Safe substitution for service-based applications
Proceedings of the 2013 International Workshop on Quality Assurance for Service-based Applications
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Self-adaptive systems, changing their functional behavior at runtime, provide desired a level of flexibility. Although various runtime frameworks have been studied, they tend to rely on a particular architecture. It is inadequate to study the characteristics of self-adaptive systems. This paper presents an abstract, declarative framework for them and relates it to an adaptive PHP-based Web application architecture, which takes a model-based adaptation approach. The formalism can be a basis for understanding the distinctive roles of the model information and runtime mechanism.