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Discrete-Time Non-Zero-Sum Games With Completely Unknown Dynamics
Abstract:
In this article, off-policy reinforcement learning (RL) algorithm is established to solve the discrete-time N -player nonzero-sum (NZS) games with completely unknown dynamics. The N -coupled generalized algebraic Riccati equations (GARE) are derived, and then policy iteration (PI) algorithm is used to obtain the N -tuple of iterative control and iterative value function. As the system dynamics is necessary in PI algorithm, off-policy RL method is developed for discrete-time N -player NZS games. The off-policy N -coupled Hamilton-Jacobi (HJ) equation is derived based on quadratic value functions. According to the Kronecker product, the N -coupled HJ equation is decomposed into unknown parameter part and the system operation data part, which makes the N -coupled HJ equation solved independent of system dynamics. The least square is used to calculate the iterative value function and N -tuple of iterative control. The existence of Nash equilibrium is proved. The result of the proposed method for discrete-time unknown dynamics NZS games is indicated by the simulation examples.
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