In this paper we concentrate on Job Shop Scheduling as a representative of constrained combinatorial problems. We introduce a new permutation representation for this problem. Three crossover operators different in tending to preserve the relative order, the absolute order, and the position in...

Genetic Algorithms (GAs) have shown to fit the complex needs arisung from many tasks of academic optimization for almost 20 years.(...)

The application of adaptive optimization strategies to scheduling in manufacturing systems has recently become a research topic of broad interest. Population based approaches to scheduling predominantly treat static data models, whereas real-world scheduling tends to be a dynamic problem. This...

Im vorliegenden Beitrag wird ein genetischer Algorithmus für das Job-Shop-Scheduling-Problem mit einer neuen Repräsentation vorgestellt, die sich an den technologischen Vorschriften der Problemstellung orieniert und nur zulässige Lösungen kodiert. Für diese Repräsentation wird die Wirkung...

A frequently observed difficulty in the application of genetic algorithms to the domain of optimization ariscs from premature convergence. In order to preserve genotype diversity we develop a new model of auto-adaptive behavior for individuals. In this model a population member is an active...

The population of parallel genetic algorithms (PGAs) can easily be split up to match the needs of a coarse grained parallelism. A cluster of interconnected workstations, seen as an MIMD-architecture, is the chosen hardware to express this kind of parallelism. A PGA implementation, as any other...

In dieser Arbeit wurde eine neue Form der Repräsentation von Maschinenbelegungsproblemen für Genetische Algorithmen vorgestellt. Sie behandelt die Maschinenbelegungsplanung in natürlicher Weise durch Reihenfolgenbildung von ausführenden Arbeitsgängen und umgeht dabei dennoch die...