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An Economy of Neural Networks: Learning from Heterogeneous Experiences

Artem Kuriksha

Papers from arXiv.org

Abstract: This paper proposes a new way to model behavioral agents in dynamic macro-financial environments. Agents are described as neural networks and learn policies from idiosyncratic past experiences. I investigate the feedback between irrationality and past outcomes in an economy with heterogeneous shocks similar to Aiyagari (1994). In the model, the rational expectations assumption is seriously violated because learning of a decision rule for savings is unstable. Agents who fall into learning traps save either excessively or save nothing, which provides a candidate explanation for several empirical puzzles about wealth distribution. Neural network agents have a higher average MPC and exhibit excess sensitivity of consumption. Learning can negatively affect intergenerational mobility.

Date: 2021-10
New Economics Papers: this item is included in nep-big, nep-cmp, nep-dge and nep-fdg
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