Die vorliegende Arbeit befasst sich mit der Vorhersage von Währungskrisen. Dazu wird ein dreidimensionales Frühwarnsystem für Währungskrisen konstruiert, das anhand zehn osteuropäischer Länder von 1995 bis 2003 mit einer binär logistischen Regression in sample und out of sample auf seine...

Many statistical applications require an estimate of a covariance matrix and/or its inverse.When the matrix dimension is large compared to the sample size, which happensfrequently, the sample covariance matrix is known to perform poorly and may suffer fromill-conditioning. There already exists...

This thesis develops new methods to assess two types of financial risk. Market risk is defined as the risk of losing money due to drops in the values of asset portfolios. Systemic risk refers to the breakdown risk for the financial system induced by the distress of individual companies. During...

Our context involves Cournot oligopolists producing NM products at constant marginal costs when preferences are quasi-linear. We identify relationships between second moments of unit costs and second moments of firm-level production. For example, a larger variance in unit costs of a product...