COSMIC数据移动唯一性的几个问题  

Several Question about COSMIC Data Movement Uniqueness

作　　者：徐智[1] 何鸿君[1] 买新晖[1] 刘庆和[1] 

机构地区：[1]国防科学技术大学计算机学院,湖南长沙410073

出　　处：《中国电子商情（通信市场）》2013年第2期30-35,共6页

摘　　要：识别数据移动时，有些情况下移动数据组的多个操作应该识别为一个数据移动，COSMIC方法称之为数据移动唯一性。数据移动唯一性的判断对度量结果有着直接影响，而COSMIC关于数据移动唯一性的判断存在两个问题：一是数据移动唯一性的定义不清楚；二是数据移动唯一性判断没有明确规则和清晰流程。本文在度量实践的基础上，明确了数据移动唯一性的定义，分析了度量实践中数据移动唯一性的4种常见错误，梳理和总结了数据移动唯一性的规则，形成了数据移动唯一性判断的检查表和应用流程。最后，通过实例验证，以上定义、规则、流程可有效避免数据移动唯一性判断的错误。When identifying data movements, in some cases more than one data manipulations that moved data group（s） are associated with one data movement, which is defined as the data movement uniqueness. The judgment of data movement uniqueness has a direct impact on the measurement results. But in COSMIC method the judgment has two problems： one is that the definition of data movement uniqueness is not very clear; the other is that there are no clear rules and clear processes. Base on measurement practice, this paper clarifies the definition, analysis four usual mistakes; summarize the rules, and make a checklist and application process. In the end, examples verify that those definitions, rules and process above could help to avoid making errors in the judgment of data movement uniqueness.

关 键 词：COSMIC 数据移动唯一性 常见错误 检查表 应用流程 

分 类 号：TP311.5[自动化与计算机技术—计算机软件与理论]