Based on the in-depth analysis of the interaction pat-terns between the components of software system in architecture,this paper illustrates that the association among them is complex and usually changeable during the running period. So we assume the interactions between two adjacency components are grouped into a single connector,which can be used to analyze the influence of components assembly on the survivability for software archi-tecture. The survivability of the components assembly is mapped into the connectivity of graph model. We also bring forward a simplicity method to calculate and quantify the survivability of architecture that could provide a more usable model for designers to evaluate the architecture.
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