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Geometric methods for finite rational inattention

Author

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  • Roc Armenter
  • Michèle Müller‐Itten
  • Zachary R. Stangebye

Abstract

We present a geometric approach to the finite Rational Inattention (RI) model, recasting it as a convex optimization problem with reduced dimensionality that is well suited to numerical methods. We provide an algorithm that outperforms existing RI computation techniques in terms of both speed and accuracy in both static and dynamic RI problems. We further introduce methods to quantify the impact of numerical inaccuracy on the model's outcomes and to produce robust predictions regarding the most frequently implemented actions.

Suggested Citation

  • Roc Armenter & Michèle Müller‐Itten & Zachary R. Stangebye, 2024. "Geometric methods for finite rational inattention," Quantitative Economics, Econometric Society, vol. 15(1), pages 115-144, January.
    • Handle: RePEc:wly:quante:v:15:y:2024:i:1:p:115-144
    DOI: 10.3982/QE2050
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    References listed on IDEAS

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    Cited by:

    1. Sergey Turlo & Matteo Fina & Johannes Kasinger & Arash Laghaie & Thomas Otter, 2025. "Discrete choice in marketing through the lens of rational inattention," Quantitative Marketing and Economics (QME), Springer, vol. 23(1), pages 45-104, March.

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