Extending UML for the modeling of fuzzy self-adaptive software systems

Fuzzy self-adaptive software systems are a kind of fuzzy-control-based systems that are proposed to deal with the emerging uncertainty problem in the software self-adaptation process. The construction of such systems has shown to be significantly more challenging than traditional systems as a lack of appropriate modeling tools. To address this problem, we introduce a modeling approach, entitled Fuzzy self-Adaptation ModEling Profile (FAME Profile), which is based on the extension mechanisms of UML. FAME Profile consists of a set of new stereotypes that correspond to the key concepts within fuzzy self-adaptive software systems, and three kinds of diagrams that provide analysis view, structural view and behavioral view respectively. The FAME Profile can considerably ease the modeling of fuzzy self-adaptive software systems and can be easily incorporated into main stream UML development environments. We illustrate the complete modeling process through a fuzzy self-adaptive software system called FuzzyLon893OPCServer System.