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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

Today’s NYT Connections: Sports Edition Hints and Answers for Feb. 7, #502

Here are hints and the answers for the NYT Connections: Sports Edition puzzle for Feb. 7, No. 502.

Looking for the most recent regular 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 and Strands puzzles.


Today’s Connections: Sports Edition features a fun batch of categories. The purple one requires you to find hidden words inside some of the grid words, but they’re not too obscure. If you’re struggling with today’s puzzle but still want to solve it, read on for hints and the answers.

Connections: Sports Edition is published by The Athletic, the subscription-based sports journalism site owned by The Times. It doesn’t appear in the NYT Games app, but it does in The Athletic’s own app. Or you can play it for free online.

Read more: NYT Connections: Sports Edition Puzzle Comes Out of Beta

Hints for today’s Connections: Sports Edition groups

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

Yellow group hint: Golden Gate.

Green group hint: It’s «Shotime!»

Blue group hint: Same first name.

Purple group hint: Tweak a team name.

Answers for today’s Connections: Sports Edition groups

Yellow group: Bay Area teams.

Green group: Associated with Shohei Ohtani.

Blue group: Coaching Mikes.

Purple group: MLB teams, with the last letter changed.

Read more: Wordle Cheat Sheet: Here Are the Most Popular Letters Used in English Words

What are today’s Connections: Sports Edition answers?

The yellow words in today’s Connections

The theme is Bay Area teams. The four answers are 49ers, Giants, Sharks and Valkyries.

The green words in today’s Connections

The theme is associated with Shohei Ohtani. The four answers are Decoy, Dodgers, Japan and two-way.

The blue words in today’s Connections

The theme is coaching Mikes. The four answers are Macdonald, McCarthy, Tomlin and Vrabel.

The purple words in today’s Connections

The theme is MLB teams, with the last letter changed. The four answers are Angelo (Angels), Cuba (Cubs), redo (Reds) and twine (Twins).

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Technologies

Today’s NYT Mini Crossword Answers for Saturday, Feb. 7

Here are the answers for The New York Times Mini Crossword for Feb. 7

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


Need some help with today’s Mini Crossword? It’s Saturday, so it’s a long one, and a few of the clues are tricky. Read on for all the answers. And if you could use some hints and guidance for daily solving, check out our Mini Crossword tips.

If you’re looking for today’s Wordle, Connections, Connections: Sports Edition and Strands answers, you can visit CNET’s NYT puzzle hints page.

Read more: Tips and Tricks for Solving The New York Times Mini Crossword

Let’s get to those Mini Crossword clues and answers.

Mini across clues and answers

1A clue: Lock lips
Answer: KISS

5A clue: Italian author of «Inferno,» «Purgatorio» and «Paradiso»
Answer: DANTE

6A clue: Cerebral ___ (part of the brain)
Answer: CORTEX

7A clue: Leave home with a stuffed pillowcase as luggage, perhaps
Answer: RUNAWAY

8A clue: No more for me, thanks»
Answer: IMGOOD

9A clue: Fancy fabrics
Answer: SILKS

10A clue: Leg joint
Answer: KNEE

Mini down clues and answers

1D clue: Bars sung in a bar
Answer: KARAOKE

2D clue: How the animals boarded Noah’s Ark
Answer: INTWOS

3D clue: Stand in good ___
Answer: STEAD

4D clue: Smokin’ hot
Answer: SEXY

5D clue: Computer attachment
Answer: DONGLE

6D clue: Yotam Ottolenghi called it «the one spice I could never give up»
Answer: CUMIN

7D clue: Hazard
Answer: RISK

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Technologies

Astronauts Can Now Use the Latest Smartphones in Space

Two upcoming missions could see astronauts using smartphones to capture lunar selfies and more.

Astronauts will now be able to bring modern smartphones on space missions, according to a tweet this week from NASA administrator Jared Isaacman. Isaacman said the policy will begin with SpaceX Crew-12 and Artemis II.

The SpaceX Crew-12 mission is scheduled to launch Feb. 11 and will carry four astronauts to the International Space Station. NASA’s Artemis II mission is expected to launch in March; it will send four astronauts on a 10-day flight that will circle the Moon and return to Earth.

«We are giving our crews the tools to capture special moments for their families and share inspiring images and video with the world,» Isaacman wrote. 

An Apple representative noted in an email to CNET that this was «the first time [the] iPhone has been fully qualified for extended use in orbit and beyond.»

«Until now, astronauts were largely limited to legacy cameras and older imaging equipment,» the spokesperson said.

NASA did not mention specific phone brands or models in its tweet.

Ars Technica reported that space missions currently use 2016 Nikon DSLR and GoPro cameras. 

Photography has played an important role in space missions since the Apollo missions of the 1960s and 1970s. Apollo 11 astronauts, the first humans to step on the moon, captured iconic photographs of their famed July 1969 mission with specially modified Hasselblad cameras.

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