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Curr Opin Behav Sci. 2016 Oct;11:67-73.

Reinforcement learning with Marr.

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Psychology Department & Princeton Neuroscience Institute, Princeton University, Princeton, New Jersey, 08540.


To many, the poster child for David Marr's famous three levels of scientific inquiry is reinforcement learning-a computational theory of reward optimization, which readily prescribes algorithmic solutions that evidence striking resemblance to signals found in the brain, suggesting a straightforward neural implementation. Here we review questions that remain open at each level of analysis, concluding that the path forward to their resolution calls for inspiration across levels, rather than a focus on mutual constraints.

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