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Robustifying learnability

  • Robert J. Tetlow
  • Peter von zur Muehlen

In recent years, the learnability of rational expectations equilibria (REE) and determinacy of economic structures have rightfully joined the usual performance criteria among the sought-after goals of policy design. Some contributions to the literature, including Bullard and Mitra (2001) and Evans and Honkapohja (2002), have made significant headway in establishing certain features of monetary policy rules that facilitate learning. However a treatment of policy design for learnability in worlds where agents have potentially misspecified their learning models has yet to surface. This paper provides such a treatment. We begin with the notion that because the profession has yet to settle on a consensus model of the economy, it is unreasonable to expect private agents to have collective rational expectations. We assume that agents have only an approximate understanding of the workings of the economy and that their learning the reduced forms of the economy is subject to potentially destabilizing perturbations. The issue is then whether a central bank can design policy to account for perturbations and still assure the learnability of the model. Our test case is the standard New Keynesian business cycle model. For different parameterizations of a given policy rule, we use structured singular value analysis (from robust control theory) to find the largest ranges of misspecifications that can be tolerated in a learning model without compromising convergence to an REE.

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Paper provided by Board of Governors of the Federal Reserve System (U.S.) in its series Finance and Economics Discussion Series with number 2005-58.

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Date of creation: 2005
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Handle: RePEc:fip:fedgfe:2005-58
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  1. N/A, 1986. "Chapter II. The World Economy," National Institute Economic Review, National Institute of Economic and Social Research, vol. 116(1), pages 19-30, May.
  2. James Bullard & Stefano Eusepi, 2003. "Did the Great Inflation Occur Despite Policymaker Commitment to a Taylor Rule?," Computing in Economics and Finance 2003 129, Society for Computational Economics.
  3. McCallum, Bennett T., 1983. "On non-uniqueness in rational expectations models : An attempt at perspective," Journal of Monetary Economics, Elsevier, vol. 11(2), pages 139-168.
  4. Alexei Onatski & Noah Williams, 2003. "Modeling Model Uncertainty," Journal of the European Economic Association, MIT Press, vol. 1(5), pages 1087-1122, 09.
  5. Kaushik Mitra & Seppo Honkapohja, 2004. "Learning Stability in Economies with Heterogenous Agents," Royal Holloway, University of London: Discussion Papers in Economics 04/17, Department of Economics, Royal Holloway University of London, revised Jul 2004.
  6. N/A, 1986. "Chapter I. the Home Economy," National Institute Economic Review, National Institute of Economic and Social Research, vol. 115(1), pages 6-26, February.
  7. Orphanides, Athanasios & Porter, Richard D. & Reifschneider, David & Tetlow, Robert & Finan, Frederico, 2000. "Errors in the measurement of the output gap and the design of monetary policy," Journal of Economics and Business, Elsevier, vol. 52(1-2), pages 117-141.
  8. Mark Gertler & Jordi Gali & Richard Clarida, 1999. "The Science of Monetary Policy: A New Keynesian Perspective," Journal of Economic Literature, American Economic Association, vol. 37(4), pages 1661-1707, December.
  9. Woodford, Michael, 2000. "Optimal Monetary Policy Inertia," Seminar Papers 666, Stockholm University, Institute for International Economic Studies.
  10. Clarida, Richard & Gali, Jordi & Gertler, Mark, 1997. "Monetary Policy Rules in Practice: Some International Evidence," Working Papers 97-32, C.V. Starr Center for Applied Economics, New York University.
  11. Giannoni, Marc P., 2002. "Does Model Uncertainty Justify Caution? Robust Optimal Monetary Policy In A Forward-Looking Model," Macroeconomic Dynamics, Cambridge University Press, vol. 6(01), pages 111-144, February.
  12. Walsh, Carl E., 2005. "Parameter misspecification and robust monetary policy rules," Working Paper Series 0477, European Central Bank.
