基于差分进化的复杂软件系统动态可靠性分配  

Dynamic reliability allocation of complex software system based on differential evolution

作　　者：张世金 张国富[1,2,3] 苏兆品 岳峰[1,2,3] Zhang Shijin;Zhang Guofu;Su Zhaopin;Yue Feng(School of Computer & Information, Hefei University of Technology, Hefei 230601, China;Anhui Province Key Laboratory of Industry Safety & Emergency Technology, Hefei 230601, China;Engineering Research Center of Safety Critical Industrial Measurement & Control Techno-logy for Ministry of Education, Hefei 230601, China)

机构地区：[1]合肥工业大学计算机与信息学院,合肥230601 [2]工业安全与应急技术安徽省重点实验室,合肥230601 [3]安全关键工业测控技术教育部工程研究中心,合肥230601

出　　处：《计算机应用研究》2019年第5期1424-1427,共4页Application Research of Computers

基　　金：国家自然科学基金资助项目(61573125;61371155);安徽省自然科学基金资助项目(1608085MF131;1508085MF132;1508085QF129);中央高校基本科研业务费专项资金资助项目(JZ2017YYPY0232)

摘　　要：现有关于复杂软件系统可靠性分配的研究均基于结构固定的软件系统,而实际情况中软件系统结构往往不固定。针对这一矛盾,构建复杂软件系统动态可靠性分配优化模型,并基于差分进化设计复杂软件系统动态可靠性分配算法。在系统结构发生变化时,首先基于D-S证据理论对系统中各模块的全局权重重新进行评估,并考虑变化前后系统的关联性,在差分进化生成初始种群时保留了部分历史解。最后,通过仿真实验分析验证了所提方法的有效性。Existing research on the reliability allocation of complex software system just based on software systems whose structure were fixed, but the structure of software systems always change in practice. For this contradiction, this paper presented a dynamic reliability allocation optimization model of complex software system. At the same time, it developed a dynamic reliability allocation algorithm of complex software system based on differential evolution. Specifically, when the system structure changes, it first estimated the parameters of each module according to the Dempster-Shafer evidence theory. Next, taking account of the relevance of the system before and after the change, it retained some historical solutions in the previous search to form part of the initial population in differential evolution. Finally, it verifies the effectiveness of the proposed approach by simulation experiments.

关 键 词：复杂软件系统 动态可靠性分配 差分进化 D-S证据理论 保留历史解 

分 类 号：TP311.5[自动化与计算机技术—计算机软件与理论]