Technologies

Sony AI outraces humans in Gran Turismo car racing game

Using a bank of 1,000 PlayStation 4 consoles as a virtual training ground, Sony taught an artificial intelligence system to outplay the best humans.

Over the last two years, Sony AI trained a computer system to play Polyphony Digital’s Gran Turismo Sport, a popular and realistic car racing game, and beat some of the world’s best human competitors, Sony said on Wednesday.

The AI, named GT Sophy, defeated top humans only in time trials when there were no other cars on the track during a July competition. But by October, GT Sophy beat the humans even with a scrum of virtual race cars.

GT Sophy is the latest experiment demonstrating that AI can be victorious at games such as chess and Go, which were long thought to be the domain of human intelligence. AI has also beaten people at classic Atari video games and the Starcraft real-time strategy game.

AI today generally refers to a process for programming computers using a technology known as neural networks, which mimic the way human brains work. Sony’s achievement is notable enough to warrant a research paper in the prestigious journal Nature.

A car racing video game, like Gran Turismo, presents open-ended tactical choices as well as simulated rules of physics. GT Sophy picked new ways to approach them, one of the human competitors said.

«The AI drives in a way that we would never have come up with,» said Takuma Miyazono, who won three challenges in the FIA Gran Turismo 2020 World Finals, speaking in a video. He said GT Sophy’s tactics made sense when he saw it drive.

Many AI systems are trained with real-world data through a system called deep learning that gives them the ability to recognize faces and to spot spam. GT Sophy used a different technique called reinforcement learning that starts with an entirely untrained system that has no idea what to do. It raced courses over and over again, following a human-designed reward system that encouraged better results and eventually mastered the game.

One particular difficulty was figuring out the unwritten rules of car racing, such as avoiding collisions and not inappropriately cutting off other drivers.

«We all underestimated how hard it would be to get the sportsmanship side right,» said Sony AI Director Peter Wurman in the video. «To do that without being overly aggressive or overly timid in the face of competitors.»

Sony AI ran simulations on computers connected to a bank of more than 1,000 PlayStation 4 game consoles.

As is common in AI, Sony trained its versions of Sophy GT using fast graphics chips. To run the simulations, it used computers with conventional processors.

Technologies

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Technologies

Today’s NYT Strands Hints, Answers and Help for May 20, #443

Here are hints and answers for the NYT Strands puzzle No. 443 for May 20.

Looking for the most recent Strands answer? Click here for our daily Strands hints, as well as our daily answers and hints for The New York Times Mini Crossword, Wordle, Connections and Connections: Sports Edition puzzles.

Today’s NYT Strands puzzle reminds me that I haven’t had a meal in a fancy restaurant in some time. Maybe it’s time to make a reservation. If you need hints and answers, read on.

I go into depth about the rules for Strands in this story.

If you’re looking for today’s Wordle, Connections and Mini Crossword answers, you can visit CNET’s NYT puzzle hints page.

Read more: NYT Connections Turns 1: These Are the 5 Toughest Puzzles So Far

Hint for today’s Strands puzzle

Today’s Strands theme is: Oh, of course!

If that doesn’t help you, here’s a clue: Elegant eats.

Clue words to unlock in-game hints

Your goal is to find hidden words that fit the puzzle’s theme. If you’re stuck, find any words you can. Every time you find three words of four letters or more, Strands will reveal one of the theme words. These are the words I used to get those hints but any words of four or more letters that you find will work:

SITE, FINE, SINE, DINE, PEAS, TEEN, PEER, STEEP, DEER, SEED, SEEN, POET, TREE, NOPE, SEES.

Answers for today’s Strands puzzle

These are the answers that tie into the theme. The goal of the puzzle is to find them all, including the spangram, a theme word that reaches from one side of the puzzle to the other. When you have all of them (I originally thought there were always eight but learned that the number can vary), every letter on the board will be used. Here are the nonspangram answers:

SOUP, SALAD, CHEESE, ENTREE, DESSERT, APPETIZERS

Today’s Strands spangram

Today’s Strands spangram is FINEDINING. To find it, start with the F that’s three letters down on the farthest row to the left, and wind across.

Toughest Strands puzzles

Here are some of the Strands topics I’ve found to be the toughest in recent weeks.

#1: Dated slang, Jan. 21. Maybe you didn’t even use this lingo when it was cool. Toughest word: PHAT.

#2: Thar she blows! Jan.15. I guess marine biologists might ace this one. Toughest word: BALEEN or RIGHT.

#3: Off the hook, Jan. 9. Similar to the Jan. 15 puzzle in that it helps to know a lot about sea creatures. Sorry, Charlie. Toughest word: BIGEYE or SKIPJACK

Technologies

Today’s NYT Connections Hints, Answers and Help for May 24, #713

Hints and answers for Connections for May 24, #713.

Looking for the most recent Connections answers? Click here for today’s Connections hints, as well as our daily answers and hints for The New York Times Mini Crossword, Wordle, Connections: Sports Edition and Strands puzzles.

Today’s Connections puzzle has a fun variety of categories. The purple one appeals to my English major heart. Read on for clues and today’s Connections answers.

The Times now has a Connections Bot, like the one for Wordle. Go there after you play to receive a numeric score and to have the program analyze your answers. Players who are registered with the Times Games section can now nerd out by following their progress, including number of puzzles completed, win rate, number of times they nabbed a perfect score and their win streak.

Read more: Hints, Tips and Strategies to Help You Win at NYT Connections Every Time

Hints for today’s Connections groups

Here are four hints for the groupings in today’s Connections puzzle, ranked from the easiest yellow group, to the tough (and sometimes bizarre) purple group.

Yellow group hint: Goo-goo.

Green group hint: Not shirts.

Blue group hint: City that never sleeps.

Purple group hint: Acclaimed writers.