一种基于隐马尔可夫的软件可靠性监控方法

摘要

Reliability is an important property of software systems.Runtime reliability monitor can improve the quality of software system.Existing architecture-level reliability monitor approaches focus on system-level reliability and assume that the reliabilities of individual components are known.In general,this assumption is unreasonable,making component reliability monitor an im-portant missing ingredient in the current literature.Considering the uncertainties of the runtime environment,reliability monitor-ing also faces lots of challenges.In this paper,we exploited a software monitor approach based on Hidden Markov Model in a component-based system as a case.%可靠性是众多软件系统的关键指标之一。针对构件式软件系统，提出了一种对其可靠性进行监控的方法。对构件式系统中的每个构件，首先采集运行时数据对其进行隐马尔可夫模型建模，计算其单独可靠性；然后再对整个系统的运行时状态进行分析，再次映射到隐马尔可夫模型进行建模，计算整个系统的可靠性。实验表明，在构件式软件系统中，隐马尔可夫模型可以有效地反映系统的状态变化过程，基于隐马尔可夫模型的可靠性监控方法是可行的、有效的。