摘要
针对Markov链使用模型缺乏软件失效信息,提出了一种改进Markov链使用模型进行软件可靠性早期评估的方法.该方法首先扩展Markov链使用模型,在其中加入失效状态及执行概率,构建软件可靠性早期评估模型;然后,依据软件可靠性早期评估模型生成算法得到软件可靠性.最后,通过一个SCS软件实例,对本文方法性能进行了验证.实验结果表明,该方法可以自动输出多种软件可靠性评估指标,有效评估软件可靠性.
For the usage model of Markov chain lacking of software failure information, this paper comes up with a method of improving the usage model of Markov chain to implement early evaluation of software reliability. In this scheme, this paper expands the usage model of Markov chain firstly, adds the failure state and implementation probability to the model and constructs an early evaluation model of software reliability, and then obtains the software reliability by using the generation algorithm of the early evaluation model, and finally, verifies and tests the performance on this proposed method by taking an example of SCS software. Experimental results show that using this method can output the evaluation indexes of various softwares automatically, and evaluate the software reliability effectively.
出处
《空军预警学院学报》
2014年第3期199-202,共4页
Journal of Air Force Early Warning Academy
关键词
软件可靠性
早期评估模型
MARKOV链
使用模型
software reliability
early evaluation model of software reliability
Markov chain
usage model
