  In this paper, we will deal with a Linear Quadratic Optimal Control problem
with unknown dynamics. As a modeling assumption, we will suppose that the
knowledge that an agent has on the current system is represented by a
probability distribution $\pi$ on the space of matrices. Furthermore, we will
assume that such a probability measure is opportunely updated to take into
account the increased experience that the agent obtains while exploring the
environment, approximating with increasing accuracy the underlying dynamics.
Under these assumptions, we will show that the optimal control obtained by
solving the "average" Linear Quadratic Optimal Control problem with respect to
a certain $\pi$ converges to the optimal control driven related to the Linear
Quadratic Optimal Control problem governed by the actual, underlying dynamics.
This approach is closely related to model-based Reinforcement Learning
algorithms where prior and posterior probability distributions describing the
knowledge on the uncertain system are recursively updated. In the last section,
we will show a numerical test that confirms the theoretical results.
