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The idea to build systems based on services, by reusing and combining software made available independently via different technologies and channels and dynamically organizing them into coherent processes, has a very well recognized potential. Achieving this potential stands crucially on the ability to recognize and exploit the context in which such applications operate, in terms of the available services,...
We present a logistic scenario, based on the sea port of Bremen, and a context-aware dynamic service-based system to support its operation. We also show how we have used it to evaluate our automated adaptation techniques.
Existing approaches for monitoring service-based systems assume that monitor rules are pre-defined and known in advance. However, adaptation of service-based systems may trigger the need to adapt the associated monitor rules in order to verify the correct behavior of the adapted service compositions. In this work, we present PRadapt, a framework for dynamic monitoring of adaptable service-based systems...
We propose a comprehensive framework for adaptivity of service-based applications, which exploits the concept of process fragments as a way to model reusable process knowledge and to allow for the dynamic, incremental, context- aware composition of such fragments into adaptable service-based applications. The framework provides a set of adaptation mechanisms that, combined through adaptation strategies,...
Run-time adaptability is a key feature of dynamic business environments, where the processes need to be constantly refined and restructured to deal with exceptional situations and changing requirements. The execution of such a system results in a set of adapted process variants instantiated on the same process model but dynamically restructured to handle specific contexts. Process evolution exploits...
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