Application of Rough Sets in Evaluating System Safety Behavior

Safety is very important for the system which is composed of related interaction elements. Moreover, the uncertainty plays very significant role in making the system run safely. Using rough set (RS), the uncertain data is mined and much more information is illustrated in detail. In the process of evaluating the safety system behavior, the upper and lower approximations are used to define alpha_{B 1} (Zopf_J) by which the safe parameters are judged. RS will be applied to acquire more detailed system information. Through example results, it is concluded that the classification of system safety behavior parameters is judged well. The larger the value is, the greater the classification ability B_i of will be and the safer the system is.