Summary #994

Reinforcement learning might be the best path to advanced AI, because it’s the same algorithm that brains use

technologyreview.com
  • Brains acquire skills through reinforcement learning -- like AI, but with dopamine instead of reward functions.
  • New research from DeepMind shows just how closely reinforcement-learning AI and brains are connected.
  • They’re attempting to explain the brain’s dopamine system through the lens of a new algorithm, which predicts rewards as a distribution (as opposed to a number).
  • After a test with mice, they found evidence that the brain does indeed use distributional reward predictions to improve its learning algorithm.
  • The fact that brains use it validates reinforcement learning as a promising path to advanced AI, and opens up new avenues for neuroscientific research.

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