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Stability properties for learning with heterogeneous expectations and multiple equilibria

机译:具有异质期望和多重均衡的学习的稳定性

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摘要

This paper examines learning with heterogeneous expectations in a simple macroeconomic model with multiple equilibria where expectations are formed from heterogeneous forecast functions. Stability properties of the equilibria are determined by the distribution of heterogeneity. These results differ greatly from those which impose homogeneous expectations a priori. When the distribution of heterogeneity is allowed to vary, the stability conditions obtained guarantee that each equilibrium is stationary when it is stable under learning. The central result is that the two equilibria exchange stability when the mean squared error of using the simpler updating rule is minimized.
机译:本文在具有多个均衡的简单宏观经济模型中检验了具有异质期望的学习,其中期望是由异质预测函数形成的。平衡的稳定性由异质性的分布决定。这些结果与先验施加均等期望的结果大不相同。当允许异质性分布变化时,所获得的稳定性条件可保证每个平衡在学习过程中稳定时都是平稳的。中心结果是,当使用更简单的更新规则的均方误差最小时,两个平衡交换稳定性。

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