Girish Nair

Smoother Entropy for Active State Trajectory Estimation and Obfuscation in POMDPs

TL Molloy, GN Nair

Journal article  |  2023  |  IEEE Transactions on Automatic Control

We study the problem of controlling a partially observed Markov decision process (POMDP) to either aid or hinder the estimation of..

Zero-Error Feedback Capacity for Bounded Stabilization and Finite-State Additive Noise Channels

Amir Saberi, Farhad Farokhi, Girish N Nair

Journal article  |  2022  |  IEEE TRANSACTIONS ON INFORMATION THEORY

This article studies the zero-error feedback capacity of causal discrete channels with memory. First, by extending the classical z..

Granger causality from quantized measurements

S Ahmadi, GN Nair, E Weyer

Journal article  |  2022  |  Automatica

An approach is proposed for inferring Granger causality between jointly stationary, Gaussian signals from quantized data. First, a..

Bounded Estimation Over Finite-State Channels: Relating Topological Entropy and Zero-Error Capacity

Amir Saberi, Farhad Farokhi, Girish N Nair

Journal article  |  2022  |  IEEE TRANSACTIONS ON AUTOMATIC CONTROL

We investigate state estimation of linear systems over channels having a finite state not known by the transmitter or receiver. We..

JEM: Joint Entropy Minimization for Active State Estimation with Linear POMDP Costs

Timothy L Molloy, Girish N Nair

Conference Proceedings  |  2022  |  2022 AMERICAN CONTROL CONFERENCE (ACC)

Active state estimation is the problem of controlling a partially observed Markov decision process (POMDP) to minimize the uncerta..

Kalman Filtering for Discrete-Time Linear Systems with Infinite-Dimensional Observations

Maxwell M Varley, Timothy L Molloy, Girish N Nair

Conference Proceedings  |  2022  |  2022 AMERICAN CONTROL CONFERENCE (ACC)

Estimating the finite-dimensional state of dynamic systems using modern sensors such as cameras, lidar, and radar involves process..

Granger Causality of Gaussian Signals from Binary or Non-uniformly Quantized Measurements

Salman Ahmadi, Girish N Nair

Journal article  |  2021  |  IFAC PAPERSONLINE

This paper studies the assessment of Granger causality between jointly Gaussian sig -nals from binary/non-uniformly quantized meas..

Quantized control and data rate constraints

Girish Nair

Book Chapter  |  2021

The Encyclopedia of Systems and Control collects a broad range of short expository articles that describe the current state of the..

Non-Stochastic Private Function Evaluation

Farhad Farokhi, Girish Nair

Conference Proceedings  |  2021  |  2020 IEEE Information Theory Workshop (ITW)

We consider private function evaluation to provide query responses based on private data of multiple untrusted entities in such a ..

Identification of FIR Systems With Binary Input and Output Observations

Alex S Leong, Erik Weyer, Girish N Nair

Journal article  |  2021  |  IEEE TRANSACTIONS ON AUTOMATIC CONTROL

This article considers the identification of finite-impulse response systems, where information about the inputs and outputs of th..