Evaluating the significance of system parameters based on rough sets theory and its application
Xiaorun Li · Meitan xuebao · 2004
The rough sets theory was introduced into evaluating the significance of system parameters. A parameter α_(R)(X) defined with the concepts of lower and upper approximation in rough sets theory was used to estimate the significance of system parameters. More system information can be obtained by this method comparing with the other methods, such as K-W method and method based on information entropy. The proposed method was applied in fault analysis of diesel engine's plunger and the result matches the practical situation, so the validity of this method was proved.