计算机工程2012，Vol.38Issue(3)：39-42,4.DOI:10.3969/j.issn.1000-3428.2012.03.014
一种软件工作量估算的不确定性度量方法
Uncertainty Measurement Method of Software Effort Estimation
摘要
Abstract
This paper proposes a method to assess the uncertainty of using COCOMO81 model. It uses the variance of model's output to assess the uncertainty of model's output. And uses both the data's variance and the model's output to assess the uncertainty of the distance between estimated effort and its real value. Based on the uncertainty, it proposes the prediction interval. It proposes the Mean Relative Variance (MRV) and shooting ration as the measurement to assess the uncertainty. In the experiment, re-Sampling method is employed to get N pairs of train set and test set. The average value of SR and MRV for different confidence level is calculated. After that, the scatter plot of SR and MRV is used to compare the different intervals that generated by different methods of assessing uncertainty. Experimental result shows that the measurement for uncertainty can generate narrower interval at the context of the same shooting ratio.关键词
不确定性/软件工作量估算/重采样/预测区间/COCOMO模型/方差Key words
uncertainty/ software effort estimation/ re-sampling/ prediction interval/ COCOMO model/ variance分类
信息技术与安全科学引用本文复制引用
解浪,杨叶..一种软件工作量估算的不确定性度量方法[J].计算机工程,2012,38(3):39-42,4.基金项目
国家自然科学基金资助项目(90718042) （90718042）
广东省中国科学院全面战略合作基金资助项目(2009B091300131) （2009B091300131）
