On Software Requirement Metrics Based on Six-Sigma

In the course of software development, the requirements often change significantly. Based on the analysis of software requirement variations, we introduce a new approach to measurement of requirement changes based on the six-sigma methods. The framework of GQM (Goal-Question-Metric) and the process of DMAIC (Define-Measurement-Analysis- Improvement-Control) in six-sigma were combined for application in the management of software projects. The change metrics are presented based on GQM, and the requirement changes are classified according to their effect in project quality. Further, statistical methods were used in the analysis and the control of these requirement changes. Finally, we illustrate our approach with a business case.