Giannone, Domenico; Lenza, Michele; Primiceri, Giorgio E - C.E.P.R. Discussion Papers - 2012
Vector autoregressions (VARs) are flexible time series models that can capture complex dynamic interrelationships among macroeconomic variables. However, their dense parameterization leads to unstable inference and inaccurate out-of-sample forecasts, particularly for models with many variables....