DeepMind's AI succeeds in learning rudimentary physics like babies
A research team led by Luis Pilot, a computer scientist at DeepMind, an AI company under the umbrella of Google, is inspired by research on how to learn babies and gives artificial intelligence (AI) a simple physical law from the behavior of objects. After learning, he announced that he succeeded in astonishing AI to confirm the phenomenon that violated the rule.
Intuitive physics learning in a deep-learning model inspired by developmental psychology | Nature Human Behavior
DeepMind AI learns simple physics like a baby
https://www.nature.com/articles/d41586-022-01921-7
For example, if you roll the ball many times in front of your baby, your baby will learn the simple physics of 'the ball rolls and moves on the floor.' On top of that, if you show an image that suddenly disappears while the ball is rolling, the baby will be surprised. This 'surprise' is measured by looking in the direction in which the ball was originally rolling for a long time.
The baby's experiment was conducted in a study of developmental psychology, but Piloto and his team conducted a similar test on an AI model called Physics Learning through Auto-encoding and Tracking Objects (PLATO). This PLATO is designed to be able to internally express physical characteristics such as the position and velocity of an object.
The research team spent about 30 hours learning how the ball rolls on a slope and how the two balls bounce off. In addition to the video, I also entered a version that emphasized the objects in the video.
As a result, PLATO learned 'continuity' in which an object follows an orbit without interruption, 'stiffness' in which two objects do not penetrate each other, and 'sustainability' in which the shape of an object remains unchanged. 'In short, PLATO predicts what will happen next by watching the video. The more you watch the video, the more accurate the prediction,' said Pirot.
Then, when PLATO who learned the rudimentary laws of physics like a baby is shown a video of an impossible phenomenon that the ball suddenly disappears, PLATO will compare the difference between the video and his prediction. He said he showed a 'surprise' reaction.
The researchers suggest that PLATO wasn't designed as a behavioral model for young children in the first place, so AI could test the hypothesis of how human babies learn. 'We expect cognitive scientists to use AI to seriously model infant behavior,' said Pirot.
Jeff Clune, a computer scientist at the University of British Columbia, said, 'The direction of the study to compare AI and baby learning methods is important. Pilot's study is a priori knowledge that gives the AI model an edge. Many are designed by hand. '
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