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Real-time Optimal Monetary Policy with Undistinguishable Model Parameters and Shock Processes Uncertainty

  • Alessandro Flamini

    ()

    ( Department of Economics, University of Sheffield, UK)

  • Costas Milas

    ()

    ( Department of Economics, Keele University, UK; Rimini Centre for Economic Analysis, Rimini, Italy)

This paper studies optimal real time monetary policy when the central bank takes the volatility of the output gap and inflation as proxy of the undistinguishable uncertainty on the exogenous disturbances and the parameters of its model. The paper shows that when the uncertainty surrounding a specific state variable increases, the optimal policy response to that variable should increase too while the optimal response to the remaining state variables should attenuate or be unaffected. In this way the central bank moves preemptively to reduce the risk of large deviations of the economy from the steady state that would deteriorate the distribution forecasts. When an empirical test is carried out on the US economy the model predictions tend to be consistent with the data.

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File URL: http://www.rcfea.org/RePEc/pdf/wp38_09.pdf
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Paper provided by The Rimini Centre for Economic Analysis in its series Working Paper Series with number 38_09.

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Date of creation: Jan 2009
Date of revision: Jan 2009
Handle: RePEc:rim:rimwps:38_09
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  1. Söderström, Ulf, 1999. "Monetary policy with uncertain parameters," SSE/EFI Working Paper Series in Economics and Finance 308, Stockholm School of Economics.
  2. Cinzia Alcidi & Alessandro Flamini & Andrea Fracasso, 2011. "Policy Regime Changes, Judgment and Taylor rules in the Greenspan Era," Economica, London School of Economics and Political Science, vol. 78(309), pages 89-107, January.
  3. Richard Clarida & Jordi Galí & Mark Gertler, 1997. "Monetary policy rules and macroeconomic stability: Evidence and some theory," Economics Working Papers 350, Department of Economics and Business, Universitat Pompeu Fabra, revised May 1999.
  4. Gali, Jordi & Gertler, Mark & David Lopez-Salido, J., 2005. "Robustness of the estimates of the hybrid New Keynesian Phillips curve," Journal of Monetary Economics, Elsevier, vol. 52(6), pages 1107-1118, September.
  5. Athanasios Orphanides & Simon van Norden, 2002. "The Unreliability of Output-Gap Estimates in Real Time," The Review of Economics and Statistics, MIT Press, vol. 84(4), pages 569-583, November.
  6. Arturo Estrella & Frederic Mishkin, 1998. "Rethinking the role of NAIRU in monetary policy: implications of model formulation and uncertainty," Research Paper 9806, Federal Reserve Bank of New York.
  7. Castelnuovo, Efrem, 2003. "Taylor rules, omitted variables, and interest rate smoothing in the US," Economics Letters, Elsevier, vol. 81(1), pages 55-59, October.
  8. Simon Hall & Chris Salmon & Tony Yates & Nicoletta Batini, 1999. "Uncertainty and Simple Monetary Policy Rules - An illustration for the United Kingdom," Bank of England working papers 96, Bank of England.
  9. John B. Taylor, 1999. "Introduction to "Monetary Policy Rules"," NBER Chapters, in: Monetary Policy Rules, pages 1-14 National Bureau of Economic Research, Inc.
  10. Hansen, Lars Peter & Heaton, John & Yaron, Amir, 1996. "Finite-Sample Properties of Some Alternative GMM Estimators," Journal of Business & Economic Statistics, American Statistical Association, vol. 14(3), pages 262-80, July.
  11. Athanasios Orphanides & Simon van Norden, 2003. "The Reliability of Inflation Forecasts Based on Output Gap Estimates in Real Time," CIRANO Working Papers 2003s-01, CIRANO.
  12. Amund Holmsen & Jan F. Qvigstad & Øistein Røisland & Kristin Solberg-Johansen, 2008. "Communicating monetary policy intentions: The case of Norges Bank," Working Paper 2008/20, Norges Bank.
  13. Christopher Martin & Costas Milas, 2005. "Uncertainty and Monetary Policy Rules in the United States," Economics and Finance Discussion Papers 05-22, Economics and Finance Section, School of Social Sciences, Brunel University.
  14. John B. Taylor, 1999. "A Historical Analysis of Monetary Policy Rules," NBER Chapters, in: Monetary Policy Rules, pages 319-348 National Bureau of Economic Research, Inc.
  15. Gerberding, Christina & Seitz, Franz & Worms, Andreas, 2005. "How the Bundesbank really conducted monetary policy," The North American Journal of Economics and Finance, Elsevier, vol. 16(3), pages 277-292, December.
  16. Jesús Fernández-Villaverde & Juan F. Rubio-Ramírez, 2008. "How Structural Are Structural Parameters?," NBER Chapters, in: NBER Macroeconomics Annual 2007, Volume 22, pages 83-137 National Bureau of Economic Research, Inc.
  17. Jeremy B. Rudd & Karl Whelan, 2001. "New tests of the New-Keynesian Phillips curve," Finance and Economics Discussion Series 2001-30, Board of Governors of the Federal Reserve System (U.S.).
  18. Hansen, Lars Peter, 1982. "Large Sample Properties of Generalized Method of Moments Estimators," Econometrica, Econometric Society, vol. 50(4), pages 1029-54, July.
  19. Sack, Brian, 2000. "Does the fed act gradually? A VAR analysis," Journal of Monetary Economics, Elsevier, vol. 46(1), pages 229-256, August.
  20. David Cobham & Christopher Adam, 2005. "Real-time output gaps in the estimation of Taylor rules: A red herring?," Money Macro and Finance (MMF) Research Group Conference 2005 42, Money Macro and Finance Research Group.
  21. John B. Taylor, 1999. "Monetary Policy Rules," NBER Books, National Bureau of Economic Research, Inc, number tayl99-1, October.
  22. Christopher A. Sims, 2002. "The Role of Models and Probabilities in the Monetary Policy Process," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 33(2), pages 1-62.
  23. Michael Woodford, 2003. "Optimal Interest-Rate Smoothing," Review of Economic Studies, Oxford University Press, vol. 70(4), pages 861-886.
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