中文摘要：

以构件化的软件开发方法为背景，提出了一种将UML模型自动地转换为可靠性分析模型Markov链的方法．该方法基于构件化的软件体系结构，从UML的用况图、顺序图、活动图和构件图出发，对其进行扩展，在模型中标注了可靠性分析所需的信息．在此基础上，通过构造一个称为构件转移图的中间模型，将标注了可靠性信息的UML模型转换为Markov链．该方法产生的结果能够直接作为现有可靠性相关的数学分析方法的输入，从而使可靠性分析工作变得更加方便、高效．

英文摘要：

In the context of component-based software development, this paper proposes an approach to transforming UML diagrams of software architecture to Markov chain for the quantitative evaluation of reliability. Based on the component-based software architecture, it utilizes four types of UML diagrams： use case, sequence, activity and component diagrams, extending them and annotating them with reliability related attributes. Then, the diagrams are transformed into a Markov chain based analysis model by constructing an intermediate model called Component Transition Graph （CTG）. Result of this transformation can be directly used in the existing analysis methods to predict software reliability, which facilitates the analysis task of software designer.