Information-Theoretic Bounded Rationality

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• Pedro Ortega, University of Pennsylvania
• Tuesday 22 March 2016, 10:15-11:15
• Auditorium, Microsoft Research Ltd, 21 Station Road, Cambridge, CB1 2FB.

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In this talk I provide an overview of information-theoretic bounded-rationality for planning in sequential decision problems. I show how to ground the theory on a stochastic computation model for large-scale choice spaces and then derive the free energy functional as the associated vibrational principle for characterizing bounded-rational decisions. These decision processes have three important properties: they trade off utility and decision complexity; they give rise to an equivalence class of behaviourally indistinguishable decision problems; and they possess natural stochastic choice algorithms. I will discuss a general class of bounded-rational sequential planning problems that encompasses some well- known classical planning algorithms as limit cases (such as Expectimax and Minimax), as well as trust- and risk-sensitive planning. Finally, I will point out formal connections to Bayesian inference and to regret theory.

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