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#106 – Matt Botvinick: Neuroscience, Psychology, and AI at DeepMind
Lex Fridman Podcast
Dopamine and the Reward Prediction Error
Dopamine resembles a component of standard reinforcement learning algorithms, which is called the reward prediction error. If you made some prediction about a future reward and then you get more reward than you were expecting, then probably retrospectively you want to go back and increase the value representation that you attached to the earlier situation. And that's the process of temporal difference. This is the central mechanism of temporal difference learning in RL.
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