no code implementations • 21 Apr 2022 • Prithvi Akella, Anushri Dixit, Mohamadreza Ahmadi, Joel W. Burdick, Aaron D. Ames
The dramatic increase of autonomous systems subject to variable environments has given rise to the pressing need to consider risk in both the synthesis and verification of policies for these systems.
no code implementations • 20 Apr 2022 • Anushri Dixit, Mohamadreza Ahmadi, Joel W. Burdick
This paper studies the problem of risk-averse receding horizon motion planning for agents with uncertain dynamics, in the presence of stochastic, dynamic obstacles.
no code implementations • 29 Mar 2022 • Andrew Singletary, Mohamadreza Ahmadi, Aaron D. Ames
To this end, we introduce risk control barrier functions (RCBFs), which are compositions of barrier functions and dynamic, coherent risk measures.
no code implementations • 22 Mar 2022 • Anushri Dixit, Mohamadreza Ahmadi, Joel W. Burdick
This paper studies the problem of distributionally robust model predictive control (MPC) using total variation distance ambiguity sets.
no code implementations • 4 Mar 2022 • Prithvi Akella, Mohamadreza Ahmadi, Aaron D. Ames
With the growing interest in deploying robots in unstructured and uncertain environments, there has been increasing interest in factoring risk into safety-critical control development.
no code implementations • 9 Sep 2021 • Mohamadreza Ahmadi, Ugo Rosolia, Michel D. Ingham, Richard M. Murray, Aaron D. Ames
In this paper, we consider the problem of designing policies for MDPs and POMDPs with objectives and constraints in terms of dynamic coherent risk measures, which we refer to as the constrained risk-averse problem.
no code implementations • 26 Mar 2021 • Mohamadreza Ahmadi, Anushri Dixit, Joel W. Burdick, Aaron D. Ames
We consider the stochastic shortest path planning problem in MDPs, i. e., the problem of designing policies that ensure reaching a goal state from a given initial state with minimum accrued cost.
no code implementations • 4 Dec 2020 • Mohamadreza Ahmadi, Ugo Rosolia, Michel D. Ingham, Richard M. Murray, Aaron D. Ames
We consider the problem of designing policies for Markov decision processes (MDPs) with dynamic coherent risk objectives and constraints.
no code implementations • 23 Nov 2020 • Anushri Dixit, Mohamadreza Ahmadi, Joel W. Burdick
We consider the problem of risk-sensitive motion planning in the presence of randomly moving obstacles.
no code implementations • 10 Aug 2020 • Bo Wu, Niklas Lauffer, Mohamadreza Ahmadi, Suda Bharadwaj, Zhe Xu, Ufuk Topcu
The proposed framework relies on assigning a classification belief (a probability distribution) to the attributes of interest.
no code implementations • 5 Feb 2020 • Mohamadreza Ahmadi, Arun A. Viswanathan, Michel D. Ingham, Kymie Tan, Aaron D. Ames
Technology development efforts in autonomy and cyber-defense have been evolving independently of each other, over the past decade.
no code implementations • 21 Jan 2020 • Mohamadreza Ahmadi, Rangoli Sharan, Joel W. Burdick
Partially observable Markov decision processes (POMDPs) provide a modeling framework for autonomous decision making under uncertainty and imperfect sensing, e. g. robot manipulation and self-driving cars.
no code implementations • 27 Sep 2019 • Mohamadreza Ahmadi, Masahiro Ono, Michel D. Ingham, Richard M. Murray, Aaron D. Ames
We consider the problem of designing policies for partially observable Markov decision processes (POMDPs) with dynamic coherent risk objectives.
no code implementations • 28 Sep 2018 • Mohamadreza Ahmadi, Murat Cubuktepe, Nils Jansen, Sebastian Junges, Joost-Pieter Katoen, Ufuk Topcu
Then, the deception problem is to compute a strategy for the deceiver that minimizes the expected cost of deception against all strategies of the infiltrator.