Speed around a French village in the video game Grand Turismo and you might spot a Corvette behind you trying to catch your slipstream.
The technique of using the draft of an opponent’s racecar to speed up and overtake them is one favored by skilled players of PlayStation’s realistic racing game.
“Grand Turismo had a built-in AI existing from the beginning of the game, but it has a very narrow band of performance and it isn’t very good,” said Michael Spranger, chief operating officer of Sony AI. “It’s very predictable. Once you get past a certain level, it doesn’t really entice you anymore.
Initially, AI was used on games like checkers and chess to test at winning strategy games. Now a new branch of research is more focused on performing open-ended tasks in complex worlds and interacting with humans, not just for the purpose of beating them. Microsoft, which owns the popular Minecraft game franchise as well as the Xbox game system, has tasked AI agents with a variety of activities — from steering clear of lava to chopping trees and making furnaces. Researchers hope some of their learnings could eventually play a role in real-world technology, such as how to get a home robot to take on certain chores without having to program it to do so.
“People aren’t always understanding that the point is about the optimization method rather than the game,” she said. The technology behind Sophy is based on an algorithmic method known as reinforcement learning, which trains the system by rewarding it when it gets something right as it runs virtual races thousands of times.
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