Abstract
Since different venders are assigned to different subsystems and phases in multiple vender projects, many Q&A about work products created by other venders are raised. In this paper, a method to find trend of defects, which are implanted in upper processes, by analyzing root causes of such Q&A items, and evaluate work products produced in preceding phases and development processes is proposed. Moreover, this paper provides sample results from pilot projects using proposed Q&A analysis method, and discusses its utility and challenges to be addressed.
