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For questions related to reinforcement learning, i.e. a machine learning technique where we imagine an agent that interacts with an environment (composed of states) in time steps by taking actions and receiving rewards (or reinforcements), then, based on these interactions, the agent tries to find a policy (i.e. a behavioural strategy) that maximizes the cumulative reward (in the long run), so the goal of the agent is to maximize the reward.

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Why are state transitions in MDPs probabilistic rather than deterministic?

I've read that for MDPs the state transition function $P_a(s, s')$ is a probability. This seems strange to me for modeling because most environments (like video games) are deterministic. Now, I'd lik …
personjerry's user avatar