This thesis addresses three major issues in data mining regarding feature subset selection in large dimensionality domains, plausible reconstruction of incomplete data in cross-sectional applications, and forecasting univariate time series. For the automated selection of an optimal subset of...

Improving the predictability of airline schedules in the National Airspace System (NAS) has been a constant endeavor, particularly as system delays grow with ever-increasing demand. Airline schedules need to be resistant to perturbations in the system including Ground Delay Programs (GDPs) and...

In der vorliegenden Arbeit werden Modelle für die Portfolio-Optimierung analysiert und implementieren. Dabei stehen quantitative Methoden der Fuzzy-Logik im Vordergrund. Zunächst wird das klassische Portfolio-Modell nach Markowitz dargestellt und dessen Resultate für einen Vergleich mit einem...

A methodology is proposed for evaluating the level of service within an airportlandside system from the passenger's point of view using linguistic servicecriteria. The new concept of level of service for a transport system, particularlywithin the airports indicates that there must be strong...

During recent years, the supply chain performance management has become a key strategic consideration. Many manufacturers seek to collaborate with their suppliers and customers in order to upgrade their competitiveness and management performance. Because of complexity, uncertainty and vagueness...

This paper explores the sources of bargaining power in wage negotiations, and examines how productivity and training affect wages. In the standard analyses of wage bargaining, the negotiating partners are specified a priori, and thus it is impossible to address the question of how they achieve...

Obstfeld (1994) shows that a currency crisis can be explained by the occurrence of multiple equi-libria (2 interior equilibria). For the same level of economic fundamentals, it may be optimal forthe government either to devalue or to maintain the peg. The decision depends on the...