Abstract
Identifying critical components of Service-Oriented Systems is of great significance to the overall reliability of the system. As the size of software systems increases, identifying critical components can reduce the number of components that need to be predicted and shorten the prediction time in the process of predicting system reliability. Moreover, predicting the reliability of critical components can also ensure the stability of system. Therefore, we propose a method for identifying the critical components in Service-Oriented Systems. This method transforms the interaction between service components of Service-Oriented Systems into service dependency graph. An improved weighted LeaderRank algorithm is used to measure the importance of components and obtain the sequence of critical components. Through experimental analysis, the method can accurately and efficiently identify critical components in the system.
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