[CTN] CTN seminar: Xaq Pitkow (Rice) 3:30 Wednesday Nov 20, E7 7363

[Bryan Tripp]

Just a final reminder about the talk this afternoon at 3:30.

Bryan

On Tue, Nov 12, 2019 at 8:06 AM Bryan Tripp <bptripp at gmail.com> wrote:

> Hi everyone,
>
> Please join us for a CTN seminar next Wednesday afternoon (not Tuesday
> this time). Details below.
>
> Bryan
>
> Rational thoughts in neural codes
> Xaq Pitkow, Rice University (Houston)
> 3:30 Wednesday Nov 20, E7 7363
>
> Abstract: Complex behaviors are often driven by an internal model, which
> integrates sensory information over time and facilitates long-term planning
> to reach subjective goals. We interpret behavioral data by assuming an
> agent behaves rationally — that is, they take actions that optimize their
> subjective reward according to their understanding of the task and its
> relevant causal variables. We apply a new method, Inverse Rational Control
> (IRC), to learn an agent’s internal model and reward function by maximizing
> the likelihood of its measured sensory observations and actions. This
> thereby extracts rational and interpretable thoughts of the agent from its
> behavior. We also provide a framework for interpreting encoding, recoding
> and decoding of neural data in light of this rational model for behavior.
> When applied to behavioral and neural data from simulated agents performing
> suboptimally on a naturalistic foraging task, this method successfully
> recovers their internal model and reward function, as well as the
> computational dynamics within the neural manifold that represents the task.
> This work lays a foundation for discovering how the brain represents and
> computes with dynamic beliefs.
>
>
>
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