Auch in der Corona-Krise schwelen internationale Handelskonflikte weiter. So verschärfte die US-Regierung Mitte Mai 2020, mitten in der Corona-Krise, noch einmal die Exportbeschränkungen für Zulieferer des chinesischen Telekommunikationsausrüsters Huawei. Angesichts des dramatischen...

Professional forecasters can rely on an econometric model to create their forecasts. It is usually unknown to what extent they adjust an econometric model-based forecast. In this paper we show, while making just two simple assumptions, that it is possible to estimate the persistence and variance...

The paper derives a test for equal predictability of multi-step-ahead system forecasts that is invariant to linear transformations. The test is a multivariate version of the Diebold-Mariano test. An invariant metric for multi-step-ahead system forecasts is necessary as the conclusions otherwise...