Video game players have competed against computer-controlled opponents for decades, but they haven't been as smart and fast as GT Sophy, the new AI driver on PlayStation's Gran Turismo.
SAN FRANCISCO — Speed around a French village in the video game Gran Turismo and you might spot a Corvette behind you trying to catch your slipstream.
Gran Turismo players have been competing against computer-generated race cars since the franchise launched in the 1990s, but the new AI driver that was unleashed last week on Gran Turismo 7 is smarter and faster because it's been trained using the latest AI methods. 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.
Amy Hoover, an assistant professor of informatics at the New Jersey Institute of Technology who's built algorithms for the digital card game Hearthstone, said "there really is a reason for studying games" but it is not always easy to explain. 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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