Games
Games are a perfect testbed for RL because they are created in order to challenge human capabilities, and, to complete them, skills common to the human brain are required (such as memory, reasoning, and coordination). Consequently, a computer that can play on the same level or better than a human must possess the same qualities. Moreover, games are easy to reproduce and can be easily simulated in computers. Video games proved to be very difficult to solve because of their partial observability (that is, only a fraction of the game is visible) and their huge search space (that is, it's impossible for a computer to simulate all possible configurations).
A breakthrough in games occurred when, in 2015, AlphaGo beat Lee Sedol in the ancient ...
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