Clever Machines Learn How to Be Curious
Quanta Magazine by John Pavlus
In Quanta. Machines Learn to be Curious.
The University of California, Berkeley's Pulkit Agrawal is embedding curiosity, or intrinsic motivation, into artificial intelligence (AI) so machines can learn unfamiliar tasks more efficiently. "You can think of curiosity as a kind of reward, which the agent generates internally on its own, so that it can go explore more about its world," Agrawal says. His team at the Berkeley Artificial Intelligence Research Lab have developed a learning agent with an intrinsic curiosity module (ICM) so it can learn to play a video game. Their model is young children's innate curiosity in objects that surprise them, mimicked by the ICM's generation of an intrinsic reward signal defined by how mistaken the prediction model is. Agrawal says this reward for being surprised creates a feedback loop enabling the AI to correct its ignorance. The AI also translates visual input from raw pixels into an abstract version of reality, highlighting environmental features with the potential to affect the agent. .... "
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