You will never be the best on „Ms. Pac-Man” anymore

You will never be the best on „Ms. Pac-Man” anymore

All of us knows this old 1980s arcade gameMs. Pac-Man. And nobody could ever get the perfect 999,990 score on it. Now, it has been changed. Deep learning startup Maluuba has developed an AI system, which has achieved a perfect score. For the first time in Ms. Pac-Man history.

It could sound silly because actually using deep learning to develop programs that can win video games isn’t a new trick. Notwithstanding this fact, Maluuba accomplishment is a big deal for some reasons.
Ms. Pac-Man can look simple, but from algorithm point of view, the game is actually quite complicated. It is much less predictable than the original Pac-Man, which makes is tougher for players to beat it.

That’s why Maluuba took another approach to solve Ms. Pan-Man. Instead of developing one single intelligent agent to learn the game, Maluuba used 163 individual agents, to learn a single aspect of the game (e.g. 8 agents for ghosts, 1 for fruit, 154 for pellets behavior).

Each individual agent is focusing on the small part of the game and developing a course of action it thinks Ms.Pac -Man should follow. All these courses are then aggregated and weighted average of preferences from each agent. The program moves Ms. Pac-Man according to this decisions.

What is so revolutionary in this approach?

First of all, breaking up complex problems into smaller ones can make it much easier for deep learning system and allows to handle more complex behavior.

The researchers believe that this method could be implemented in real-world tasks in the future. As one of the researchers in a video explains „this advancement in reinforcement learning, can improve decision making in complex settings such as sales funnels, financial models or robotics.”

 

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