A practical classification-rule for software-quality models

摘要

A practical classification rule for a SQ (software quality) modelnconsiders the needs of the project to use a model to guide targetingnsoftware RE (reliability enhancement) efforts, such as extra reviewsnearly in development. Such a rule is often more useful than alternativenrules. This paper discusses several classification rules for SQ models,nand recommends a generalized classification rule, where theneffectiveness and efficiency of the model for guiding software REnefforts can be explicitly considered. This is the first application ofnthis rule to SQ modeling that we know of. Two case studies illustratenapplication of the generalized classification rule. Antelecommunication-system case-study models membership in the class ofnfault-prone modules as a function of the number of interfaces to othernmodules. A military-system case-study models membership in the class ofnfault-prone modules as a function of a set of process metrics thatndepict the development history of a module. These case studies arenexamples where balanced misclassification rates resulted in more usefulnand practical SQ models than other classification rules