RETRACTED: Probability-based Safety Related Requirements Change Impact Analysis (Retracted Article)

Software requires change throughout its lifetime which has been found to be a particular problem in terms of schedule, budget, and quality. The problems are most extreme important for critical software that needs to be validated if the changed requirements will affect safety. Therefore, the change impact analysis is so important in safety-critical system. This paper proposes a method to analyze the change impact analysis in a quantitative way with risk probability. First, a complete safety assessment model and a reliable model to trace the change are proposed based on probabilistic assessment. A case study on well-known systems, such as pressure systems, is analyzed. Then the application of our proposed traceability method is discussed which proves the applicability of our approach in change impact analysis.