Importance evaluation of system components by introducing the description of virtual gravity

It is of great help and practical guidance for a system to improve the reliability and extend the service life when getting the knowledge of the components importance in a system. By introducing the description of virtual gravity, the function addressing the influence between components is built to evaluate the importance of each component, in which proximity and relationship contribution to nodes are both considered. By virtue of this method, the core parts of a complex system can be clearly excavated. Advanced Research Projects Agency (ARPA) network is taken as a case study to demonstrate the superiority of the proposed method on evaluating the importance of system components.