Application Of Orthogonal Defect Classification Methodology For Management And Analysis Of Software Defect

As the people solved the problem of "Software Crisis", they had introduced the conception of software process management and process improvement. However, most of the system, model and frame of process management at present are the guidelines not the concrete strategies and methods. Nowadays most of the software enterprises are in troubles: How to implement process improvement? How to assess the effects of the process? The author has read many books and articles about software engineering and software quality assurance, and considered that defect management is the key point of process improvement. In the thesis, we have the motivation that is software process drived by defect management, the purpose that is implementation of defect management and improvement of software process, and the emphasis that is defect analysis while we do search on defect management.Orthogonal defect classification method is the foundation of qualitative analysis of software process and implementation of defect management system. The traditional reliability growth model combines with different types of defects of ODC, and a new qualitative analysis method, which is called relative growth model of defect type, is proposed. The method can separate the stable growth curves and the rising growth curves of different defect types, and it also can help project managers adjust the strategies in the late test phase. The insight and prediction of the relative growth of specific aspects of the product, identified by the defect type categories, provides a method to evaluate risks of time and cost.A software defect management system based on the defect attributes of orthogonal defect classification is designed and implemented for Hunan Keycom information technologies Co., Ltd by studying the requirements of defect management and data analysis. It can generate kinds of defect analysis reports for decision-supported which can provide process guidance for the managers and developers by analysis against collected defect data. It can also present the alerts for software process according to the defect baselines created by the software quality assurance persons. The defect baselines present the quantitative criterion for process improvement. With the development of the organizations and the improvement of software process, the defect baselines will change. This system has characters of generality, extensibility and customization in small or middle size software organizations.