Abstract:

Evaluation of node importance in command information system (CIS) is of important effects on information warfare. A new evaluation method on node importance is presented, since the traditional evaluation methods could not be well used in CIS. Both mission requirement and network topology are taken into account, and node importance is calculated by indices of reliance and influence. An experiment is designed and conducted in two different missions. The change of node importance in the process of attack is also researched. Experiment shows the rationality and availability of this method.

Key words: command information system, node importance, service functional chain