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Bayesian Networks and Boundedly Rational Expectations*

delete2016-03-07
delete54
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OA
AI
R
Ran Spiegler *
DOI:10.1093/qje/qjw011delete
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摘要

摘要

En 中文
I present a framework for analyzing decision making under imperfect understanding of correlation structures and causal relations. A decision maker (DM) faces an objective long-run probability distribution p over several variables (including the action taken by previous DMs). The DM is characterized by a subjective causal model, represented by a directed acyclic graph over the set of variable labels. The DM attempts to fit this model to p, resulting in a subjective belief that distorts p by factorizing it according to the graph via the standard Bayesian network formula. As a result of this belief distortion, the DM's evaluation of actions can vary with their long-run frequencies. Accordingly, I define a personal equilibrium notion of individual behavior. The framework enables simple graphical representations of causal-attribution errors (such as coarseness or reverse causation), and provides tools for checking rationality properties of the DM's behavior. I demonstrate the framework's scope of applications with examples covering diverse areas, from demand for education to public policy. JEL Code: D03.
Keyword:
MODEL
EQUILIBRIUM
INFORMATION
GAMES

期刊

Quarterly Journal of Economics 封面图
Quarterly Journal of Economics
IF:
12.7
论文数:
1.2K
被引数:
4.1W

机构

T
Tel Aviv University
学者数:
3.7W
论文数: 3.0W
被引数: 3.6W
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