  13. Ehrmann, M. & Smets, F., 2001. "Uncertain Potential Output: Implications for Monetary Policy," Papers 59, Quebec a Montreal - Recherche en gestion.
  14. Bruce McGough & George Evans, 2004. "Optimal Constrained Interest Rate Rules," Computing in Economics and Finance 2004 134, Society for Computational Economics.
  15. Andrew T.. Levin & Volker Wieland & John Williams, 1999. "Robustness of Simple Monetary Policy Rules under Model Uncertainty," NBER Chapters, in: Monetary Policy Rules, pages 263-318 National Bureau of Economic Research, Inc.
  16. Ben S. Bernanke & Julio J. Rotemberg, 1997. "NBER Macroeconomics Annual 1997, Volume 12," NBER Books, National Bureau of Economic Research, Inc, number bern97-1, September.
  17. Evans, George W. & McGough, Bruce, 2003. "Monetary policy, indeterminacy and learning," CFS Working Paper Series 2003/37, Center for Financial Studies (CFS).
  18. George W. Evans & Seppo Honkapohja & Noah Williams, 2010. "Generalized Stochastic Gradient Learning," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 51(1), pages 237-262, 02.
  19. Williams, John C. & Levin, Andrew T. & Wieland, Volker, 2001. "The performance of forecast-based monetary policy rules under model uncertainty," Working Paper Series 0068, European Central Bank.
  20. N/A, 1980. "Chapter II. The Home Economy," National Institute Economic Review, National Institute of Economic and Social Research, vol. 92(1), pages 18-32, May.
  21. Honkapohja, Seppo & Evans, George W., 2000. "Expectations and the stability problem for optimal monetary policies," Discussion Paper Series 1: Economic Studies 2000,10, Deutsche Bundesbank, Research Centre.
  22. N/A, 1986. "Chapter I. The Home Economy," National Institute Economic Review, National Institute of Economic and Social Research, vol. 116(1), pages 5-18, May.
  23. N/A, 1986. "Chapte II. the World Economy," National Institute Economic Review, National Institute of Economic and Social Research, vol. 115(1), pages 27-43, February.
  24. Bernanke, Ben S & Woodford, Michael, 1997. "Inflation Forecasts and Monetary Policy," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 29(4), pages 653-84, November.
  25. Söderström, Ulf, 1999. "Monetary policy with uncertain parameters," Working Paper Series 83, Sveriges Riksbank (Central Bank of Sweden).
  26. Michael Woodford, 2003. "Optimal Interest-Rate Smoothing," Review of Economic Studies, Oxford University Press, vol. 70(4), pages 861-886.
  27. Robert J. Tetlow & Peter von zur Muehlen, 1999. "Simplicity versus optimality the choice of monetary policy rules when agents must learn," Finance and Economics Discussion Series 1999-10, Board of Governors of the Federal Reserve System (U.S.).
  28. J. Tetlow, Robert & von zur Muehlen, Peter, 2001. "Robust monetary policy with misspecified models: Does model uncertainty always call for attenuated policy?," Journal of Economic Dynamics and Control, Elsevier, vol. 25(6-7), pages 911-949, June.
  29. -, 1980. "Economic relations of Latin America with Europe," Cuadernos de la CEPAL, Naciones Unidas Comisión Económica para América Latina y el Caribe (CEPAL), number ns.n. edited by Cepal.
  30. Onatski, Alexei & Stock, James H., 2002. "Robust Monetary Policy Under Model Uncertainty In A Small Model Of The U.S. Economy," Macroeconomic Dynamics, Cambridge University Press, vol. 6(01), pages 85-110, February.
  31. Hansen, Lars Peter & Sargent, Thomas J., 2003. "Robust control of forward-looking models," Journal of Monetary Economics, Elsevier, vol. 50(3), pages 581-604, April.
  32. Giordani, Paolo & Soderlind, Paul, 2004. "Solution of macromodels with Hansen-Sargent robust policies: some extensions," Journal of Economic Dynamics and Control, Elsevier, vol. 28(12), pages 2367-2397, December.
