The Trustworthiness Measurement Model of Component based on Spherical Fuzzy Sets

With the continuous increase of functions of the software system, a highly trustworthy software system can help users solve problems in daily life better. How to evaluate a software system's trustworthiness has become an important problem in software engineering. Based on subjective and objective weights, this paper proposes a method to calculate the trustworthiness of components. Firstly, based on spherical fuzzy sets, expert weights are determined by expert similarity, and the subjective weights of component attributes are obtained by combining expert weights with the evaluation of component attributes by experts. Secondly, the initial variance of component attributes is improved, and the objective weight of component attributes is calculated by using the improved variance method. Furthermore, combining the subjective and objective weights, the component attribute weight distribution method is proposed, and then the component trustworthiness measurement model is established. Finally, the component’s trustworthiness in the cross-border medical management system project is evaluated to show the rationality of the measurement model.