Dr. Marco Gamarra Profile

Dr. Marco Gamarra

at Air Force Research Lab - Rome

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Proceedings Article | 12 June 2023 Presentation + Paper

Adversary decision-making using Markov models

Elizabeth Andreas, Jessica Dorismond, Marco Gamarra

Proceedings Volume 12538, 125380I (2023) https://doi.org/10.1117/12.2655223

KEYWORDS: Decision making, Mathematical modeling, Stochastic processes, Process modeling, Air force, Computer simulations, Artificial intelligence, Complex adaptive systems

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This study conducts three experiments on adversary decision-making modeled as a graph. Each experiment has the overall goal to understand how to exploit an adversary’s decision-making in order to obtain desired outcomes, as well as specific goals unique to each experiment. The first experiment models adversary decision-making using an Absorbing Markov chain (AMC). A sensitivity analysis of states (nodes in the graph) and actions (edges in the graph) is conducted which informs how downstream adversary decisions could be manipulated. The next experiment uses a Markov decision process (MDP). Assuming the adversary is initially blind to the rewards they will receive when they take an action, a Q´learning algorithm is used to determine the sequence of actions that maximizes the adversary rewards (called an optimum policy). This experiment gives insight in the possible decision-making of an adversary. Lastly, in the third experiment a two-player Markov game is developed, played by an agent (friend) and the adversary (foe). The agents goal is to decrease the overall rewards the adversary receives when it follows optimum policy. All experiments are demonstrated using specific examples.

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