  33. N/A, 1986. "Chapter II. The World Economy," National Institute Economic Review, National Institute of Economic and Social Research, vol. 118(1), pages 18-29, November.
  34. George W. Evans & Seppo Honkapohja, 2002. "Monetary Policy, Expectations and Commitment," University of Oregon Economics Department Working Papers 2005-11, University of Oregon Economics Department, revised 06 Apr 2005.
  35. Thomas Lubik & Frank Schorfheide, 2002. "Testing for Indeterminacy:An Application to U.S. Monetary Policy," Economics Working Paper Archive 480, The Johns Hopkins University,Department of Economics, revised Jun 2003.
  36. George W. Evans & Seppo Honkapohja, 2002. "Adaptive Learning and Monetary Policy Design," University of Oregon Economics Department Working Papers 2002-18, University of Oregon Economics Department, revised 04 Mar 2004.
  37. Latsis,, 1980. "Method and Appraisal in Economics," Cambridge Books, Cambridge University Press, number 9780521280501, Junio.
  38. Blanchard, Olivier Jean & Kahn, Charles M, 1980. "The Solution of Linear Difference Models under Rational Expectations," Econometrica, Econometric Society, vol. 48(5), pages 1305-11, July.
  39. Bray, Margaret M & Savin, Nathan E, 1986. "Rational Expectations Equilibria, Learning, and Model Specification," Econometrica, Econometric Society, vol. 54(5), pages 1129-60, September.
  40. Marcet, Albert & Nicolini, Juan Pablo, 1998. "Recurrent Hyperinflations and Learning," CEPR Discussion Papers 1875, C.E.P.R. Discussion Papers.
  41. Julio Rotemberg & Michael Woodford, 1997. "An Optimization-Based Econometric Framework for the Evaluation of Monetary Policy," NBER Chapters, in: NBER Macroeconomics Annual 1997, Volume 12, pages 297-361 National Bureau of Economic Research, Inc.
  42. Ben S. Bernanke & Julio J. Rotemberg, 1997. "Editorial in "NBER Macroeconomics Annual 1997, Volume 12"," NBER Chapters, in: NBER Macroeconomics Annual 1997, Volume 12, pages 1-6 National Bureau of Economic Research, Inc.
  43. Taylor, John B., 1993. "Discretion versus policy rules in practice," Carnegie-Rochester Conference Series on Public Policy, Elsevier, vol. 39(1), pages 195-214, December.
  44. Nicoletta Batini & Joseph Pearlman, 2002. "Too Much Too Soon: Instability and Indeterminacy with Forward-Looking Rules," Discussion Papers 08, Monetary Policy Committee Unit, Bank of England.
  45. Giannitsarou, Chryssi, 2005. "E-Stability Does Not Imply Learnability," Macroeconomic Dynamics, Cambridge University Press, vol. 9(02), pages 276-287, April.
  46. Marvin Goodfriend & Robert King, 1997. "The New Neoclassical Synthesis and the Role of Monetary Policy," NBER Chapters, in: NBER Macroeconomics Annual 1997, Volume 12, pages 231-296 National Bureau of Economic Research, Inc.
  47. James B. Bullard & Kaushik Mitra, 2003. "Determinacy, learnability, and monetary policy inertia," Working Papers 2000-030, Federal Reserve Bank of St. Louis.
  48. N/A, 1980. "Calendar of Economic Events April—June 1980," National Institute Economic Review, National Institute of Economic and Social Research, vol. 93(1), pages 80-82, August.
  49. Bullard, James & Mitra, Kaushik, 2002. "Learning about monetary policy rules," Journal of Monetary Economics, Elsevier, vol. 49(6), pages 1105-1129, September.
  50. N/A, 1980. "Chapter III. The World Economy," National Institute Economic Review, National Institute of Economic and Social Research, vol. 93(1), pages 36-48, August.
