Race the Sony Gran Turismo AI that beats the best human players

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In a few hours, Sony will let all Gran Turismo players face off against GT Sophy, the AI ​​opponent who has defeated the world’s best car racing video game players.

A test period of what Sony calls the GT Sophy Race Together mode begins at 10 p.m. PT Monday (1 a.m. ET Tuesday) with a free update to Gran Turismo 7, the most recent version of the venerable PlayStation game. It will let you race a quartet of GT Sophy AI opponents on four of GT7’s dozen courses until the end of March.

In short, Sony is improving its computer opponent, a move that should give human gamers a much better and more challenging game, says Peter W├╝rman, director of Sony AI America and head of the GT Sophy project. The four tracks cover a range of difficulty levels and you can play head-to-head against GT Sophy in identical cars for the greatest challenge.

“We hope this gives them a much more realistic driving racing experience so they have competitors that feel more human at all skill levels,” Wurman said. GT7’s standard computer opponent goes beyond mid-level skills, but GT Sophy takes it a step further without requiring players to enter the “Wild West” of online gaming to find good human opponents, he said.

Even though it’s only a month-long test, it’s a big deal in the gaming world – and maybe beyond. Sony hopes to eventually add AI opponents not just to Gran Turismo but to other video games. And the same reason AI skills work in a car racing video game could mean you’ll encounter the technology in real life.

“It’s an example of how some of these technologies can help empower humans,” said Lareina Yeesenior partner in a consulting firm McKinsey. So maybe forklift operators or farmers will learn from robots. “These technologies can help speed up training, especially when specific skills and expertise are required,” she said.

AI is all the rage right now, with OpenAI’s ChatGPT showing a new level of understanding and creativity, Microsoft integrating chatbot technology into its Bing search engine, and Google cooking up its own competitor, Bard. These use a technology called the Big Language Model – which produces embarrassing gaffes as well as impressive utility – but Sony’s AI uses a different approach called reinforcement learning.

Different AI techniques than ChatGPT

Reinforcement learning, like most AI techniques today, uses a foundation called a neural network inspired by the human brain. A training phase “teaches” the neural network to recognize patterns, then an inference phase uses that network to make decisions, such as how fast a car should turn around a bend.

An AI-driven racing car, Sophy Violette, chases another bot, Sophy Verte, in Sony’s Gran Turismo 7 video game. Four AI cars with varying abilities challenge a human driver in the game.

Sony; Screenshot by Stephen Shankland/CNET

Sony trained its GT Sophy by pitting its AI against 20 PlayStations running around the clock, Wurman said. The bots controlled acceleration, braking and steering, just like a human player. Instead of using the handheld controller or steering wheel accessory that human racers hold, the bots used a computer interface that fed control data into the GT7 game 10 times per second.

Reinforcement learning then handed out rewards to a bot for doing the right thing, such as completing a lap or passing an opponent, Wurman said. Punishments discourage other actions like running into walls or colliding with other cars.

This reinforcement learning technique is what allowed Google subsidiary DeepMind to win all 57 classic Atari video games and then later outplay humans in the more difficult real-time strategy game StarCraft II. .

Not just academic

DeepMind researchers, who have also built AIs that beat humans at the game of Go and tackled the notoriously difficult computer problem of predicting how chains of molecules fold into different proteins, have produced some impressive academic research. But GT Sophy technology has not only claimed a prestigious place on the cover of the scientific journal Nature in 2022, but to appear in your living room game console.

For Sony, reinforcement learning means the GT Sophy can learn the intricacies of game physics, such as how aerodynamics change when following another car or leading the pack, said Michael SprangerCOO of Sony AI and author of several academic papers.

“What’s interesting about an AI breakthrough is that there are layers of complexity on top of it. You have to engage with other drivers, and so you have to learn how to overtake,” a- he declared. “If you’re behind a car, your top speed increases, but it also takes longer to brake.”

But there is still a higher level: the unwritten rules of racing. “It’s a very loosely defined thing, but you’ll be punished if you don’t follow etiquette,” Spanger said. Human gamers would be irritated if GT Sophy violated the standards that evolved in the real world and simply avoided playing against GT Sophy.

After just one day of training, GT Sophy bots were better than 95% of human players. With 10 or 12 more days of training, the robots could beat the best human GT7 players.

An AI-driven racing car, Sophy Violette, overtakes a human-driven competitor in Sony's Gran Turismo 7 video game.

An AI-driven racing car, Sophy Violette, overtakes a human-driven competitor in Sony’s Gran Turismo 7 video game.

Sony; Screenshot by Stephen Shankland/CNET

GT Sophy will only last a few weeks this round, but expect the AI ​​opponent to return at some point.

“It gives us a chance to let hundreds of thousands of players experience it and get feedback and figure out how to revise it for next time,” Wurman said. “We obviously have an interest in releasing this permanently in-game.”

Watch a human race against GT Sophy

To show me, Wurman — a computer researcher who, like Springer, holds a Ph.D. – sat behind a Thrustmaster steering wheel and pedal car controllers, took off his shoes for better sensitivity and fired up GT7. He was driving a white Acura Integra, starting in fourth place after three differently colored Sophy GT cars and looking warily in the rearview mirror at the best of the bots, Sophy Violette.

The cars all have the same Sophy AI driver, but Sony places them in cars of varying abilities to provide an array of challengers, Spranger said. The company is considering different riding personalities, something you’d see racing against humans, but isn’t willing to detail its plans there.

Wurman overtook the Sophy small cars. But of course, Sophy Violette exceeded it. As I watched, however, Wurman came through again and beat Sophy Violette for the first time. His air of exultant triumph was as real as if he had vanquished any longtime human rival.

Editors’ note: CNET uses an AI engine to create personal finance explanations that are edited and verified by our editors. To learn more, see this post.

 
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Anyone can Create a new Facebook account. if you want Create a Facebook account
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If you are new to this social networking platform then… Create a Facebook profile It can be stressful for you. So here are some tips to help you get started with Facebook:

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if you want it now Create a new Facebook account Using your phone number instead of your email address, you need to follow these steps:

Go to facebook.com and click Create New Account.

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Here we will learn how to create a new Facebook gmail account on computer, and here are the necessary steps:

Turn on the computer and launch the browser.

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Your gmail (which we created earlier).

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When using your phone to create a new Facebook Gmail account, you must first Download the Facebook app from Google Play
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