Abstract
In order to promote continuous improvement of software quality, we need to perform a quantitative management. It's because the quality of a software project effects not only effort and schedule, but also customer satisfaction directly. According to the measurement and analysis of the CMMI process area, the collection of the project information must be made on the basis of measurement needs. A data repository for the quality, reporting and feedback system should be implemented in the structure. If accumulation and evaluation of data be promoted, quality management based on projection of the defect is possible. However, in order to do this effectively, it requires understanding of statistical property of metrics and predictive modeling techniques. In this paper, as an example of efforts taken by SI services sector at IBM to CMMI, it indicates how the defect prediction and the control based on the prediction are carried out concerning quality control process. In addition, we describe the points to improve measurement process needed to achieve CMMI Maturity Level 5.
