Legrand, Romain (2019): Time-Varying Vector Autoregressions: Efficient Estimation, Random Inertia and Random Mean.
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Abstract
Time-varying VAR models represent fundamental tools for the anticipation and analysis of economic crises. Yet they remain subject to a number of limitations. The conventional random walk assumption used for the dynamic parameters appears excessively restrictive, and the existing estimation procedures are largely inefficient. This paper improves on the existing methodologies in four directions: i) it introduces a general time-varying VAR model which relaxes the standard random walk assumption and defines the dynamic parameters as general autoregressive processes with equation-specific mean values and autoregressive coefficients. ii) it develops an efficient estimation algorithm for the model which proceeds equation by equation and combines the traditional Kalman filter approach with the recent precision sampler methodology. iii) it develops extensions to estimate endogenously the mean values and autoregressive coefficients associated with each dynamic process. iv) through a case study of the Great Recession in four major economies (Canada, the Euro Area, Japan and the United States), it establishes that forecast accuracy can be significantly improved by using the proposed general time-varying model and its extensions in place of the traditional random walk specification.
Item Type: | MPRA Paper |
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Original Title: | Time-Varying Vector Autoregressions: Efficient Estimation, Random Inertia and Random Mean |
Language: | English |
Keywords: | Time-varying coefficients; Stochastic volatility; Bayesian methods; Markov Chain Monte Carlo methods; Forecasting; Great Recession |
Subjects: | C - Mathematical and Quantitative Methods > C2 - Single Equation Models ; Single Variables > C22 - Time-Series Models ; Dynamic Quantile Regressions ; Dynamic Treatment Effect Models ; Diffusion Processes E - Macroeconomics and Monetary Economics > E3 - Prices, Business Fluctuations, and Cycles > E32 - Business Fluctuations ; Cycles F - International Economics > F4 - Macroeconomic Aspects of International Trade and Finance > F47 - Forecasting and Simulation: Models and Applications |
Item ID: | 95707 |
Depositing User: | Romain Legrand |
Date Deposited: | 26 Aug 2019 11:23 |
Last Modified: | 03 Nov 2024 20:09 |
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URI: | https://mpra.ub.uni-muenchen.de/id/eprint/95707 |
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Time-Varying Vector Autoregressions: Efficient Estimation, Random Inertia and Random Mean. (deposited 15 Sep 2018 11:07)
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