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Self-adaptive systems (SAS) can reconfigure at run-time to mitigate uncertainties posed by environments for which they may not have been explicitly designed. High-assurance SAS applications must continually deliver acceptable behavior for critical services, enabling the need for run-time validation techniques. To this end, run-time testing can provide additional assurance that an SAS will continue...
In this paper, we explore the integration of evolutionary computation into the development and run-time support of dynamically-adaptable, high-assurance middleware. The open-ended nature of the evolutionary process has been shown to discover novel solutions to complex engineering problems. In the case of high-assurance adaptive software, however, this search capability must be coupled with rigorous...
Requirements monitoring continuously probes system components and sensors to assess whether the system satisfies its requirements and to detect conditions conducive to a requirement violation. Monitoring, however, is typically computationally expensive, intrusive, and presents tradeoffs between monitoring costs and accuracy, or the degree of coverage and coherence of gathered data. As such, it may...
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