  51. Volker Wieland & Andrew Levin & John C. Williams, 1999. "The Performance of Forward-Looking Monetary Policy Rules under Model Uncertainty," Computing in Economics and Finance 1999 1153, Society for Computational Economics.
  52. N/A, 1986. "Chapter I. The Home Economy," National Institute Economic Review, National Institute of Economic and Social Research, vol. 118(1), pages 6-17, November.
  53. Coenen, Gunter, 2007. "Inflation persistence and robust monetary policy design," Journal of Economic Dynamics and Control, Elsevier, vol. 31(1), pages 111-140, January.
  54. Lubik, Thomas A. & Schorfheide, Frank, 2003. "Computing sunspot equilibria in linear rational expectations models," Journal of Economic Dynamics and Control, Elsevier, vol. 28(2), pages 273-285, November.
  55. N/A, 1980. "Chapter II. The Home Economy," National Institute Economic Review, National Institute of Economic and Social Research, vol. 94(1), pages 31-46, November.
  56. N/A, 1980. "Chapter III. The World Economy," National Institute Economic Review, National Institute of Economic and Social Research, vol. 94(1), pages 47-61, November.
  57. Prachowny,Martin F. J., 1986. "Money in the Macroeconomy," Cambridge Books, Cambridge University Press, number 9780521315944, Junio.
  58. N/A, 1980. "Chapter I. The Economy in 1979," National Institute Economic Review, National Institute of Economic and Social Research, vol. 91(1), pages 8-26, February.
  59. Kenneth Rogoff, 1985. "The Optimal Degree of Commitment to an Intermediate Monetary Target," The Quarterly Journal of Economics, Oxford University Press, vol. 100(4), pages 1169-1189.
  60. N/A, 1980. "Chapter I. The World Economy," National Institute Economic Review, National Institute of Economic and Social Research, vol. 92(1), pages 6-17, May.
  61. N/A, 1980. "Chapter II. The Home Economy," National Institute Economic Review, National Institute of Economic and Social Research, vol. 91(1), pages 27-42, February.
  62. Bray, Margaret, 1982. "Learning, estimation, and the stability of rational expectations," Journal of Economic Theory, Elsevier, vol. 26(2), pages 318-339, April.
  63. N/A, 1986. "Chapter I. The Home Economy," National Institute Economic Review, National Institute of Economic and Social Research, vol. 117(1), pages 5-19, August.
  64. Marcet, Albert & Sargent, Thomas J., 1989. "Convergence of least squares learning mechanisms in self-referential linear stochastic models," Journal of Economic Theory, Elsevier, vol. 48(2), pages 337-368, August.
  65. Robert Tetlow & Peter von zur Muehlen, 2004. "Avoiding Nash Inflation: Bayesian and Robus Responses to Model Uncertainty," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 7(4), pages 869-899, October.
  66. N/A, 1986. "Seasonal Patterns in the British Economy," National Institute Economic Review, National Institute of Economic and Social Research, vol. 117(1), pages 33-42, August.
  67. repec:sae:niesru:v:118:y::i:1:p:82-88 is not listed on IDEAS
  68. -, 1986. "Escenarios de la economía mundial hasta 1990," Desarrollo Productivo 4557, Naciones Unidas Comisión Económica para América Latina y el Caribe (CEPAL).
  69. Garratt, Anthony & Hall, Stephen G., 1997. "E-equilibria and adaptive expectations: Output and inflation in the LBS model," Journal of Economic Dynamics and Control, Elsevier, vol. 21(7), pages 1149-1171, June.
  70. Ben S. Bernanke & Julio J. Rotemberg (ed.), 1997. "NBER Macroeconomics Annual 1997," MIT Press Books, The MIT Press, edition 1, volume 1, number 026252242x, March.
  71. N/A, 1980. "Chapter III. The World Economy," National Institute Economic Review, National Institute of Economic and Social Research, vol. 91(1), pages 43-67, February.
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