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Run-time architectural modeling for future internet applications

機譯：針對未來Internet應用程序的運行時架構(gòu)建模

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Abstract Interoperability, flexibility, and adaptability are key requirements of future internet applications. Convergence of contents, services, things, and networks can be the cornerstone to fulfill these requirements. Such rich and composite sources of data and processing capabilities call for a structured and formal approach that manages and capitalizes heterogeneous information. This paper proposes an approach to the run-time composition of software system architectures, aimed at addressing goals revealed at runtime. The approach is grounded on a graph model characterized by two control levels: a metamodeling and an instantiation level. At metamodeling level, the graph describes facts that may occur in a scenario of interest, processes triggered by facts, and technologies available to execute processes. The actual occurrence of facts, together with the deriving processes and technologies, is managed at instantiation level, with reference to an application-specific model. In particular, the paper proposes an algorithm that determines an optimal way to manage a change in the run-time environment, by finding a minimum cost path in the model. The usefulness of the proposed approach and its applicability to actual scenarios have been validated in an example smart home environment.
機譯：摘要互操作性，靈活性和適應性是未來Internet應用程序的關鍵要求。內(nèi)容，服務，事物和網(wǎng)絡的融合可能是滿足這些要求的基石。這種豐富而又綜合的數(shù)據(jù)和處理能力來源需要一種結(jié)構(gòu)化和形式化的方法來管理和利用異構(gòu)信息。本文提出了一種軟件系統(tǒng)體系結(jié)構(gòu)的運行時組合方法，旨在解決運行時揭示的目標。該方法基于以兩個控制級別為特征的圖模型：元建模和實例化級別。在元建模級別，該圖描述了在感興趣的場景中可能發(fā)生的事實，由事實觸發(fā)的流程以及可用于執(zhí)行流程的技術。事實的實際發(fā)生，以及派生過程和技術，在實例化級別，參考特定于應用程序的模型進行管理。特別是，本文提出了一種算法，該算法通過找到模型中的最小成本路徑來確定管理運行時環(huán)境變化的最佳方式。在示例性智能家居環(huán)境中，已驗證了所提出方法的有用性及其對實際場景的適用性。

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