a Markov chain under the assumption that the transmission times and how fast the Markov chain transitions its state happen at the same time…
Quantum Private Distributed Matrix Multiplication: Extending the Classical Codes and Limitations
Mohamed Nomeir, Alptug Aytekin, Lei Hu +1
In this paper, we explore how quantum resources can be used to increase the rate of private distributed matrix multiplication (PDMM). In PDMM, a user who has two high-dimensional m…
Age of Job Completion Minimization with Stable Queues
Stavros Mitrolaris, Subhankar Banerjee, Sennur Ulukus
We consider a time-slotted job-assignment system with a central server, N users and a machine which changes its state according to a Markov chain (hence called a Markov machine). T…
Effect of Full Common Randomness Replication in Symmetric PIR on Graph-Based Replicated Systems
Shreya Meel, Sennur Ulukus
We revisit the problem of symmetric private information retrieval (SPIR) in settings where the database replication is modeled by a simple graph. Here, each vertex corresponds to a…
Multi-Agent Distributed Optimization With Feasible Set Privacy
Shreya Meel, Sennur Ulukus
We consider the problem of decentralized constrained optimization with multiple agents who jointly wish to learn the optimal solution set while keeping their feasi…
Deriving Moments in the Age of Gossip Process from Percolation
Thomas Jacob Maranzatto, Sennur Ulukus
This paper concerns fundamental identities in the study of age of information (AoI) in gossip networks. We recover known recursive identities for arbitrary kth moments of the age p…
What If, But Privately: Private Counterfactual Retrieval
Shreya Meel, Mohamed Nomeir, Pasan Dissanayake +2
Transparency and explainability are two important aspects to be considered when employing black-box machine learning models in high-stake applications. Providing counterfactual exp…
Age of Estimates: When to Submit Jobs to a Markov Machine to Maximize Revenue
Sahan Liyanaarachchi, Sennur Ulukus
With the dawn of AI factories ushering a new era of computing supremacy, development of strategies to effectively track and utilize the available computing resources is garnering u…
The Capacity of Semantic Private Information Retrieval with Colluding Servers
Mohamed Nomeir, Alptug Aytekin, Sennur Ulukus
We study the problem of semantic private information retrieval (Sem-PIR) with colluding servers (Sem-TPIR), i.e., servers that collectively share user queries. In Sem-TPIR, the…
Symmetric Private Information Retrieval (SPIR) on Graph-Based Replicated Systems
Shreya Meel, Sennur Ulukus
We introduce the problem of symmetric private information retrieval (SPIR) on replicated databases modeled by a simple graph. In this model, each vertex corresponds to a server, an…
Structured Estimators: A New Perspective on Information Freshness
Sahan Liyanaarachchi, Sennur Ulukus, Nail Akar
In recent literature, when modeling for information freshness in remote estimation settings, estimators have been mainly restricted to the class of martingale estimators, meaning t…
Timely Tracking of a Wiener Process With Single Bit Quantization
Ismail Cosandal, Sahan Liyanaarachchi, Sennur Ulukus
We consider the problem of timely tracking of a Wiener process via an energy-conserving sensor by utilizing a single bit quantization strategy under periodic sampling. Contrary to…
New Capacity Bounds for PIR on Graph and Multigraph-Based Replicated Storage
Xiangliang Kong, Shreya Meel, Thomas Jacob Maranzatto +2
In this paper, we study the problem of private information retrieval (PIR) in both graph-based and multigraph-based replication systems, where each file is stored on exactly two se…
Information Freshness in Dynamic Gossip Networks
Arunabh Srivastava, Thomas Jacob Maranzatto, Sennur Ulukus
We consider a source that shares updates with a network of gossiping nodes. The network's topology switches between two arbitrary topologies, with switching governed by a two-s…
Transformer-Driven Neural Beamforming with Imperfect CSI in Urban Macro Wireless Channels
Cemil Vahapoglu, Timothy J. O'Shea, Wan Liu +2
The literature is abundant with methodologies focusing on using transformer architectures due to their prominence in wireless signal processing and their capability to capture long…
Minimizing Functions of Age of Incorrect Information for Remote Estimation
Ismail Cosandal, Sennur Ulukus, Nail Akar
The age of incorrect information (AoII) process which keeps track of the time since the source and monitor processes are in sync, has been extensively used in remote estimation pro…
Source Coding for a Wiener Process
Sahan Liyanaarachchi, Ismail Cosandal, Sennur Ulukus
We develop a novel source coding strategy for sampling and monitoring of a Wiener process. For the encoding process, we employ a four level ``quantization'' scheme, which employs m…
How to Maximize Efficiency in Systems with Exhausted Workers
Elif Beray Sariisik, Melih Bastopcu, Nail Akar +1
We consider the problem of assigning tasks efficiently to a set of workers that can exhaust themselves as a result of processing tasks. If a worker is exhausted, it will take a lon…
Equidistant-Sample or Wait-and-Sample to Minimize Age Under Sampling Constraint?
Subhankar Banerjee, Sennur Ulukus
We study a status update system with a source, a sampler, a transmitter, and a monitor. The source governs a stochastic process that the monitor wants to observe in a timely manner…
Tracking and Assigning Jobs to a Markov Machine
Subhankar Banerjee, Sennur Ulukus
We consider a time-slotted communication system with a machine, a cloud server, and a sampler. Job requests from the users are queued on the server to be completed by the machine.…
Distributed Offloading in Multi-Access Edge Computing Systems: A Mean-Field Perspective
Shubham Aggarwal, Muhammad Aneeq uz Zaman, Melih Bastopcu +2
Multi-access edge computing (MEC) technology is a promising solution to assist power-constrained IoT devices by providing additional computing resources for time-sensitive tasks. I…