How an AI robot broke the human world record in Maze, a classic marble maze game

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You’ve probably heard of AI winning against humans in games like chess and GO that require common sense. This is impressive but not shocking.

AI is good at crunching numbers and finding patterns.

But what about physical skills? That’s what humans are supposed to be better at, right? Well, not now.

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Cyber ​​Runner AI Robot (ETH Zurich)

An AI maze champion emerged.

Researchers at ETH Zurich have created an AI robot that learns how to play the popular wooden maze maze game. The objective of the game is simple, using two knobs, you have to move the marble ball from the start to the end point without falling into the holes on the board. But if you’ve ever played it, you know that’s really easy to say. The scientific explanation behind its difficulty is that it requires fine motor skills, spatial reasoning abilities and a lot of practice.

What is Artificial Intelligence (AI)?

Cyber ​​Runner AI Robot (ETH Zurich)

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Meet the new robot champion.

The robot, called CyberRunner, is equipped with two motors (its hands), a camera (its eyes) and a computer (its brain), which allows it to play games like a human would. Like a human, CyberRunner learns through experience, taking advantage of recent advances in model-based reinforcement learning, which allows AI to make decisions and choose the most likely successful course of action by predicting the outcomes of different courses of action. Enables.

Cyber ​​Runner AI Robot (ETH Zurich)

While playing the game, the cyber runner observes the maze and receives rewards based on his performance. It holds a memory of accumulated experience, or as we humans call it, “practice,” which the algorithm uses to learn how the system behaves.

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Based on this knowledge, it is able to identify the most promising behaviors. As a result, the robot’s use of the two motors continuously improves, and the CyberRunner improves each time the algorithm is run.

Diagram of Cyber ​​Runner AI robot learning and acting (ETH Zurich)

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Robots triumph in breaking human records

The robot practiced for 6.06 hours. Impressively, he beat the previous world record set by Lars Göran Danielsson, who set a time of 15.41 seconds in 2022. CyberRunner completed the game in 14.48 seconds — 6% faster than the human record holder.

Time to win CyberRunner AI robot (ETH Zurich)

During the learning process, the researchers say, the robots discover shortcuts and find ways to cheat — a behavior they are studying as an innate human trait. So, the researchers had to step in and instruct the Cyber ​​Runner not to leave certain parts of the maze.

A view of the ball’s trajectory through the maze by the CyberRunner AI robot (ETH Zurich)

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What can be learned from Cyber ​​Runner?

Researchers Thomas Bi and Raffaello D’Andrea are making the hardware and software of the robotic system open source so that others can benefit from and learn from their progress in achieving AI expertise. He wants to encourage other scientists and engineers to use his experience as an opportunity to do their own research. His research paper is available here for those interested.

Kurt’s key points

CyberRunner’s victory marks a major milestone in the field of artificial intelligence, showing that AI can now outperform humans not only in tasks involving information processing but also in physical skill games. me also. The project’s open source approach ensures that the benefits of this success are accessible to a wider audience, paving the way for further innovations in real-world machine learning and AI. As we see AI break new ground, the line between human and machine capabilities continues to blur.

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