The Stochastic Volatility in Mean Model With Time-Varying Parameters: An Application to Inflation Modeling
- Publication Type:
- Journal Article
- Citation:
- Journal of Business and Economic Statistics, 2017, 35 (1), pp. 17 - 28
- Issue Date:
- 2017-01-02
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| The Stochastic Volatility in Mean Model With Time Varying Parameters An Application to Inflation Modeling.pdf | Published Version | 810.52 kB |
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© 2017 American Statistical Association. This article generalizes the popular stochastic volatility in mean model to allow for time-varying parameters in the conditional mean. The estimation of this extension is nontrival since the volatility appears in both the conditional mean and the conditional variance, and its coefficient in the former is time-varying. We develop an efficient Markov chain Monte Carlo algorithm based on band and sparse matrix algorithms instead of the Kalman filter to estimate this more general variant. The methodology is illustrated with an application that involves U.S., U.K., and Germany inflation. The estimation results show substantial time-variation in the coefficient associated with the volatility, highlighting the empirical relevance of the proposed extension. Moreover, in a pseudo out-of-sample forecasting exercise, the proposed variant also forecasts better than various standard benchmarks.
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