Giannone, Domenico; Primiceri, Giorgio; Lenza, Michele - National Bureau of Economic Research (NBER) - 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....