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Middle East and Central Asia > Qatar

You are looking at 1 - 2 of 2 items for :

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Cover IMF Working Papers
AI and Macroeconomic Modeling: Deep Reinforcement Learning in an RBC model
Tohid Atashbar
and
Rui Aruhan Shi
This study seeks to construct a basic reinforcement learning-based AI-macroeconomic simulator. We use a deep RL (DRL) approach (DDPG) in an RBC macroeconomic model. We set up two learning scenarios, one of which is deterministic without the technological shock and the other is stochastic. The objective of the deterministic environment is to compare the learning agent's behavior to a deterministic steady-state scenario. We demonstrate that in both deterministic and stochastic scenarios, the agent's choices are close to their optimal value. We also present cases of unstable learning behaviours. This AI-macro model may be enhanced in future research by adding additional variables or sectors to the model or by incorporating different DRL algorithms.
Keywords:
Reinforcement learning; Deep reinforcement learning; Artificial intelligence; RL; DRL; Learning algorithms; Macro modeling; RBC; Real business cycles; DDPG; Deep deterministic policy gradient; Actor-critic algorithms; RBC model; AI-macroeconomic simulator; AI experiment; learning algorithm; Machine learning; Rational expectations; Debt relief; Global
Cover IMF Working Papers
Shocks to Inflation Expectations
Mr. Philip Barrett
and
Jonathan J. Adams
The consensus among central bankers is that higher inflation expectations can drive up inflation today, requiring tighter policy. We assess this by devising a novel method for identifying shocks to inflation expectations, estimating a semi-structural VAR where an expectation shock is identified as that which causes measured expectations to diverge from rationality. Using data for the United States, we find that a positive inflation expectations shock is deflationary and contractionary: inflation, output, and interest rates all fall. These results are inconsistent with the standard New Keynesian model, which predicts inflation and interest rate hikes. We discuss possible resolutions to this new puzzle.
Keywords:
Inflation; Sentiments; Expectations; Monetary Policy; inflation expectation; interest rate hike; sentiment shock; forecasted inflation; expectations multiplier; inflation impulse; Inflation; Neoclassical theory; Rational expectations; Vector autoregression; Machine learning