Definition und Realisierung einer Plattform zur modellbasierten Komposition von Simulationsmodellen

Modular hierarchical modeling formalisms distinghuish clearly between simulation algorithms and model definitions and offer well-defined means to construct models flexibly. At the same time they are particularily aimed at a centralized development of models. In contrast, simulation-based integration approaches clearly separate interface descriptions from model implementations, but offer less support for constructing models and experimenting with them. A carefull combination of concepts from the area of component-oriented software development, model-driven development and service-oriented architectures allows to combine the advantages of model-based and simulation-based composition approaches. This thesis conceives, defines, and realizes a platform for the composition of simulation models. The platform allows to associate model implementations, defined in specific formalisms, with formalism-independent interface definitions and to deploy models as parametrizable components. Interface definitions may be stored as XML documents in databases to search, select, and analyze composition candidates. A meta model formalizes the description means of the component platform, such that the refinement of interfaces into model implementations and the compatibility of interfaces can be checked automatically. The composition tool CoMo (Component Models) realizes the platform definition in the Java programming language. CoMo allows to derive platform-specific simulation models from platformindependent compositions. The integration of simulation platforms is demonstrated on the example of the existing simulation system James II. The developed composition platform is used in a simulation study to evaluate service trading mechanisms in mobile ad-hoc networks.