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How is the “reward matrix” used in Markov Decision Processes?
a) To determine the transition probabilities between states
b) To assign values to each possible state-action pair
c) To calculate the expected return time
d) To create a Markov Chain graph
The correct answer is:
b) A point in time when a decision must be made
In a Markov Decision Process (MDP), a decision epoch refers to a point in time when a decision or action must be taken to determine the next state of the system. It is typically associated with the moments in the process where an agent has to choose between different actions, based on the current state.