This paper examines monetary policy in Rudebusch and Svensson's (1999) two equation macroeconomic model when the policymaker recognizes that the model is an approximation and is uncertain about the quality of that approximation. It is argued that the minimax approach of robust control provides a general and tractable alternative to the conventional Bayesian decision theoretic approach. Robust control techniques are used to construct robust monetary policies. In most (but not all) cases, these robust policies are more aggressive than the optimal policies absent model uncertainty. The specific robust policies depend strongly on the formation of model uncertainty used, and we make some suggestions about which formulation is most relevant for monetary policy applications.
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Paper provided by National Bureau of Economic Research, Inc in its series NBER Working Papers with number
7490.
Length: Date of creation: Jan 2000 Date of revision: Handle: RePEc:nbr:nberwo:7490
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Find related papers by JEL classification: E58 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Central Banks and Their Policies C53 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Forecasting and Other Model Applications
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Glenn Rudebusch & Lars E.O. Svensson, 1999.
"Policy Rules for Inflation Targeting,"
NBER Chapters,
in: Monetary Policy Rules, pages 203-262
National Bureau of Economic Research, Inc.
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