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Propriedades Dinâmicas de Um Modelo DSGE Com Parametrizações Alternativas Para o Brasil

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  • Marco A. F. H. Cavalcanti
  • Luciano Vereda

Abstract

O objetivo deste texto é analisar as propriedades dinâmicas de um modelo Dinâmico Estocástico de Equilíbrio Geral - Dynamic Stochastic General Equilibrium (DSGE) - para o Brasil, sob parametrizações alternativas do modelo. Inicialmente, apresenta-se uma revisão cuidadosa da literatura, de modo a identificar "faixas admissíveis" de valores para alguns dos principais parâmetros encontrados na classe de modelos DSGE. Em seguida, calculam-se funções de resposta a impulso (FRI) de interesse, sob diversas parametrizações do modelo. Em uma primeira etapa, as FRIs são calculadas variando-se o valor de alguns parâmetros de interesse, um de cada vez, de modo a analisar a sensibilidade das FRIs a cada parâmetro tomado isoladamente. Em uma segunda etapa, realiza-se uma análise de "sensibilidade global" das FRIs do modelo: i) sorteiam-se valores para cada parâmetro do modelo dentro das faixas de valores admissíveis identificadas previamente; ii) calculam-se FRIs para os choques de interesse; iii) repetindo tal procedimento um número grande de vezes, obtêm-se "intervalos de confiança" para as FRIs desejadas. De acordo com os resultados obtidos, as respostas de algumas das principais variáveis macroeconômicas aos choques analisados são compatíveis com fatos estilizados para a economia brasileira e são razoavelmente robustas à escolha dos parâmetros estruturais do modelo no que se refere a seu timing, mas não no que diz respeito à sua magnitude. This paper analyzes the dynamic properties of a DSGE model for Brazil, under alternative model parameterizations. First, we carefully review the literature in order to identify "admissible ranges" for the model`s parameters. We then calculate selected impulse response functions (IRF) under various model parameterizations. We first analyze the sensitivity of IRFs to some of the model`s parameters taken one at a time. We later analyze the model`s IRFs "global sensitivity": i) we randomly draw parameter values from the "admissible ranges" previously identified; ii) we calculate impulse response functions for selected variables and shocks under each draw; iii) by repeating this procedure many times, we obtain "confidence intervals" for the desired IRFs.According to our results, responses by some of the main macroeconomic variables to the selected shocks are compatible with stylized facts for the Brazilian economy and are reasonably robust to the choice of structural parameters with regard to their timing,but not their magnitude.

Suggested Citation

  • Marco A. F. H. Cavalcanti & Luciano Vereda, 2011. "Propriedades Dinâmicas de Um Modelo DSGE Com Parametrizações Alternativas Para o Brasil," Discussion Papers 1588, Instituto de Pesquisa Econômica Aplicada - IPEA.
  • Handle: RePEc:ipe:ipetds:1588
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    1. Andreza Aparecida Palma & Marcelo Savino Portugal, 2014. "Preferences Of The Central Bank Of Brazil Under The Inflation Targeting Regime: Estimation Using A Dsge Model For A Small Open Economy," Anais do XLI Encontro Nacional de Economia [Proceedings of the 41st Brazilian Economics Meeting] 055, ANPEC - Associação Nacional dos Centros de Pós-Graduação em Economia [Brazilian Association of Graduate Programs in Economics].
    2. Teles, Vladimir K. & Costa Junior, Celso Jose & Rosa, Rafael Mouallem, 2015. "Investment-Specific Technological Change and the Brazilian Macroeconomy," Brazilian Review of Econometrics, Sociedade Brasileira de Econometria - SBE, vol. 35(2), March.
    3. Igor Ézio Maciel Silva & Nelson Leitão Paes & Jocildo Fernandes Bezerra, 2016. "Evidences Of Incomplete Interest Rate Pass-Through, Directed Credit And Cost Channel Of Monetary Policy In Brazil," Anais do XLIII Encontro Nacional de Economia [Proceedings of the 43rd Brazilian Economics Meeting] 036, ANPEC - Associação Nacional dos Centros de Pós-Graduação em Economia [Brazilian Association of Graduate Programs in Economics].
    4. Cavalcanti, Marco A. F. H. & Vereda, Luciano, 2015. "Fiscal Policy Multipliers in a DSGE Model for Brazil," Brazilian Review of Econometrics, Sociedade Brasileira de Econometria - SBE, vol. 35(2), March.
    5. Costa Junior, Celso Jose & Sampaio, Armando Vaz & Gonçalves, Flávio de Oliveria, 2012. "Income Transfer as Model of Economic Growth," MPRA Paper 45494, University Library of Munich, Germany.
    6. Costa Junior, Celso J. & Garcia-Cintado, Alejandro C., 2021. "Rent-seeking in an emerging market: A DSGE approach," Economic Systems, Elsevier, vol. 45(2).
    7. Alejandro C. Garcia-Cintado & Celso Jose Costa Junior (celso.costa@fgv.br) & Armando Vaz Sampaio (avsampaio@ufpr.br), 2016. "Post-2008 Brazilian Fiscal Policy: an Interpretation through the Analysis of Fiscal Multipliers," EcoMod2016 9528, EcoMod.
    8. Palma, Andreza Aparecida & Portugal, Marcelo Savino, 2014. "Preferences of the Central Bank of Brazil under the inflation targeting regime: Estimation using a DSGE model for a small open economy," Journal of Policy Modeling, Elsevier, vol. 36(5), pages 824-839.
    9. Costa Junior, Celso José & Sampaio, Armando Vaz, 2014. "Tax Reduction Policies of the Productive Sector and Its Impacts on Brazilian Economy," Dynare Working Papers 36, CEPREMAP.
    10. Cavalcanti, Marco A.F.H. & Vereda, Luciano & Doctors, Rebeca de B. & Lima, Felipe C. & Maynard, Lucas, 2018. "The macroeconomic effects of monetary policy shocks under fiscal rules constrained by public debt sustainability," Economic Modelling, Elsevier, vol. 71(C), pages 184-201.

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