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Does the Private Database Help to Explain Brazilian Inflation?

In: Time Series and Wavelet Analysis

Author

Listed:
  • Emerson Fernandes Marçal

    (Sao Paulo School of Economics (Getulio Vargas Foundation) and MacroLab)

  • Pedro L. Valls Pereira

    (Sao Paulo School of Economics (Getulio Vargas Foundation) and CEQEF)

  • Diogo de Prince

    (MacroLab and Federal University of Sao Paulo)

Abstract

The large dimension of variables as regressors requires a reduction in the number of variables, which we do in this paper through the factorial model. This method is useful if the variables are collinear, as is our case. We aim to synthesize information from Brazilian Institute of Economics (IBRE)’s public and private databases to evaluate if there is an additional gain from the private database to explain the Brazilian inflation index, the broad consumer price index (IPCA). We analyze the monthly period between 2000 and 2020. After we extract the factors, we select which factors are relevant regressors to explain inflation with the Autometrics algorithm. Our result is that the factors extracted from the public database bring gains to explain inflation in relation to an autoregressive model. However, the use of factors tied to the private database still leads to explanatory gains for inflation. We have been able to reduce the forecast mean square error in half for the last 48 months of the sample using factors extracted from the private and public databases.

Suggested Citation

  • Emerson Fernandes Marçal & Pedro L. Valls Pereira & Diogo de Prince, 2024. "Does the Private Database Help to Explain Brazilian Inflation?," Springer Books, in: Chang Chiann & Aluisio de Souza Pinheiro & Clélia Maria Castro Toloi (ed.), Time Series and Wavelet Analysis, pages 133-148, Springer.
    • Handle: RePEc:spr:sprchp:978-3-031-66398-7_7
    DOI: 10.1007/978-3-031-66398-7_7
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