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Author:Müller-Itten, Michèle 

Working Paper
Rational Inattention via Ignorance Equivalence

We present a novel approach to finite Rational Inattention (RI) models basedon the ignorance equivalent, a fictitious action with state-dependent payoffsthat effectively summarizes the optimal learning and conditional choices. Theignorance equivalent allows us to recast the RI problem as a standard expectedutility maximization over an augmented choice set called the learning-proofmenu, yielding new insights regarding the behavioral implications of RI, inparticular as new actions are added to the menu. Our geometric approach isalso well suited to numerical methods, outperforming existing ...
Working Papers , Paper 20-24

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