Action space refers to the set of all possible actions that an agent can take in a decision-making problem, especially within the context of dynamic programming and optimization. It plays a crucial role in defining the choices available at each state, influencing the overall strategy and outcomes in models such as those described by the Bellman equation. The structure of the action space can significantly impact the efficiency of finding optimal solutions.
congrats on reading the definition of Action Space. now let's actually learn it.