Abstrakt
Recently, several ensemble-based component models have been created to address the dynamicity and complexity of designing cyber-physical systems. Experience in applying these models to actual case studies has shown that there are still scenarios in distributed organization that are hard to capture by utilizing only the concepts of these component models.
In this paper, we present a summary of issues encountered, based on the analysis of selected case studies. We propose new concepts that build on those contained in ensemble-based models.
In particular, we introduce the ideas of ensemble nesting, dynamic role cardinalities and ensemble fitness. These concepts and their support in the runtime framework aim at serving as a bridge between high-level ensemble formation rules and low-level decentralized implementation.
These concepts are illustrated on one of the case studies, demonstrating a domain specific language based on that used in the DEECo component model.