Ripple-effect of software trustworthiness evolution based on matrix transform
Ping Cheng, Liu Wei · Systems Engineering - Theory & Practice · 2010
The software trustworthiness evolution belongs to the scope of software evolution,which consists of a scries of complex change activity.From the perspective of the interdependent relations of the trustworthy attributes inside and between the components which express component trustworthiness,reference to the adjacency graph theory,this paper presents software trustworthiness model based on components, and gives the definition of trustworthiness design structure matrix,trustworthiness adjacency matrix and reachability matrix of trustworthy attributes.Depending on matrix shift and calculation,ripple effects of software trustworthiness evolution can be analyzed and its quantity can be ascertained,every ripple effects caused by trustworthy attributes addition,deletion,modification,combination and division are described respectively.This paper also puts out an approach for calculating the relative quantity of trustworthy attributes to software trustworthiness,which provides objective evidence for software trustworthiness management,control,usage and evaluation.