Reinforcement Learning in Macroeconomic Policy Design: A New Frontier?
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Agent-based computational macroeconomics is a field with a rich academic history, yet one which has struggled to enter mainstream policy design toolboxes, plagued by the challenges associated with representing a complex and dynamic reality. The field of Reinforcement Learning (RL), too, has a rich history, and has recently been at the centre of several exponential developments. Modern RL implementations have been able to achieve unprecedented levels of sophistication, handling previously-unthinkable degrees of complexity. This review surveys the historical barriers of classical agent-based techniques in macroeconomic modelling, and contemplates whether recent developments in RL can overcome any of them.
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