Research on the Chaos in Software Requirements

The software requirements decomposition can be taken as a dynamic system. According to the nonlinear dynamic requirements decomposition equations developed by us based on the nonlinear dynamic system. This paper further researched the chaotic phenomena of software requirements through simulations. The occurrence of chaos in the process of software requirements decomposition is determined by Requirements Decomposition Rate Parameter (RDRP). When RDRP is too large, a small change may cause the decomposition into an unstable state from a stable state. The decomposition may also be in chaos even if it is nearly completed when RDRP is unsuitable. Therefore, it is better for us to let the decomposition outside chaos region to get all requirements and avoid the influence of requirements change.