Robustness and ambiguity in continuous time
AbstractWe use statistical detection theory in a continuous-time environment to provide a new perspective on calibrating a concern about robustness or an aversion to ambiguity. A decision maker repeatedly confronts uncertainty about state transition dynamics and a prior distribution over unobserved states or parameters. Two continuous-time formulations are counterparts of two discrete-time recursive specifications of Hansen and Sargent (2007) . One formulation shares features of the smooth ambiguity model of Klibanoff et al. (2005) and (2009)  and . Here our statistical detection calculations guide how to adjust contributions to entropy coming from hidden states as we take a continuous-time limit.
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Bibliographic InfoArticle provided by Elsevier in its journal Journal of Economic Theory.
Volume (Year): 146 (2011)
Issue (Month): 3 (May)
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Web page: http://www.elsevier.com/locate/inca/622869
Ambiguity Robustness Hidden Markov model Likelihood function Entropy Statistical detection error Smooth ambiguity;
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- Corbae, Dean & Marimon, Ramon, 2011. "Introduction to Incompleteness and Uncertainty in Economics," Journal of Economic Theory, Elsevier, vol. 146(3), pages 775-784, May.
- Jaroslav Borovicka & Lars Peter Hansen, 2011.
"Examining Macroeconomic Models Through the Lens of Asset Pricing,"
2011-012, Becker Friedman Institute for Research In Economics.
- Jaroslav Borovicka & Lars Hansen, 2012. "Examining macroeconomic models through the lens of asset pricing," Working Paper Series WP-2012-01, Federal Reserve Bank of Chicago.
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