Forecasting CPI inflation under economic policy and geopolitical uncertainties

Shovon Sengupta (), Tanujit Chakraborty () and Sunny Singh ()
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Shovon Sengupta: SUAD_SAFIR - SUAD - Sorbonne University Abu Dhabi, BITS Pilani - Birla Institute of Technology and Science, Fidelity Investments
Tanujit Chakraborty: SUAD_SAFIR - SUAD - Sorbonne University Abu Dhabi
Sunny Singh: BITS Pilani - Birla Institute of Technology and Science

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Abstract: Forecasting consumer price index (CPI) inflation is of paramount importance for both academics and policymakers at central banks. This study introduces the filtered ensemble wavelet neural network (FEWNet) to forecast CPI inflation, tested in BRIC countries. FEWNet decomposes inflation data into high- and low-frequency components using wavelet transforms and incorporates additional economic factors, such as economic policy uncertainty and geopolitical risk, to enhance forecast accuracy. These wavelet-transformed series and filtered exogenous variables are input into downstream autoregressive neural networks, producing the final ensemble forecast. Theoretically, we demonstrate that FEWNet reduces empirical risk compared to fully connected autoregressive neural networks. Empirically, FEWNet outperforms other forecasting methods and effectively estimates prediction uncertainty due to its ability to capture non-linearities and long-range dependencies through its adaptable architecture. Consequently, FEWNet emerges as a valuable tool for central banks to manage inflation and enhance monetary policy decisions.

Keywords: Inflation; forecasting; Wavelets; Neural; networks; Empirical; risk; minimization; Conformal; prediction; intervals (search for similar items in EconPapers)
Date: 2024-09
New Economics Papers: this item is included in nep-ets, nep-for, nep-mac and nep-mon
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Published in International Journal of Forecasting, 2024, ⟨10.1016/j.ijforecast.2024.08.005⟩

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Persistent link: https://EconPapers.repec.org/RePEc:hal:journl:hal-05056934

DOI: 10.1016/j.ijforecast.2024.08.005

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