Key Technologies Of System Survivability Based On Variable Fuzzy Set

This paper studies four aspects of system survivability in depth, which include survival situation awareness, automatic emergency response, task manager and comprehensive evaluation. First, we are aware of the survival situation of system from different levels to improve accuracy and objectivity, by using multi-feature fusion of variable fuzzy set. Second, the partial orders of automatic response strategies selection are established for different purpose of response, by analyzing the process of strategy selection of conflict participants in the model of conflict analysis. Third, based on awareness of survival situation, a load balancing algorithm, combining dynamic and static characteristics, is described, and optimization decision theory of variable fuzzy set is emptied to optimize the task scheduling under survive environment. Finall, in order to scientifically and objectively reflect the real situation, variable fuzzy set is used to comprehensively evaluate the survivability of system, and the thought of variable weight is introducted. The calculation method of variable weight is presented according to the relationship of threat, weakness and risk events.