Search Results for author: Samrat Chatterjee

Found 8 papers, 1 papers with code

Assessing the Impact of Distribution Shift on Reinforcement Learning Performance

no code implementations5 Feb 2024 Ted Fujimoto, Joshua Suetterlein, Samrat Chatterjee, Auroop Ganguly

We then apply these tools to single-agent and multi-agent environments to show the impact of introducing distribution shifts during test time.

reinforcement-learning Reinforcement Learning (RL) +1

A Tri-Level Optimization Model for Interdependent Infrastructure Network Resilience Against Compound Hazard Events

no code implementations16 Oct 2023 Matthew R. Oster, Ilya Amburg, Samrat Chatterjee, Daniel A. Eisenberg, Dennis G. Thomas, Feng Pan, Auroop R. Ganguly

Here, our notional operator may choose proxy actions to operate an interdependent system comprised of fuel terminals and gas stations (functioning as supplies) and a transportation network with traffic flow (functioning as demand) to minimize unmet demand at gas stations.

Deep Reinforcement Learning for Cyber System Defense under Dynamic Adversarial Uncertainties

no code implementations3 Feb 2023 Ashutosh Dutta, Samrat Chatterjee, Arnab Bhattacharya, Mahantesh Halappanavar

Development of autonomous cyber system defense strategies and action recommendations in the real-world is challenging, and includes characterizing system state uncertainties and attack-defense dynamics.

reinforcement-learning Reinforcement Learning (RL)

AdverSAR: Adversarial Search and Rescue via Multi-Agent Reinforcement Learning

no code implementations20 Dec 2022 Aowabin Rahman, Arnab Bhattacharya, Thiagarajan Ramachandran, Sayak Mukherjee, Himanshu Sharma, Ted Fujimoto, Samrat Chatterjee

Search and Rescue (SAR) missions in remote environments often employ autonomous multi-robot systems that learn, plan, and execute a combination of local single-robot control actions, group primitives, and global mission-oriented coordination and collaboration.

Meta-Learning Multi-agent Reinforcement Learning +2

Extending Conformal Prediction to Hidden Markov Models with Exact Validity via de Finetti's Theorem for Markov Chains

1 code implementation5 Oct 2022 Buddhika Nettasinghe, Samrat Chatterjee, Ramakrishna Tipireddy, Mahantesh Halappanavar

Conformal prediction is a widely used method to quantify the uncertainty of a classifier under the assumption of exchangeability (e. g., IID data).

Conformal Prediction valid

Ad Hoc Teamwork in the Presence of Adversaries

no code implementations9 Aug 2022 Ted Fujimoto, Samrat Chatterjee, Auroop Ganguly

Advances in ad hoc teamwork have the potential to create agents that collaborate robustly in real-world applications.

Lorenz System State Stability Identification using Neural Networks

no code implementations16 Jun 2021 Megha Subramanian, Ramakrishna Tipireddy, Samrat Chatterjee

We then test the ability of the neural network models to identify the stable and unstable states on a different Lorenz system that is generated using different initial conditions.

Decision Making

Constraints Satisfiability Driven Reinforcement Learning for Autonomous Cyber Defense

no code implementations19 Apr 2021 Ashutosh Dutta, Ehab Al-Shaer, Samrat Chatterjee

With the increasing system complexity and attack sophistication, the necessity of autonomous cyber defense becomes vivid for cyber and cyber-physical systems (CPSs).

Decision Making reinforcement-learning +1

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