一种软件系统需求风险评估方法  

A Requirement Risk Evaluation Method of Software System

作　　者：刘婷[1] 李千目[1] 侯君[1] 张宏[1] 李露[1] 

机构地区：[1]南京理工大学计算机科学与技术学院,南京210094

出　　处：《计算机工程》2012年第22期50-54,共5页Computer Engineering

基　　金：国家自然科学基金资助项目"信息系统的安全风险跟踪评价与动态预测"(60903027);江苏省"973"计划基金资助项目"无线传感网的安全感知与全域安全控制"(BK2011023);江苏省自然科学基金资助项目"无线传感网安全风险的全域感知;评估与控制"(BK2011370);连云港科技基金资助项目"面向产业化的无线传感网安全服务模式"(CG1124)

摘　　要：提出一种软件系统需求风险评估方法。通过构造Bayesian网络分析需求风险以及风险源之间的因果关系,利用条件概率表定量描述需求风险发生概率,应用层次分析法进行风险影响的评估,得到各项需求风险的综合风险值。仿真结果表明,该方法能较准确地评估软件需求分析阶段的风险等级,在等级划分方面列出了一些主要的需求风险,从而有助于开展风险管理,增强软件的可靠性。This paper proposes a risk evaluation method of sottware system. By building a Bayesian network, the method analyses the uncertainty contained in the main activities during requirements analysis phase. It determines the sources of risks related to every requirements-risk in the risk list. Then establish a structure-learning algorithm to evaluate the risk effects in order to get the general result of all risks during requirements analysis phase. Simulation result shows that the methods reflect the risk level during the software requirements analysis phase more accurately, list some of the common main requirements risks in the in risks classification, help to carry out the risk management, and enhance the reliability of the sotiware.

关 键 词：需求风险评估 BAYESIAN网络 软件风险分析 风险源识别 风险清单 

分 类 号：TP311.5[自动化与计算机技术—计算机软件与理论]