| With the influence of the host safety factors more, how to extract from the mass dataof safety factors, quantitative analysis of these elements to host the importance degree ofsafety, and further excavate safety factor groups of the host, finally build a visual safetyevaluation situation apperceiving model, and then proposed the situation awareness ofsafety evaluation model of host based on rough sets theory.Rough set theory is a new mathematical tools of dealing with the fuzzy anduncertainty knowledge, which can effectively analysis and deal with incomplete anduncertainty information, and can be found useful and convert to logical rules in the massdata.Using rough set theory for host safety assessment on the situation awareness, itsprinciple is: through reduct the mass effect factors of host safety to draw some biginfluence factors of host component safety factor sets, using the historical recordassessment, based on rough set theory into the dependency partition on the ability toestablish safety evaluation model, and the safety factor, host two levels of security riskmeasurement model, coupled with safety factor and its importance for the host safety risk,then assess, analysis the security of the system, this method can select the main safetyfactors of affecting host, and form rules from the factors of analyzes, and then establishsafety risk measurement model, thus for the situation awareness of host risk. |
