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Impulse response estimation via flexible local projections

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  • Haroon Mumtaz
  • Michele Piffer

Abstract

This paper introduces a flexible local projection that generalizes the model by Jord\'a (2005) to a non-parametric setting using Bayesian Additive Regression Trees. Monte Carlo experiments show that our BART-LP model is able to capture non-linearities in the impulse responses. Our first application shows that the fiscal multiplier is stronger in recession than in expansion only in response to contractionary fiscal shocks, but not in response to expansionary fiscal shocks. We then show that financial shocks generate effects on the economy that increase more than proportionately in the size of the shock when the shock is negative, but not when the shock is positive.

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  • Haroon Mumtaz & Michele Piffer, 2022. "Impulse response estimation via flexible local projections," Papers 2204.13150, arXiv.org.
    • Handle: RePEc:arx:papers:2204.13150
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    References listed on IDEAS

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    1. Castelnuovo, Efrem & Pellegrino, Giovanni, 2018. "Uncertainty-dependent effects of monetary policy shocks: A new-Keynesian interpretation," Journal of Economic Dynamics and Control, Elsevier, vol. 93(C), pages 277-296.
    2. Gordon, Robert J. & Krenn, Robert, 2010. "The End of the Great Depression 1939-41: Policy Contributions and Fiscal Multipliers," CEPR Discussion Papers 8034, C.E.P.R. Discussion Papers.
    3. James H. Stock & Mark W. Watson, 2018. "Identification and Estimation of Dynamic Causal Effects in Macroeconomics Using External Instruments," Economic Journal, Royal Economic Society, vol. 128(610), pages 917-948, May.
    4. Robert J. Gordon & Robert Krenn, 2010. "The End of the Great Depression 1939-41: Policy Contributions and Fiscal Multipliers," NBER Working Papers 16380, National Bureau of Economic Research, Inc.
    5. Lutz Kilian & Yun Jung Kim, 2011. "How Reliable Are Local Projection Estimators of Impulse Responses?," The Review of Economics and Statistics, MIT Press, vol. 93(4), pages 1460-1466, November.
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    Cited by:

    1. Pietro Alessandrini & Òscar Jordà & Fabrizio Venditti, 2023. "Decomposing the Monetary Policy Multiplier," Working Paper Series 2023-14, Federal Reserve Bank of San Francisco.

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